MANUAL 10056-SB REV 0 (03/21)
$21.00
GAS FIRED STEAMER
MANUAL SECTION CO
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #:
___________________________
Serial #:
___________________________
Date Purchased:
_____________________
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.
Model GCX-10S
Gas Fired Steamer
GCX-2S & GCX-10S
Installation & Operation Manual
SOUTHBEND STEAM
A Middleby Company
1100 Old Honeycutt Road Fuquay-Varina, North Carolina 27526 USA
www.southbendnc.com
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Gas Fired Steamer
INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
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.
CAUTION
WARNING
NOTICE
This symbol warns of immediate hazards that will result in severe injury or death.
This symbol refers to a potential hazard or unsafe practice that could result in injury or death.
This symbol refers to a potential hazard or unsafe practice that could result in injury, product
damage, or property damage.
This symbol refers to information that needs special attention or must be fully
understood, even though not dangerous.
DANGER
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.
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 ow of combustion and ventilation air.
Adequate clearances must be maintained for servicing and proper operation.
Copyright © 2021 by Southbend Steam. All rights reserved. Published in the United States of America.
SPECIFICATIONS
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
FOR YOUR SAFETY:
Do not store or use gasoline or other ammable vapors or liquids in the vicinity of this or any other appliance.
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.
NOTICE
This product is intended for commercial use only. NOT FOR HOUSEHOLD USE.
NOTICE
Do not attempt to operate this unit in the event of a power failure.
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Gas Fired Steamer
INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
RETAIN THIS MANUAL FOR FUTURE REFERENCE.
Table of Contents
Important Notes For Installation and Operation .................................................................... 2
Service Connections ............................................................................................................. 4
Introduction ........................................................................................................................... 5
Installation Instructions ......................................................................................................... 6
Operation .............................................................................................................................. 9
Operation Instructions for Boilers with CSD-1 Controls ................................................... 10
Operation Instructions, Cooker Section............................................................................. 12
Periodic Maintenance ........................................................................................................... 13
Cleaning ................................................................................................................................ 14
Adjustments .......................................................................................................................... 15
Troubleshooting .................................................................................................................... 17
Cooking Chart ....................................................................................................................... 19
Table of Contents
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
SERVICE CONNECTIONS
SERVICE CONNECTIONS
GAS SUPPLY AND SPECIFICATIONS
WATER QUALITY STATEMENT
Water is the essential ingredient in steam equipment, water quality is the major factor aecting the performance of your appliance. Southbend Steam Group
oers 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 Southbend Steam Group steamers must be within these guidelines.
Total dissolved solids..............Less than 60 PPM Chlorine ..................Less than 1.5 PPM
Total alkalinity .......................Less than 20 PPM pH Factor ..............6.8 - 7.3
Silica ......................................Less than 13 PPM
Water which 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.
READY COOKING
COOKINGREADY
24 [610]
14.75 [375]
12.5 [318]
8.75 [222]
55.5 [1410] GCX-2-[24,36]
68.5 [1740] GCX-10-[24,36]
5.75 [146]
25 [635]
4.75 [121] (36” CABINET)
2.75 [70] (24” CABINET)
4.75 [121] (24” CABINET)
6.75 [171] (36” CABINET)
G
3.5 [89]
5.75 [146]
6.75 [159]
(36” CABINET)
8[203]
2.5[64]
SERVICE CONNECTIONS
– ELECTRICAL CONNECTION: 1/2” (13 mm) conduit connection to controls.
120 VAC-60Hz-1PH. 2 Amps per compartment or as specied on 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 oor 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.
Model
Gas supply
available
Cabinet Width
Water ColuMn pressure btu/hr kW/hr 24” 36”
GCX-2S-[24,36]
GCX-10S-[24,36]
Natural
7” - 14”
(178 mm - 355 mm)
Propane
11” - 14”
(279 mm - 355 mm)
200,000 58.6 Yes Yes
250,000 73.3 No Yes
300,000 87.9 No Yes
Model
CoMpartMent Pan CapaCity
shippinG
W
eiGht
(24” Cabinet)
s
hippinG
W
eiGht
(36” Cabinet)
M
iniMuM
ClearanCe
pan depth
1” 2-1/2” 4” 6”
GCX-2S-[24,36] 6 3 2 1
630 lbs.
