Cleveland Range 24-CGA-10 User manual

Category
Electrical timers
Type
User manual
Statement of Responsibilities
This document is for use by experienced and trained Qualified Cleveland Range, LLC Authorized Service
Representatives who are familiar with both the safety procedures, and equipment they service.
Cleveland Range, LLC assumes no liability for any death, injury, equipment damage, or property damage
resulting from use of, improper use of, or failure to use the information contained in this document.
Cleveland Range, LLC has made every effort to provide accurate information in this document, but
cannot guarantee that this document does not contain unintentional errors and omissions.
The information in this document may be subject to technical and technological changes, revisions, or
updates.
Cleveland Range, LLC assumes no liability or responsibility regarding errata, changes, revisions, or
updates.
Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to follow industry
standard safety procedures, including, but not limited to, OSHA regulations, and disconnect / lock out /
tag out procedures for all utilities including steam, and disconnect / lock out / tag out procedures for gas,
electric, and steam powered equipment and / or appliances
All utilities (gas, electric, water and steam) should be turned OFF to the equipment and locked out of
operation according to OSHA approved practices during any servicing of Cleveland Range equipment
Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to maintain up-to-date
knowledge, skills, materials and equipment.
Cleveland Range, LLC
1333 East 179th St., Cleveland, Ohio, U.S.A. 44110
Ph: 1-216-481-4900 Fx: 1-216-481-3782 Visit our Web Site at www.clevelandrange.com
CLEVELAND RANGE 24CGA10
SEQUENCE OF OPERATIONS
Mechanical Timer
1. To turn the unit on, depress the red on/off rocker switch.
115 VAC is sent to the red indicator light.
115 VAC is sent to normally open drain valve closing it.
115 VAC is sent to H and N of the water level board
115 VAC is sent to the timed/manual switches.
115 VAC is sent to the heat standby timer which will energize the R5 relay 20 seconds
every 6 minutes to maintain heat while unit is idle
2. With the water level board energized and no water in the generator
After a 5 second delay 115 VAC is sent from the FILL terminal to the fill solenoid.
The fill solenoid opens and the generator fills through the drain valve.
The water fills to the low probe shorting it to ground
115 VAC is sent from the HEAT terminal to the 24 VAC heat circuit transformer.
3. When the timed/manual switch is in the timed position and time is on the timer for the top
cabinet only
115 VAC is sent from the timer to the coil of the R6 relay.
The R6 relay energizes
R6B contacts close sending 115 VAC to the timer motor.
R6A contacts close sending 115 VAC through the door switch (optional) to the steam
solenoid, condensate solenoid and R1 relay.
R1 is energized closing the R1 contacts.
24 VAC is sent from the 24VAC transformer to the normally open contacts of R2.
24 VAC is sent from the 24VAC transformer to the R4 coil.
R4 is energized and the R4 contacts are closed.
24 VAC is sent to one side of the ignition module.
24 VAC is sent to the R3 relay coil
R3 is energized and the R3 contacts are closed.
115 VAC is sent through the now closed R4 contacts to the normally open steam
relief valve closing it.
115 VAC is sent to the fan motor.
The fan motor is energized and the air prover switch closes.
24 VAC is sent through the normally closed highlimit and the now closed air prover
switch to the other side of the ignition module.
4. With 24 VAC to both sides of the ignition module.
Spark is sent to the igniter.
24VAC is sent to the pilot coil on the gas valve and gas is sent to the pilot.
When flame is generated and 1.0 micro amps DC is detected, 24 VAC is sent to the main
coil of the gas valve igniting the main burner on low flame.
Steam is energized and sent to the cooking compartment.
When the mechanical timer times down a buzzer will sound and the timer will open
removing 115 VAC from the heat circuit.
5. When the timed/manual switch is in the timed position and time is on the timer for the
bottom cabinet only
115 VAC is sent from the timer to the coil of the R7 relay.
The R7 relay energizes
R7B contacts close sending 115 VAC to the timer motor.
R7A contacts close sending 115 VAC through the door switch (optional) to the steam
solenoid, condensate solenoid and R2 relay.
R2 is energized closing the R2 contacts.
