Carter-Hoffmann HL10-36 - Manual (Page 10)

NORMAL OPERATION (CONT)
CAUTION:
HOT SURFACE
Inner surfaces of the unit
will be very hot during and
after operation.
Avoid touching the cabinet
when loading or removing
product.
Low temperature alarm
The cabinet is equipped with a low temperature alarm feature. When the alarm is
active, the temperature display will indicate “LO” and then “TEMP” and the audible
alarm will sound. To silence the alarm, press the “alarm off” button. If the actual
temperature is still below the low temperature alarm set point after 5 minutes, the
alarm will sound again.
This alarm can be triggered by the door being left open, product that is much cold-
er than the temperature set point being placed in the cabinet or due to a malfunc-
tion of the heating system.
To change the low temperature alarm set point, press and hold the “alarm off”
button while adjusting the temperature set point knob to the new desired value.
Due to food safety concerns, the low temperature alarm should never be set
below 140 degrees F (60
°C). After 3 seconds, the controller will accept the new
set point. The new value will be stored in the controller memory until the next time
the value is changed.
The audible alarm for low cabinet temperature can be turned off. The factory
default is ON. To enter into the adjustment mode, push in and hold the “alarm
off” button until the alarm sounds. The display will read either (ON or OFF). To
change the status, push the temperature knob, which will function as a toggle
switch to select between ON or OFF. After 10 seconds, the controller will accept
the desired audible alarm function (either ON or OFF). If OFF is selected, the
temperature display will still indicate “LO” and “TEMP” if the low temp alarm is
tripped.
Low Water Alarm
The cabinet is equipped with a low water alarm feature. When water drops below
the low level probe, the control cuts power to the heating element used to produce
steam. If the water level is below the low probe for more than 5 minutes, an audi-
ble alarm will sound and the humidity display will indicate “LO” and then “H2O”.
This alarm can be triggered by a lack of water supply or due to a malfunction of
the humidity system.
The humidity display will normally show the set point value. To display the actual
humidity value, press the knob located next to the humidity display. The actual
temperature and humidity values will be displayed for 5 seconds and then revert
back to the respective set point values. To display only the actual temperature or
humidity, push in the respective adjustment knob.
The audible alarm for low humidity can be turned off. The factory default is ON.
To enter into the adjustment mode, push in and hold the (alarm off) button until
the alarm sounds. The display will read either (ON or OFF). To change the sta-
tus, push the humidity knob, which will function as a toggle switch to select be-
tween ON or OFF. After 10 seconds, the controller will accept the desired audible
alarm function (either ON or OFF). If OFF is selected, the humidity display will still
indicate “LO” and “H2O” if the low water alarm is tripped.
Operating ranges:
-temperature: 90-200ºF (32-93ºC)
-temp alarm: 80-180ºF (27-82ºC)
-relative humidity: Off - 90%
The LO / H2O alarm can be
silenced by pressing the
alarm off button or by add-
ing water to the reservoir.
If the alarm off button is
pressed and no water is
added, the alarm will sound
again after 5 minutes.
CAUTION:
WATER HAZARD
A water trough is located at
the base of the door to col-
lect condensation. Make
sure to periodically check
and empty it regularly to
avoid overflow. The trough
can be removed and emp-
tied by simply sliding it off
the bolts at the base of the
door.
Factory default setpoints:
- temperature: 160ºF (71ºC)
- humidity: 50%
- low temp alarm: 140ºF (60ºC)
- high temp alarm: 240ºF (115ºC)
- temp alarm: ON
- humidity alarm: ON
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