Electrical connections, Cleaning / repairing the unit – JULABO F38-EH Refrigerated and Heating Circulators User Manual
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EH
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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.
1
3
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.