Middleby CROWN SX-5G3 User manual
MANUAL 10301 REV 0 (06/21)
$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 SX-10G3
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: 919-762-1000 www.crownsteamgroup.com
GAS FIRED STEAMER
SX-5G3, SX-7G3 & SX-10G3
Installation & Operation Manual
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 2 OF 20
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.
Adequate clearances must be maintained for servicing and proper operation.
Copyright © 2021 by Crown. 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:
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.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 3 OF 20
RETAIN THIS MANUAL FOR FUTURE REFERENCE.
Table of Contents
Important Notes For Installation and Operation.................................................................... 2
Service Connections............................................................................................................. 4
Installation Instructions ......................................................................................................... 7
Performance Check .............................................................................................................. 10
Operation .............................................................................................................................. 11
Cleaning................................................................................................................................ 13
Troubleshooting .................................................................................................................... 16
TC
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 4 OF 20
SERVICE CONNECTIONS
SERVICE CONNECTIONS
UTILITY AND SPECIFICATIONS
BTU/HR.
SX-7G3 625 lbs. [285 kg]
94,000 27.6 Natural
6” - 14” (152 - 356 mm)
Propane
11” - 14” (279 - 356 mm)
3”
[76 mm]
8”
[203 mm]
6”
[152 mm]
SX-10G3 675 lbs. [305 kg]
Terry System Cartridge Changes / Installation – “2-3 gallons of water MUST be purged at each cartridge change or new installation prior to
water supply being fed to the steamer. Failure to do so can result in component damage within the steamer which is not covered under warranty.
For additional guidance on proper installation, refer to install documentation provided with each Terry System and Replacement Cartridge Set.”
DISCLAIMER
WATER QUALITY STATEMENT
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
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.
wire electrical connection to be 120 V, 60 Hz., single phase with
grounding wire. Furnished with 6 foot cord with 3 prong plug.
(No bends or elbows)
– GAS CONNECTION: 3/4” IPS supply line required.
25-50 psi (170-345 kPa).
25-50 psi (170-345 kPa).
– DELIME PORT: 3/4” IPS
SERVICE CONNECTIONS
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 5 OF 20
SERVICE CONNECTIONS
UTILITY AND SPECIFICATIONS
Pan Depth
BTU/HR.
1” 2-1/2” 4” 6”
SX-5G3 250 lbs.
[113 kg]
47,000 13.8
Natural
6” - 14”
(152 - 356 mm)
Propane
11” - 14”
(279 - 356 mm)
10 5 3 2
3”
[76 mm]
8”
[203 mm]
6”
[152 mm]
Terry System Cartridge Changes / Installation – “2-3 gallons of water MUST be purged at each cartridge change or new installation prior to
water supply being fed to the steamer. Failure to do so can result in component damage within the steamer which is not covered under warranty.
For additional guidance on proper installation, refer to install documentation provided with each Terry System and Replacement Cartridge Set.”
DISCLAIMER
WATER QUALITY STATEMENT
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
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.
wire electrical connection to be 120 V, 60 Hz., single phase with
grounding wire. Furnished with 6 foot cord with 3 prong plug.
(No bends or elbows)
– GAS CONNECTION: 3/4” IPS supply line required. A gas
and adjacent to appliance.
25-50 psi (170-345 kPa).
25-50 psi (170-345 kPa).
– DELIME PORT: 3/4” IPS
SERVICE CONNECTIONS
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 6 OF 20
U
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.
Before installing, verify that the gas (natural or propane), the elevation from sea level and the electrical supply agree
INSTALLATION INSTRUCTIONS
I C S
Installation must conform 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.
during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (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, or the Canadian Electrical Code, CSA C22.2, as applicable.
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
NOTICE
WARNING
ELECTRICAL GROUNDING INSTRUCTIONS
Units equipped with a three-prong (grounding) plug for your protection against shock hazard and should
be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding
prong from this plug. (120V units only).
COOKER CABINET.
E F C
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 7 OF 20
INSTALLATION
Adequate clearance must be provided in aisle and at the side and back. Adequate clearances for air openings into the
from combustible and noncombustible construction, 3 inches on left side, 8 inches on right side and 6 inches from back.
