Page 1
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 Ran ge equipment
Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to maintain up-to-date
knowledge, skills, materials and equipment.
Page 2
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
Page 3
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.
Page 4
• 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.
Page 5
• 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.
Page 6
L105974 M
IGNITOR
3
R4
R5
R1
1
HEAT STANDBY TIMER
2
R1
R2
GND
24V
GND
24V
SP
CONTROL
MODULE
R3 COIL
R2
R4 COIL
MV/PV
MV
TRANSFORMER
PV
PRESS SWITCH
AIR PROVER
HIGH LIMIT
RESET SWITCH
HI
C
GAS
VALVE
SECONDARY 24V
R5 COIL
STEAM RELIEF VALVE
PRIMARY 115V
LOWER MOTORIZED TIMER
MOTOR
R7A
DOOR
C
NO
C
R7
NC
R3
NO
(SCS OPT)
SWITCH
R4
CONDENSER VALVE
1
STEAM VALVE
FAN MOTOR
R2 COIL
MANUAL
UPPER MOTORIZED TIMER
MOTOR
TIMED
C NO
R7B
MANUAL
TIMED
3 SEC TIMER
3
2
BUZZER
NC
NO
(SCS OPT)
SWITCH
STEAM VALVE
R1 COIL
R6A
DOOR
C
NO
R6B
NOC
C
R6
CONDENSER VALVE
1
3 SEC TIMER
3
2
BUZZER
3
MANUALTIMEDMANUAL
TIMED
BLOWDOWN
OPTION
TIMER
C
1
2
R3
NC
POWER SWITCH
POWER ON
R
DRAIN VALVE
H
N
HEAT
UPPER
FILL
XL
WATER
BOARD
HI
C
PROBES
TO
3 MIN TIMER
3
1
2
FILL VALVE
DESCALE
BLK
2 WIRE, 115 VAC
CUSTOMER
TIMER
CONNECTION
STEAMCRAFT 10 GAS - MECHANIC A L CONTROL
3
4
7
8
2
1
6
5
NO
L
A
L
NO
DESCALE INDICATOR
& RESET SWITCH
TB
L1
N
WHT
Page 7
1
232
WHT/BLK
W/BLU
PNK
W/BLU
RED
4
1
2
WHT/BLK
RED
W/BLU
PNK
W/BLU
4
6
C
NC
WHT/BLK
321
3
GRA
C NO
NC
32
3
LT BLU
NO
ORN/BLK
LT BLU
BLK
WHT
BLK
LT BLU
LT BLU
123
WHT/RED
RED
BLK
R6
LT BLU
WHT/GRA
WHT
5
BLK
R7
RED
LT BLU
ORN/BLK
ORN
BLK
ORN
BLK
WHT/BLK
TAN
LT BLU
BLK
LT BLU
ORN
TAN
WHT
3
4
ORN
WHT/GRA
7
8
7
BLU
RED
REMOVED W / OPTIONAL
DOOR SWITCH ( SCS )
WHT
7
RED
YEL
GRA
WHT/YEL
BLU
REMOVED
W / OPTIONAL
DOOR
SWITCH ( SCS )
9
BLK
2
1
6
5
WHT
ORN
RED
8
WHT
LT/BLU
BLK
WHT
YEL
WHT/RED
11
BLK
CUSTOMER
CONNECTION
WHT/BLK
BRN
M
P
WHT
WHT
BLK
STEAMCRAFT 10 - GAS
10
C
HI
PRP
BLK
YEL
24v
12
WHT
WHT
YEL
8
MECHANICAL TIMER
RED
RED
GRA
BLK
LT BLU
14
YEL
98
15
67
5
4123
HI VOLT
16
30
RED
YEL
WHT
LT/BLU
HEAT
YEL
LT BLU
WHT/RED
TAN
21
BLK
BRN
22
23
ORN
WHT/YEL
RED
3
2
1
GRA
WHT/GRA
WHT
PRP
24
17
BLK
C
13
HI
XL
FILL
H
N
BLK
YEL
PRP
YEL
5
1
84
YEL
GRN
TAN
5
1
RED
TAN
84
YEL
LT/BLU
5
1
84
PRP
PRP
5
418
RED
WHT/GRA
WHT/ORN
ORN
WHT/YEL
YEL
BRN
RED
GRN
BLU
ORN
WHT
BLK
29