24 VAC is sent from the 24VAC transformer to the normally open contacts of R1.
24 VAC is sent from the 24VAC transformer to the R4 coil.
R4 is energized and the R4 contacts are closed.
24 VAC is sent to one side of the ignition module.
24 VAC is sent to the R3 relay coil.
R3 is energized and the R3 contacts are closed.
115 VAC is sent through the now closed R4 contacts to the normally open steam
relief valve closing it.
115 VAC is sent to the fan motor.
The fan motor is energized and the air prover switch closes sending 24 VAC to the
other side of the ignition module.
6. With 24 VAC to both sides of the ignition module.
Spark is sent to the igniter.
24VAC is sent to the pilot coil on the gas valve and gas is sent to the pilot.
When flame is generated and 1.0 micro amps DC is detected, 24 VAC is sent to the main
coil of the gas valve igniting the main burner on low flame.
Steam is energized and sent to the cooking compartment.
When the timer times down, the closed contact will open removing 115 VAC from the
heat circuit.
115 VAC will be sent through the now closed contacts to the 3-second timer.
For 3 seconds 115 VAC will be sent to the buzzer and it will buzzzzzz.
7. When the timed/manual switch is in the timed position and time is on the timer for both
cabinets
115 VAC is sent from the timer through the door switch (optional) to both steam
solenoids, both condensate solenoids and both relays.
Both relays are energized closing the relay contacts.
24 VAC is sent from the 24VAC transformer through the R1 and R2 contacts to the
high coil on the gas valve.
24 VAC is sent from the 24VAC transformer to the R4 coil.
R4 is energized and the R4 contacts are closed.
24 VAC is sent to one side of the ignition module.
24 VAC is sent to the R3 relay coil.
R3 is energized and the R3 contacts are closed.
115 VAC is sent through the now closed R4 contacts to the normally open steam
relief valve closing it.
115 VAC is sent to the fan motor.
The fan motor is energized and the air prover switch closes sending 24 VAC to the
other side of the ignition module.
8. With 24 VAC to both sides of the ignition module.
Spark is sent to the igniter.
24VAC is sent to the pilot coil on the gas valve and gas is sent to the pilot.
When flame is generated and 1.0 micro amps DC is detected 24 VAC is sent to the main
coil of the gas valve igniting the main burner on high flame (the high coil was energized
in step 7).
Steam is energized and sent to the cooking compartments.
When the timers time down the buzzers will sound and each timer will open removing
115 VAC from the heat circuit.
9. When the water level reaches the high probe then 115 VAC is removed form the FILL
terminal and the fill solenoid is turned off.
10. After the water level drops below the high probe for 5 seconds 115 VAC is sent to the FILL
terminal again.
11. 115 VAC is turned of by depressing the red on/off rocker switch.
115 VAC is removed from the timer and heating circuits.
115 VAC is removed from the normally open drain valve allowing the steamer to drain.
115 VAC is sent to the 3-minute timer.
The fill solenoid is energized for 3 minutes flushing the drain.
