1
Service Information
Reclosers
Types VW, VWV27 and VWV38
Maintenance Instructions
S280-30-7
December 1986 • New Issue
Figure 1.
Type VW vacumm-interrupting, hydraulicaly controlled, automatic circuit recloser.
99001KM
CAUTION
Do not energize this equipment out of oil.
RADIATION
WARNING
Before performing electrical tests on types VW and VWV
Reclosers, refer to Service Information S280-90-1.
CONTENTS
Safety for Life ......................................................................2
Introduction .........................................................................2
Description and Operation ..............................................2
General ..............................................................................2
Manual Operating Handle ...............................................2
Non-Reclosing Lever .......................................................2
Contact Position Indicator ................................................2
Vacuum Interrupters ........................................................3
Closing Solenoid ..............................................................3
Closing Solenoid Contactor .............................................3
Hydraulic Pump and Lockout Piston ..............................3
Series Trip Solenoids .......................................................3
Time Delay Unit ................................................................3
Mechanism Operation ......................................................4
Hydraulic Control System Operation ............................4
Maintenance ........................................................................5
Frequency of Maintenance .............................................5
Periodic Maintenance Inspection ....................................5
Manual Operation of the Recloser ..................................6
Mechanism In Oil ...........................................................6
Mechanism Out of Oil ...................................................7
Insulation Level Withstand Tests ....................................7
Oil Condition ......................................................................8
Shop Maintenance Procedures .................................9
Control Lever Overtravel Adjustments ......................9
Bushings ...................................................................9
Type VW Bushings ................................................9
Type VWV27 and VWV38 Bushings ....................10
Vacuum Interrupters ................................................12
Closing Solenoid Contactor .....................................12
Closing Solenoid ......................................................12
Series Trip Solenoid ..................................................13
Solenoid Disassembly .............................................13
Solenoid Replacement ............................................13
Time Delay Unit ..........................................................13
Maintenance .............................................................13
Replacement ............................................................14
Removing Mechanism from Head ...........................14
Reinstalling Mechanism into Head ..........................14
Testing .........................................................................14
Notes............................................................................15
Service Parts List .......................................................15
Bushing Part (Figure 25) ..........................................17
Head and Tank Assembly (Figure 26) .....................19
Trip Coil and Interrupter Mechanisms (Figure 27) ...21
(Figure 28) ...............................................................23
These instructions do not claim to cover all details or variations in the equipment, procedure, or process described, nor to provide direction for meet-
ing every possible contingency during installation, operation, or maintenance. When additional information is desired to satisfy a problem not covered
sufficiently for the user’s purpose, please contact your Cooper Power Systems sales engineer.
14.4 Kv • 560 Amp (Type VW) (Serial No. 510 and
after or beginning with CP57.)
24.9 Kv • 560 Amp (Type VWV27) (Serial No. 144
and after or beginning with CP57.)
34.5 Kv • 560 Amp (Type VWV38) (Serial No. 101
and after or beginning with CP57.)
Types VW and VWV Maintenance Instructions
2
The instructions in this manual are not intended as a sub-
stitute for proper training or adequate experience in the
safe operation of the equipment described. Only compe-
tent technicians who are familiar with this equipment
should install, operate, and service it.
A competent technician has these qualifications:
• Is thoroughly familiar with these instructions.
• Is trained in industry-accepted high- and low-voltage
safe operating practices and procedures.
• Is trained and authorized to energize, de-energize,
clear, and ground power distribution equipment.
• Is trained in the care and use of protective equipment
such as flash clothing, safety glasses, face shield,
hard hat, rubber gloves, hotstick, etc.
Following is important safety information. For safe instal-
lation and operation of this equipment, be sure to read
and understand all cautions and warnings.
Safety Instructions
Following are general caution and warning statements
that apply to this equipment. Additional statements,
related to specific tasks and procedures, are located
throughout the manual.
SAFETY INFORMATION
SAFETY FOR LIFE
Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We actively
promote safe practices in the use and maintenance of our products through our service literature, instructional training
programs, and the continuous efforts of all Cooper Power Systems employees involved in product design, manufacture,
marketing, and service.
We strongly urge that you always follow all locally approved safety procedures and safety instructions when working
around high voltage lines and equipment and support our “Safety For Life” mission.
!
SAFETY
FOR LIFE
!
SAFETY
FOR LIFE
WARNING: This equipment is not intended to
protect human life. Follow all locally approved pro-
cedures and safety practices when installing or operat-
ing this equipment. Failure to comply can result in death,
severe personal injury and equipment damage.
G102.1
!
DANGER: Hazardous voltage. Contact with haz-
ardous voltage will cause death or severe per-
sonal injury. Follow all locally approved safety
procedures when working around high and low voltage
lines and equipment. G103.3
!
WARNING: Before installing, operating, main-
taining, or testing this equipment, carefully read
and understand the contents of this manual. Improper
operation, handling or maintenance can result in death,
severe personal injury, and equipment damage. G101.0
!
This manual may contain four types of hazard
statements:
DANGER: Indicates an imminently haz-
ardous situation which, if not avoided, will
result in death or serious injury.
WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury.
CAUTION: Indicates a potentially hazardous situ-
ation which, if not avoided, may result in equip-
ment damage only.
!
!
Hazard Statement Definitions
!
WARNING: Power distribution equipment must
be selected for the intended application. It must be
installed and serviced by competent personnel who
have been trained and understand proper safety proce-
dures. These instructions are written for such personnel
and are not a substitute for adequate training and expe-
rience in safety procedures. Failure to properly select,
install, or maintain this equipment can result in death,
severe personal injury, and equipment damage. G122.2
!
S280-30-7
3
Figure 2.
Untanked Type VW vacuum recloser.
INTRODUCTION
Service Information S280-30-7 provides the maintenance
instructions for Type VW, VWV27 and VWV38 three-phase,
hydraulically controlled, vacuum reclosers. Included is a gen-
eral description of the recloser and its operation, instructions for
periodic inspection and routine maintenance, testing proce-
dures, and instructions for shop repairs. A service parts list,
keyed to exploded-view drawings of the recloser is included at
the back of the manual.
DESCRIPTION AND OPERATION
General
The Type VW, VWV27 and VWV38 reclosers are self-controlled
devices that sense and interrupt distribution system fault cur-
rents. They automatically reclose to restore service if the fault is
temporary and then reset for another programmed sequence of
operations. If the fault is permanent the recloser locks open
after one, two, three or four operations, depending upon its
operating settings. All three phases open, close, and lock out
simultaneously.
Opening sequences of these reclosers can be all fast, all
delayed, or any combination of fast followed by delayed opera-
tions; up to the maximum of four operations. On coordinated
systems, fast operations clear temporary faults before branch-
line fuses can be damaged. Delayed openings allow time for
fuses or other downline protective devices to clear so that per-
manent faults can be confined to smaller sections of line
Closing energy, as well as energy to charge the opening
springs, is supplied by a high-voltage closing solenoid which is
momentariIy connected phase-to-phase through a high-voltage
contactor.
