CROWN Gas Fired Steamer GCX-2 User Manual

Installation & Operation Manual
Gas Fired Steamer
GCX-2 & GCX-10 Model GCX-10

IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this manual for the life of the equipment:

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.

SAFETY PRECAUTIONS

Before installing and operating this equipment, be sure everyone involved in its operation is fully trained and aware of precautions. Accidents and problems can be caused by failure to follow fundamental rules and precautions.
The following symbols, found throughout this manual, alert you to potentially dangerous conditions to the operator, service personnel, or to the equipment.
DANGER
This symbol warns of immediate hazards that will result in severe injury or death.
WARNING
This symbol refers to a potential hazard or unsafe practice that could result in injury or death.
CAUTION
This symbol refers to a potential hazard or unsafe practice that could result in injury, product damage, or property damage.
NOTICE
This symbol refers to information that needs special attention or must be fully understood, even though not dangerous.

IMPORTANT NOTES FOR INSTALLATION AND OPERATION

WARNING
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.
WARNING
FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
NOTICE
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.
NOTICE
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.
NOTICE
Do not attempt to operate this unit in the event of a power failure.
NOTICE
This product is intended for commercial use only. NOT FOR HOUSEHOLD USE.
NOTICE
This manual should be retained for future reference.
It is recommended that this manual be read thoroughly and that all instructions be followed carefully. Copyright © 2021 by Crown. All rights reserved. Published in the United States of America.

SERVICE CONNECTIONS

SERVICE CONNECTIONS
– ELECTRICAL CONNECTION: 1/2” (13 mm) conduit connection to controls.
120 VAC-60Hz-1PH. 2 Amps per compartment or as specified on the data plate.
– BOILER FEED WATER: 1/2” (13 mm) NPT at 25-50 PSI (170-345 kPa).
– CONDENSATE COLD WATER: 1/2” (13 mm) NPT at 25-50 PSI (170-345 kPa) (OPTIONAL)
– DRAIN: 2” (51 mm) IPS piped to open floor drain. No solid connection.
– GAS CONNECTION: 3/4” (19 mm) IPS supply line required.
– STEAM TAKE-OFF CONNECTION: 3/4” (19 mm) IPS optional to operate adjacent equipment.

GAS SUPPLY AND SPECIFICATIONS

MODEL| GAS SUPPLY| AVAILABLE
CABINET WIDTH
---|---|---
WATER COLUMN PRESSURE| BTU/HR| KW/HR| 24″| 36″
GCX-2-[24,36)
GCX-10-[24,36)| Natural
7″ – 14″
(178 mm – 355 mm)| Propane
11″ – 14″
(279 mm – 355 mm)| 200,000| 59.| Yes| Yes
250,000| 73.| No| Yes
300,000| 88.| No| Yes
MODEL| COMPARTMENT PAN CAPACITY| SHIPPING
WEIGHT
(24″ CABINET)| SHIPPING
WEIGHT
(36″ CABINET)| MINIMUM
CLEARANCE
---|---|---|---|---
PAN DEPTH
1″| 2-1/2″| 4″| 6″
GCX-2-[24,36]| 6| 3| 2| 1| 630 lbs.
[286 kg]| 764 lbs.
[347 kg]| SIDES
BACK| 3″ [76] 6″ [152]
GCX-10424,36]| 10| 5| 3| 2| 670 lbs.
[304 kg]| 840 lbs.
[381 kg]

WATER QUALITY STATEMENT

Water is the essential ingredient in steam equipment, water quality is the major factor affecting the performance of your appliance. Crown Steam Group offers a Comprehensive Water Treatment System which exceeds our minimum water requirements. Proof of installation and proper cartridges replacement is required for warranty coverage. Water supply to Crown Steam Group steamers must be within these guidelines.

Total dissolved solids…………..Less than 60 PPM
Total alkalinity …………………..Less than 20 PPM
Silica ………………………………..Less than 13 PPM
Chlorine ………………Less than 1.5 PPM
pH Factor …………..6.8 – 7.3

Water that does not meet these standards should be treated with the installation of Middleby’s Water Treatment System. Call 919-762-1000 if you have questions concerning your water meeting these parameters.
*Failure or malfunction of this appliance due to poor water quality is not covered under warranty. Reference www.crownsteamgroup.com for complete warranty details and instructions.

MISCELLANEOUS
If installed on any floor with an epoxy coating or other combustible floor surface (i.e., a surface other than quarry tile, cement, or natural stone), contact the factory for installation options as damage due to improper installation is not covered under warranty.

