Maintenance intervals
Object
Check/Task
Weekly Monthly Yearly
General
construction
Operation
Abnormal phenomenon, for example noise or
heating. If clearly increased, contact Danfoss
representative.
X
Mounting
Tightness of the screws. Tighten to proper
value if necessary. Applies to screws that are
presented in this user guide. See Chapter
on page 26.
X
Enclosure and
connected parts
Check cleanliness. Clean if necessary. See
on page 64.
X
Electrical system
Cables
Visual check, for example wear. Replace if
necessary.
X
Electrical
connections
Check connections. Ensure that sufficient
tightening torque is applied to cable glands.
See Chapter
X
Groundings
(earthings)
Check groundings (earthings). Ensure that the
connection resistance is valid. Re-connect if
necessary.
X
Cooling system
Operation
Functioning. Cooling system functions as
specified.
X
Tubing and
connection
tightness
No visible leakage. If leaking, tighten
connections appropriately, or replace parts.
X
Ventilation plug
Cleanliness. Clean if necessary. See Chapter
X
Coolant quality
Use the coolant as specified (water-glycol
mixture appropriate). Refill if necessary. See
on page 37
on page 64.
X
Cooling system maintenance
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.
Cleaning
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.
User Guide
EC-C1700B-420
Maintenance
64 |
©
Danfoss | June 2023
BC454142332191en-000101