A “trip-free” yellow operating handle, located under the sleet
hood, will manually lock open the recloser. It cannot manually
close the recloser, but must be in the CLOSED position for the
closing solenoid contactor to operate. A red contact position
indicator, linked to the recloser mechanism but independent of
the yellow operating handle, is also located under the sleet
hood.
The location of the major components of a VW recloser are
shown in Figure 2. They are similar for the VWV27 and VWV38
reclosers. Being aware of the location of these components and
their operation will provide a quicker and clearer understanding
of the recloser maintenance and repair procedures that follow.
Manual Operating Handle
When the recloser operates to lockout, the (yellow) manual
operation handle drops down (“trips-free”) from under the sleet
hood, to give a visual indication of recloser lockout. The handle
must be reset manually before the recloser can be closed. Lift-
ing the handle up mechanically closes the closing solenoid con-
tactor, and if power is available to the closing coil circuit, the
closing solenoid will energize, resetting the recloser.
A closed recloser can be manually opened and locked out by
pulling down the yellow handle.
Non-Reclosing Lever
The non-reclosing lever provides the capability for locking out
the recloser on the first trip operation regardless of the pro-
grammed number of operations to lockout.
Contact Position Indicator
The red arrow-like contact position indicator flag is coupled to
the recloser mechanism to show the position of the main con-
tacts. When the flag is down, the vacuum interrupter contacts
are open; when the flag is up, the contacts are closed.
84603KMA
Types VW and VWV Maintenance Instructions
4
Vacuum Interrupters
Circuit opening and fault interruption is achieved within the three
sealed vacuum interrupters. The moving contact rod assemblies
are operated by the recloser mechanism to open and close the
vacuum interrupter contacts. Berylium copper garter springs are
used in the current exchange assemblies to provide a multi-point
low resistance current path between the stationary bushing leads
and the moving contact rod of the interrupters.
Closing Solenoid
The moving contacts of the interrupters are closed by the closing
solenoid, which also extends the opening springs in the head
mechanism. This solenoid is energized for only a few cycles dur-
ing each closing operation when it is momentarily connected
across phases B and C.
Closing Solenoid Contactor
Mechanically operated by the head mechanism, the snap-action
contacts of the closing coil contactor complete the high-voltage
circuit to the closing solenoid for each closing operation.
Hydraulic Pump and Lockout Piston
The hydraulic pump counts the number of times the recloser trips.
With each trip the pump piston is pushed into the pump cylinder,
oil is forced through the lockout cylinder check valve into the lock-
out cylinder. This causes the lockout piston to be raised one step.
When the recloser resets the pump piston is pulled back to the
top of the pump cylinder and oil is drawn in through the intake
check valve.
If the recloser trips again the pump piston will actuate causing
the lockout piston to be pushed up another step. This cycle will
repeat until the recloser locks out. Once locked out the quick
reset rod is mechanically raised allowing the lockout piston to
quickly resettle. If the recloser does not lockout, the lockout pis-
ton will resettle gradually (at a rate of approximately 90 seconds
per accumulated operation at 25°C).
Series Trip Solenoids
The series trip solenoids (Figure 3) are connected in series with
the vacuum interrupters, each carries full line current. When line
current exceeds the minimum trip rating of a coil, by approxi-
mately 200 percent, the plunger is drawn into the solenoid. Near
the end of the plunger stroke the recloser mechanism trips.
When the recloser mechanism is sequenced to the delayed
operation phase, the speed of plunger movement is restrained
by a time-delay unit. The restrained plunger movement pro-
vides a fixed time delay before the recloser mechanism trips.
Time Delay Unit
When the mechanism is sequenced to a delayed operation the
latch assemblies of the trip solenoid plunger linkages are
engaged with the arms on the sealed time-delay units, Figure 4a
and 4b. Trip solenoid plunger movement is then restrained by the
time-delay unit, which provides a consistent delay action by forc-
ing hydraulic fluid through a calibrated orifice within the unit.
Figure 4a.
Time delay unit (old).
82020KMA
DELAY
ARM
FILLER
PLUG
ADJUSTMENT
SCREW
MINIMUM
TRIP
SPRING
Figure 3.
Series Trip coil.
84612KMA
SERIES
TRIP
SOLENOID
Figure 4b.
Time delay unit (new).
86780KMA
FILLER
PLUG
DELAY
ARM
MINIMUM
TRIP
SPRING
ADJUSTMENT
SCREW
S280-30-7
5
Figure 5.
Head mechanism lever arrangement
MECHANISM OPERATION
The operating mechanism, mounted in the head, opens and
closes the vacuum interrupter contacts. Contact opening is initi-
ated by a series trip solenoid which triggers the trip mechanism
to release the loaded opening springs. Contact closing is per-
formed by the closing solenoid which also charges the opening
springs and resets the mechanism for the next trip operation.
The basic operation of the mechanism is shown in Figure 5.
With the interrupter contacts closed (a), the opening springs
are fully extended and the mechanism is in the reset state. When
excessive current levels are passing through the series trip coil
the solenoid plunger is actuated. The trip solenoid plunger oper-
ates the toggle latch, releasing the toggle. This action releases
the opening springs (b) which starts the contact bar assembly in
motion. The spring-biased reset lever rotates to snap the toggle
closed. This action of the reset lever also pulls the plunger out of
the closing solenoid. At this point the interrupter contacts are
fully open (c) and the mechanism is in the open state. When the
closing solenoid plunger reaches the top of its stroke it mechan-
ically closes the closing coil contactor which energizes the clos-
ing solenoid. As the plunger is drawn down into the coil the reset
lever is pulled back and latched in its original position. The inter-
rupter contacts are closed (d) and the opening springs are
extended. The mechanism is now ready for another opening
operation.
HYDRAULIC CONTROL SYSTEM OPERATION
The hydraulic pump, associated cam, and linkages regulate the
number of fast and delayed operations, count the operations to
lockout, and initiate lockout after a preset number of operations.
The hydraulic pump (Figure 6) is linked to the closing-solenoid
plunger and is pushed downward with each return operation of
Figure 6.
Hydraulic pump.
86796KMA
TRIP
PISTON
ROD
QUICK
RESET
ROD
HYDRAULIC
PUMP ROD
PUMP
BODY
Types VW and VWV Maintenance Instructions
6
the plunger. With its downward stroke, the pump forces a
measured amount of oil under the lockout piston (Figure
7), causing it to rise one step. When the closing coil is ener-
gized, the recloser contacts close and the pump returns to its
normal position.