1. Uncrate carefully. Report any hidden freight damage to the freight company immediately.
2. Set the unit in place. Be certain to maintain the minimum clearances from combustibles and non-combustibles.
5. Be certain to leave adequate clearances for cleaning, maintenance and service.
WARNING
WARNING
is required immediately below the appliance drain.
G C
1. The Serial and Rating Plate on the unit indicates the type of gas your unit is equipped to burn. DO NOT connect to
any other gas type.
2. A 3/4” NPT line is provided at rear for the connection. Each compartment is equipped with an internal pressure
on the burner manifold for checking pressure.
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the volume of gas required for
should not show any appreciable drop. Fluctuations of more than 25% on natural gas and 10% on propane gas will create
Purge the supply line to clean out any dust, dirt or other foreign matter before connecting the line to the unit. se pipe
compartment is supplied with the unit.
Test pipe connections thoroughly for gas leaks.
NOTICE
If applicable, the vent 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 or the Natural Gas
Installation Code CAN/CGA-B149.1 or the propane installation code, CAN/CGA-B149.2, as applicable.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 8 OF 20
WARNING
Do not connect the steamer to the electrical supply until after the gas connection has been made.
INSTALLATION
D C
(1830 mm) horizontal and piped to an open gap type drain. Drain pipe should be copper. DO NOT use PVC pipe – PVC
pipe may lose its rigidity or glue may fail.
CAUTION
To avoid injury or damage to the steamer, do not connect solidly to any drain connection.
Figure 1 Figure 2
The water supply connected to the steam generator should meet the following guidelines:
and dissolved gasses. A local water treatment specialist should be consulted before installing any steam generating
equipment.
Untreated water contains scale producing minerals which can precipitate onto the surfaces in the generator. Due to
the temperatures in the generator, the minerals can bake onto the surfaces and components. This can result in early
component failure and reduced product life.
E C
120 VAC-60 Hz - Single Phase
NEMA 5-15R 125 VAC, three-prong grounded receptacle. A separate 15 amp supply is needed for each unit.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 9 OF 20
INSTALLATION
WARNING
Plumbing connections must comply with applicable sanitary, safety and plumbing codes.
line pressure should be 25 - 50 psi (170-345 kPa) for each line. The water supply to the generator tank(s) separate from
the water supply to the cooling system where steam is condensed before entering the drain line.
Treated water feeding the boiler inlet supply is recommended, and untreated water feeding the condensing water inlet.
Inlets are labelled on the back of the steamer
The steamer is equipped with a cold water condenser in the rear of the cooking chamber which helps to condense the
steam prior to discharge into drain. The steamer freely vents itself by the negative pressure created by the condensate
water drainage. This negative pressure prevents steam leakage around the door gasket and helps draw the steam
through the cooking compartment. Steam leakage at the door may indicate a plugged or improperly installed drain.
It is important that the water supply connected to this steamer be softened to no more than 2.0 grains of hardness
and have a pH of 6 to 7.5. This degree of hardness can be easily obtained with the use of a properly maintained water
softener. The use of a water meter will determine the water consumption and when the water softener needs regeneration
or recharging. Failure to comply with these water condition standards may void the warranty.
Untreated water contains scale producing minerals which can precipitate onto the surfaces in the generator. Due to
the temperatures in the generator, the minerals can bake onto the surfaces and components. This can result in early
water level control is unable to maintain the proper water level in the generator.
STRAINERS and FILTERS will NOT remove minerals from the water.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 10 OF 20
Once the steamer is installed and all mechanical connections have been made, thoroughly test the steamer before
operation.
1. Check that proper water, drain and electrical and gas connections have been made.
water temperature is 205º Fahrenheit (97º Celsius).
3. Check that “Ignition” light comes on when the pilot burner is on.”
entering the compartment and that the “COOKING” light is OFF.
5. Close compartment door. The COOKING light should now be illuminated and steam should be heard entering the
compartment after about 45 seconds. “READY” light is OFF.
as “COOKING” light goes “OFF.”