LT BLU
BRN
YEL
BRN
13149
18
YEL
13149
18
13 9
19
14 12
19
14
LT BLU
RED
BRN
20
12
12
12
WHT
WHT
YEL
LT BLU
913
BRN
RED
LT BLU
TAN
WHT
ORN
WHT
WHT/RED
BLK
BLK
RED
RED
BLK
WHT
BRN
WHT
RED
RED
BLU
GRN
5
1
8
4
27
GRN
FILL
8
31
WHT/RED
BOT
5
8
5
8
COND
5
8
1
1
4
18
18
BLK
19
19
91135
12414
9113
124 14
9
13
14412
9
13
12
14
REF
27
RED
13
9
1918
14
12
RED
RED
22
WHT
RED
RED
3
2
28
1
BLK
26
WHT/BRN
INTERMITTENT
BLOWDOWN
( OPTIONAL )
PARTS LIST
110198 - MOTORIZED TIMER
1
2
104224 - TIMED / MANUAL SWITCH
20477 - 3 SEC TIMER
BLK
WHT/BLK
3
2
1
WHT
WHT/RED
YEL
ORN
WHT/ORN
WHT/YEL
25
BLU
WHT
3
41350 - BUZZER
4
19993 - POWER SWITCH
5
19994 - DESCALE IND / RESET SW
6
7
108880 - DOOR SW ( SCS ) MAGNETIC
22193 - COMP STEAM SOLENOID
8
TOP
26
106911 - DESCALE TIMER
9
COND
105782 - GAS VALVE ( NAT )
10
1057821 - GAS VALVE ( LP )
20528 - TRANSFORMER
11
12
439091 - TERMINAL BLOCK
107241 - WATERBOARD
13
105788 - AIR PROVER SWITCH
14
105693 - GAS CONTROL MODULE
15
105784 - PILOT
16
107239 - PROBE ASSEMBLY
17
105785 - RELAY ( R3, R4 ), 24V
18
03524 - RELAY ( R1, R2 ) 120V
19
20
22199 - STEAM RELIEF SOLENOID
21
105695 - FAN
22
105990 - TERMINAL STRIP
23
20478 - 3 MIN TIMER
24
105966 - RELAY ( R5 ) 120V
106580 - HEAT STANDBY TIMER
25
22218 - WATER SOLENOIDS
26
27
22221 - DRAIN VALVE
28
106541 - BLOWDOWN TIMER
108995 - HIGH LIMIT RESET SW I T C H
29
106144 - IGNITION ASSY
30
222231 - FILL VALVE
31
105966 - RELAY ( R6) 120V
32
P105974 M
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
PROBLEM:
24CGA10
Steam
cabinet won't
steam with time on
the timer and time/
manual switch in
the timed position
Steam cabinet
won't steam
Repair or
replace the
wiring to the
switch
Replace the
switch
Steamer won't
See
Steamer
generator
won't ignite
Is there power to
No
the Timed/Manual
Is there power
No
from the Timed/
Manual switch?
Does the steamer
have the optional
See
fill.
switch?
Yes
Yes
door switch?
No
Is the red light on?
No
No
No
Is there water in
the sight glass?
Has the steam
generator ignited?
Does the steamer
steam in manual
Is there 120 VAC
accross the coil of
Yes
Yes
Yes
mode?
Yes
Replace
the timer
the steam
solenoid.?
No
No
Is there power to
the steamer?
Yes
Replace the
on/off rocker
switch
Repair
or replace the
wiring to the steam
solenoid
No
Connect power
to steamer.
Yes
Does the steam
cabinet steam
when the door
switch is
bypassed?