The lockout piston is linked to the sequence selector cam
and the lockout bar. Upward movement of the lockout piston
causes the cam to rotate counterclockwise and the lockout bar
to advance one step. The number of fast operations is preset
on the cam. After these operations, the cam engages the roller
and pushes it to the right. A mechanism arm attached to the
roller engages the time-delay mechanism on each phase. Sub-
sequent operations are then delayed.
When the lockout bar completes its travel, it trips the lockout
latch. Another set of linkages and springs then lock the recloser
contacts open. The quick reset rod is raised, allowing the
hydraulic pump and lockout piston assembly to reset quickly.
The entire pump and sequencing mechanism is now ready for
the next full sequence of operations. For temporary faults that
are cleared before the recloser mechanism reaches lockout,
the hydraulic pump and lockout piston assembly resettles grad-
ually (at a rate of approximately 90 seconds per operation at
25° C) to reset the recloser mechanism.
Figure 7.
Hydraulic pump cross section.
86717KMA
Ratings
ELECTRICAL RATINGS
Type VW TypeVWV27 Type VWV38
Nominal system voltage, kv 14.4 24.9 34.5
Maximum rated voltage, kv 15.5 27 38
Rated impulse withstand
voltage (BIL) kv crest 110 125 150
60-Hertz withstand voltage,
kv
Dry, one minute 50 60 70
Wet, ten seconds 45 50 60
Rated maximum continuous
current, amps 560 560 560
% of Maximum Number of Unit Operations
Interrupting Circuit
Rating X/R Value Type VW Type VWV27 Type VWV38
15-20 3 88 88 88
45-55 7 112 112 112
90-100 14 32 32 32
Total 232 Total 232 Total 232
DUTY CYCLE
MAINTENANCE
Frequency of Maintenance
Because reclosers are applied under widely varying operating and cli-
matic conditions, maintenance intervals are best determined by the
user, based on actual operating experience. To assure proper opera-
tion, reclosers must be maintained when they have operated the
equivalent of a complete duty cycle and before the dielectric strength
has deteriorated below prescribed levels. In the absence of specific
operating experience, the following procedures are recommended.
• When Type VW, VWV27 and VWV38 reclosers are operated under
usual service conditions as defined in ANSI (American National
Standards Institute) C37.60, “Standard Requirements for Automatic
Circuit Reclosers for Alternating Current Systems,” it is recom-
mended that the following maintenance procedures be performed
at the completion of an equivalent duty cycle.
• However, if the recloser has not completed an equivalent duty cycle
within three years, it is recommended that a Periodic Maintenance
Inspection be performed at that time.
• The bellows used on interrupter moving contact rods have a
mechanical life expectance of 7000 operations. Interrupters must
be replaced when 7000 operations have been accumulated.
CAUTION
After 7000 operations bellows may develop leaks, due to
machanical wear. If a leak developes the interrupter may be
unable to clear load or fault current.
Periodic Maintenance Inspection
Each periodic maintenance inspection at the completion of an equiva-
lent duty cycle should include at least the following:
1. Bypass and remove the recloser from service.
2. Thoroughly clean exterior of unit.
3. Inspect external components.
A. Check for broken or cracked bushings. Replace as necessary.
(See page 8 for procedure.)
B. Check for paint scratches and other mechanical damage; paint
to inhibit corrosion.
C. Note counter reading and enter in the record log.
4. Perform a dielectric withstand test to check the insulation
level of the recloser and the vacuum integrity of the interrupters.
(See page 7 for procedure.)
5. Manually operate mechanism; operation should match configura-
tion noted on the data plate.
A. Partially untank unit and support head and mechanism assem-
bly with clean wooden blocks.
B. Use manual closing tool to close interrupters.
C. Pull down on strip solenoid trip links until mechanism trips.
NOTE: The force required to pull down the trip-links will be increased
when the time delay units are engaged.
D. Repeat steps B and C until lockout has been reached (yellow
handle will drop).
6. Untank the recloser to expose the internal components.
S280-30-7
7
CAUTION
Be sure the recloser is open (yellow operating handle under
the sleet hood is down) before untanking, so that the mecha-
nism can not be accidently tripped while out of oil.
CAUTION
Never use volatile solutions, detergents, or water-soluble
cleaners.
7. Clean all internal components.
A. Remove all traces of carbon by wiping with a clean, lint-
free cloth.
NOTE Although current interruption takes place in a sealed vac-
uum chamber, the closing solenoid contactor operates in oil and
will produce some carbon deposits.
B. Flush the mechanism with clean transformer oil.
8. Remove bushings.
A. Non oil filled bushing should be dismantled, cleaned and
inspected.
B. Oil filled bushing should be cleaned and inspected. DO
NOT dismantle oil filled bushings.
9. Replace all external seals and gaskets.
10. Inspect mechanism for cracks, carbon tracking, flashovers
or other damage. Repair or replace as required.
11. Check the condition of the closing solenoid contactor con-
tact tips. If the contact tips are eroded replace entire contactor
assembly. (See page 11 for replacement procedure.)
A. An oil sample taken near the bottom of the tank should
have a dielectric strength of not less than 22 kv rms.
B. Low dielectric strength indicates the presence of water or
carbon deposits. Replace the oil as necessary.
12. Inspect closing coil for cracks or other damage.
13. Inspect series trip solenoid.
14. Check the contact erosion of the vacuum interrupters.
A. Locate the scribe mark on the moving contact rod at the
top of the interrupter, Figure 8.
B. If the scribe mark falls below the top of the phenolic guide
when the interrupter is closed, the interrupter has
reached the end of its useful life and must be replaced.
(See page 10 for replacement procedure.)
NOTE: Procedure for manually operating the recloser when the
mechanism is out of oil is described on page 7.
15. Reinstall bushings, use new gaskets. (See page 8 for instal-
lation procedures.)
16. Drain the tank, and clean out all sludge and carbon deposits.
If oil is to be reused it must be filtered and the dielectric
strength checked.
17. Fill with new, clean insulating oil up to 2-1/4 inches below the
top of the tank flange. See Oil Condition on page 8.
18. Clean the head gasket seat and retank the recloser.
A. Move the yellow operating handle under the sleet hood to
the up position to avoid any possible binding while rais-
ing the tank.
B. Replace the head bolts and tighten to 35-55 ft-lbs torque.
Apply clamping force gradually and equally, in rotation,
to each bolt to achieve an evenly distributed gasket seal-
ing pressure.
19. Check the oil level with the dipstick in the head and adjust the
level to the upper line on the dipstick.
NOTE: If the recloser is equipped with an oil-sight gage, the oil level
should be above the sight gage. if the oil surface line is visible in the
window, add oil to raise the level to the upper line on the dipstick.
20. Perform high-potential insulation withstand test (page ) to
make sure the dielectric clearances within the tank have not
been compromised. Also, use a suitable tester to verify that
the recloser is operating per data plate specifications.
