Form No. CWBM-1120
11
English
OPERATION
Changing the Setpoint Temperature
Use the following procedure to change the setpoint temperature
on the digital temperature controller.
NOTE: Changes to the setpoint temperature should be made
in small increments (1 to 2 degrees). Wait at least two
hours after a change in setpoint temperature before
checking for the desired result.
1. Press and hold the
key for one second until the
display flashes the current setpoint temperature.
2. Press the
or
key to increase or decrease the
setpoint temperature. If no key is pressed within 60
seconds, the display will revert to normal operation and
the current temperature of the unit will be shown on the
display.
3. Press the
key to lock in the new setpoint temperature.
The display will revert to show the current temperature of
the unit.
Display
Down Arrow/
Defrost Key
Unit
“Active”
Symbol
Up Arrow/
Standby Key
SET
Key
Digital Temperature Controller
NOTE: If the display flashes “OFF” and then the current
temperature, press and hold the
key for three
seconds. The display will no longer flash “OFF”.
If the display flashes “df” and then the current
temperature, press and hold the
key for three
seconds. The display will no longer flash “df”.
Setting the Auto-Defrost Cycle
Hatco Refrigerated Wells are programmed at the factory with
the auto-defrost cycle deactivated. Use the following procedure
to activate the auto-defrost cycle if ambient or operational
conditions require the unit to defrost occasionally. When the
unit is in a defrost cycle,
will appear on the display.
1. Press and hold the
key for three seconds to access
programming mode. “PS” (password) will appear on the
display.
2. Press the
key again. A numeric value will appear on
the display.
3. Press the
or
key until the number “22” appears
on the display, then press the
key.
4. Use the
or
key to scroll through the programmable
parameters until “dI” (defrost interval) appears on the display.
5. Press the
key to select “dI”. The current number of
defrost cycles will be shown on the display. For new units,
this value will be “0”.
6. Press the
or
key within 60 seconds to scroll to
the desired number of hours between defrost cycles. See
below for examples of how the defrost cycle(s) operate:
“0” = auto-defrost is deactivated
“1” = unit will defrost every hour
“4” = unit will defrost every four hours
“12” = unit will defrost every twelve hours
If no key is pressed within 60 seconds, the display will
revert to normal operation and the current temperature of
the unit will be shown on the display.
7. Press the
key to lock in the new defrost cycle setting.
8. Press and hold the
key for three seconds to exit
programming mode. The display will revert to show the
current temperature of the unit.
Changing Fahrenheit and Celsius Setting
Use the following procedure to change between Fahrenheit
and Celsius on the display.
1. Press and hold the
key for three seconds to access
programming mode. “PS” (password) will appear on the
display.
2. Press the
key again. A numeric value will appear on
the display.
3. Press the
or
key until the number “22” appears
on the display, then press the
key.
4. Use the
or
key to scroll through the programmable
parameters until
appears on the display.
5. Press the
key to select
.
6. Press the
or
key within 60 seconds to scroll to
the desired setting. See below for the correct setting:
“0” = Displays Celsius
“1” = Displays Fahrenheit
If no key is pressed within 60 seconds, the display will
revert to normal operation and the current temperature of
the unit will be shown on the display.
7. Press the
key to lock in the new setting.
8. Press and hold the
key for three seconds to exit
programming mode. The display will revert to show the
current temperature of the unit.
