Retrofit Actuator
MS40-7073 and
MS40-7153
Instructions
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P a g e 2 • D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s
Ta b l e o f c o n t e n t s
Actuator removal instructions
Remove existing actuator and linkage — electronic
hydraulic actuator
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3
Remove existing actuator — existing DuraDrive
actuator
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3
Assembly
Assembling linkage to valve — electronic hydraulic
actuator only
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actuator only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . actuator only
4
Spring-return actuators without manual override —
2-way valves
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5
Spring-return actuators without manual override —
3-way valves
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6
Wiring diagram
Typical wiring diagram for MS40 series
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7
Environmental specifications
Temperature, humidity, and NEMA rating
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7
D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s • P a g e 3
A c t u a t o r re m o v a l i n s t r u c t i o n s
Note: Personal working on an actuator replacement
should wear safety glasses at all times during this
changeout.
Remove existing actuator and linkage — MP55XX electronic
hydraulic actuator
1. Disconnect all wiring attached to actuator.
2. Disassemble actuator from valve body by unscrewing actuator
from extension.
3. Remove extension from valve body.
4. Using channel locks, compress the spring and square washer
on top of spring. Using a flat head screwdriver, turn the brass
square nut counter-clockwise to release the washer.
CAUTION
: Spring is under compression and brass square
nut and/or spring could be propelled from valve body if not
firmly held.
Note
:
Remove spring, washer, and brass extension attached to
valve stem.
5. See Figure 4-1 on page 4.
Remove existing actuator — existing DuraDrive actuator
1. Disconnect all wiring attached to actuator.
2. Disassemble actuator from linkage. Loosen the nuts on the shaft
clamp and the anti-rotation shaft.
3. See Figure 5-1 on page 5 for a 2-way valve (STS®, Ultra-sorb® and
steam injection humidifiers). Or see Figure 6-1 on page 6 for a
3-way valve (LTS®).
P a g e 4 • D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s
A s s e m b l y
Figure 4-1:
Assembling linkage to valve.
Assembling linkage to valve — changing from a MP55XX
electronic hydraulic actuator to a DuraDrive actuator.
• Assemble the linkage to the valve, according to Figure 4-1 below.
• Continue the assembly process according to Figure 5-1 on page 5.
Note: Turn to page 5 if replacing an existing DuraDrive actuator.
Typical Valve Body
(2-Way shown)
Linkage
Typical Actuator
(MS41-707X shown)
1 Locate and remove the two
jam nuts taped to the
linkage housing, then screw
the nuts to the bottom of the
valve stem (at least 1/4" of
the stem should extend
above the top nut).
2 Tighten the jam nuts
against each other,
using two 5/16"
open-end wrenches.
3 Raise the valve
stem to the full
up position.
6 Rotate the pinion shaft
CW to fully lower the
rack, and then position
the linkage over the
valve stem.
7 Fully thread the
linkage rack onto
the valve stem,
and then engage
the valve mounting
nut in the linkage
adaptor.
9 Rotate the pinion
shaft CCW to raise
the rack and expose
the jam nuts.
10 Tighten the jam
nuts against the
rack, using a 5/16"
open-end wrench
on the lower jam
nut.
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4 Loosen the anti-rotation
screw and disengage it
from the slot on the
bottom of the actuator.
Remove the actuator if
necessary.
5 Loosen the shaft
clamp nuts and
remove the actuator
from the linkage.
8 Orient the
linkage on the
valve as desired,
and then tighten
the valve
mounting nut
against the
linkage adaptor,
using a 1-5/8"
open end wrench.
D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s • P a g e 5
A s s e m b l y
Figure 5-1:
Mounting spring-return actuator on 2-way valve and setting-up actuator/linkage/valve assembly.
2-Way valve actuator replacement (stem up closed)
Spring-return actuators without manual override
MS40-707X and MS40-715X
• Install the actuator onto the linkage and 2-way valve, and set-up
the assembly according to Figure 5-1 below.
2 Slide the actuator, "L" side
facing out, onto the linkage's
pinion shaft.
1 Rotate the linkage's pinion shaft to the valve open
position:
• Stem Up Closed Valves - Rotate the pinion shaft
CW to extend the linkage rack to the down position.
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3 Align the actuator with the
linkage.
4 Slide anti-rotation screw NYBA-161
half way into the slot on the bottom
of the actuator, and then tighten
the nut on the anti-rotation screw.
•
MS40-704X, MS40-707X, MS40-715X Proportional
Control - Change the reversing switch setting from
direct acting (L) to reverse acting (R), and then
apply power to drive the actuator to the end of
stroke.
d. When finished, return the switch setting to direct acting (L).
Optional: Affix the Open and
Closed labels to the indicator in
the appropriate positions.
OPENCLOSED
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1
6 Lightly finger-tighten the two nuts on the shaft clamp(s), and
then set up the actuator and tighten the shaft clamp(s) as
follows:
For N.C. Operation, Stem Up Closed Valves
a. Power the actuator to the end of stroke
b. Verify that the linkage rack is still in the full down position.
c. Using a 10 mm wrench or socket, torque the nuts equally
on the shaft clamp(s), 8 to 10 lb-ft (11 to 14 N-m). The
actuator is now in the open position, at the end of stroke.