[286 kg]
764 lbs.
[347 kg]
SIDES
BACK
3” [76]
6” [152]
GCX-10S-[24,36] 10 5 3 2
670 lbs.
[304 kg]
840 lbs.
[381 kg]
MISCELLANEOUS
If installing on any oor with an epoxy coating or other combustible oor 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.
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Gas Fired Steamer
INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
Description
Models GCX-2S and GCX-10S, convection steamers mounted on cabinet base and a gas red boiler rated at 200,000,
250,000 or 300,000 BTU. GCX-2S steamer has a pan capacity of 6 (2½”) pans, GCX-10S cooker has a pan capacity of
10 (2½”) pans.
Basic Function
Gas Fired Steamers
The sequence of operation is as follows:
1. Turn on main power switch. Pilot light will indicate main power is on and ll solenoid will open and water will begin to
ll boiler. Allow 20 minutes to ll boiler. OFF shuts o 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 o 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 o and the READY light will come on. Buzzer must be shut o by turning the timer to
its o position.
GENERAL
The gas boiler 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 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.
INTRODUCTION
INtroduction
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
INSTALLATION
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 specication on the data plate. NOTE: If this appliance is being installed above 2000 feet altitude, contact your
authorized service oce to assure that the proper orice size for your elevation has been installed.
INSTALLATION INSTRUCTIONS
Location
The installation location must be kept free and clear of combustibles. Do not obstruct the ow 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 oor. Provide adequate clearances for cleaning,
maintenance, service and proper operation.
Sucient 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 ow into and around the appliance. Do not obstruct the
ow of ue gases from the ue duct located at the rear and above the cabinet. Position the appliance in its nal location.
Check that there are sucient 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.
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 oor through the anchoring holes provided in the rear anged adjustable feet.
4. Remove appliance from installation position and drill holes in locations marked on the oor. 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 oor.
8. Seal bolts and anged feet with silastic or equivalent compound.
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INSTALLATION
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 o 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 o 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.
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 oor. 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-o grease in a drip
pan, usually installed with the lter. A strong exhaust fan tends to create a vacuum in the room and may interfere with
burner performance or may extinguish pilot ames. 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.
Connections
Plumbing Connections
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-o 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.
Drain Connection
The steamer drain (2” IPS) should be piped to a oor drain near the steamer (NOT directly under the steamer). There
should be no solid drain connection; an “open gap” between the steamer and the oor drain is required.
NOTICE
If this equipment is being installed at over 2,000 feet altitude and was not so specied on order, contact service
department. Failure to install with proper orice sizing may void the warranty.
WARNING
Plumbing connections must comply with applicable sanitary, safety, and plumbing codes.
IMPORTANT
If your equipment was supplied with split water lines and a lter, connect the lter system to the connection
marked “BOILER FEED” only. Make a second connection to the “CONDENSER FEED” from a cold and
unltered water supply.
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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 ow 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.
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 aect 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.
Codes require that a gas shut-o 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.
Electrical Connections
120 VAC-60 Hz - Single Phase
Make electrical connection to terminal block in rear of unit. A separate 15 amp supply is needed for each unit.
Refer to the electrical diagram located inside cabinet on door.
CAUTION
The pipe thread compound used when installing pipes must be a type that is resistant to the action of liquied
petroleum or propane gases.
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.
NOTICE
If applicable, the vent line from the gas appliance pressure regulator shall be installed to the 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
Electrical and grounding connections must comply with the applicable portions of the National Electrical
Code and/or other local codes.
INSTALLATION
NOTICE
If this equipment is being installed at over 2,000 feet altitude and was not so specied on order, contact service
department. Failure to install with proper orice sizing may void the warranty.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
OPERATION
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 qualied 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 this section for Operation Instructions for CSD-1 Equipped Boilers.
Boiler Controls (Inside Cabinet)
Main Power Switch - ON lls the boiler tank and turns the boiler controls on. You should allow 20 minutes to ll
the tank and generate steam.
- OFF shuts o 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.
