Carter Hoffman FH90 Cleaning, Assembly And Operation Instructions Download Page 2

 

 
 
 
 
 

1. Before using, familiarize yourself with the heater controls. 
2. Plug the heater into a proven power source. The white indicator lamp 

and the fan will operate continuously whenever the heater is plugged in. 

3. Turn the thermostat to 140° F (60° C) on the knob. Be sure the 

cabinet door(s) are fully closed during the pre-heat time. 

4. Food serving temperature will vary with the mass, type and quantities of 

food served. Set the thermostat for the desired holding setting. Turn 

clockwise to increase the temperature and counter clockwise to decrease 
the temperature. 

NOTE:

 

This unit is designed for HOLDING 
hot foods. To insure best results, be 
sure your food dishes and covers are 
at or above the desired holding 
temperature and the cabinet is 
completely pre-heated. 

5. During loading, the cabinet temperature will drop. Try not to move the 
cart right away; wait 10-15 minutes until the cabinet recovers air 
temperature. 
6. Be sure to remove the plug from the outlet and wind the cord on the 
cord bracket or push handle before moving the cart. Move the cart to the 
service area as quickly as possible. 

 

7. Upon reaching the serving area, unwind the power cord and reconnect 

the heater as quickly as possible. Wait 5-10 minutes (check the 
thermometer to see if the temperature is at the desired level). If not, 
adjust the thermostat as required. 

8. When removing items, start at the bottom and work to the top posi-

tion. This keeps food hotter and eliminates spillage on lower items. 

A

 

 THERMOSTAT CALIBRATION

 (for P/N 18600-0015 only) 

If additional heat range is required in the heating unit, unplug unit, remove 
thermostat knob, insert small straight blade screwdriver into opening and 
turn limit control set screw

 counterclockwise

 (not clockwise) one full turn. 

Replace thermostat knob and turn clockwise to reach new maximum 
temperature. Repeat this until desired temperature is reached. Each 1/4 
turn of the calibration set screw will raise the element heating capacity by 
approximately 25°F-35°F. 

If a reduction of heat is desired, turn limit control set screw

 clockwise 

one 

full turn. Hold the door open allowing unit to cool until inside temperature 
is below the temperature desired. Close the door and allow unit to rise to 
new maximum temperature. Repeat this until desired temperature is 
reached. 

B

 

 THERMOMETER CALIBRATION

 

Place an oven thermometer in the center of the cabinet. Turn heater on; turn 
thermostat to maximum setting and wait approximately 45 minutes. Open the 
door and check inside thermometer temperature. If recalibration is required, 
pry the plastic cover off the dial body and with a small flat blade screwdriver 
insert into the pointer as shown. Carefully turn the pointer with your finger to 
the correct setting. Be careful not to bend the pointer, it is very fragile. 

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