Crown GCX-2-6 User manual

MANUAL 10122R1
INSTALLATION & OPERATION
MANUAL
Gas Cabinet Base Convection Steamer with Direct Steam Kettle(s)
GCX-2-(6,10) GCX-10-(6,10) GCX-2-6-6 GCX-10-6-6
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read
the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment.
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #: ___________________________
Serial #: ___________________________
Date Purchased: ____________________
CROWN FOOD SERVICE EQUIPMENT
Division of Middleby Canada Company Inc.
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: [phone] www.crownsteamgroup.com
Printed in Canada

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 22003-10-09
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
WARNING: Improper installation, operation, adjustment, alteration,
service or maintenance can cause property damage, injury or death.
Read the installation, operating and maintenance instructions
thoroughly before installing, operating or servicing this equipment.
FOR YOUR SAFETY: Do not store or use gasoline or other
flammable vapours or liquids in the vicinity of this or any other
appliance.
PURCHASER: Instructions to be followed in the event that the operator of this
appliance smells gas must be posted in a prominent location. This information
shall be obtained by consulting the local gas supplier.
Do not attempt to operate this unit in the event of a power failure.
Keep the appliance area free and clear from combustibles.
Do not obstruct the flow of combustion and ventilation air.
Adequate clearances must be maintained for servicing and proper operation.
Intended for commercial use only. Not for household use.
This manual should be retained for future reference.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 32003-10-09
TABLE OF CONTENTS
DESCRIPTION PAGE
Important Notes for Installation and Operation ....................................2
Service Connections ........................................................4
Introduction ...............................................................6
1.0 Installation Instructions ...................................................7
2.0 Operation Instructions for Boilers with Standard Controls ........................13
3.0 Operation Instruction for Boilers with CSD-1 Controls ..........................16
4.0 Operation Instructions - Cooker Section and Direct Steam Kettles ................20
5.0 Cleaning Instructions ...................................................23
6.0 Maintenance .........................................................26
7.0 Adjustments .........................................................29
8.0 Troubleshooting .......................................................31

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 42003-10-09
SERVICE CONNECTIONS

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 52003-10-09
SERVICE CONNECTIONS

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 62003-10-09
INTRODUCTION
DESCRIPTION:
Models GCX-2-6, GCX-2-10, GCX-2-6-6 and GCX-2-6-10, convection steamers with direct
steam kettle(s) mounted on cabinet base and a gas fired boiler rated at 200,000, 250,000 or
300,000 BTU. Each steamer has a pan capacity of 6 (2-1/2") pans. Kettle(s) is/are conveniently
mounted beside the compartment cooker complete with mounted steam control valve located in
the kettle leg. Kettle(s) is/are direct connected to boiler and all piping, steam traps and relief
valves are connected to system. Kettle(s) is/are suffixed with either -6 or -10 to indicate the
capacity of that kettle in U.S. gallons.
BASIC FUNCTION:
Gas fired steamers with direct connected steam kettles. The sequence of operation is as
follows:
1. Turn on main power switch. Pilot light will indicate main power is on and fill solenoid will
open and water will begin to fill boiler. Allow 20 minutes to fill generator. OFF shuts off the
boiler controls and opens the automatic blowdown valve, if so equipped, emptying the boiler
and releasing water and steam to the drain. Manual valve will have to be opened to drain
boiler if not equipped with automatic blowdown valve.
2. Boiler pressure gauge should read 9 - 11 psi during operation, 0 psi during shutdown.
3. Burners will cycle on and off as required to maintain pressure.
4. Compartment cooker is ready for use when READY light is on. Place pans of food to be
cooked into compartments and close door(s).
5. Set timer to cooking time desired. Cooking will commence and cooking time may be
interrupted at any time by opening door and resumed again by closing door.
6. Buzzer will sound indicating the end of the cooking cycle and that steam has stopped
entering the compartment. The COOKING pilot will go off and the READY light will come
on. Buzzer must be shut off by turning the timer to its off position.