INTRODUCTION

Description
Models GCX-2 and GCX-10, convection steamers mounted on cabinet base and a gas-fired boiler rated at 200,000, 250,000, or 300,000 BTU. GCX-2 steamer has a pan capacity of 6 (2½”) pans, and the GCX-10 cooker has a pan capacity of 10 (2½”) pans.

Basic Function
Gas Fired Steamers
The sequence of operation is as follows:

1. Turn on the main power switch. The pilot light will indicate main power is on and fill solenoid will open and water will begin to fill the boiler. Allow 20 minutes to fill the boiler. 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. A manual valve will have to be opened to the drain boiler if not equipped with an automatic blowdown valve.
2. The boiler pressure gauge should read 9 – 11 psi during operation, and 0 psi during the shutdown.
3. Burners will cycle on and off as required to maintain pressure.
4. The compartment cooker is ready for use when the READY light is on. Place pans of food to be cooked into compartments and close doors(s).
5. Set timer to cooking time desired. Cooking will commence and cooking time may be interrupted at any time by opening the door and resumed again by closing the door.
6. The 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. The buzzer must be shut off by turning the timer to its off position.

GENERAL
The gas boiler is designed to ASME Code and approved as a steam heating boiler restricted to operation at a pressure not to exceed 15 psi. The gas boiler may be in a 24” cabinet base rated at 200,000 BTU, 36” 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 CSD1 controls.

INSTALLATION INSTRUCTIONS

Unpacking

IMMEDIATELY INSPECT FOR SHIPPING DAMAGE
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. We cannot assume responsibility for damage or loss incurred in transit.
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 non-combustible 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 for 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.

Leveling 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 the 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
Gas installation to 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.

THE WIRING DIAGRAM FOR THE APPLIANCE IS LOCATED INSIDE THE 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 the 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 a vacuum. In case of unsatisfactory performance on any appliance, check with the exhaust fan in the “OFF” position.

Connections
NOTICE
If this equipment is being installed at over 2,000 feet altitude and was not so specified on order, contact the 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.
IMPORTANT
If your equipment was supplied with split water lines and a filter, connect the filter system to the connection marked “BOILER FEED” only. Make a second connection to the “CONDENSER FEED” from a cold and unfiltered water supply.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS NOT COVERED UNDER WARRANTY. SEE WATER QUALITY STATEMENT.
Drain Connection
The steamer drain (2” IPS) should be piped to a floor drain near the steamer (NOT directly under the steamer). There should be no solid drain connection; an “open gap” between the steamer and the floor drain is required.
Gas Connection
NOTICE
If this equipment is being installed at over 2,000 feet altitude and was not so specified on order, contact the service department. Failure to install with proper orifice sizing may void the warranty.

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 the pressure.

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 the 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.
NOTICE
If applicable, the vent line from the gas appliance pressure regulator shall be installed to outdoors in accordance with local codes or, in the 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.
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.

Electrical Connections

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 an electrical connection to the terminal block in the rear of the unit. A separate 15 amp supply is needed for each unit. Refer to the electrical diagram located inside the cabinet on the door.

OPERATION

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 the ignition source.

For CSD-1 equipped boilers, see this section for Operation Instructions for CSD-1 Equipped Boilers.
Boiler Controls (Inside Cabinet)

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 the shutdown.
Water Level Sight Glass| – Observe the 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 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.

CAUTION
If you smell gas during the lighting procedure, immediately shut off the gas supply until the leak has been corrected.

1. START-UP – BOILER OPERATION WITH STANDING PILOT IGNITION
   Open the manual gas shut-off supply valve and if the appliance has a manual blowdown valve, close it. Open the cabinet door and turn ON the power switch located on the left side. A Green pilot light will come on, water will begin to enter the boiler, and the 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 pilots. Turn DIAL to PILOT. Depress dial and light burner are located on the center main burner of the boiler. Maintain the 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 the dial to ON and burners should ignite. The 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.

2. STARTUP – BOILER OPERATION WITH ELECTRONIC IGNITION
   Open manual gas supply valve.
   Open the cabinet door and turn the main power switch ON. Green pilot light will come on, water will begin to enter the boiler and the required water level will be reached in about three minutes. Observe the water gauge sight glass to verify.

Operation Instructions for Boilers with CSD-1 Controls
INITIAL START-UP PROCEDURE

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 the 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 center burner. Maintain the dial-in depressed position for about 30 seconds and release. Observe that the pilot flame stays ON. Turn the 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 the 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.

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 the 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.

Normal Boiler Operating Cycle
Water Fill Cycle
On the initial filing 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 the 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.
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.

