21
8.8.
Remote control: activate – deactivate
(Interface OFF)
(Interface On)
The recirculating cooler is to be prepared for remote control by a
personal computer via the serial interface RS232.
Set the interface item from >IOFF< to >ION<.
Remote control: activate – deactivate:
•
Switch off recirculating cooler by pressing the mains switch and
wait approx. 5 seconds.
•
Keep depressed the keys
and enter
simultaneously and
turn on the unit with the mains power switch.
>I OFF<
No remote control via RS232 (Factory setting)
>I On<
Remote control via RS232
L
The software version and the type of unit is indicated
(see example on the left).
The display "
rOFF
" indicates the unit is ready to be operated via
remote control.
9. Safety
installations
9.1. Excess
temperature protection
+
8
This safety installation is independent of the control circuit.
When the temperature of the bath fluid has reached the safety temperature (85
°C), a complete shutdown of the compressor and pump is effected.
The alarm is indicated by optical and audible signals (continuous tone) and on
the LED-DISPLAY appears the error message "
E
rror
14
".
9.2.
Low level protection
+
8
This safety installation is independent of the control circuit.
If the low liquid level protection device is triggered, a complete shutdown of the
compressor and circulating pump is effected.
The alarm is indicated by optical and audible signals (continuous tone) and on
the LED-DISPLAY appears the error message
"
E
rror
01
".
L
Turn off the unit with the mains switch, refill bath fluid and turn the unit on
again!
Caution:
For refill always use the same bath fluid type that is already in the bath.
Notice:
Check the low liquid level protection device at least twice a year!
To execute a functional test, drain the liquid until the alarm for low liquid level is
triggered. Refill liquid afterwards.