7. Direct connected steam jacketed kettles consist of a stainless steel bowl and a stainless
steel jacket which envelopes two thirds of the lower surface of the kettle thus forming a
sealed pressure vessel (chamber) into which steam is introduced by means of a manual
valve. Slowly turn steam control valve on to full open position (counterclockwise).
8. Regulate steam control valve depending on type of food being prepared.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 72003-10-09
INTRODUCTION (Continued)
BASIC FUNCTION: (Continued)
9. To empty food from kettle, pull forward on handle slowly to avoid injury from spill and place
kettle in upright position when empty.
GENERAL
The gas boiler in this appliance is designed to ASME Code and approved as a steam heating
boiler restricted to operation at pressure not to exceed 15 psi. The gas boiler is installed in a
60" cabinet base rated at 200,000, 250,000 or 300,000 BTU, operational on Natural or Propane
gas. Boilers may have optional electronic ignition and CSD-1 controls.
1.0 INSTALLATION INSTRUCTIONS
UNPACKING
Immediately after unpacking, check for possible shipping damage. If the appliance is found to
be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Before installing, verify that the gas (natural or propane), the elevation from sea level and the
electrical supply agree with the specification on the data plate. NOTE: If this appliance is being
installed above 2000 feet altitude, contact your authorized service office to assure that the
proper orifice size for your elevation has been installed.
LOCATION
The installation location must be kept free and clear of combustibles. Do not obstruct the flow
of combustion and ventilation air. Clearance from combustible construction must be a minimum
of 3 inches from the sides and 6 inches from the back. The appliance should be installed on a
noncombustible floor. Provide adequate clearances for cleaning, maintenance, service and
proper operation.
Sufficient air should be allowed to enter the room to compensate for the amount of air removed
by any ventilating system and for combustion of the gas burners. Do not obstruct the air flow
into and around the appliance. Do not obstruct the flow of flue gases from the flue duct located
at the rear and above the cabinet. Position the appliance in its final location. Check that there
are sufficient clearances to service the controls, for door swings, etc., so there will be no
problem in making the required supply and drain connections.
Allow enough space between any other piece of equipment or a wall for service access.
Service on the cabinet base may require access to the left and/or right side panels.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 82003-10-09
LEVELLING AND ANCHORING THE APPLIANCE
1. Place appliance in the installation position.
2. Place a carpenter’s level on top of the appliance and turn the adjustable feet to level side-
to-side and front-to-back.
3. Mark hole locations on the floor through the anchoring holes provided in the rear flanged
adjustable feet.
4. Remove appliance from installation position and drill holes in locations marked on the floor.
Insert proper anchoring devices (not supplied).
5. Place appliance back in the installation position.
6. Place carpenter’s level on top of appliance and re-level side-to-side and front-to-back.
7. Bolt and anchor appliance securely to the floor.
8. Seal bolts and flanged feet with silastic or equivalent compound.
INSTALLATION CODES AND STANDARDS
Installation must conform to local codes, or in absence of local codes, with the National Fuel
Gas Code - ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA
B149.1, as applicable, including:
1. The appliance and its individual shut off valve must be disconnected from the gas supply
piping system during any pressure testing of that system at pressures in excess of ½ psig
(3.5 kPa).
2. The appliance must be isolated from the gas supply piping system by closing its individual
manual shut off valve during any pressure testing of the gas supply piping system at test
pressures equal to or less than ½ psig (3.5 kPa).
Electrical grounding must be provided in accordance with local codes, or in the absence of local
codes, with the National Electrical Code ANSI/NFPA 70. In Canada, installation must be in
accordance with the Canadian Electrical Code CSA C22.2.
Ventilation must be provided in accordance with local codes, or in the absence of local codes,
with ANSI/NFPA 96 Standard for Ventilation and Fire Protection of Commercial Cooking
Operations.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 92003-10-09
INSTALLATION CODES AND STANDARDS (Continued)
WIRING DIAGRAM FOR APPLIANCE IS LOCATED INSIDE CABINET DOOR.
