11 Maintenance
The Danfoss variable speed drive is maintenance-free over
its entire lifetime, except the internal cooling fan, that
eventually must be replaced depending on operation
hours and conditions. When an over-temperature alarm
occurs (see
7 Fault Conditions, Messages and Causes
), a
possible cause could be a worn out or excessively
contaminated cooling fan that does not provide sufficient
air flow across the heat sink. If so, the fan must be
replaced with an original spare part.
11.1 Replacement of Internal Cooling Fan
NOTE
Disconnect power to the variable speed drive and wait for
5 minutes before commencing maintenance!
The fan is connected to high potential!
1.
Carefully unplug the supply cable by lifting the
lock and retracting the plug (do not pull the
cable to retract the plug), see
2.
Lift the flat on the air duct to unlock the fan and
remove the fan (no tools required - see
).
3.
Insert the plug of the new fan, make sure the
plug is locked.
4.
Insert the new fan and click it onto the air duct.
5.
Check that the fan runs properly after
reconnecting power and resuming operation.
175ZB058.11
Illustration 11.1 Unlock and Remove the Fan
175ZB035.11
Illustration 11.2 Unplug the Supply Cable
11.2 Cleaning
It is recommended to periodically check the drive and
especially the cooling fan for contamination with dust,
debris (i.e. leaves), insects etc.
NOTE
Do NOT use a water hose, high-pressure cleaner or
compressed air for cleaning purposes!
Using a water hose, high-pressure cleaner or compressed
air for cleaning, can damage the drive.
To clean the inlet grid, use a soft cloth or brush to wipe of
dust and dirt. Check proper function after cleaning.
Maintenance
VLT
®
Inverter Scroll CDS 801 Operating Instructions
MG10V402 - VLT
®
is a registered Danfoss trademark
51
11
11
