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ROAST AND HOLD OPERATION

Roast and Hold cooks the product in two stages.  During First Stage Cooking, the oven temperature is regulated
by the Roast thermostat for the amount of time set on the Timer.  After the lapsed time counts down to 00:00,
Second Stage Cooking begins.  During Second Stage Cooking, the burners are off as the temperature in the oven
declines to the Hold Temperature.  The doors should remain closed during Second Stage Cooking.

When the Hold temperature is reached, cooking is done.  The Time Display counts up the Hold time and flashes
"Hold."  Temperature in the oven will be maintained at the Hold temperature until the oven is turned off.

400ºF

300ºF

200ºF

100ºF

ROAST AND HOLD DIAGRAM - Time vs. Temperature

SHORT BEEP.
TIMER DISPLAY FLASHES 00:00.
ROAST THERMOSTAT OFF.
BURNERS OFF UNTIL HOLD
TEMPERATURE IS REACHED.

LONG BEEP (20 SEC.)
BURNERS MAINTAIN
HOLD TEMPERATURE.
TIMER DISPLAY COUNTS UP
HOLD TIME AND FLASHES
"HOLD."

OVEN TEMPERATURE
TIMER DISPLAY COUNTS DOWN,
COLON FLASHES.

COOKING FROM
STORED HEAT

LOAD PRODUCT
INTO OVEN

PRODUCT TEMPERATURE

TEMP.

TIME

PREHEAT

FIRST STAGE COOKING

SECOND STAGE 
    COOKING

(DO NOT OPEN
       DOORS)

HOLDING

PL-51607

Summary of Contents for GCO4C ML-52357

Page 1: ...BOX 696 LOUISVILLE KY 40201 0696 TEL 502 778 2791 FORM 30903 Rev B 2 98 INSTALLATION OPERATION MANUAL GCO SERIES GAS CONVECTION OVENS MODEL GCO4S ML 52425 GCO4D ML 52354 GCO4C ML 52357 GCO6D ML 11472...

Page 2: ...N THE EVENT A GAS ODOR IS DETECTED SHUT DOWN UNITS AT MAIN SHUTOFF VALVE AND CONTACT THE LOCAL GAS COMPANY OR GAS SUPPLIER FOR SERVICE FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE V...

Page 3: ...Air Shutter Adjustments 9 Flue Connections 9 OPERATION 10 Controls Models GCO4S and GCO4D GCO6D 10 Lighting the GCO4S and GCO4D GCO6D Ovens 11 Before First Use 11 Using the GCO4S and GCO4D GCO6D Oven...

Page 4: ...lectrical service The oven doors open independently Model GCO4 is a single cavity oven It is furnished with five racks An open stand with lower storage rack is available as an option Model GCO44 consi...

Page 5: ...e is an adequate supply of air in the room to allow for that required for combustion of gas at the oven burners INSTALLATION CODES AND STANDARDS Vulcan ovens must be installed in accordance with In th...

Page 6: ...gas pipe connection protrudes beyond the back provide for this when oven is tipped back by resting it on suitable spacers 2 x 4 s etc Attach each of the four leg assemblies to bottom of oven with the...

Page 7: ...Move the oven with legs to the installed position and place upper oven on top of lower oven using the locating studs Insert the right angle short flue extension into the top oven Install the long flu...

Page 8: ...UST BE PROPERLY GROUNDED IF THE RECEPTACLE IS NOT THE PROPER GROUNDING TYPE CONTACT AN ELECTRICIAN The Model GCO Series Gas Convection Ovens are equipped with a 120 volt 60 Hz 1 phase cord and plug A...

Page 9: ...d is factory set to supply 3 5 W C 0 8 kPa as required for natural gas Propane Gas The burner orifices are sized to deliver the nameplate input rating 40 000 BTU hr at a gas manifold pressure of 10 W...

Page 10: ...L 51605 ON HEAT IGNITION TIMER ON OFF GAS VALVE ON MASTER SWITCH OFF GAS VALVE THERMOSTAT TURN GAS VALVE ON PUSH MASTER SWITCH TO ON POSTION IF OVEN FAILS TO LIGHT PUSH MASTER SWITCH TO OFF TURN GAS V...

Page 11: ...all a qualified servicer BEFORE FIRST USE Before using the oven for the first time it must be burned in to release any odors that might result from heating the new surfaces in the chamber 1 Using a cl...

Page 12: ...while the light in the Roast Button is lit Will be overridden to display actual cavity temperature for 8 seconds when Thermometer Button is pushed 1 The light in the Thermometer Button will be lit whi...

Page 13: ...e settings will be for the roast temperature except for the time that the light in the Thermometer Button is lit 2 Rotating the Thermostat Knob will change the roast set temperature 3 Cook time can be...

Page 14: ...t in the Roast Button is lit Time Display While Timing Product 1 Displays the counted down cook time if the Roast Button light is lit and in the Roast mode 2 Displays the counted up hold time if the H...

Page 15: ...ght in the Gentle Bake Button will be lit when in the gentle bake mode In Gentle Bake Mode 1 The fan cycles 45 seconds ON and 45 seconds OFF for the duration of the gentle bake cycle time 2 The fan st...

Page 16: ...hermostat to its maximum setting The Heat light should come on If Heat light is not on make sure door is closed 3 If the oven fails to light push On Off Oven Cool switch to the OFF position Wait 5 min...

Page 17: ...of Second Stage Cooking oven temperature will begin to decline to the Hold temperature and a long beep 20 seconds at the end of the cooking cycle See ROAST AND HOLD OPERATION 5 When product is done o...

Page 18: ...reached cooking is done The Time Display counts up the Hold time and flashes Hold Temperature in the oven will be maintained at the Hold temperature until the oven is turned off 400 F 300 F 200 F 100...

Page 19: ...e consistent repeatable results The convection oven is faster than conventional deck type ovens temperature settings are lower and cook times are shorter Since recipes and foods are subject to many va...

Page 20: ...26 163 12 5 Low Yellow Cake 300 149 25 5 Low Angel Food Cake 275 135 25 5 Low Brownies 350 177 15 20 5 Low Apple Turnovers 350 177 20 25 5 Low Cream Puffs 300 149 25 30 5 Low Apple Pie Fresh 350 177 3...

Page 21: ...articular recipe and product load For example if the user typically bakes four 18 x 26 45 7cm x 66cm sheet cakes using 5 lb 2 26 kg of batter for each cake that would constitute a typical product load...

Page 22: ...allation position Annually check the flue when cool to be sure it is free of obstructions REPLACING LAMPS Allow oven to cool Remove all racks by pulling forward lifting up and out Remove the right rac...

Page 23: ...GCO6D or E 05 appears in the display after three trials Model GCO4C GCO6C Turn oven off for 5 minutes before attempting to relight Check gas supply valves to be sure they are open Check electrical pow...

Page 24: ...24 FORM 30903 Rev B 2 98 PRINTED IN U S A NOTES...

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