Insufficient or no coolant flow
Coolant level too low
Top up coolant. Attention when using OPT/i CU Torch deflate - see section
OPT/i CU Torch deflate: Emptying/filling the torch hosepack from page
41
Constriction or foreign body in cooling circuit
Remove constriction or foreign body
Coolant contaminated
Change the coolant and then bleed the cooling unit
Coolant return filter and / or coolant pre-filter (only with CU 1200i Pro /MC)
installed
Clean coolant filter using clean tap water or change filter element
Coolant pump defective
Contact After-Sales Service
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Insufficient or no coolant flow (with CU 800i, CU 1100i, CU 1100i /MV):
Coolant pump sticking
Turn coolant pump shaft (see section Turning the coolant pump shaft on
page 52). Contact After-Sales Service if the coolant pump shaft proves im-
possible to turn
Cause:
Remedy:
Coolant pump does not work after turning the coolant pump shaft (with CU 800i,
CU 1100i, CU 1100i /MV):
Temperature switch on coolant pump has tripped
Wait until the end of the coolant pump's cooling phase (2 - 3 minutes)
Cause:
Remedy:
Insufficient or no coolant flow (with CU 800i Pro, CU 1100i /460 V, CU 1100i /MV
RVP, CU 1200i Pro /MC, CU 1400i Pro /MC):
Coolant pump sticking
Contact After-Sales Service
Cause:
Remedy:
Insufficient cooling power
Cooler contaminated
Gas purge cooler with dry compressed air (see section Gas purging the
cooler on page 60)
Faulty fan
Contact After-Sales Service
Coolant pump defective
Contact After-Sales Service
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
High operating noise level
Coolant level too low
Top up coolant. Attention when using OPT/i CU Torch deflate - see section
OPT/i CU Torch deflate: Emptying/filling the torch hosepack from page
41
Coolant pump defective
Contact After-Sales Service
Cause:
Remedy:
Cause:
Remedy:
50
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