Manual Operation of the Recloser
The recloser may be closed and opened manually while the
mechanism is either in or out of oil.
MECHANISM IN OIL
For a tanked recloser (mechanism immersed in oil) use the fol-
lowing manual operating procedure.
1. To close the recloser.
A. Remove the closing tool port cover and gasket from the
side of the head casting. (See Figure 2 for location.)
B. Insert the KA9OR T-handle closing tool (furnished as an
accessory) into the closing tool port (Figure 9) and engage
the pin on the closing shaft.
C. Lift up the yellow operating handle under the sleet hood to
reset the mechanism.
Figure 8.
Location of scribe on movable contact rod of vacuum
interrupter.
84609KMA
SCRIBE
MARK
Figure 9.
Manually closing recloser.
86797KMA
Types VW and VWV Maintenance Instructions
8
D. Turn the closing tool one-quarter turn clockwise to close
the main contacts.
CAUTION
Never use the KA90R closing tool to close an energized
recloser. Forcing the tool beyond the mechanism stop may
shear the pin on the closing shaft.
CAUTION
The mechanism may be damaged if it is "quick-tripped" with
the yellow operating handle while out of oil.
2. To open the recloser.
A. Pull down the yellow operating handle to trip open the
recloser.
NOTE: If the mechanism is partially untanked, and properly sup-
ported, the recloser can be tripped open by pulling down on the
series trip solenoid linkage.
MECHANISM OUT OF OIL
To operate the mechanism out of oil, proceed as follows:
1. To close the recloser.
A. If the mechanism is still mounted in the head use the pro-
cedure for a tanked recloser above (Mechanism in Oil).
B. If the mechanism is removed from the head turn the trip
reset shaft (Figure 10) with a pair of needlenose pliers to
reset the mechanism, then turn the closing shaft clock-
wise with the closing tool to close the main contacts.
Figure 10.
Resetting trip reset.
84616KMA
TRIP
RESET
SHAFT
2. To open the recloser contacts while the mechanism is out of
oil, proceed as follows:
A. Using the T-handle closing tool turn the closing shaft clock-
wise and hold against the stop.
B. Release the trip lever (Figure 11 ) by moving it to the
right.
C. Then slowly allow the closing tool to rotate counterclock-
wise to open the main contacts.
NOTE: This procedure requires two people; one to oper-
ate the closing tool, the other to operate the trip lever.
Figure 11.
Trip lever releases mechanism when opening recloser out of
oil.
86793KMA
TRIP
LEVER
Insulation Level Withstand Tests
High-potential withstand tests provide information on the dielec-
tric condition of the recloser and the vacuum integrity of the
interrupters. Testing is performed at 75% of the rated low fre-
quency withstand voltage (37.5 kv for the VW, 45 kv for the
VWV27 and 52.5 kv for the VWV38).
At voltages up to 45 kv the radiation emitted by the vacuum
interrupter is negligble. However at higher test voltages radi-
ation injurious to personnel may be emitted. See Radiation
Warning Service Information Bulletin S280-90-1 for further
details.
RADIATION
WARNING
TEST 1: Proceed as follows:
1. Manually close main contacts of recloser (see page 6 for pro-
cedure).
2. Ground recloser tank and head.
3. Connect all three source-side bushings (1, 3, 5) together.
4. Apply proper test voltage to source-side bushings.
5. The recloser should withstand the test voltage for 60 seconds.
TEST 2: Proceed as follows:
1. Manually close main contacts of the recloser (see page 6 for
procedure).
2. Ground recloser tank and head.
3. Ground Phase A (bushing 2) and Phase C (bushing 6).
4. Apply proper test voltage to Phase B (bushing 3).
5. The recloser should withstand the test voltage for 60 seconds.
TEST 3: Proceed as follows:
1. Open main contacts of recloser (see page 6 for procedure).
2. Ground recloser tank and head.
3. Connect and ground all three load-side bushings (2, 4, 6).
4. Connect all three source-side bushings (1, 3, 5).
5. Apply proper test voltage to source-side bushings.
6. The recloser should withstand the test voltage for 60 seconds.
7. Reverse the connections: ground source-side bushings (1, 3,
5); apply test voltage to load-side bushings (2, 4, 6) for 60 sec-
onds.
8. The recloser should withstand the test voltage for 60 seconds.
S280-30-7
9
TEST RESULTS: These high potential withstand tests provide
information on the dielectric condition of the recloser and the vac-
uum integrity of the interrupters.
A. If the recloser passes the closed-contacts tests (Tests 1 and 2)
but fails the open-contacts test (Test 3) a deteriorated vacuum
in one or more of the interrupters is most likely the cause.
Retest each vacuum interrupter individually to determine the
failed phase or phases, and replace the interrupter(s). Retest
to confirm the repair.
B. If the recloser faiIs the closed-contacts tests (Test 1 and 2) the
cause is likely to be a diminished electrical clearance or a
failed insulation. After correcting the problem, retest to con-
firm the repair.
Oil Condition
Oil provides the internal insulation barrier between phases and
from phase to ground, and must be replaced before it deteriorates
below a safe dielectric level. Replace the oil if its dielectric
strength falls below 22 kv.
New oil should always be filtered before use, even though it is
obtained from an approved source. Passing the oil through a blot-
ter press will remove free water and solid contaminants such as
rust, dirt, and lint. Keep aeration to a minimum during filtering to
prevent moisture in the air from condensing in the oil and lower-
ing its dielectric strength.
Used oil must be treated before reusing. Filtering may remove
absorbed and free water and other contaminants to raise the
dielectric strength to acceptable levels. However, filtering does
not always remove water-absorbing contaminants and the dielec-
tric strength may fall rapidly after being returned to service.
Therefore the recloser should be filled with new oil, or oil that has
been restored to like-new condition. Oil used in these reclosers
conforms to ASTM Standard D3487, Type 1; its property limits
are shown in Reference Data R280-90-1, “Oil Specifications and
Tests.”
SHOP MAINTENANCE PROCEDURES
The operations described in this section should be performed
under the cleanest conditions possible. The repair work, except
for bushing replacement, will be simplified if the work bench is
arranged so the mechanism/head assembly can be inverted
(bushings down). No special tools are required for any of the
repair procedures.
Control Lever Overtravel Adjustment
Check for proper adjustment of the control lever by first removing
the sleet hood cover to expose the control lever. From the OPEN
position, slowly push the control lever toward the CLOSED posi-
tion. As the lever is pushed up, latching of the recloser will be felt.
At this point the dimension between the top of the control lever
and the underside of the sleet hood should be 1/4 inch (Figure
12).
If the control lever is not adjusted properly, remove the C-ring
and slide the control lever from the shaft. Rotate the control lever
Figure 12.
