Cleveland 24-CGM-200 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
SEQUENCE OF OPERATIONS
Convection Top
Electronic Timer
1. To turn the unit on, depress the red on/off rocker switch at the base.
•115 VAC is sent to the red indicator light in the switch
•115 VAC is sent to the 24 VAC timer transformer.
•24 VAC is sent to the timer.
•115 VAC is sent to the timed/manual switch.
2. With the timed/manual switch in the timed position (with time on the timer) or in the manual
position.
•The timer display alternates between “PAUS” and the set time.
•115 VAC is sent through the optional door switch.
•115 VAC is sent to the condensate solenoid and cold water is sent to the condensate
spray nozzle.
•115 VAC is sent to the steam solenoid and steam is sent to the cooking cabinet. There
the steam is directed around the product and pulled down the drain by the condensate
spray.
•When the cooking compartment reaches 193 degrees internally the thermal switch closes
and the timer begins to count down.
3. When the timer counts down in the timed position:
•115 VAC is removed from the condensate circuit.
•115 VAC is removed from the steam solenoid.
4. The unit is turned off by depressing the red rocker switch.

CLEVELAND RANGE
SEQUENCE OF OPERATIONS
Convection Top
Mechanical Timer
1. To turn the unit on, depress the red on/off rocker switch at the base.
•115 VAC is sent to the red indicator light in the switch
•115 VAC is sent to the timed/manual switch.
2. With the timed/manual switch in the timed position (with time on the timer) or in the manual
position.
•115 VAC is sent through the optional door switch.
•115 VAC is sent to the condensate solenoid and cold water is sent to the condensate
spray nozzle.
•115 VAC is sent to the steam solenoid and steam is sent to the cooking cabinet. There
the steam is directed around the product and pulled down the drain by the condensate
spray.
3. When the timer counts down in the timed position:
•115 VAC is removed from the condensate circuit.
•115 VAC is removed from the steam solenoid.
•115 VAC is sent to the 3-second timer
•115 VAC is sent from the 3-second timer to the buzzer for 3 seconds.
4. The unit is turned off by depressing the red rocker switch.

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
SEQUENCE OF OPERATIONS
Gas Boiler Base
1. To turn the unit on, depress the red on/off rocker switch.
x115 VAC is sent to the terminal block in control box.
x115 VAC is sent to normally open blowdown valve closing it.
x115 VAC is sent to L1 and L2 of the water level board.
2. With the water level board energized and no water in the boiler
x115 VAC is sent from the IND terminal to the low water indicator light.
x115 VAC is sent from the WF terminal to the fill solenoid.
xThe fill solenoid opens and the boiler fills.
xThe water fills to the low probe shorting it to ground
x115 VAC is removed from the IND terminal and the low water indicator light is
de-energized.
x115 VAC is sent from the HTR terminal through the normally closed contact of
the high-pressure switch to the amber reset switch,
x115 VAC is sent through the normally closed R1B contact to energize the amber
light.
xIf the low probe is not grounded for 20 seconds, 115 VAC is removed from
HTR and sent back to IND energizing the low water indicator light.
3. When the momentary amber switch is depressed 115 VAC is sent to the R1 relay closing it.
xThe normally closed R1B contacts open de-energizing the amber light.
xThe relay latches itself through contacts 3 and 5 with a jumper to the coil.
xIf either the high-pressure switch opens or the low probe circuit on the water level
board opens, then the latch circuit opens.
xWhen the water level or pressure returns to a safe condition the amber light will
energize and the process may begin again.
xThe R1B relay contacts close sending 115 VAC through the normally closed operating
pressure switch to the 24 VAC transformer.
x24 VAC is sent to the ignition module.
4. With 24 VAC to the ignition module 24 VAC is sent to the gas valve.
xThe gas valve is energized.
xThe gas valve opens to the initial stage and sends gas to the burner.
xThe initial stage for a 200,000 BTU boiler base natural gas is 1.25” W.C.
xThe initial stage for a 300,000 BTU Boiler base natural gas is .75” W.C.
xThe inital stage for L.P. boiler base is 2.5” W.C.
xA spark is generated at the igniter.
xThe gas is ignited and the flame rectifies the AC current.
xThe ignition module reads 1.5 micro amps DC current through the ground wire.

