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User Guide
EC-C1700B-420
Maintenance
Cooling system maintenance
Cleaning
64 |
©
Danfoss | June 2023
Maintenance intervals
Object
General
Operation
construction
Mounting
Enclosure and
connected parts
Electrical system
Cables
Electrical
connections
Groundings
(earthings)
Cooling system
Operation
Tubing and
connection
tightness
Ventilation plug
Coolant quality
The cooling system of the electric device requires regular observation and maintenance
activities. Observe weekly that the cooling system operates correctly and check monthly that there are no
leakages in the cooling system. The quality of the coolant must be checked yearly. The mixture of water
and glycol as well as the type of the glycol used must be as specified. See Chapter
on page 37.
Do not use pressure washer for cleaning. High water pressure may damage the gaskets
allowing water to go in to the electric device.
Never open or remove the watertight breather plugs. Clean them only from the outside.
Check/Task
Abnormal phenomenon, for example noise or
heating. If clearly increased, contact Danfoss
representative.
Tightness of the screws. Tighten to proper
value if necessary. Applies to screws that are
presented in this user guide. See Chapter
Tightening torques
on page 26.
Check cleanliness. Clean if necessary. See
Chapter
Cleaning
on page 64.
Visual check, for example wear. Replace if
necessary.
Check connections. Ensure that sufficient
tightening torque is applied to cable glands.
See Chapter
Tightening torques
on page 26.
Check groundings (earthings). Ensure that the
connection resistance is valid. Re-connect if
necessary.
Functioning. Cooling system functions as
specified.
No visible leakage. If leaking, tighten
connections appropriately, or replace parts.
Cleanliness. Clean if necessary. See Chapter
Cleaning
on page 64.
Use the coolant as specified (water-glycol
mixture appropriate). Refill if necessary. See
Chapter
Recommended coolants
and
Cooling system maintenance
Weekly Monthly Yearly
X
X
X
X
X
X
on page 37
on page 64.
Recommended coolants
BC454142332191en-000101
X
X
X
X
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