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 the ready pilot light on, preheat the 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 the timer to “1 minute”.
2. When the buzzer sounds, set the timer to the “OFF” position.
3. The cooker is now ready for cooking.
4. With the cooking compartment preheated and ready pilot light on, place pans of food to be cooked into the compartment, and shut the door.
5. Set timer to cooking time desired. The cooking cycle may be interrupted at any time by opening the door and resumed again by closing the door.
6. When the buzzer sounds, it indicates the end of the cooking cycle and that no more steam is entering the compartment. The cooking pilot light will go off and the ready pilot light will come on. The 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 are 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.

Shutdown

a) To shut down the cooking compartment, set timers to their OFF position and leave doors slightly open.
b) At the end of the day, the steam supply must be shut off. Details are on the boiler instruction plate or in the previous section of this manual.

WARNING
Never spray water into electric controls.
NOTICE
Contact the factory, the factory representative or a local service company to perform maintenance and repairs should the appliance malfunction. Refer to warranty terms.

PERIODIC MAINTENANCE

WARNING
Disconnect the unit from the power supply before cleaning or servicing the appliance.

IMPORTANT INSTRUCTIONS

Be sure to flush your boiler water level control daily. Failure to follow this procedure can cause the control to malfunction resulting in serious boiler damage.

The Boiler Water Level Control installed on your boiler requires periodic maintenance. As boiler water circulates into the float chamber, sand, scale, and other sediment may be deposited in the float chamber. While the chamber has been designed with a large accumulation bowl, it is necessary to flush the sediment from the chamber by blowing down the control so that the accumulation of sediment does not interfere with the movement of the float in the control. The control must be flushed at least once a day.

CAUTION
Protect yourself. When flushing control, hot water and steam will flow out of the drain. When flushing control, note water level in gauge glass, allow the boiler to fill if necessary, and also to come up to temperature. Before flushing control, note that the water level in gauge glass is within operating range and the boiler pressure is at least 6 psi. While the boiler is being fired, open the blowdown valve at bottom of control by rotating the handle counterclockwise about 1/4 turn to fully open the valve. Opening the blowdown valve also checks the cut-off operation. The float should drop shutting burners off, hot water and steam will flow out the drain flushing away sediment.

CAUTION
If the burner does not shut off during blowdown, immediately discontinue the use of the appliance and call for service.
Continue draining water for about fifteen (15) seconds, from control until water is clean. Manually close valve. Recheck gauge glass. If the water level has dropped significantly, wait for the boiler to restore water level and pressure and repeat if necessary.

Cleaning

CAUTION
Do not use cleaning agents that are corrosive.

1. Keep exposed cleanable areas of the unit clean at all times.
2. Thoroughly wash oven cavities, door liners, and pan racks at the end of each day, or as required, with a mild detergent and water to prevent bacterial growth and odors.
3. Remove drain screens from inside compartment drains. Using a plastic bottle brush and mild detergent, clean inside the drain opening ensuring there is no food residue or blockage. Clean the drain screen and replace it in its original position.
4. Wash gasket sealing surface daily with mild detergent to remove harmful food acids.
5. Clean around burner air mixer and orifice if lint has accumulated.
6. Visually assure carry-over ports are unobstructed.
7. Rinse the entire unit and dry. DO NOT GET WATER in the electrical box or any electrical component.

Adjustments

At least twice a year have an authorized service technician clean and adjust the unit for maximum performance.
Boiler Descaling Instructions
It is recommended that the boiler should be checked every 90 to 120 days for scale build-up. Regular maintenance should be carried out at this time.
If the boiler has been descaled, a new Anode should be installed in the boiler to help extend its life.

1. With the boiler empty, close the manual blowdown valve. If the appliance is equipped with automatic blowdown, turn the water supply OFF to appliance. Turn the power switch ON. This will energize and close the blowdown valve.
2. Remove 3/4” pipe plug from fitting on the left front of the boiler.
3. Insert appropriate hose or tube through fitting and pour in (½) half-gallon (U.S.) of CLR Descaling Solution or use the Optional Deliming Assembly DPA-1 available from your dealer. For appliances equipped with CSD-1, a descaling solution must be introduced through a hand hole.
4. Replace 3/4” pipe plug securely.
5. Open water supply to appliance allowing water to fill the boiler to the required level.
6. Let appliance cycle, allow two hours for descaling and cleaning. DO NOT TURN STEAM ONTO THE COMPARTMENTS.
7. Open both the blowdown and low water level control valves for complete drainage and then close both valves. An appliance equipped with automatic blowdown – turn OFF power switch and open low water control valve. This will allow complete drainage. Once drained close the water level control valve.
8. Turn appliance switch ON. When a boiler is completely filled, turn the power switch OFF. This will rinse and drain the boiler. Appliance with manual blowdown valve must be opened to drain.
9. Complete Step 8 twice to assure the boiler is completely rinsed. 10. The appliance is now ready for use.