EXHAUST FANS AND CANOPIES:
Canopies are set over ranges, ovens, kettles, etc., for ventilation purposes. It is recommended
that a canopy extend 6" past the appliance and be located 6 feet 6 inches from the floor. Filters
should be installed at an angle of 45 degrees or more with the horizontal. This position
prevents dripping of grease and facilitates collecting the run-off grease in a drip pan, usually
installed with the filter. A strong exhaust fan tends to create a vacuum in the room and may
interfere with burner performance or may extinguish pilot flames. Makeup air openings
approximately equal to the fan area will relieve such vacuum. In case of unsatisfactory
performance on any appliance, check with the exhaust fan in the “OFF” position.
Information on the construction and installation of ventilating hoods may be obtained from the
standard for “Vapor Removal from Cooking Equipment”, NFPA No. 96 (latest edition), available
from the National Fire Protection Association, Batterymarch Park, Quincy, MA, USA, 02269.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 10 2003-10-09
SERVICE CONNECTIONS
NOTICE: If this equipment is being installed at over 2,000 feet
altitude and was not so specified on order, contact service
department. Failure to install with proper orifice sizing may void the
warranty.
PLUMBING CONNECTIONS
WARNING: Plumbing connections must comply with applicable
sanitary, safety, and plumbing codes.
WATER SUPPLY CONNECTION
The incoming cold water supply connection, at the rear of the steamer cabinet, requires 3/8"
tubing and water pressure of 25 - 50 psi. A manual shut-off valve must be provided convenient
to the appliance; this valve should be open when the boiler is in operation.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS
NOT COVERED UNDER WARRANTY. SEE WATER QUALITY STATEMENT (PAGE 4.)
DRAIN CONNECTION
The appliance drain (2" IPS) should be piped to a floor drain near the steamer. There should
be no solid drain connection; an “open gap” between the steamer and the floor drain is
required.
GAS CONNECTION
1. The data plate on the cabinet door of the boiler indicates the type of gas your unit is
equipped to burn. DO NOT connect to any other gas type.
Keep the appliance area free and clear from combustible substances. Do not obstruct
the flow of combustion and ventilation air.
2. A 3/4" NPT line is provided at the rear for the connection. Each boiler is equipped with
an internal pressure regulator which is set at 3.5" W.C. manifold pressure for natural
gas or 10.5" W.C. for L.P. gas. Use the 1/8" pipe tap on the burner manifold for
checking pressure.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 11 2003-10-09
GAS CONNECTION (Continued)
An adequate gas supply is necessary. Undersized or low pressure lines will restrict the volume
of gas required for satisfactory performance. A steady supply pressure, between 7" W.C. and
14" W.C. for natural gas and 11" W.C. and 14" W.C. for propane gas is recommended. With all
units operating simultaneously, the manifold pressure on all units should not show any
appreciable drop. Fluctuations of more than 25% on natural gas, and 10% on propane gas, will
create pilot problems and affect burner operating characteristics. Contact your gas company
for correct supply line sizes.
Purge the supply line to clean out any dust, dirt, or foreign matter before connecting the line to
the unit.
CAUTION: The pipe thread compound used when installing pipes
must be a type that is resistant to the action of liquified petroleum or
propane gases.
Codes require that a gas shut-off valve be installed in the gas line prior to the steamer. Make
sure the pipes are clean and free of obstructions, dirt, and piping compound.
WARNING: Prior to start-up, check all joints in the gas supply line
for leaks. Use soap and water solution. Do not use an open flame.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 12 2003-10-09
ELECTRICAL CONNECTIONS
WARNING: Do not connect the appliance to the electrical supply
until after the gas connection has been made.
WARNING: Electrical and grounding connections must comply with
the applicable portions of the National Electrical Code and/or other
local codes.