Overtravel adjustment of control lever.
clockwise to reduce the dimension or counterclockwise to
increase the dimension. Slide the control lever back onto the
shaft and recheck the dimension. When the proper dimension
has been obtained replace the C-ring.
Bushings
Bushing maintenance generally consists of a thorough cleaning
and a careful examination for chips, cracks, or other mechanical
damage during the periodic maintenance inspection. Bushings
must be replaced whenever damage is discovered.
TYPE VW BUSHINGS
A damaged bushing can be replaced with the
recloser either tanked or untanked, depending
upon the circumstance of the damage.
• If the bushing porcelain is accidentally chipped during installa-
tion of the recloser, and it is obvious that no other damage has
occurred, the bushing porcelain only can be replaced without
untanking the recloser.
• If the bushing has been damaged while in service or storage,
the recloser must be untanked. Water or other contaminants
may have entered the tank (test the oil) the bushing lead may
be damaged (either mechanically or electrical flashover), or
pieces of porcelain may have fallen into the tank.
Replacing the Bushing Porcelain with the Recloser Tanked
Refer to Figure 13 and proceed as follows:
Figure 13.
Replacing bushing w/tanked Type VW recloser.
1. Unscrew bushing terminal and discard terminal gasket.
2. Remove three hex head capscrews and clamps that secure
the bushing to head and lift out porcelain.
3. Remove and discard lower bushing gasket.
4. Twist off split aluminum clamping ring from old porcelain. If it is
in good condition install it on new porcelain; replace if dam-
aged.
NOTE: The clamping ring cushions and distributes the pressure
between the porcelain and the clamps. DO NOT OMIT.
Types VW and VWV Maintenance Instructions
10
5. Using a new gasket, install new porcelain over bushing rod
and into the head. Make sure roll pin, on end of the rod, is
seated into locking groove at the top of porcelain.
6. Position clamping ring with split centered between the two out-
side clamping bolts.
7. Reassemble bushing to head casting with bushing clamps.
Tighten clamping bolts evenly, a little at a time, to 10-15 ft-lbs
torque.
NOTE: Clamping forces must be applied gradually and equally in
rotation to each bolt. This results in an evenly distributed gasket seal-
ing pressure.
8. Install a new terminal gasket and reassemble terminal to bush-
ing rod, tighen to 35 ft-lbs torque.
NOTE: Apply a very small amount of petroleum jelly to the knurled
surface of the inside face of the terminal before assembling the ter-
minal to the bushing rod.
Replacing the Bushing with the
Recloser Untanked.
Refer to Figure 14 and proceed as follows:
1. Loosen terminal.
2. Disconnect bushing lead from bottom end of bushing rod.
3. Remove three hex head capscrews and clamps that
secure bushing to head and lift out complete bushing
assembly.
4. Remove and discard lower bushing gasket.
5. The complete bushing assembly can be replaced or new
porcelain only can be installed depending upon the extent of
damage. If new porcelain only is to be installed, proceed as
follows:
A. Unscrew bushing terminal and withdraw the rod from bot-
tom of porcelain; discard terminal gasket.
B. Insert rod assembly all the way into the new porcelain,
making sure roll pin is seated in the locking groove in top
of bushing.
C. Assemble terminal to bushing rod using a new terminal
gasket; loosely tighten.
NOTE: Apply a very small amount of petroleum jelly to the
knurled surface of the inside face of the terminal before assem-
bling the terminal to the bushing rod.
6. Twist off the split aluminum clamping ring from old bushing
and install on new bushing, if it is in good condition; replace
if damaged.
NOTE: The clamping ring cushions and distributes the pressure
between the porcelain and the clamps. DO NOT OMIT.
7. Install bushing assembly (new or reworked) into head using
a new lower bushing gasket.
8. Position clamping ring with split centered between the two
outside clamping bolts.
9. Reassemble bushing to head casting. Tighten clamping bolts
evenly, a little at a time, to 10-15 ft-lbs torque.
NOTE: Clamping forces must be applied gradually and equally in
rotation to each bolt. This results in an evenly distributed gasket
sealing pressure.
10. Tighten terminal to 35 ft-lbs torque.
11. Reconnect the lead to the bushing rod.
TYPE VWV27 and VWV38 BUSHINGS
The bushings used on Type VWV27 and VWV38 reclosers are
oil-filled. The special fixtures and procedures required to assem-
ble these bushings is beyond the scope of normal shop mainte-
nance repair. Therefore if an oil bushing is in any way damaged,
the complete bushing assembly must be replaced. Refer to Fig-
ure 15 and proceed as follows:
1. Disconnect bushing lead from bottom end of bushing rod.
2. Remove three hex head capscrews and clamps that secure
bushing to head.
3. Remove and discard lower bushing gasket.
4. Twist off split aluminum clamping ring from old bushing and
install on new bushing, if it is in good condition—replace if
damaged.
NOTE: The clamping ring cushions and distributes the pressure
between the ceramic and the clamps. DO NOT OMIT.
Figure 14.
Bushing parts VW recloser.
Figure 15.
Replacing bushing, Type VWV27 and VWV38.
S280-30-7
11
5. Install new bushing through head.
6. Position bushing with stud end of terminal pointing outward.
7. Position clamping ring with split centered between the two out-
side clamping bolts.
8. Reassemble bushing to head casting. Tighten bolts evenly, a
little at a time, to 10-15 ft-lbs torque.
NOTE: Clamping forces must be applied gradually and equally in
rotation to each bolt. This results in an evenly distributed gasket seal-
ing pressure.
9. Reconnect lead to bushing rod.
Vacuum Interrupters
Vacuum interrupters must be replaced when:
• They lose their vacuum as evidenced by a failure during the low
frequency dielectric withstand test across the open contacts;
• The interrupter contacts have eroded beyond their useful life
as evidenced by the position of the scribe mark on the moving
contact rod; or
• The interrupters have completed their mechanical life of 7000
operations.
To replace an interrupter, refer to Figure 16 and proceed as
follows:
1. Make sure the recloser contacts are open; the yellow manual
operation handle, under the sleet hood, is pulled down.
2. Cut nylon tie straps which secure the vertical insulating barrier
and remove barrier.
3. Loosen and remove upper interrupter clamp. As the clamp is
loosened, atmospheric pressure on the bellows will cause the
contact rod to move down into the interrupter. This
action can be verified by observing the scribe mark on the
contact rod. It will move downward to just above (or below)
the fiber disk at the top of the interrupter.
NOTE: If the contact rod does not move, the interrupter may have
lost vacuum or the contact rod may be sticking in the clamping fin-
gers of the contact operating rod assembly. Use a screwdriver to
gently spread the clamping fingers to free the rod.
4. Disconnect bushing lead from lower contact plate assembly.
5. Loosen and remove lower interrupter clamp.
6. Remove hardware attaching lower contact plate to the three
vertical stringers and remove contact plate and interrupter.
