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SERVICE MANUAL
GARLAND GAS
“PRODUCTION GRIDDLES”
MODELS: CG-24, CG-36,
CG-48, CG-60 & CG-72
PLEASE READ ALL SECTIONS OF THIS MANUAL
FOR YOUR SAFETY:
AND RETAIN FOR FUTURE REFERENCE .
DO NOT STORE OR USE GASOLINE
OR OTHER FLAMMABLE VAPORS OR
THIS PRODUCT HAS BEEN CERTIFIED AS
LIQUIDS IN THE VICINITY OF
COMMERCIAL COOKING EQUIPMENT AND
THIS OR ANY OTHER
MUST BE INSTALLED BY PROFESSIONAL
APPLIANCE
PERSONNEL AS SPECIFIED .
IN THE COMMONWEALTH OF MASSACHUSETTS
WARNING:
THIS PRODUCT MUST B
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IMPORTANT INFORMATION WARNING: This product contains chemicals known to the state of California to cause cancer and/or birth defects or other reproductive harm. Installation and servicing of this product could expose you to airborne particles of glass wool/ceramic fibers. Inhalation of airborne particles of glass wool/ceramic fibers is known to the state of California to cause cancer. Operation of this product could expose you to carbon monoxide if not adjusted properly. Inhalation of carbon
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TABLE OF CONTENTS IMPORTANT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 . . . . . . . . . . . . DIMENSIONS AND SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . . . . . . . . WHAT IS A CHAIN GRIDDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 . . . . . . . . . . . . How Does it work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 . . . . . . . . . . . . . . . . . . . . INSTALLATION . . .
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DIMENSIONS AND SPECIFICATIONS INSTALLATION NOTES SPECIFY GAS TYPE ELECTRICAL CHARACTERISTICS Combustible Wall Clearances Operating Pressure Specifications Sides: Back: Natural: Propane: 10 V, Single Phase, 60Hz, 1 amp 6" (15mm) 6" (15mm) 7" W .C . (17 .mbar) 11" W .C . ( .mbar) 6' (18 9mm) power supply cord provided . • Gas Input Ratings shown are for • IMPORTANT: Unit must be installations up to ,000 feet (610mm) • NOTE: No cord and plug on export units . installed on legs fo
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WHAT IS A CHAIN GRIDDLE Commercial chain restaurants impose strict food procedures Figure 1 -Front view of counter-top chain griddle on franchise owners and operators to guarantee the quality and consistency of the product . Beef burgers, hamburgers, Burner ON amber french fries, onion rings, fried chicken and tortillas for indicator light Air vents example, must meet rigid standards of quality involving the Securing Flame Pilot ON green fasteners viewport ingredients used, the recipes follow
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WHAT IS A CHAIN GRIDDLE continued During normal operation, the pilot flame is continually Figure 2 – Sequence of Operation monitored . The flame current signal must maintain 0 . 15 microamps minimum . Flame failure response time is 0 . 8 Spark Flame Power Ignition seconds maximum . If at any time the ignition module does o/p sensor not detect a pilot flame, it will repeat the ignition process by allowing a 50 second trial of ignition . Pilot valve Figure illustrates this sequence of operat
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INSTALLATION continued • Each thermostat controls one zone burner though a • To check the unit lighting, turn the main power switch of dual solenoid-pressure regulator valve complete with a the unit to the ON position . The green light of the power pressure test spigot . Check the manifold gas pressure on switch and the green indictor of the gas pilot of each each combination valve to make sure it is the same as section of the griddle should illuminate . that shown on the serial plate . The g
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INSTALLATION continued . Re-set the thermostat to 75°F and apply a second film of NOTE : We recommend reseasoning the griddle before each oil . After (5) five minutes, wipe off the excess oil . day’s operations begin . Franchise operators who follow explicit operating procedures should be made aware of this 5 . Reset the thermostat to the cooking temperature and recommendation . apply a final film of oil . After (3) minutes, wipe off the excess oil . The griddle is now seasoned and rea
