Carter-Hoffmann RTB282 - Manual (Page 4)

4
1. The power switch is located at in the front of the heating module at the top of
the cabinet. Turn the power switch on. Preheat cabinet for 30 minutes. When
the cabinet is turned on, the air heater will operate until the cabinet reaches
the air temperature setpoint. The display will read the actual cabinet
temperature. The heat “ON” light will illuminate when the cabinet air
temperature is below the air temperature setpoint. The controller display will
flash alternately LO and the actual cabinet air temperature until it reaches the
low temperature alarm temperature setpoint. See programming instructions
below.
2. After preheat, roll dolly into cabinet. Lock caster brakes. Lift out dolly handle
and close cabinet door(s).
3. Place handle back into dolly
4. When cabinet is not in use, turn power off.
To View or Change the Temperature Setpoints:
Turn the power on. To view the temperature setpoint, press and hold the temperature set button. To
change the temperature setpoints, press and hold the temperature set button, press the up or down
arrow button until the desired air temperature is displayed. The display will advance in 1
o increments.
To View or Change Alarm Setpoints:
Turn the power on. To view the alarm setpoint, press and hold the alarm reset button. To change the
alarm setpoint, press and hold the alarm reset button, press the up or down arrow button until the
desired alarm temperature is displayed. The display will advance in 1
o increments.
To View or Change Temperature Scale:
The cabinet is programmable for a temperature scale in degrees Fahrenheit and Centigrade (Celsius). Turn power
off. Hold down both arrow buttons. Turn power back on while holding both arrows. Display will show current scale
(C or F). If desired, push the up or down arrow to change the scale. Turn power off to save change.
CONTROLLER
Operation
Heat “ON”
Indicator
Programming
Instructions