Owner manual

EH
29
8. Electrical connections
Notice:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the plug housing.
/ Control output
The  connector may be used for control of JULABO refrigerated
circulators or as output for alarm messages.
13
2
4
5
Circuit: Operation = relay powered
Alarm = relay not powered
Pin assignment:
Pin Signal
1 +24 V (I max. current 25 mA)
2 0 V
3 Alarm relay
4 Reserved - do not use!
5 Reserved - do not use!
9. Cleaning / repairing the unit
Caution:
 Always turn off the unit and disconnect the mains cable from the power
source before cleaning the unit.
Prevent humidity from entering into the circulator.
 Electrical connections and any other work must be performed by qualified
personnel only.
To maintain the full cooling performance, clean the condenser from
time to time.
 Switch off the unit, disconnect mains power cable.
 Hold the venting grid, pull out and remove.
 Clean the ribbed condenser with a vacuum cleaner.
 Replace the venting grid.
 Switch on the unit.