Calibrate Pressure Switches
NOTICE
Pressure switches are factory set. Calibration is only required if pressure switches are replaced or if the adjustment is required.
The pressure switch range is from 1 to 15 psi.
Adjust all settings to maximum on high signal adjustment screw on pressure switches.
Adjust in the following sequence:

• High limit pressure switch.
• Override pressure switch.
• Operating pressure switch.
• Turn the screw clockwise to increase, and counterclockwise to decrease pressure.
• Use the relief valve to release pressure from the boiler for setting adjustments.

1. HIGH LIMIT PRESSURE SWITCHES
   Allow pressure to build until the unit shuts off. This should occur at 15 psi. Set the high signal to switch at 14.5 psi on the gauge and the low signal to 13.0 psi.

2. OVERRIDE PRESSURE SWITCHES
   Allow pressure to increase to 13 psi. Set the high signal to switch at 13 psi on the gauge and the low signal to 11 psi.

3. OPERATING PRESSURE SWITCHES
   Set the high signal to switch at 11 psi on the gauge and the low signal to 9 psi.

4. Release pressure in the boiler to below 9 psi. The burner will come on. Once pressure has reached 11 psi, burners will shut off. Repeat this process several times to make sure burners come on at 9 psi and shut off at 11 psi.

Once completed, pressure switches have been calibrated. Should your unit not have the High Limit pressure switch, start the procedure at the Override pressure switch.

Service

Contact your local authorized service office for any repairs or adjustments needed on this equipment.
NOTICE
Contact the factory, the factory representative, or the local service company to perform maintenance and repairs.

Troubleshooting

Door Leaks

1. Check for damage to the door gasket.
2. Compartment drain opening or associated piping may be blocked.

Water Accumulates in the Compartment

1. The compartment drain screen is clogged. Remove and clean thoroughly and replace.

Water Not Being Supplied to Boiler

1. The water supply is “OFF”.
2. Defective water fill solenoid valve.
3. Water level control clogged or defective, unable to operate fill valve.
4. Check drain valve is closed. Also, check that the water level control valve is closed.
5. Supply water pressure too low.

Automatic Blowdown Valve Does Not Drain

1. Defective blowdown valve.
2. Heat exchanger build-up of sealant clogging drain lines and valve.

Boiler Achieves Pressure Slower than Normal

1. A heavy build-up of lime or sealant hampering heat transfer. Call for service to inspect the interior of the boiler. Should a considerable amount of sealant be found, have steam lines, water level control, and valve also inspected.

Safety Valve Blows

1. Defective safety valve.
2. Pressure too high. The pressure switch requires adjustment (lower) or may be defective.

Burners Produce Carbon Deposits

1. Wrong size orifices.
2. Burner air not adjusted properly.
3. Wrong gas supply.
4. Incorrect pressure at supply.

Burners Do Not Come On

1. The gas supply to the unit is “OFF”.
2. The Manual shut-off valve is “OFF”.
3. The pilot is out.
4. The power supply is “OFF”.
5. The water level has not been reached. Check water supply and water level control.
6. Pilot may require flame adjustment on option electronic ignition units.
7. If the water is at the proper level, check the relay which energizes the pressure switch and gas valve.
8. The pressure switch may need to be replaced if the relay is operating.
9.  Check gas control. If energized but not operating, have replaced.

Pilot Light Does Not Ignite (electronic ignition)

1. The gas control knob is in the “OFF” position.
2. The loose or dirty wire connection to the ignition module, clean/or tighten.
3. Ignition cable shorting out. Check that it is not in contact with metal or damaged.
4. Defective ignition module.
5. The unit is 100% locked out. Turn off and try in five minutes.
6. Dirty flame sensor. Clean with emery cloth.
7. Pilot burner/ignitor sensor, cracked ceramic insulator. Have replaced.
8. Check for too much draft in the room.