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 11 OF 20
OPERATION
OPERATION
WARNING
The steamer and its parts are hot. Use care when operating, cleaning or servicing the steamer. The cooking
compartment contains live steam. Stay clear when opening door.
205º Fahrenheit (97º Celsius) just below water boiling point.
C
Ready Pilot Light
for the cooking cycle.
Cooking Pilot Light
Ignition Light
Timer - Set the cooking time (0 to 60 minutes) - steam cooking will begin when the door is closed.
The cooking cycle will be interrupted if the door is open during the cooking cycle; resume
cooking by closing the door.
MAIN POWER SWITCH
On
O - The generator will drain.
Delime - Closes the drain valve while CLR liquid is being poured into the generator during the
Delime procedure.
WARNING
In the event of main burner ignition failure, a 5 minute purge period must be observed prior to re-establishing
ignition source. If so equipped, some units will automatically re-attempt ignition.
WARNING
gas company or gas supplier for service.
1. Ensure power, gas and water supply is on.
2. Turn power switch “ON.”
4. Once water level has been reached, the ignition light should come on and remain on throughout the operation of the
appliance.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 12 OF 20
NOTICE
The cooking compartments are operated independently of each other. Each has its own gas and water
supply and generator tank.
OPERATION
1. Set timer to “OFF” position and leave door slightly open.
1. Set timer to “OFF” and turn power switch “OFF.” Generator will drain automatically.
2. Turn water supply “OFF.”
3. Turn gas supply “OFF.”
4. Disconnect power supply.
STEAM COOKING
controlled. Keep hot food holding time to a minimum to produce the most appetizing results. Prepare small batches, cook
only enough to start serving, then cook additional amounts to meet demand. Separate frozen foods into smaller pieces to
Use a pan cover for pre-cooked frozen dishes that cannot be cooked in the covered containers in which they are packed
is necessary.
Cooking time for frozen foods depends on amount of defrosting required. If time permits, allow frozen foods to partially
thaw overnight in a refrigerator. This will reduce their cooking time.
PREPARATION
Prepare vegetables, fruits, meats, seafood and poultry normally by cleaning, separating, cutting, removing stems, etc.
placed under a perforated pan. Perforated pans are used for frankfurters, wieners and similar items when juices do not
need to be preserved. Solid pans are good for cooking puddings, rice and hot breakfast cereals. Vegetables and fruits
are cooked in solid pans in their own juices. Meats and poultry are cooked in solid pans to preserve their own juices or to
be poured into solid pans.
PAN
on the following table.
DEPTH
OF PAN
NUMBER OF PANS
SX-5G3 SX-7G3 SX-10G3
Top
Compartment
Bottom
Compartment
Top
Compartment
Bottom
Compartment
1" 10 6 8 10 10
2-1/2” 5 3 4 5 5
4" 3 2 2 3 3
6" 2 1 2 2 2
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 13 OF 20
Cleaning
At the end of each day, or between cooking cycles if necessary:
1. Turn main power switch OFF.
2. Remove pans and racks from compartment and wash in sink.
wipe with a dry cloth.
and wipe with a dry cloth. Do not apply food oils or petroleum solvents or lubricants directly to door gasket or surfaces
which touch door gasket.
5. 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.
6. Leave door slightly open when steamer is not in use.
WARNING
Disconnect the unit from the power supply before cleaning or servicing appliance.
CAUTION
Never spray water into electric controls.
CAUTION
Do not use cleaning agents that are corrosive.
CAUTION
Live steam and accumulated hot water in the compartment may be released when the door is opened.
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.
Weekly, or more often if necessary:
2. Use a non-abrasive cleaner to remove discolorations.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 14 OF 20
CAUTION
Never spray water into electric controls.
CAUTION
Do not use cleaning agents that are corrosive.
Monthly:
Following daily and periodic maintenance procedures will enhance long-life for your equipment. Climatic conditions - salt
Use of cleaning agents that contain chloride, acids or salts which are corrosive may cause pitting and corrosion when
used over a period of time; this will reduce the life of the appliance.