xIf the module does not read 1.5 micro amps DC in 4 seconds it will lock out.
xWhen the ignition module locks out 24 VAC is sent to the buzzer from the alarm
terminal on the module.
xThe gas valve continues to open to 3.5” water column in 6-8 seconds for natural gas
boiler base and 10” W.C. for L.P.
5. The water in the boiler is heated to steam.
xAs steam is generated and pressure builds the air is pushed out through the steamtrap.
xWhen steam goes through the steam trap and heats it to 192 degrees it closes.
6. Pressure builds in the boiler to the set point (8 PSI).
xThe operating pressure switch opens and the heat circuit is de-energized.
xWhen the pressure drops below the set point the heat circuit is energized and the heat
process begins again.
7. Water continues to fill until the high probe is grounded.
xWhen the high probe is grounded the WF terminal on the water level board is de-
energized.
xThe fill solenoid closes until the high probe is ungrounded for 5 seconds.
xIf the water level drops below the high probe for more than 5 seconds the WF terminal
is energized and the water fill circuit begins again.
8. When the unit is turned off, by depressing the red rocker switch,
x115 VAC is removed from the heat circuit.
x115 VAC is removed from the drain circuit and the normally open drain valve opens
allowing the unit to drain.
x115 VAC is sent to the 3-minute timer.
xThe three-minute timer will energize the fill solenoid for 3 minutes while the steamer
drains.

CLEVELAND RANGE
SEQUENCE OF OPERATIONS
Gas Boiler Base
With Secondary Low Water Cut Off Switch
1. To turn the unit on, depress the red on/off rocker switch.
x115 VAC is sent to the terminal block in control box.
x115 VAC is sent to normally open blowdown valve closing it.
x115 VAC is sent to L1 and L2 of the water level board.
x115 VAC is sent to the open contacts of the low water cut-off switch.
x115 VAC is sent through the normally closed contacts of the R2 relay to the low water
indicator light.
2. With the water level board energized and no water in the boiler
x115 VAC is sent from the IND terminal to the normally open contacts of R2A.
x115 VAC is sent from the WF terminal to the fill solenoid.
xThe fill solenoid opens and the boiler fills.
xThe rising water raises the float on the low water cut-off switch closing it.
xR2 relay is energized.
xThe normally closed contacts R2A open de-energizing the low water indicator
light.
xThe normally open contacts of R2A close energizing the low water indicator light.
xThe water fills to the low probe shorting it to ground
x115 VAC is removed from the IND terminal and the low water indicator light is
de-energized.
xIf the low water cut off float switch opens the low water indicator light re-
energizes.
x115 VAC is sent from the HTR terminal to the normally open contacts of R2B.
xWith water in the unit and the R2 relay energized, 115 VAC is sent through the
normally closed contact of the high-pressure switch to the amber reset switch,
x115 VAC is sent through the normally closed R1B contact to energize the amber
light.
3. When the momentary amber switch is depressed 115 VAC is sent to the R1 relay closing it.
xThe normally closed R1B contacts open de-energizing the amber light.
xThe relay latches itself through contacts 3 and 5 with a jumper to the coil.
xIf either the high-pressure switch opens, the secondary low water cut off switch
opens, or the low probe circuit on the water level board opens, then the latch
circuit opens.
xWhen the water level or pressure returns to a safe condition the amber light will
energize and the process may begin again.
xThe R1B relay contacts close sending power through the normally closed operating
pressure switch to the 24 VAC transformer.
x24 VAC is sent to the ignition module.

4. With 24 VAC to the ignition module, 24 VAC is sent to the gas valve.
xThe gas valve is energized.
xThe gas valve opens to the initial stage sending gas to the burner.
xThe initial stage Natural gas pressure for the 200 BTU boiler base is 1.2” W.C.
xThe initial stage Natural gas pressure for the 300 BTU boiler base is .75”W.C.
xThe initial stage LP gas pressure is 2.5” W.C. for both boiler bases.
xA spark is generated at the igniter.
xThe gas is ignited and the flame rectifies the AC current.
xThe ignition module reads 1.5 micro amps DC current through the ground wire.
xIf the module does not read 1.5 micro amps DC in 4 seconds it will lock out.
xWhen the ignition module locks out 24 VAC is sent to the buzzer from the alarm
terminal on the module.
xThe gas valve continues to open to the second stage in 6-8 seconds.
xThe second stage natural gas pressure is 3.5” W.C.
xThe second stage LP gas pressure is 11” W.C.
5. The water in the boiler is heated to steam.
xAs steam is generated and pressure builds the air is pushed out through the steamtrap.
xWhen steam goes through the steam trap and heats it to 192 degrees it closes.
6. Pressure builds in the boiler to the set point.
xThe operating pressure switch opens and the heat circuit is de-energized.
xWhen the pressure drops below the set point the heat circuit is energized and the heat
process begins again.
7. Water continues to fill until the high probe is grounded.
xWhen the high probe is grounded the WF terminal on the water level board is de-
energized.
xThe fill solenoid closes until the high probe is ungrounded for 05 seconds.
xIf the water level drops below the high probe for more than 05 seconds the WF
terminal is energized and the water fill circuit begins again.
8. When the unit is turned off, by depressing the red rocker switch, 115 VAC is sent to the 3-
minute timer.
xThe three-minute timer will energize the fill solenoid for 3 minutes while the steamer
drains.
x115 VAC is removed from all other circuits.
xThe red light in the power switch is de-energized.