7. Install the new vacuum interrupter into the clamping fingers of
the contact operating rod and the lower contact plate. Attach
the plate to the stringers.
NOTE: On side with the single stringer, a spacer on the stringer stud
provides a 1/16-inch gap between contact plate and the attaching flat
washer and locknut when the interruptercontacts are open. This gap
is intentional.
8. Manually close recloser.
9. Coat threads of interrupter clamps and attaching screws with
a film of transformer oil and loosely install.
10. Rotate interrupter so that one of the hex nuts at the top of the
interrupter is centered directly beneath the gap on one side
of the upper clamp. (See Figure 17.)
11. Position the upper and lower interrupter clamps just below the
shoulder on the finger-type current exchange connectors so
clamping force will be applied to the center of each finger, as
shown in Figure 17.
CAUTION
When rotating the interrupter avoid twisting the contact rod
to prevent damaging the bellows and destroying the inter-
rupter.
12. Tighten screws of each interrupter clamp evenly to 75 in-lbs
torque
.
NOTE: Clamps must be tight to prevent slippage of interrupter con-
tact rods in their current-exchange connectors.
13. Reconnect bushing lead to lower contact plate.
14. Reinstall vertical insulation barrier plate between long bush-
ing lead and the mechanism. Position plate and secure it
and the bushing lead with nylon tie straps.
Figure 17
Orientation or interrupter and clamp.
Figure 16.
Vacuum interrupter replacement.
86787KMA
UPPER
INTERRUPTER
CLAMP
UPPER
PLATE
CONTACT
UPPER
PLATE
FIBER
SINGLE
STRINGERS
LOWER FIBER
PLATE
DOUBLE
STRINGERS
LOWER
INTERRUPTER
CLAMP
Types VW and VWV Maintenance Instructions
12
15. Manually trip and close the recloser several times to check
interrupter operation.
NOTE: Contact movement can be verified by observing the move-
ment of the scribe mark on the upper contact rod of the interrupter.
When the recloser is open the scribe mark will be about 5/8-inch
above the fibre disk; on closing the mark will travel 1/2-inch down-
ward.
Closing Solenoid Contactor
If the contacts are badly burned or eroded, the entire contactor
must be replaced. See Figure 18 and proceed as follows:
1. Unhook the two toggle springs from the pin that connects the
operating shaft of the contactor to the toggle arm.
2. Remove the C-type retaining rings and withdraw the toggle
pin.
3. Disconnect the two coil leads from the contactor.
NOTE: Reattach the lockwasher and hex nut to the contactor termi-
nal immediately after disconnecting the coil lead to prevent loss of
moving contact parts which are attached to the support plate with the
same hardware.
4. Disconnect the two fuse leads from the contactor.
5. Remove three hex head capscrews and lockwasher that
attach the contactor to the underside of the recloser mecha-
nism frame and remove contactor.
6. Install new contactor by reversing the disassembly procecure.
Use new C-rings to secure the toggle-link pin.
7. Connect solenoid coil leads to lower terminals.
8. Connect fuse leads to upper terminals.
NOTE: Be sure coil and fuse leads are positioned for maximum clear-
ance to grounded parts.
Closing Solenoid
The closing solenoid coil is connected phase-to-phase and is
rated to operate at full system voltage. It is protected with two
fuses, one on either side. A data plate attached to the recloser
head between source side bushings 3 and 5 provides the coil
connection information. If the solenoid coil must be replaced, due
to damage or
change in operating voltage, refer to Figure 19 and proceed as
follows:
1. Disconnect the two coil leads from closing solenoid contactor.
NOTE: Reattach the lockwashers and nut to the contactor terminal
immediately after disconnecting the coil lead to prevent loss of parts
of the moving contact arm assembly which is attached to the support
plate with the same hardware.
2. Remove four capscrews and lockwashers which attach base
plate to bottom of solenoid frame posts and lower coil and
base plate.
3. Remove coil from the base plate and discard coil gasket.
4. Using a new coil gasket, install new closing coil on the base
plate.
NOTE: A new coil gasket is included in the closing coil replacement
kit.
5. Reassemble base plate to solenoid frame posts and connect
coil leads to the contactor terminals. Make sure the coil leads
clear the solenoid frame by at least 1/2-inch.
6. The closing coil replacement kit includes two new coil fuses
which should be installed with the new coil.
7. The closing coil replacement kit also includes a new voltage
date plate. Replace the plate on the sleet hood of the recloser
head if the operating voltage of the recloser is being changed.
NOTE: VWV27 reclosers, with 20 kv closing coils, above serial num-
ber 975 have a rigid tube insulator on the long coil lead. 20 kv and
above replacement coils for units below serial number 975 include
additional parts to modify the solenoid assembly to accommodate the
rigid insulating tube. Installation instructions are included with the kit.
Figure 19.
Parts involved in solenoid coil replacement.
86784KMA
LEADS
SOLENOID
FRAME
HEX HEAD
CAPSCREWS
GASKET
BRIDGE
PLATE
SOLENOID
COIL
Figure 18.
Replacing closing coil contactor.
84614KMA
TOGGLE
SPRINGS
C-RINGS (4)
OPERATING
LINK
TOGGLE
PIN
TOGGLE
MECHANISM
CLOSING
SOLENOID
CONTACTOR
S280-30-7
13
SERIES TRIP SOLENOID
The continuous current rating and the trip current rating of the
recloser can be changed by installing new coils in the series trip
solenoids. Tripping occurs at about 200% of the continuous cur-
rent rating of the standard coil and at about 140% when the alter-
nate (400X or 560X) coils are used. The maximum interrupting
rating of the recloser is dependent upon the continuous current
rating of the series trip coil.
Two different coil replacement kits are required. One for Phase A
and Phase B solenoids and another for Phase C (the interrupter
furthest away from the sleet hood) which has an opposite wind
because it mounts differently on the interrupter. The same basic
replacement procedure is used for either type coil.
Solenoid Disassembly
1. Remove cotter pin; slide out the groove pin and spacer that
connect the insulated operating links to the solenoid plunger
(Figure 20).
2. Remove bolt that fastens both the outer coil terminal and the
short bushing lead to the lead mounting bracket.
3. Remove the capscrew that connects the inner coil terminal
strap to the interrupter current interchange.
4. Remove elastic stop nut and flat washer that secure solenoid
frame to the upper current exchange mounting board. Lift
entire solenoid assembly off board.
5. Remove solenoid plunger, guide clips, guide channels and
upper coil washer.
6. Lift coil slightly and pull out of the solenoid frame.
7. Replace any damaged parts at this time.
Solenoid Replacement
Check lower coil washer before installing new coils. For coils
rated 280 amperes and below the upper and lower coil washers
are identical. For 400 and 560 ampere rated coils, the lower
washer requires a larger center slot. The same upper washer is
used with all coil sizes.