Should pitting or corrosion occur, this is not covered by warranty.
Follow the recommended cleaning instructions. Use a mild detergent, warm water and rinse thoroughly.
To remove normal dirt, grease or product residue from stainless steel, use ordinary soap and water (with or without
detergent) applied with a sponge or cloth. Dry thoroughly with a clean cloth. Never use vinegar or any corrosive cleaner.
To remove grease and food splatters or condensed vapours that have baked on the equipment, apply cleanser to a damp
cloth or sponge and rub cleanser on the metal in the direction of the polishing lines on the metal. Rubbing cleanser as
NEVER RUB WITH A
CIRCULAR MOTION.
Soil and burnt deposits which do not respond to the above procedure can usually be removed by rubbing the surface
with SCOTCH-BRITETM scouring pads or STAINLESS scouring pads. DO NOT USE ORDINARY STEEL WOOL as any
NEVER USE A WIRE BRUSH, STEEL
SCOURING PAD (EXCEPT STAINLESS), SCRAPPER, FILE OR OTHER STEEL TOOLS. Surfaces which are marred
heat. These darkened areas are caused by thickening of the protective surface of the stainless steel and are not
harmful. Heat tint can normally be removed by the foregoing, but tint which does not respond to this procedure calls
for a vigorous scouring in the direction of the polish lines using SCOTCH-BRITETM scouring pads or a STAINLESS
scouring pad in combination with a powdered cleanser. Heat tint action may be lessened by not applying or by reducing
heat to equipment during slack periods.
It is recommended that your steamer be delimed once a month, or more often if necessary.
Should your steamer develop a heavy build-up of lime scale deposits, use the CLR TREATMENT KIT available from your
authorized servicer.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 15 OF 20
WARNING
Read and follow instructions on the CLR bottle. Use plastic or rubber gloves to avoid skin contact. If CLR comes
in contact with skin, rinse with clean water.
1. Drain steam generator by setting power switch to “OFF.” Set cooking timer to 0.
2. Turn power switch to DELIME. Keep the doors closed.
3. Unscrew brass deliming plug on right side of steamer. Insert hose in hole of port. Pour 20 ounces of solution into
generator slowly to avoid spillage. Remove hose. Screw deliming plug back so it seals tightly. Turn power switch to
on. (If there is no deliming plug on the side of the steamer, check with your local service agency for proper deliming
instructions of your unit.)
4. Allow steamer to remain in ready cycle for 1/2 hour, then turn power switch “OFF” and allow generator to drain.
LEAVE COMPARTMENT DOOR OPEN WHEN NOT IN USE.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 16 OF 20
T
WARNING
WARNING
contact your authorized service agency for reliable service, dependable advice or other assistance, and for
genuine factory parts.
All units are adjusted at the factory. In case of operation problems at initial installation, check type of gas and manifold
pressure and compare it with information on rating plate.
P L D N
1. Gas supply to unit is “OFF.”
3. Power switch is not turned “ON.”
4. Probe not sensing the water level, will not call for ignition.
5. Ignitor or ignition module not functioning.
B P C D
3. Incorrect pressure at supply.
4. Dirty primary air openings.
5. Not enough primary air.
Flows C
2. Scale build-up on operating probe inside generator.
These problems are an indication of severe harmful water conditions which should be corrected immediately to avoid
damage to the components and performance of the steamer.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 17 OF 20
D L
1. Check for damage to door gasket.
2. Clogged compartment drain or plumbing.
A C
1. Compartment drain clogged.
diaphragm or core tube of valve.
N B S
2. Supply water pressure too low.
4. Defective level control board.
5. Shortage of circuit between probes and body.
6. Check that drain solenoid is closed.
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 18 OF 20
N
INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21) PAGE 19 OF 20
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INSTALLATION & OPERATION MANUAL 10301 REV 0 (06/21)
PAGE 20 OF 20
SX-5G3, SX-7G3 & SX-10G3
Gas Fired Steamer
to the model number, serial number, and type of your appliance.
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: 919-762-1000 www.crownsteamgroup.com
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