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 Water
Quality Statement).
Water Level Control - While ON, briey open the water level control daily to remove any sediment that might
accumulate.
Safety Valve - This valve will release (pop o) 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.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
OPERATION
1. START-UP - BOILER OPERATION WITH STANDING PILOT IGNITION
Open manual gas shut o 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 burner located on centre main burner of boiler. Maintain dial
in depressed position for about 30 seconds and release. Observe that the pilot burner ame stays on. If at any time the
ame should become extinguished, a 5 minute period of complete shut o 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.
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 three minutes. Observe water gauge sight glass to verify.
Operation Instructions for Boilers with CSD-1 Controls
INITIAL START-UP PROCEDURE
1. Open the manual gas shut-o 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 ame stays ON. Turn dial to “ON”.
If at any time the ame should become extinguished, a ve (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 o and the boiler will begin operation.
Daily Startup Procedure
1. Close the manual blowdown valve, if so equipped.
2. Examine that the pilot burner ame is burning. If the pilot burner is out, a ve (5) minute period of complete gas supply
shut o 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 o and the boiler will
begin operation.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
Daily Shutdown Procedure
1. Turn “OFF” the power switch. Observe that the burners go o.
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 o all supplies of power, gas and water to the appliance.
Normal Boiler Operating Cycle
Water Fill Cycle
On the initial lling 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 ll solenoid valve, stopping the ow
of water to the boiler. As the water is consumed in the production of steam, the level control will close the circuit to the ll
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.
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 o 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.
OPERATION
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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 rst 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 o and ready pilot light will come on.
Buzzer must be shut o by turning the timer to its o 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 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 o. Details are on boiler instruction plate or previous section of
this manual.
OPERATION
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.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
PERIODIC MAINTENANCE
PERIODIC MAINTENANCE
WARNING
Disconnect the unit from the power supply before cleaning or servicing appliance.
IMPORTANT INSTRUCTIONS
Be sure to ush 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 oat chamber, sand, scale and other sediment may be deposited in the oat chamber. While the chamber has been
designed with a large accumulation bowl, it is necessary to ush the sediment from the chamber by blowing down the
control so that the accumulation of sediment does not interfere with the movement of the oat in the control.
Control must be ushed at least once a day.
CAUTION
Protect yourself. When ushing control, hot water and steam will ow out of the drain.
When ushing control, note water level in gauge glass, allow the boiler to ll if necessary, and also to come up to
temperature.
Before ushing control, note that water level in gauge glass is within operating range and the boiler pressure is at least
6 psi. While the boiler is being red, open 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-o operation. Float should drop shutting burners o, hot water and
steam will ow out the drain ushing away sediment.
CAUTION
If burner does not shut o during blowdown, immediately discontinue use of appliance and call for service.
Continue draining water for about fteen (15) seconds, from control until water is clean. Manually close valve. Recheck gauge
glass. If water level has dropped signicantly, wait for the boiler to restore water level and pressure and repeat if necessary.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
Cleaning
Cleaning
CAUTION
Do not use cleaning agents that are corrosive.
1. Keep exposed cleanable areas of 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 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 orice if lint has accumulated.
6. Visually assure carry over ports are unobstructed.
7. Rinse entire unit and dry. DO NOT GET WATER in electrical box or any electrical component.
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
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 boiler empty, close manual blowdown valve. If appliance is equipped with automatic blowdown, turn water supply
OFF to appliance. Turn power switch ON. This will energize and close blowdown valve.
2. Remove 3/4” pipe plug from tting on left front of boiler.
3. Insert appropriate hose or tube through tting 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, descaling solution must be introduced through hand hole.
4. Replace 3/4” pipe plug securely.
5. Open water supply to appliance allowing water to ll boiler to required level.
6. Let appliance cycle, allow two hours for descaling and cleaning. DO NOT TURN STEAM ON TO THE
COMPARTMENTS.
7. Open both the blowdown and low water level control valves for complete drainage and then close both valves.
Appliance equipped with automatic blowdown - turn OFF power switch and open low water control valve. This will
allow complete drainage. Once drained close water level control valve.
