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Troubleshooting
Safety
Troubleshooting
Not enough coolant circulation, or none at all
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cooling capacity too low
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
32
WARNING! An electric shock can be fatal. Before opening up the unit:
-
Shift the mains switch into the "O" position
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Unplug the unit from the mains
-
Put up an easy-to-understand warning sign to stop anybody inadvertently
switching it back on again
-
Using a suitable measuring instrument, check to make sure that electrically
charged components (e.g. capacitors) have been discharged
CAUTION! Inadequate PE conductor connections can cause serious injury and
damage. The housing screws provide a suitable PE conductor connection for
earthing (grounding) the housing and must NOT be replaced by any other screws
which do not provide a reliable PE conductor connection.
Coolant level is too low
Top up the reservoir with coolant
Constriction or foreign body in the cooling circuit
Eliminate the constriction or foreign body
Fuse for coolant pump is faulty
Replace the coolant pump fuse, as described in the section headed "Fuse
protection of the cooling-unit"
Coolant pump is faulty
Replace the coolant pump
The coolant filter in the plug-type connector for coolant return-flow is blocked
Clean the coolant filter with clean tap water or replace the filter-insert
Permissible duty cycle exceeded
Await cooling-down phase of the coolant pump
Fan defective
Replace fan
Cooling pump defective
Replace coolant pump
Cooler contaminated
Clean cooler with dry compressed air
Cooling capacity of cooling unit too low
Use cooling unit with higher cooling capacity
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