120 VAC-60 Hz - Single Phase
Make electrical connection to terminal block provided in rear of the appliance. A separate 15
amp supply is needed for each unit.
Refer to the electrical diagram located inside cabinet on door.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 13 2003-10-09
2.0 OPERATION INSTRUCTIONS
WARNING: Do not force the gas control knob. Use only your hand
to turn the gas control knob. Never use any tool. If the gas control
knob will not operate by hand the gas control should be replaced by
a qualified service technician.
WARNING: Do not disassemble the gas control; it contains no
replaceable components. Attempted disassembly or repair may
damage the gas control.
WARNING: In the event of main burner ignition failure, a 5 minute
purge period must be observed prior to re-establishing ignition
source.
For CSD-1 equipped boilers, see section 3.0 Operation Instructions for CSD-1 Equipped Boiler.
BOILER CONTROLS (Inside Cabinet)
Gas steam generators are available with standard boiler controls or ASME CSD-1 complaint
controls. In addition to the ON/OFF power switch and indicator pilot light with standard controls,
the CSD-1 controls have in addition four more indicator pilot lights and a “Reset” switch. Follow
the appropriate instructions for each.
Main Power Switch -ON fills the boiler tank and turns the boiler controls on. You
should allow 20 minutes to fill the tank and generate steam.
- OFF shuts off the boiler controls and opens the automatic
blowdown valve, emptying the boiler tank and releasing water
and steam to the drain. This should be done at least once
daily to remove sediment, lime or scale.
Pilot Light -Indicates main power is ON.
Boiler Pressure Gauge -Should read 9 - 11 psi during operation, 0 psi during
shutdown.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 14 2003-10-09
BOILER CONTROLS (Inside Cabinet) - Continued
Water Level Sight Glass -Observe level of water in the boiler and water quality.
Murkiness in the water indicates inadequate water quality; the
owner must supply proper water to the boiler. See page 4
Water Quality Statement.
Water Level Control -While ON, briefly open the water level control daily to remove
any sediment that might accumulate.
Safety Valve -This valve will release (pop off) if the boiler has too much
pressure. Once a week, this valve should be tripped during
operation to make sure it functions properly.
WARNING: In the event you smell gas, shut down equipment at the
main shut off valve and contact the local gas company or gas
supplier for service.
1. START UP - BOILER OPERATION WITH STANDING PILOT IGNITION
Open manual gas shut off supply valve and if the appliance has a manual blowdown valve,
close it. Open cabinet door and turn ON power switch located on left side. Green pilot light will
come on, water will begin to enter boiler and required water level will be reached in about three
minutes. Observe water gauge glass to verify.
The dial on the combination gas control valve has three positions (ON-PILOT-OFF) for manual
gas control of main burners and pilot. Turn DIAL to PILOT. Depress dial and light pilot burner
located on centre main burner of boiler. Maintain dial in depressed position for about 30
seconds and release. Observe that the pilot burner flame stays on. If at any time the flame
should become extinguished, a 5 minute period of complete shut off of gas supply is required
before relighting.
Turn dial to ON and burners should ignite. Steam generation will now commence and be
completed in approximately 15 minutes. Steam generation should reach approximately 11 psi
as indicated on the pressure gauge on the boiler.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 15 2003-10-09
2. START UP - BOILER OPERATION WITH ELECTRONIC IGNITION
Open manual gas supply valve.
Open cabinet door and turn main power switch ON. Green pilot light will come on, water will
begin to enter boiler and required water level will be reached in about 3 minutes. Observe
water gauge sight glass to verify.
The dial on the gas combination control valve has 2 positions (ON and OFF).
ON - [Rotated counterclockwise] permits gas to flow to the pilot and main burner.
OFF - [Rotated clockwise] prevents gas flow to pilot and main burner.
NOTE: Units are shipped with the control in the ON position.