STEAM VALVE
GND
SP
GND
24V
MV/PV
L105974 M
C
HI
GAS
VALVE
24V
TRANSFORMER
HEAT STANDBY TIMER
R5 COIL
2
R2
IGNITOR
R5
R4
1
R1
R1
R2
3
PRESS SWITCH
R4 COIL
CONTROL
MODULE
MV
PV
R3 COIL
AIR PROVER
SECONDARY 24V
PRIMARY 115V
HIGH LIMIT
RESET SWITCH
STEAM RELIEF VALVE
FAN MOTOR
R3
R4
2 WIRE, 115 VAC
TB
POWER SWITCH
3 MIN TIMER
3
2
1
DESCALE
TIMER
BLK
8
2
7
3
4
6
5
1
R1 COIL
CONDENSER VALVE
HI
WATER
BOARD
H
N
XL
HEAT
FILL
C
DESCALE INDICATOR
POWER ON
R
FILL VALVE
NO
L
NO
A
L
& RESET SWITCH
WHT
STEAMCRAFT 10 GAS - MECHANICAL CONTROL
N
L1
CUSTOMER
CONNECTION
TO
PROBES
3
2
C
BLOWDOWN
OPTION
TIMER
1
R3
NC
DRAIN VALVE
UPPER
R6
UPPER MOTORIZED TIMER
R6A
NC
MOTOR
C
NO
NO
SWITCH
(SCS OPT)
C
DOOR
3
2
1
BUZZER
MANUALTIMEDMANUAL
NOC
R6B
3 SEC TIMER
TIMED
(SCS OPT)
SWITCH
C
R7A
LOWER MOTORIZED TIMER
NC
NO
TIMED
C
MANUAL
MOTOR
C NO
MANUAL
NO
R7B
DOOR
R2 COIL
STEAM VALVE
CONDENSER VALVE
3 SEC TIMER
1
3
TIMED
2
R7
BUZZER
P105974 M
RED
WHT/RED
WHT/YEL
1
PRP
WHT
25
3
2
24
GRA
WHT/GRA
ORN
BLU
WHT
BLK
RED
108995 - HIGH LIMIT RESET SWITCH
106144 - IGNITION ASSY
30
29
12
439091 - TERMINAL BLOCK
YEL
ORN
105788 - AIR PROVER SWITCH
03524 - RELAY ( R1, R2 ) 120V
22199 - STEAM RELIEF SOLENOID
107239 - PROBE ASSEMBLY
105785 - RELAY ( R3, R4 ), 24V
105693 - GAS CONTROL MODULE
106580 - HEAT STANDBY TIMER
22218 - WATER SOLENOIDS
106541 - BLOWDOWN TIMER
20
105695 - FAN
20478 - 3 MIN TIMER
105990 - TERMINAL STRIP
105966 - RELAY ( R5 ) 120V
22221 - DRAIN VALVE
25
26
27
28
22
21
24
23
105784 - PILOT
107241 - WATERBOARD
16
WHT/ORN
19
17
18
14
15
13
108880 - DOOR SW ( SCS ) MAGNETIC
22193 - COMP STEAM SOLENOID
19994 - DESCALE IND / RESET SW
105782 - GAS VALVE ( NAT )
104224 - TIMED / MANUAL SWITCH
110198 - MOTORIZED TIMER
5
19993 - POWER SWITCH
1057821 - GAS VALVE ( LP )
20528 - TRANSFORMER
106911 - DESCALE TIMER
9
26
10
11
COND
TOP
7
6
8
41350 - BUZZER
20477 - 3 SEC TIMER
3
4
2
1
PARTS LIST
( OPTIONAL )
18
91135
3
2
1
INTERMITTENT
28
26
WHT/BRN
BOT
BRN
COND
8
5
BLOWDOWN
19
12
9
4
1
14
13
BLK
8
5
8
31
8
5
124 14
19
9
BLK
1
13
14412
18
12414
9113
RED
RED
13
14
FILL
BLU
22
GRN
27
27
GRN
1918
4
8
REF
1
5
RED
RED
12
9
BRN
PRP
YEL
BLK
30
WHT/BLK
8
YEL
LT/BLU
CONNECTION
CUSTOMER
12
WHT
WHT
GRA
WHT
BLK
WHT
15
24v
ORN
WHT/ORN
WHT/YEL
YEL
GRN
16
BRN
TAN
20
RED
RED
BRN
LT BLU
TAN
19
PRP
HI VOLT
WHT/GRA
RED
4123
84
4
1
8
5
PRP
WHT
LT BLU
19
14 12
14
913
12
TAN
LT/BLU
TAN
5
67
5
84
1
RED
5
1
YEL
YEL
98
5
84
1
LT BLU
18
13
14
9
12
13 9
LT BLU
YEL
LT BLU
18
13
14
9
12
YEL
ORN
23
1
WHT
3
2
BLK
MECHANICAL TIMER
YEL
BLK
YEL
WHT
RED
PRP
RED
C
10
14
YEL
YEL
LT BLU
BLK
BRN
YEL
BRN
WHT
29
RED
BLK
BRN
WHT/RED
BLK
XL
HEAT
N
H
FILL
ORN
BLU
WHT
GRN
13
HI
C
BLK
RED
17
21
STEAMCRAFT 10 - GAS
RED
6
TAN
TAN
WHT
LT/BLU
WHT/RED
W / OPTIONAL
REMOVED
DOOR
SWITCH ( SCS )
WHT/BLK
4
3
WHT/RED
1
6
5
8
7
4
3
2
9
RED
ORN
BLK
BLK
RED
YEL
WHT/YEL
GRA
WHT
WHT/GRA