1. Pass upper insulating washer over terminal strap and align its
slot with the coil slot (Figure 21).
2. Insert coil into the frame and slide the upper coil washer into
position.
3. Replace in order the guide channels, guide clips and plunger.
4. Place the solenoid assembly back on the mounting board
and secure it with the flat washers and elastic stop nuts.
5. Connect operating links to the solenoid plunger with the
groove pin, spacer and cotter pin.
6. A sleeve is provided with each coil to insulate the outer coil
lead from the frame. Slide the lead over the outer lead as ill-
lustrated.
7. Connect the coil terminals to the current interchange and the
bushing lead to complete the assembly.
TIME DELAY UNIT
The recloser is equipped with hydraulically-operated time delay
units on each phase. These provide the different time-current
characteristic (TCC) curves, as shown in Reference Data
R28091-6. Each unit can provide either of two-time delay char-
acteristic curves, but not all four (KA1 194R1 provides B and C
curves and KA1194R2 provides D and E curves).
When the mechanism is sequenced to the delayed operation
phase, the latch assembly of the trip-coil plunger linkage is
engaged with the arm of the time-delay unit, this provides con-
sistent delay action by forcing hydraulic fluid through an orifice in
the unit. Special aircraft-type fluid is used to minimize tempera-
ture effects.
Maintenance
Maintenance to the time delay units is limited to checking the fluid
level in the units. Some loss of fluid is normal, therefore this
inspection should be made each time periodic maintenance is
performed.
To check the fluid level, remove the socket-head filler plug
located on the side of the unit. Add enough fluid to bring the level
up to the filler plug hole. Avoid introducing dirt, lint or any other
foreign material when filling the unit as this can plug the orifice
and cause erratic time-delay action.
NOTE: A special fluid replacement kit, catalog number KA806R2, is
available. The kit consists of approximately 60 cc (2 US fl. oz. ) of the spe-
cial hydraulic fluid in an eye-dropper bottle.
Figure 20.
Series trip solenoid removal.
84613KMA
OPERATING
LINKS
COTTER
PIN
SOLENOID
PLUNGER
INNER COIL
TERMINAL
BOLT
SHORT
BUSHING
LEAD
Figure 21.
Assembling solenoid series trip coil.
82023KMA
SOLENOID
COIL
UPPER
INSULATING
WASHER
FRAME
LOWER
INSULATING
WASHER
Figure 24.
Remove E-ring to disconnect auxiliary switch operating lever.
Types VW and VWV Maintenance Instructions
14
Replacement
Replacement time-delay kits include a factory calibrated time
delay, four flat head screws and a minimum-trip calibration
spring. Remove the malfunctioning unit and install the replace-
ment in its place (see Figure 22).
The minimum trip setting of the recloser must be recalibrated
by adjusting the spring tension whenever a new time-delay unit
is installed.
Removing Mechanism from Head
To gain access to components located in or on the main frame,
the following procedure may be used to remove the mechanism
from the head.
NOTE: These procedures will be simplified if the untanked head and
mechanism assembly can be inverted (bushings down). The unit can be
supported on its bushings.
1. Disconnect all six bushing leads from the ends of the bush-
ings.
2. Disconnect the lockout lever and contact position indicator
shafts by disengaging the spring loaded couplers and locking
them in the disengaged position, Figure 23.
3. Disconnect any accessories, such as a ground trip solenoid,
at their terminals.
4. If the recloser is equipped with the auxiliary switch accessory,
remove the C or E-ring and washer, Figure 24, and discon-
nect the operating lever of the switch from the recloser mech-
anism.
5. Remove the six socket head bolts and lockwashers that
secure the frame to the head casting and carefully lift the
mechanism from the head. Six long pipe spacers will be
released when the mechanism is lifted.
NOTE: By temporarily substituting eye-bolts for two of the hex head
bolts in the bottom of the closing solenoid frame, the mechanism can
be easily lifted and handled with a hoist.
6. Remove couplers from contact position indicator and lockout
lever shafts.
Reinstalling Mechanism into Head
To reinstall the recloser mechanism assembly into the head, the
following procedure may be used.
1. Install the couplers on the lockout lever and contact position
indicator shafts. Lock them in the disengaged position.
2. Carefully lower the mechanism assembly onto the six pipe
spacers which have been positioned over the mounting holes
in the casting.
3. Install the six socket head bolts and tighten evenly to avoid any
binding of the mechanism.
NOTE: Replace the hex head bolts in the bottom of the closing
solenoid frame if eye-bolts were used for handling the recloser
mechanism.
4. Re-engage the lockout lever and contact position indicator
shaft by releasing the shaft couplers.
5. Reconnect the operating lever of the auxiliary switch (if used)
to the mechanism and secure with the washer and E-ring
(Figure 24).
6. Reconnect the bushing leads to the end of the bushings.
TESTING
Procedures for testing the Type VW, VWV27 and VWV38
reclosers are included in the Installation Manual S280-30-1.
Figure 22.
Remove and replace time delay.
86780KMA
MINIMUM
TRIP
SPRING
ADJUSTMENT
SCREW
FILLER
PLUG
DELAY
ARM
Figure 23.
Disconnect couplers.
84605KMA
COUPLERS
83375KMA
E-RING
OPERATING
LEVER
S280-30-7
15
NOTES
Types VW and VWV Maintenance Instructions
16
SERVICE PARTS LIST
The service parts and hardware listed and illustrated include
only those parts and assemblies usually furnished for repair or
involved in the maintenance procedures described in this man-
ual. Further breakdown of listed assemblies is not recom-
mended.
Dimensions of all common hardware parts have been care-
fully checked so that they may be locally acquired. The suffix let-
ter of the 14 character catalog number for common hardware
parts codes the plating of the part:
A - No plating; raw material
H - Silver
M- Black oxide
Q - Cadmium + zinc + chromate
Y - Zinc + chromate
Z - Electro zinc + bronze irridite
A hardware kit, Catalog No. KA849R1, contains an assortment
of roll pins, cotter pins, retaining rings, stop nuts, etc.—common
hardware parts used in Cooper Power System's reclosers that
may not be readily locally available.
To assure correct receipt of any parts order, always include
recloser type and serial number. Because of Cooper Power Sys-
tem's continuous improvement policy, there may be instances
where the parts furnished may not look exactly the same as the
parts ordered. However, they will be completely interchangeable
without any rework of the recloser.
All parts carry the same warranty as any whole item of
switchgear, i.e. against defects in material or workmanship within
a period of one year from date of shipment.
Figure 25.
Bushing Parts.
S280-30-7
17
Item Catalog Quan.
No. Description Number Req’d.