With the gas control valve, power switch and water supply all ON, water begins entering the
boiler and gas flows to the pilot: Spark will begin in 2 to 3 seconds. If the pilot fails to light in 90
seconds, the control will provide 100% lockout. If this occurs: Wait 5 minutes, then turn power
switch off for one minute before turning power switch back on.
Once the pilot is lit and the required water level has been reached, the main burners will ignite.
Burner will cycle to meet the steam pressure required. Steam pressure should reach
approximately 11 psi as indicated on the pressure gauge on the boiler.
DAILY SHUT DOWN
Turn power switch off.
Open blowdown valve if so equipped.
COMPLETE BOILER SHUT DOWN
If boiler is not intended to be operated for a lengthy period of time, shut off all power, gas and
water supplies to the appliance. Open blowdown valve if so equipped.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 16 2003-10-09
3.0 OPERATION INSTRUCTION FOR BOILERS WITH CSD-1 CONTROLS
Initial Start-Up Procedure with Standing Pilot
1. Open the manual gas shut-off supply valve.
2. Close the manual blowdown valve, if so equipped.
3. Light the pilot burner.
The dial on the gas combination valve has three positions (ON - OFF - PILOT) for manual
gas control of main burners and pilot burner. Turn the dial on the gas combination valve to
“PILOT”, depress the dial and light the pilot burner on the centre burner. Maintain the dial in
depressed position for about 30 seconds and release. Observe the pilot flame stays ON.
Turn dial to “ON”.
If at any time the flame should become extinguished, a five (5) minute purging is
required before relighting is attempted.
4. Open cabinet door and turn “ON” the power switch.
The green pilot light will come “ON”. Water should begin to enter the boiler. When enough
water has entered the boiler the (amber) “STANDBY” pilot light will come on.
5. Press the “RESET” switch to begin boiler operation.
The “STANDBY” pilot light will go off and the boiler will begin operation.
Initial Start-Up Procedure with Electronic Ignition
1. Open the manual gas supply valve and water supply. Turn on power supply to the unit.
2. Open cabinet door. With gas control valve, water supply and power switch ON, green
pilot light will come on. Water will begin to enter the boiler. When enough water has
entered the boiler the (amber) “STANDBY” pilot light will come on.
The dial on the gas combination control valve has two positions (ON and OFF).
ON - (Rotated counterclockwise) permits gas to flow to the pilot and main burner.
OFF - (Rotated clockwise) prevents gas flow to pilot and main burner.
NOTE: Units are shipped with the control in the ON position.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 17 2003-10-09
3.0 OPERATION INSTRUCTION FOR BOILERS WITH CSD-1 CONTROLS (Continued)
3. Press the “RESET” switch to begin the boiler operation. The “STANDBY” pilot light will go
off and the boiler will begin operation.
Daily Startup Procedure
1. Close the manual blowdown valve, if so equipped.
2. Examine that the pilot burner flame is burning. If the pilot burner is out, a five (5) minute
period of complete gas supply shut off is required before relighting.
3. Open cabinet door and turn “ON” the power switch.
The green pilot light will come “ON”. Water will begin to enter the boiler. When enough
water has entered the boiler the (amber) “STANDBY” pilot light will come on.
4. Press the “RESET” switch to begin the boiler operation. The “STANDBY” pilot light will
go off and the boiler will begin operation.
Daily Shutdown Procedure
1. Turn “OFF” the power switch. Observe that the burners go off.
2. Open the manual blowdown valve, if so equipped. If the appliance is equipped with an
automatic blowdown solenoid valve, the boiler’s contents, water and steam will be blown out
and exhausted through the appliance drain. The cold water solenoid valve will be activated.
Complete Shutdown Procedure
If the appliance is not intended to be operational for a lengthy period, then shut it down
completely.