COOKING CHART

The following table lists suggested cooking times and weights. These times, which will vary depending on initial product temperature, size, shape, etc., are approximate and should be adjusted to suit your operation.
PRODUCTS TO BE COOKED IN SOLID PANS

Rice, Long Grain
(Cover with 4 cups water per pound.)| 25| 2 lb.
Pasta (Place perforated pan inside solid
pan,cover pasta with cold water.)
Spaghetti, Regular/Vermicelli
Macaroni, Shells/Elbows
Noodles, ½” wide
Lasagna Noodles| 12 – 15
15 – 18
12 – 15
15 – 18|
Frozen Casseroles, Lasagna| 35| Full Pan
Meat Loaf, 3 – 5 pounds each| 40| 15 lb.
Beef
Ground Chuck
Sliced as Purchased| 20 – 25
35 – 40| 10 lb.
10 lb.
Shrimp, Frozen, 10 per pound| 5| 4 lb.
Beans
Baked
Refried| 9
9| 10 lb. Can
10 lb. Can
Canned Vegetables| 6| 10 Lb Can
Prunes, Dried| 12 to 15|
Clams
Frozen
Fresh, Cherrystone| 10 – 12
5 – 6| 3 Doz.
3 Doz.
King Crab, Frozen
Claws
Legs| 4
4 – 6| 2-1/2 lb.
4-1/2 lb.
Lobster Tail, Frozen
Lobster, Live, 10 – 12”| 6
5| 10 lb.
4 Per Pan
Salmon Fillets, Frozen, 8 ounces each| 5| 7-1/2 lb.
Scallops, Fresh| 4| 3 lb.
Scrod Fillets, Fresh| 3 – 5| 4 lb.
Eggs
Hard-Cooked
Soft Cooked
Soft Yolk for Caesar Salad| 15
9 – 10
6 – 8| 4 Doz.
4 Doz.
4 Doz.
Chicken – Breasts, Legs, Thighs| 20| 15 lb.
Turkey, Frozen
Breasts (2)
Cut Lengthwise| 90
55| 6 – 7 lb. Each
20 – 25 lb.
Corned Beef| 40 – 75| 6 – 8 lb.
PRODUCT| TIMER SETTING (MINUTES)| WEIGHT PER PAN
---|---|---
Hot Dogs or Wieners| 3| 80 – 100 Count
Asparagus Spears Frozen Fresh| 10 – 12/5| 3 Doz./5 lb.
Beans Green, 2″ Cut. Frozen/Fresh Lima. Frozen Baby Lima. Frozen| 6/8/5| 5 lb./5 lb./5 lb.
Brussel Sprouts. Frozen| 6| 5 lb.
Broccoli Spears. Frozen Spears. Fresh Florets. Frozen| 8/6/6| 4 lb./5 lb./5 lb.
Cabbage, Fresh, 1/6 Cut| 8| 5 lb.
Carrots Baby Whole. Frozen Crinkle Cut, Frozen Sliced. Fresh| 8/7 – 8/11| 7 lb./4 lb./9 lb.
Cauliflower, Flowerettes Frozen Fresh| 6/7 – 8| 4 lb./5 lb.
Celery, 1″ Diagonal Cut| 7| 5 lb.
Corn Yellow Whole Kernel, Frozen Cobbett’s. Frozen Corn-On-Cob. Fresh| 5/8/16 – 18/10 – 12/-16 18| 5 lb./27 Ears/80 Ears/18 Ears/54 Ears
Peas. Green| 6| 5 lb.
Potatoes. Whole Russet| 55| 40 lb.
Spinach Chopped. Frozen Defrosted Fresh Cut| 17 /5/3| 6 lb./6 lb./2 lb.
Squash, Acorn Halves| 25| 10 Halves
Zucchini, Slices| 8| 10 lb.
Frozen Mixed Vegetables| 6 – 7| 5 lb.
Fruit, Blanch for Peeling, Grapefruit Oranges| 3|
Pineapple, Whole for Cutting| 4|

Cooking Hints
Where possible, spread the food out evenly in pans. Do not allow food to protrude above pans, since this will interfere with steam circulation between pans in the compartment.
Always preheat compartments for satisfactory results. When the time does not allow for defrosting of frozen vegetables, such as loose-pack peas, corn, diced carrots, etc., they may be cooked at once provided just half of the suggested portions in the cooking chart are used.

GCX-2 & GCX-10
Gas Fired Steamer

A product with the Crown name incorporates the best in durability and low maintenance. We all recognize, however, that replacement parts and occasional professional service may be necessary to extend the useful life of this appliance. When service is needed, contact a Crown Authorized Service Agency, or your dealer. To avoid confusion, always refer to the model number, serial number, and type of your appliance.

CROWN FOODSERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario,
Canada, M3N 1V9
Telephone : 919-762-1000
www.crownsteamgroup.com

References

• Crown Steam – Steam Cooking Solutions

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