Yes
Replace the
door switch
Yes
No
Replace the
steam solenoid
Page 14
Repla
PROBLEM:
24CGA10
Steam
generator
won't fill
Steam generator
won't fill.
Yes
Is there power
to the
steamer?
Yes
No
Supply power to
the steamer.
Replace the wiring
to the fill solenoid.
Is there water
steamer?
Is there 120 VAC
between the H and N
on the water board?
Is there
120 VAC
between Fill and
N on the water
Is there
No
120 VAC across
the coil of the fill
solenoid?
to the
Yes
Yes
board?
Yes
Supply cold water
No
Replace the on/off
No
No
to the steamer.
rocker switch .
the wire from the HI
terminal on the water
board. Is there 120
VAC between Fill and
debris on the
HI probe in the
probe assy?
Remove
N?
Yes
Is there
Replace the water
No
No
board
Replace the wire
to the Hi probe.
ce wiring to
drain solenoid.
e the wiring
he intermittent
blowdown timer .
No
No
Replace the fill
solenoid
Does
the steamer have
the optional
intermittent
blowdown timer?
Yes
Is
there 120 VAC
between terminals
2&3 on the timer?
Yes
Replace the
intermittent
blowdown timer.
No
No
Yes
Is
water leaving
the fill
solenoid?
Yes
Is there
120 VAC across
the coil of the
drain valve?
Yes
Is water
draining from
the generator?
Yes
Replace the drain
valve.
If water is leaving
No
and not draining
from the generator
where is it going?
check for leaks..
Yes
Clean the probes
or replace the
probe assy.
the fill solenoid
Page 15
PROBLEM:
24CGA10
Steam generator
won't ignite
Steam generator
won't ignite
See
Steamer won't
fill
Is the red light on?
Is there water in
No
the sight glass?
Yes
Yes
Is there power to
No No
the steamer?
Yes
Replace the
on/off switch
Connect power
to the steamer
Clean or
replace the
probe assy.
Timed/Manual
Replace the R4
No
Replace the
switch.
Replace the
cabinet relay
(R1or R2).
relay.
Is there 120 VAC
between Heat and N
terminals on the water
level board with a
jumper between
terminal XL and C?
Yes
Replace water
level board.
Replace the
igniton module.
Is there 120 VAC
to the coil of
No
cabinet relay R1?
Yes
Is there 24 VAC to
No
No
the R4 coil?
Yes
Is there 24 VAC to
the R3 coil?
Yes
Replace the R3
relay
No
Is there 120 VAC
between the
terminals Heat and
N on the water
level board with
the the low probe
submerged?
Is there 24 VAC
No
No
Yes
on ignition
transformer?
With the Top
cabinet in the
manual position, is
there 120 VAC to
the fan?
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
Yes
Yes
No
No
Replace the
Does the fan turn?Yes
Replace the
timed/manual
fan.
No
switch.
Adjust or
replace the air
prover switch.
With the high limit
temporarily by
passed is there 24
VAC to the ignition
module?
Is there 24 VAC to
Yes
the gas valve?
Is there 24 VAC to
the PV and MV/PV
terminals on the
Gas valve and
spark to the igniter
for 90 seconds?
No
No
Yes
Yes
Yes
No
Replace the
high limit.
Replace the
ignition module
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.
Is the pilot valve
Is there gas to the
Yes
opening?
Yes
steamer?
No
No
Replace the
gas valve.
Supply gas to
the steamer
Page 16
PROBLEM:
24CGA10
Electronic timer displays "PAUS" and won't count down
START
Is steam heating
Replace the
thermo-switch
cabinetabove 192
degrees (the set
thermo-switch)?
Does the timer
count down when
Yes
the thermo-switch
the cooking
No
temp of the
Yes
No
is bypassed?
See
Steamer
won't steam
Replace the
electronic timer
START
Is COLD water
supplied to the
steamer?
Yes
Is the door gasket
physically
damaged?
Yes
Turn over the
gasket or
replace it.
No
No
Supply cold
water (35-60
PSI) to the
steamer.
Is the door out of
alignment?