8. Turn appliance switch ON. When boiler is completely lled, turn power switch OFF. This will rinse and drain boiler.
Appliance with manual blowdown valve must be opened to drain.
9. Complete Step 8 twice to assure boiler is completely rinsed.
10. Appliance is now ready for use.
Adjustments
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Calibrate Pressure Switches
NOTICE
Pressure switches are factory set. Calibration is only required if pressure switches are replaced or if adjustment
is required.
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.
- Turning screw clockwise to increase, counterclockwise to decrease pressure.
- Use relief valve to release pressure from boiler for setting adjustments.
1. HIGH LIMIT PRESSURE SWITCHES
Allow pressure to build until unit shuts o. 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 boiler to below 9 psi. Burner will come on. Once pressure has reached 11 psi, burners will shut
o. Repeat this process several times to make sure burners come on at 9 psi and shut o at 11 psi.
Once completed, pressure switches have been calibrated.
Should your unit not have the High Limit pressure switch, start procedure at Override pressure switch.
Service
Contact your local authorized service oce for any repairs or adjustments needed on this equipment.
NOTICE
Contact the factory, the factory representative or local service company to perform maintenance and repairs.
Adjustments
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INSTALLATION & OPERATION MANUAL 10056-SB REV 0 (03/21)
TROUBLESHOOTING
Troubleshooting
Door Leaks
1. Check for damage to door gasket.
2. Compartment drain opening or associated piping may be blocked.
Water Accumulates in the Compartment
1. Compartment drain screen clogged. Remove and clean thoroughly and replace.
Water Not Being Supplied to Boiler
1. Water supply is “OFF”.
2. Defective water ll solenoid valve.
3. Water level control clogged or defective, unable to operate ll valve.
4. Check drain valve is closed. Also check that 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 scalant clogging drain lines and valve.
Boiler Achieves Pressure Slower than Normal
1. Heavy build up of lime or scalant hampering heat transfer. Call for service to inspect interior of boiler. Should a
considerable amount of scalant be found, have steam lines, water level control and valve also inspected.
Safety Valve Blows
1. Defective safety valve.
2. Pressure too high. Pressure switch requires adjustment (lower) or may be defective.
Burners Produce Carbon Deposits
1. Wrong size orices.
2. Burner air not adjusted properly.
3. Wrong gas supply.
4. Incorrect pressure at supply.
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Burners Do Not Come On
1. Gas supply to unit is “OFF”.
2. Manual shut o valve is “OFF”.
3. Pilot is out.
4. Power supply is “OFF”.
5. Water level has not been reached. Check water supply and water level control.
6. Pilot may require ame adjustment on option electronic ignition units.
7. If water at proper level, check relay which energizes pressure switch and gas valve.
8. Pressure switch may need to be replaced if relay is operating.
9. Check gas control. If energized but not operating, have replaced.
Pilot Light Does Not Ignite (electronic ignition)
1. Gas control knob is in “OFF” position.
2. Loose or dirty wire connection to 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. Unit is 100% lock out. Turn o and try in ve minutes.
6. Dirty ame sensor. Clean with emery cloth.
7. Pilot burner/ignitor sensor, cracked ceramic insulator. Have replaced.
8. Check for too much draft in room.
TROUBLESHOOTING
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PRODUCT TIMER SETTING (MINUTES) WEIGHT PER PAN
Eggs, Scrambled 10 - 12 8 Dozen
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.
Cooking Chart
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
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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.
Cauliower, Flowerettes
Frozen
Fresh
6
7 - 8
4 lb.
5 lb.
Celery, 1” Diagonal Cut 7 5 lb.
Corn
Yellow Whole Kernel, Frozen
Cobbettes, 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 Chart
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Cooking Hints
Where possible, spread 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 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.
Cooking Chart
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Notes
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Notes
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GCX-2S & GCX-10S
Gas Fired Steamer
A product with the Southbend Steam 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 Southbend Steam Authorized Service Agency, or your dealer. To avoid
confusion, always refer to the model number, serial number, and type of your appliance.
SOUTHBEND STEAM
A Middleby Company
1100 Old Honeycutt Road Fuquay-Varina, North Carolina 27526 USA
www.southbendnc.com