12 Bushing ceramic—Type VW
Standard creepage KP1110R 1
Standard creepage with BCT
accy. KP171 W 1
17” extra creepage KP1578R 1
17” extra creepage with BCT
accy. KP186W 1
13 Bushing rod assembly—
Type VW
Standard and 17” creepage KA716R20 1
Standard and 17” creepage
with BCT accy. KA716R21 1
The following parts are applicable to the bushing current transformer
accessory.
14 Capscrew, hex hd,3/8-16 x 1-7/8,
stl K730101157187Q 3
15 Transformer clamping flange KP170W1 1
16 Flange gasket KP2090A73 2
17 Replacement current transformer
600:5 multi-ratio KA159W1S 1
1200:5 multi-ratio KA132W 1
18 CT washer KP312W 1
19 Capscrew, hex hd,3/8-16 x 1, stl K730101137100Q 3
20 Transformer clamping sleeve KP169W1 1
21 O-ring gasket, used with trans
former clamping sleeve that has
machined groove. Old style
clamping sleeve without
groove, use KP2090A66. KP2000A64 1
22 Hex nut, 3/8-16, stl K880201116037Q 3
23 Stud KP3149A40 1
24 Bushing spacer KP275W1 1
Item Catalog Ouan.
No. Description Number Req’d.
1 Bushing assembly—Type VW
consists of items 10 thru 13)
13” standard creepage KA717R25 6
13” standard creepage with
BCT accy. KA717R26 6
17” extra creepage KA717R27 6
17” extra creepage with BCT
accy. KA717R28 6
2 Bushing assembly—Type
VWV27 (Above S/N 974) and
Type VWV38
26-1/2” creepage KA56RV3 6
26-1/2” creepage with BCT accy. KA56RV4 6
Bushing assy. replacement kit—
Type VWV (below S/N 975)
includes bushing and
conductive gasket (9)
26-1/2” creepage KA842W1 6
26-1/2” creepage with BCT accy. KA842W2 6
3 Hex jam nut, 1/2-20, brass K880725320050H 12
4 Flat washer KP2028A903 12
5 Split lockwasher. med. 1/2.
bronze K900830050000A 6
6 Capscrew, hex hd, 3/8-16 x
2-1/4, stl K730101127225Q 18
7 Bushing clamp KP1109R 18
8 Clamping ring KP1111 R 6
9 Lower bushing gasket
Type VW KP2090A66 6
Type VWV27 and VWV38 KA1193R 6
10 Terminal assembly KA17W901 1
11 Upper bushing gasket KP2090A57 1
Bushing Parts (Figure 25)
Types VW and VWV Maintenance Instructions
18
Figure 26.
Head and tank assemblies.
S280-30-7
19
Item Catalog Quan.
No. Description Number Req’d.
33 Lever and split shaft assembly KA312R 1
34 Retaining ring. Type C, 5/16,
stl, WA516 K970901312000M 1
35 Roil pin,1/8 x 3/4 K970801125075C 1
36 Retaining ring, Type C, 1/4,
stl, WA514 K970801250000M 2
37 One shot link and pin
assembly KA505R 1
38 Retaining ring, Type C,3/8.
stl, WA518 K970801375000M 2
39 Spacer KP3013A91 1
40 Groove pin KP3126A4 1
41 One shot handle assembly KA504R 1
42 Spacer KP301 OA5 1
43 Spacer KP3013A38 2
44 Indicator and support
assembly KA317R 1
45 Retaining ring, Type C,3/16
stl, WA510 K970915188000A 3
46 Groove Pin KP3123A12 1
47 Spacer K3006A9 1
48 Link KP1059R 1
49 Shaft and lever assembly KA319R 1
50 Pin KP3190A11 1
51 Spacer KP3007A8 1
52 Flatwasher, #14S brass K900525026056A 1
53 Cotter pin,3/32 x 1/2, stl K970801093050A 1
54 Roll pin,3/32 x 1/2, stl K970801093050C 1
55 Counter KA28COA2 1
56 Self-tapping screw, Type F.
6-32 x 3/8, sst K751515106037A 2
57 Bracket KP1598R 1
58 Self-tapping screw, Type Z.
#10 x 3/8, sst K801515010037A 2
59 Capscrew, hex hd,
1/2-13 x 3/4stl K730101150325Q 10
60 Flatwasher KP2028A23 10
61 Pipe plug, 1”, sq hd KP2007A4 1
62 Tank
29-1/2” high KRW116FA 1
25-1/2” high KRW116FC 1
63 Pipe plug, 1/2”, sq hd KP2007A3 1
64 Oil sampling and drain valve
assy. KA809R 1
65 Vacuum label KP1041V4H 1
Head and Tank Assemblies (Figure 26)
Item Catalog Quan.
No. Description Number Req’d.
1 Cover plate KP609R 2
2 Gasket KP611 R 2
3 Capscrew hex hd,
1/4-20 x 3/4 stl K730101125075Q 8
4 Split lockwasher, med,
1/4, sti K900801025000Z 8
5 Dipstick KA363R 1
6 O-ring gasket KP2000A9 1
7 Closing coil instruction plate KP2312R 1
8 Self-tapping screw, Type F.
#2 x 3/16, sst K751515102018A 2
9 Capscrew, hex hd,
1/4-20 x spa, stl K730101125062Q 2
10 Manual closing tool access
cover plate KP246R1 1
11 Cover plate gasket KP2000A12 1
12 Capscrew, hex hd,
5/8-11 x 1-1/2.stl K730101162150Q 2
13 Split lockwasher, med,
5/8, stl K900801062000Z 2
14 Lifting lug KP456H2 2
15 Ground connector KA392R 1
16 Head casting, includes control
shaft bushings KA840R 1
17 Head gasket KP2103A8 1
18 Nameplate
Type VW KRW107F1 1
Type VWV27 KRW127F1 1
Type VWV38 KRW173F 1
19 Voltage data plate KP567R 1
20 Coil data plate KP2119A9 1
21 Operating data plate KP1371R 1
22 Self-tapping screw, Type Z.
#4 x 3/16, sst K801515004018A 8
23 Sleet hood cover plate K283R 1
24 Thread cutting screw, Type T.
#12 x 1/2. sst K781515112050A 5
25 Contact indicator plate KP1067R 1
26 Handle designation plate KP390R 1
27 Self-tapping screw, Type F.
2-56 x 3/16, sst K751515102018A 4
28 Manual operating handle
assembly KA477R 1
29 Spacer KP3009A39 1
30 Lever and split shaft assembly KA313R 1
31 Spacer KP3011A5 1
32 Spacer KP3011A7 1
Types VW and VWV Maintenance Instructions
20
Figure 27.
Trip coil and interrupter mechanisms.
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Cooper VW Maintenance Instructions Manual
- Type
- Maintenance Instructions Manual
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