Yes
Replace the
door bearings
and pins.
PROBLEM:
24CGA10
Steam leaks around the door.
Is there 120 VAC
across the coil of
No
the condensate
solenoid?
Is the solenoid
Yes
opening?
No
Is the drain
obstructed?
Yes
Remove the
obstruction
No
No
Replace the
wiring to the
condensate
solenoid.
Replace the
condensate
solenoid.
Yes
Replace the
condensate spray
nozzle
Page 17
Steamer
won't
stop
steaming
Is the
timed/manual switch
in the timed position
with no time on the
timer?
Yes
Steamer will steam
constantly in the
manual position. Put
No
the timed/manual
switch in the timed
position with no time on
PROBLEM:
24CGA10
Steamer won't stop steaming with
door open
the timer.
Does the steamer
have the optional
door switch?
Yes
Adjust or replace
the door switch.
continue to steam with
No
both wires removed
from terminal 1 on the
Does steamer
heat standby
timer?
Yes
Replace the heat
standby timer.
Steamer won't preheat
Is there
No
120 VAC to the
coil of the
contacter?
Replace the timer.
Problem:
24CGA10
Steamer won't
preheat
Yes
No
Is
there an amp
draw at the
element?
Yes
Replace the
contactor
No
When power is
removed from the
element steam is
still made for
approximately 10
seconds. This is
normal.
Is the
timed/manual
switch in the timed postion
with time on it or in the
manual
postion?
Yes
See Problem:
steamer won't
steam.
This steamer is
not equiped with a
thermostat. The
No
timed manual
switch must be in
manual or time
must be on the
preheat
timer.
Page 18
Replace spray
nozzle
Generator over-
pressurizes
PROBLEM:
24CGA10 Generator over--
pressurizes (relief valve
discharges constantly)
No
Is the condensate spray
nozzle spraying a cone
of cold water down the
drain?
Yes
Check drain for
any obstructions
and correct
installation.
See Problem:
Is condensate
solenoid operating
Yes
Steamer
Floods
properly?
No
Replace
condensate
solenoid.
Yes
Is discharge from
No
(and optional door
switch bypassed)?
Descale
generator
relief valve cold?
No
Does generator
over-pressurize
with door open
Replace the
normally open
relief solenoid
Is gas pressure
Yes
Yes
correct (Natural:
2.0" Low and 3.5"
high. L.P.: 4.2"
low, 10" high)?
Yes
Does the generator over-pressurize
Yes
Does generator over-pressurize when
only when both cabinets have been
running and are then shut down?
No
the steam supply hoses have been
disconnected from the steam
manifolds? Warning: Steam is
hot!!
replace the gas
No
Adjust or
valve
No
Replace the
steam
solenoids
Problem: 24CGA10 Steamer Floods (Water is entering cabinet through the steam nozzles)
Steamer Floods
Is 120 VAC to the
Replace the fill
solenoid.
Replace the 3
minute timer.
fill solenoid with
No
water touching the
top probe?
Is there 120 VAC
to the fill solenoid
No
with the wire
removed from
terminal 1 on the 3
min. timer?
Yes
Yes
Replace the
water level
board.
Yes
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?
No
Clean
or replace the
probe housing
Page 19
Descaling Procedure-SteamCraft Ultra and Gemini Series
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.)
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.
6. Let the descaler soak in generator for
approximately one hour:
7. After one hour, turn the unit power
This will drain and rinse the generator
Off:
for about 3 minutes.
4.
Remove descaling port cap and add
with the specified amount of
DISSLOVE:
Do this while the unit is refilling. The generators
can take-up to 8 minutes to refill.
After refill has stopped, add extra tap
5.
(See chart above)
water into the descaling port until
liquid is seen entering the cooking
cabinet.
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
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
Note: Ultra 10 gas will have liquid
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.
After the 3 minute drain cycle
9.
completes, Turn the unit ON and set
the Timer for 20 minutes:
Time/Manual switch is in the timed setting
and the doors are closed.
Make sure the
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.
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