1. Open the manual blowdown valve, if so equipped.
2. Shut off all supplies of power, gas and water to the appliance.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 18 2003-10-09
3.0 OPERATION INSTRUCTION FOR BOILERS WITH CSD-1 CONTROLS (Continued)
Normal Boiler Operating Cycle
Water Fill Cycle
3. On the initial filling of the boiler, the reset switch must be activated to initialize the safety
lockout circuit. Once the water in the boiler has reached the proper level, the level control
will open the circuit to the fill solenoid valve, stopping the flow of water to the boiler. As the
water is consumed in the production of steam, the level control will close the circuit to the fill
solenoid and water will be supplied to the boiler.
Firing Cycle
The gas valve is operated by pressure sensing devices. On the initial operation of the boiler,
steam generation should reach 11 psi in approximately 15 minutes. At this point the “Operating
Pressure” switch will open, closing the gas valve. When pressure drops to 9 psi, the pressure
switch closes, the gas valve will open and ignition should occur.
Should the pressure rise more than 14.5 psi the “Override Pressure Switch” will close the circuit
to the override solenoid valve, releasing excess steam.
Condensing Drain
A thermostat is located in the drain assembly and is activated by the temperature of steam.
The thermostat opens the cooling solenoid valve, in turn supplying water to the drain to
condense steam.
Automatic Blowdown Valve
If the unit has an automatic blowdown valve, it is activated by the main power switch. The
boiler will be drained should the main power switch be turned “OFF”.
SAFETY LOCKOUT CONDITIONS
High Temperature Condition
A high temperature safety device is installed on the boiler. Should the temperature exceed the
limit of this device, the boiler will be shut down and put in a state of lockout. The “Temperature”
pilot light (red), and the “Standby” pilot (amber), will come on.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 19 2003-10-09
SAFETY LOCKOUT CONDITIONS (Continued)
High Pressure Condition
A high pressure safety switch is installed on the boiler. Should the pressure exceed the limit of
this device, the boiler will be shut down and put into a state of lockout. The “Pressure” pilot light
(red), and the standby pilot light (amber), will come on. Should this device fail to operate, the
safety relief valve will open.
Low Water Condition
A second low water safety cut off is supplied with the boiler. Should the water level fall below
normal operating levels, this device will shut down and put the boiler in a state of lockout. The
“Low Water” pilot light (red), and the “Standby” pilot light (amber) will come on.

INSTALLATION AND OPERATION MANUAL, GAS FIRED PRESSURELESS COOKER WITH
DIRECT STEAM KETTLES, MODELS GCX-2-6, GCX-2-10, GCX-2-6-6 AND GCX-2-6-10
PART NUMBER 10122R1 20 2003-10-09
4.0 OPERATION INSTRUCTIONS
COOKER SECTION
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
Start-up procedures for your cooker must be completed once daily prior to operation (see
instruction plate or previous section in this manual for boiler start up procedures).
With ready pilot light on, preheat cooker compartment for one minute when the cooker is to be
first used for the day or whenever the compartment is cold.
1. Close compartment doors and set timer to “1 minute”.
2. When buzzer sounds, set timer to the “OFF” position.
3. Cooker is now ready for cooking.
4. With cooking compartment preheated and ready pilot light on, place pans of food to be
cooked into compartment and shut door.
5. Set timer to cooking time desired. Cooking cycle may be interrupted at any time by opening
door and resumed again by closing door.
6. When buzzer sounds, it indicates the end of the cooking cycle and that no more steam is
entering the compartment. Cooking pilot light will go off and ready pilot light will come on.
Buzzer must be shut off by turning the timer to its off position.
CAUTION: An obstructed drain can cause personal injury or
property damage.
Frequently check that the compartment drain and plumbing is free of all obstructions. Never
place food containers, food or food portion bags in the cooking compartment in such a way that
the compartment drain becomes obstructed.
Each compartment is equipped with a removable drain screen. Frequently check the drain
screen for accumulation of food particles. Should food particles accumulate against, or clog the
drain screen, remove it, clean it thoroughly and then replace it in its original position.