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SERVICING Many factors affect the serviceability of equipment . In the 1 . To remove the upper front and lower front panels, refer to chain griddle, there are more components to service than in the installation procedure given earlier . older models . The new griddle is a compact design . Access . To reduce the volume of gas feed to the pilot, turn the to the temperature control circuitry and ignition units is small screw in the pilot adjusting valve clockwise . easy . Service technique
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SERVICING continued If a thermocouple open circuits, the thermostat will shut off Thermostat and prevent the gas valve from opening, which means the Make sure the thermostat knob is correctly aligned with burner will not function . the dial indicator . To align the knob with the graduated dial If a unit short circuits somewhere behind the junction, it correctly, follow this procedure . creates a new junction and because the circuit cannot detect 1 . Turn the knob and shaft fully counter-cl
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SERVICING continued Figure 3 – Replacing a thermocouple Griddle plate Adjust to about 4.5" About 1" before before compression installing Bayonet adapter Probe heat shield assembly 7 . The bayonet connector is spring loaded . Turn the • If PL1 doesn’t illuminate when SW1 is closed, replace it . connector so that it makes good contact with its seat on • Failure of the amber lights (PL3, PL , etc . ) monitoring the the plate, and adjust the spring so that at least 1” ( 5mm) zones cycle with th
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SERVICING continued Gas Valve Regulator Power Switches The gas valve regulator (See fig ) used on the griddle is Dust caps fitted on the main power switch and zone AGA and CGA approved . The direction of gas flow is at switches protect them from dust and the corrosive effect of right angles, right and left viewing the inlet . For setting the cooking fumes . If the dust caps are removed, or not replaced regulator: following servicing, the switches will deteriorate and have reduced life expe
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CONTROL PANEL SCHEMATIC DIAGRAM Figure 4 – Control schematic for a Model CG-48 Chain Griddle Part #GCGTRAINING06 (03/03/08) Page 13
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SERVICE BULLETIN #95-5 FROM – National Service Department BULLETIN NO . #95-5 TO – National Service Binder Holders DATE – February , 1995 Subject: Subject: Thermocouples used in the Chain Griddle Models CG-36, CG-48, CG-60 & CG-72 This bulletin supplements the chain Griddle Service Manual with a description of the basics of thermocouple theory and how to use the degree/millivolt tables issued as part of this bulletin . This bulletin deals with the thermocouple only and how it registers te
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SERVICE BULLETIN #95-5 continued Tables of millivolt values for degrees Fahrenheit (at reference junction temperature 3˚) and Centigrade (at reference junction temperature 0˚) have been written and extracts from these tables form part of this bulletin . These are required if service technicians need to check a thermocouple without a J calibrated temperature meter . Check the thermocouple if you find the temperature variation of the thermostat is more than ± 5˚F from the set point . To check
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SERVICE BULLETIN #95-5 continued Type J - Thermocouples (0° to 440°F) EMF In Millivolts - Reference Junction 0°F °F 0 1 2 3 4 5 6 7 8 9 10 0 -0 .885 -0 .868 -0 .831 -0 .803 -0 .776 -0 .78 -0 .71 -0 .69 -0 .666 -0 .639 -0 .611 10 -0 .611 -0 .583 -0 .556 -0 .58 -0 .501 -0 .73 -0 .5 -0 .18 -0 .390 -0 .36 -0 .33 0 -0 .33 -0 .307 -0 .79 -0 .51 -0 .3 -0 .195 -0 .168 -0 .10 -0 .11 -0 .08 -0 .058 30 -0 .058 -0 .08 0 .000 0 .08 0 .056 0 .08 0 .11 0 .10 0 .168 0 .196 0 . 0 0
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SERVICE BULLETIN #95-5 continued Type J - Thermocouples (0° to 240°C) EMF In Millivolts - Reference Junction 0°C °C 0 1 3 5 6 7 8 9 10 0 0 .000 0 .050 0 .101 0 .151 0 .0 0 .53 0 .303 0 .35 0 .05 0 .56 0 .507 10 0 .507 0 .550 0 .609 0 .660 0 .711 0 .76 0 .813 0 .865 0 .916 0 .967 1 .019 0 1 .019 1 .070 1 .11 1 .17 1 .115 1 .77 1 .39 1 .381 1 .3 1 .8 1 .536 30 1 .536 1 .588 1 .60 1 .693 1 .75 1 .797 1 .89 1 .901 1 .95 .006 .058 0 .058 .111 .163 .16 .60
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Page 18 Part #GCGTRAINING06 (03/03/08))
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Part #GCGTRAINING06 (03/03/08) Page 19
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