5 Make sure the actuator is in
full contact with the plastic
stand-offs on the linkage.
NYBA-161
Anti-Rotation Screw for
MS40-707X, MS40-715X
1 Caution: When used on a VB-9XXX or
similar 1/2" to 1-1/4" (15 mm to 32 mm)
valve body, push the valve stem all the
way down and adjust the rack to get at
least 1/32" (1 mm) clearance above the top
of the packing. Use only 35 lb-in. (16 N-m)
MS40-704X actuators on obsolete valves.
Stem or plug damage may result from
using actuators with higher output torques.
• Apply power to the actuator and check the system's operation for
proper operation, in response to the control signal.
• For electronic hydraulic actuator to DuraDrive actuator, refer to
the wiring diagram on page 7.
• For existing DuraDrive to DuraDrive actuator assembly, refer to
wiring diagrams supplied with your humidifier.
P a g e 6 • D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s
Figure 6-1:
Mounting MS40-707X and MS40-715X and setting-up actuator/linkage/valve assembly.
A s s e m b l y
3-Way valve actuator replacement
Spring-return actuators without manual override
MS40-707X and MS40-715X
• Install the actuator onto the linkage and 3-way valve, and set-up
the assembly according to Figure 6-1 below.
2
3
2 Tip: A 1-5/8" open-end wrench can be used to
measure the amount of rotation (measured between
opposite sides of the slot).
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1 2
3 Tip:
• MS40-707X, MS40-715X Proportional Control - Change the
reversing switch setting from direct acting (L) to reverse acting (R),
and then apply power to drive the actuator to the end of stroke.
When finished, return the switch setting to direct acting (L).
1 MS40-707X and MS40-715X
actuators are shipped at the
end of stroke, without preload.
6 Apply power to the actuator to rotate it CCW into alignment
with the mounting plate, and then slide anti-rotation screw
NYBA-161 halfway into the slot on the bottom of the
actuator. Tighten the nut on the anti-rotation screw.
Warning: Take care not to pinch your fingers or hand
between the actuator and the mounting plate, when
powering the actuator into alignment.
Caution: When setting the valve preload, power must be
used to position the actuator. Do not manually force the
actuator into the mounting position. If forced, damage to the
pinion shaft or improper close-off may occur.
1-3/8"
3 Align the actuator with the
mounting plate, then rotate it
10° CW. Note that 1-3/8"
movement at the anti-rotation
slot (measured at the anti-
rotation slot's centerline) is
sufficiently equal to 10°.
4 Make sure the actuator is in
full contact with the plastic
stand-offs on the linkage.
5 Holding the actuator at the 10°
position, use a 10 mm wrench or
socket to tighten the two nuts
equally on the shaft clamp, 8 to
10 lb-ft (11 to 14 N-m).
2 Slide the actuator, "L" side
facing out, onto the linkage's
pinion shaft.
10°
Optional: Affix the Open and
Closed labels to the indicator
in the appropriate positions.
OPENCLOSED
NYBA-161
Anti-Rotation Screw for
MS40-707X, MS40-715X
2
1-5/8"
1-5/8" Open-End
Wrench
1 Rotate the linkage's pinion shaft CCW,
to retract the rack (stem up).
• Apply power to the actuator and check the system's operation for
proper operation, in response to the control signal.
• For electronic hydraulic actuator to DuraDrive actuator change-
over, refer to the wiring diagram on page 7.
• For existing DuraDrive to DuraDrive actuator change-over, refer
to wiring diagrams supplied with your humidifier.
D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s • P a g e 7
W i r i n g d i a g r a m s f o r e l e c t r o n i c
h y d r a u l i c a c t u a t o r s t o D u r a D r i v e
Figure 7-1:
Typical wiring diagram for MS40-7073 and MS40-7153 proportional actuators.
Environmental specifications
Ambient temperature limits:
• Shipping and storage, -40 ° to 60 °F (-40 ° to 71 °C)
• Operating, -22 ° to 140 °F (-30 ° to 60 °C)
Humidity:
• 15 to 95% RH, non-condensing
NEMA rating:
• NEMA 1 (IEC IP30). NEMA 2 (IEC IP54) with conduit connector
in the down position
Form No. Retrofit instructions, MS40-7073 & MS40-7153 - 03/04
Part No. 890000-116
DRISTEEM Corporation
An ISO 9001 certified company
and a subsidiary of
Research Products Corporation
U.S. Headquarters:
14949 Technology Drive
Eden Prairie, MN 55344
800-328-4447
952-949-2415
952-229-3200 (fax)
Invensys and DuraDrive are trademarks
of Invensys plc and its subsidiaries and
affiliates.
Specifications may change as design
improvements are introduced.
© 2004 DRISTEEM Corporation
For more information
www.dristeem.com
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