Electrical
system
Cables Wearing of the cables. Replace if necessary. X
Electrical
connections
Check connections. Make sure that sufficient tightening torque is applied to
cable glands. See Chapter Tightening torques.
X
Groundings
(earthings)
Check groundings (earthings). Make sure that the connection resistance is
valid. Re-connect if necessary.
X
Cooling
system
Operation Functioning. Cooling system functions as specied. 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 Cooling system maintenance.
X
Coolant ow
Coolant ow direction. Change direction by changing the connections or ow
direction from the pump.
See Chapter Cleaning.
X
Coolant quality
Coolant as specied. Proper glycol used, and water/glycol mixture
appropriate. Rell if necessary. See Chapter Cooling system maintenance.
X
Cleaning
Keep the electric machine clean. For cleaning, use non-abrasive and non-corrosive cleaning
products. Make sure that the detergent may be used for aluminium.
When pressure washing the machine, make sure that the water spray does not directly hit the
gaskets.
When cleaning the ventilation plugs, do not open / remove the plug. Clean the plug only
from
the
outside.
Cooling system maintenance
The electric machine cooling system requires certain regular maintenance activities.
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 specied. See Chapter
Recommended coolants
.
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