BLK
WHT
WHT
RED
BLU
RED
BLK
BLK
7
WHT
DOOR SWITCH ( SCS )
5
GRA
WHT
WHT/GRA
YEL
WHT
8
REMOVED W / OPTIONAL
RED
BLU
ORN
7
ORN
HI
M
P
11
BRN
YEL
WHT/RED
WHT/YEL
RED
22
WHT
BLK
WHT/BLK
WHT/RED
WHT
BLK
RED
RED
WHT
WHT
WHT
RED
222231 - FILL VALVE
31
BLK
LT BLU
1
NC
C NO
32
R7
123
2
ORN/BLK
WHT/BLK
PNK
LT BLU
ORN
LT BLU
LT BLU
W/BLU
ORN
1
NO
LT BLU
C
LT BLU
ORN/BLK
232
NC
R6
WHT/BLK
W/BLU
LT BLU
PNK
4
321
3
LT BLU
WHT/BLK
RED
32
105966 - RELAY ( R6) 120V
W/BLU
BLK
BLK
BLK
BLK
W/BLU
Replace the
on/off rocker
switch
Yes
Connect power
to steamer.
No
Is the red light on?
Is there power to
the steamer?
Is there water in
the sight glass?
Yes
See
Steamer won't
fill.
No
Has the steam
generator ignited?
Yes
No
Does the steamer
steam in manual
mode?
Yes
Replace
the timer
Yes
Is there power to
the Timed/Manual
switch?
No
Repair or
replace the
wiring to the
switch
Is there power
from the Timed/
Manual switch?
Yes
Replace the
switch
No
Does the steamer
have the optional
door switch?
Yes
Replace the
door switch
Is there 120 VAC
accross the coil of
the steam
solenoid.?
No
PROBLEM:
24CGA10
Steam
cabinet won't
steam with time on
the timer and time/
manual switch in
the timed position
Yes
No
See
Steamer
generator
won't ignite
No
Steam cabinet
won't steam
Does the steam
cabinet steam
when the door
switch is
bypassed?
Yes
Yes
No
Replace the
steam solenoid
Repair
or replace the
wiring to the steam
solenoid
No
Steam generator
won't fill.
Is there power
to the
steamer?
Yes
Supply power to
the steamer.
No
Is there water
to the
steamer?
Supply cold water
to the steamer.
No
Yes
Is there 120 VAC
between the H and N
on the water board?
Replace the on/off
rocker switch .
No
Yes
Is there
120 VAC
between Fill and
N on the water
board?
Yes
Remove
the wire from the HI
terminal on the water
board. Is there 120
VAC between Fill and
N?
No
Replace the water
board
No
Is there
debris on the
HI probe in the
probe assy?
Yes
Replace the wire
to the Hi probe.
Clean the probes
or replace the
probe assy.
No
Yes
Is there
120 VAC across
the coil of the fill
solenoid?
Yes
Is
water leaving
the fill
solenoid?
Replace the wiring
to the fill solenoid.
No
Yes
Replace the fill
solenoid
No
Is there
120 VAC across
the coil of the
drain valve?
Yes
Does
the steamer have
the optional
intermittent
blowdown timer?
No
Repla
ce wiring to
drain solenoid.
No
Is
there 120 VAC
between terminals
2&3 on the timer?
Is water
draining from
the generator?
Replace the drain
valve.
Yes
Replace the
intermittent
blowdown timer.
Yes
Yes
Replac
e the wiring
to t
he intermittent
blowdown timer .
No
No
PROBLEM:
24CGA10
Steam
generator
won't fill
If water is leaving
the fill solenoid
and not draining
from the generator
where is it going?
check for leaks..
Yes
Is there 120 VAC
between the
terminals Heat and
N on the water
level board with
the the low probe
submerged?
