Blodgett SC-7G Operation Manual
SN-5G, SC-7G and SC-10G
GAS FIRED CONVECTION STEAMER
INSTALLATION – OPERATION – MAINTENANCE
BLODGETT OVEN COMPANY
www.blodgett.com
44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone (800) 331-5842, (802) 860-3700 Fax: (802) 864-0183
S00041 Rev B (4/08)
1
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
WARNING: Improper installation, operation, adjustment, alteration,
service or maintenance can cause property damage, injury or death.
Read the installation, operating and maintenance instructions
thoroughly before installing, operating or servicing this equipment.
FOR YOUR SAFETY: Do not store or use gasoline or other
flammable vapours and liquids in the vicinity of this or any other
appliance.
PURCHASER: Instructions to be followed in the event that the
operator of this appliance smells gas must be posted in a prominent
location. This information shall be obtained by consulting the local
gas supplier.
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.
Do not attempt to operate this unit in the event of a power failure.
This manual should be retained for future reference.
2
TABLE OF CONTENTS
DESCRIPTION PAGE
1.0 Service Connections ...............................................................................................4
2.0 Installation ...............................................................................................................6
3.0 Performance Check ..............................................................................................11
4.0 Operation Instructions ............................................................................................12
5.0 Periodic Maintenance ...........................................................................................15
6.0 Deliming Procedure ...............................................................................................18
7.0 Troubleshooting ......................................................................................................19
3
1.0 SERVICE CONNECTIONS – SN-5G
Unless otherwise specified, Field Wire Electrical Connection to be 120 Volts, 60 Hertz single phase with grounding wire. Furnished with 6 foot cord
with 3 prong plug. Maximum amps 2.0.
DRAIN: 1"IPS piped to open floor drain. No Solid Connection. 24" length before open air gap opening. (No bends or elbows)
D
GAS CONNECTION: 3/4"IPS supply line required.
GENERATOR WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)
G
CONDENSING WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)
C
WATER QUALITY STATEMENT
Water quality is the major factor affecting the performance of your appliance. If you are unsure of water quality, consult a
local water treatment specialist and have the water analyzed. Your water supply must be within these general guidelines:
Water which fails to meet these standards should be treated by installation of water conditioner.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS NOT COVERED UNDER WARRANTY.
Total dissolved solids
Total alkalinity
Silica
Chlorine
pH Factor
Less than 60 PPM
Less than 20 PPM
Less than 13 PPM
Less than 1.5 PPM
7.0-8.5
MODEL
SN-5G
BTU/HR.
42,000
9 [229]
24 [610]
D
12.3
1.75 [44]
3 [76]
G
3.50 [89]
5.25 [133]
SAFETY RELIEF
VALVE
GAS SUPPLY
SUPPLY PIPE PRESSURE (W.C.)kW/HR.
Natural Propane
6.0-13.8"(150-350mm) 11.0-13.8"(280-350mm)
C
DIMENSIONS ARE IN INCHES [MM].
SAFETY RELIEF
VALVE
G
D
C
4 [102]
MIN.
4
16 [406]
SERVICE CONNECTIONS – SC-7G and SC-10G
Unless otherwise specified, Field Wire Electrical Connection to be 120 Volts, 60 Hertz single phase with grounding wire. Furnished with 6 foot cord
with 3 prong plug. Maximum amps 4.0.
DRAIN: 1"IPS piped to open floor drain. No Solid Connection. 24" length before open air gap opening. (No bends or elbows)
GAS CONNECTION: 3/4"IPS supply line required.
GENERATOR WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)
CONDENSING WATER: 3/8" O.D. tubing at 25-50 PSI(170-345 kPa)
WATER QUALITY STATEMENT
Water quality is the major factor affecting the performance of your appliance. If you are unsure of water quality, consult a
local water treatment specialist and have the water analyzed. Your water supply must be within these general guidelines:
Total dissolved solids
Total alkalinity
Silica
Chlorine
pH Factor 7.0-8.5
Water which fails to meet these standards should be treated by installation of water conditioner.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS NOT COVERED UNDER WARRANTY.
Less than 60 PPM
Less than 20 PPM
Less than 13 PPM
Less than 1.5 PPM
MODEL
SC-7G
DIMENSIONS ARE IN INCHES [MM]
84,000
84,000SC-10G 24.6 Natural - min. 6"(152mm) Propane - min. 11"(279mm)
kW/HR.
24.6
GAS SUPPLY
Natural - min. 6"(152mm) Propane - min. 11"(279mm)
12 [305]
SAFETY RELIEF
VALVE
G
G
C
C
S
S
G
G
C
C
S
S
1.75 [44]
SUPPLY PIPE PRESSURE (W.C.)BTU/HR.
24 [610]
9 [229]
G
G
C
C
S
S
REAR FLANGED FOOT DETAIL
2 EQUALLY SPACED
Ø
ON 2.5 [63] B.C.
2.75 [70] SC-7G
1.75 [44] SC-10G
4 [102] SC-7G
3 [76] SC-10G
3.50 [89]
6.25 [159] SC-7G
5.25 [133] SC-10G
7/16" [11mm] HOLES
5
2.0 INSTALLATION
GENERAL
NOTICE: If this equipment is being installed at over 2,000 feet altitude and was not so
specified on order, contact service department. Failure to install with proper orifice sizing
may void the warranty.
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.
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 psi
(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 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.
WARNING: Electrical grounding instructions - units equipped with a threeprong (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. (120 volt units only).
WIRING DIAGRAM FOR APPLIANCE IS LOCATED ON RIGHT HAND SIDE PANEL
OF THE COOKER CABINET.
2.1 EXHAUST FANS AND CANOPIES:
Canopies are set over ranges, ovens, kettles, etc., for ventilation purposes. It is
recommended that a canopy extend 6" past appliance and be located 6' 6" from the
floor. Filters should be installed at an angle of 45 degrees or more with the horizontal.
This position prevents dripping of grease and facilitates collecting the run-off grease in a
drip pan, usually installed with the filter. A strong exhaust fan tends to create a vacuum
in the room and may interfere with burner performance or may extinguish pilot flames.
Makeup air openings approximately equal to the fan area will relieve such vacuum. In
case of unsatisfactory performance on any appliance, check with the exhaust fan in the
“OFF” position.
6
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