Is there 120 VAC
between Heat and N
terminals on the water
level board with a
jumper between
terminal XL and C?
No
Clean or
replace the
probe assy.
Replace water
level board.
No
Yes
Yes
Is the red light on?
Is there power to
the steamer?
Connect power
to the steamer
No No
Replace the
on/off switch
Is there water in
the sight glass?
Yes
Yes
Yes
See
Steamer won't
fill
No
PROBLEM:
24CGA10
Steam generator
won't ignite
Steam generator
won't ignite
Is there 24 VAC
on ignition
transformer?
Replace the
igniton module.
No
With the Top
cabinet in the
manual position, is
there 120 VAC to
the fan?
Yes
Is there 120 VAC
to the coil of
cabinet relay R1?
No
Replace the
Timed/Manual
switch.
No
Is there 24 VAC to
the R4 coil?
Yes
With the bottom
cabinet in the
manual position, is
there 120 VAC to
the fan?
Is there 120 VAC
to the cabinet relay
R2 coil?
Yes
No
Yes
Replace the
cabinet relay
(R1or R2).
No
Is there 24 VAC to
the R3 coil?
Yes
Replace the R4
relay.
No
Does the fan turn?Yes
Replace the
timed/manual
switch.
No
Replace the
fan.
No
Is there 24 VAC to
the gas valve?
Yes
With the high limit
temporarily by
passed is there 24
VAC to the ignition
module?
No
Replace the
high limit.
Yes
Adjust or
replace the air
prover switch.
No
Replace the R3
relay
Yes
Is there 24 VAC to
the PV and MV/PV
terminals on the
Gas valve and
spark to the igniter
for 90 seconds?
Yes
Replace the
ignition module
No
Is the pilot valve
opening?
Yes
Replace the
gas valve.
No
Is there gas to the
steamer?
Yes
Supply gas to
the steamer
No
Due to the
construction of the
burner box it is best to
replace the ignitor,
ignition cable and sensor
(ground wire ) at the
same time.
Yes
PROBLEM:
24CGA10
Electronic timer displays "PAUS" and won't count down
START
Is steam heating
the cooking
cabinetabove 192
degrees (the set
temp of the
thermo-switch)?
Does the timer
count down when
the thermo-switch
is bypassed?
Yes
See
Steamer
won't steam
No
Replace the
electronic timer
No
Replace the
thermo-switch
Yes
PROBLEM:
24CGA10
Steam leaks around the door.
START
Is COLD water
supplied to the
steamer?
Supply cold
water (35-60
PSI) to the
steamer.
No
Is the door gasket
physically
damaged?
Yes
Turn over the
gasket or
replace it.
Yes
Is the door out of
alignment?
No
Replace the
door bearings
and pins.
Yes
Is the drain
obstructed?
No
Remove the
obstruction
Yes
Is there 120 VAC
across the coil of
the condensate
solenoid?
No
Replace the
wiring to the
condensate
solenoid.
No
Is the solenoid
opening?
Yes
Replace the
condensate
solenoid.
No
Replace the
condensate spray
nozzle
Yes
Steamer
won't
stop
steaming
PROBLEM:
24CGA10
Steamer won't stop steaming with
door open
Is the
timed/manual switch
in the timed position
with no time on the
timer?
Steamer will steam
constantly in the
manual position. Put
the timed/manual
switch in the timed
position with no time on
the timer.
No
Does the steamer
have the optional
door switch?
Yes
Adjust or replace
the door switch.
Yes
Does steamer
continue to steam with
both wires removed
from terminal 1 on the
heat standby
timer?
No
Replace the heat
standby timer.
Yes
Is there
120 VAC to the
coil of the
contacter?
No
Replace the timer.
Yes
Is
there an amp
draw at the
element?
No
Replace the
contactor
Yes
When power is
removed from the
element steam is
still made for
approximately 10
seconds. This is
normal.
No
Problem:
24CGA10
Steamer won't preheat
Steamer won't
preheat
Is the
timed/manual
switch in the timed postion
with time on it or in the
manual
postion?
See Problem:
steamer won't
steam.
Yes
This steamer is
not equiped with a
preheat
thermostat. The
timed manual
switch must be in
manual or time
must be on the
timer.
No
PROBLEM:
24CGA10 Generator over--
pressurizes (relief valve
discharges constantly)
Generator over-
pressurizes
Is discharge from
relief valve cold?
See Problem:
Steamer
Floods
Yes
No
Does generator
over-pressurize
with door open
(and optional door
switch bypassed)?
Is condensate
solenoid operating
properly?
No
Replace
condensate
solenoid.
No
Is the condensate spray
nozzle spraying a cone
of cold water down the
drain?
Yes
Replace spray
nozzle
Check drain for
any obstructions
and correct
installation.
No
Yes
Does the generator over-pressurize
only when both cabinets have been
running and are then shut down?
Yes
Replace the
normally open
relief solenoid
Does generator over-pressurize when
the steam supply hoses have been
disconnected from the steam
manifolds? Warning: Steam is
hot!!
No
Descale
generator
Yes
Replace the
steam
solenoids
No
Problem: 24CGA10 Steamer Floods (Water is entering cabinet through the steam nozzles)
Steamer Floods
Is 120 VAC to the
fill solenoid with
water touching the
top probe?
Replace the fill
solenoid.
No
Is there 120 VAC
to the fill solenoid
with the wire
removed from
terminal 1 on the 3
min. timer?
Yes
Replace the 3
minute timer.
No
Is there 120 VAC to the fill
solenoid with a jumper
placed from the HI terminal
to the C terminal on the
water level board?
Yes
Replace the
water level
board.
Yes
Clean
or replace the
probe housing
No
Is gas pressure
correct (Natural:
2.0" Low and 3.5"
high. L.P.: 4.2"
low, 10" high)?
Adjust or
replace the gas
valve
No
Yes
Yes
Descaling Procedure-SteamCraft Ultra and Gemini Series
1. Turn the unit OFF and open the
doors:
This will drain and rinse the generator for about
3 minutes.
2. Turn the unit power back On:
The generator will begin to refill with water.
3. Select Timed with the Timed/Manual
switch:
DO NOT start the timer, since you do not want
to heat the water during descaling. Leave the
doors open.
4.
Remove descaling port cap and add
with the specified amount of
DISSLOVE:
(See chart above)
Do this while the unit is refilling. The generators
can take-up to 8 minutes to refill.
5.
After refill has stopped, add extra tap
water into the descaling port until
liquid is seen entering the cooking
cabinet.
Note: Ultra 10 gas will have liquid
coming out of the drain,
Adding extra water when descaling will raise the
descaling solution higher than the normal fill level,
allowing the DISSOLVE to work on sensors and
surfaces above the water line
6. Let the descaler soak in generator for
approximately one hour:
7. After one hour, turn the unit power
Off:
This will drain and rinse the generator
for about 3 minutes.
8. After the 3-minute drain cycle
completes, turn the unit back ON. After
the filling has stopped, add water until
liquid enters the cooking compartment (or
drain for the ultra 10 gas), and then turn
the unit OFF. This will drain and flush any
residue from the water level control
assembly. Replace descaling cap.
9.
After the 3 minute drain cycle
completes, Turn the unit ON and set
the Timer for 20 minutes:
Make sure the
Time/Manual switch is in the timed setting
and the doors are closed.
10. When the timer times out (after 20
minutes) turn the power Off:
This will drain and rinse the generator for
about 3 minutes.
This ends the descaling procedure. You can
now turn the unit back on and resume normal
startup and cooking operations.
How Much DISSOLVE to Use
Model Dissolve
Ultra 3 1/2 Gallon
Ultra 5 1 Gallon
Ultra 10 (Elec.) 1 Gallon (ea.)
Ultra 10 (Gas) 1½ Gallon
Gemini 6 & 10 1 Gallon (ea.)
Note: Some SteamCraft Ultra models (the
electric powered Ultra 10 and Gemini 6 and 10,
for example) have two generators and two
descaling ports. Both units should be descaled
at the same time, using this procedure
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Cleveland Range 24-CGA-10 User manual

Category
Electrical timers
Type
User manual

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