Testing And Replacing Auxiliary Fan Units; 9.4.15.1 Testing Auxiliary Fan Units - ABB ACS6080 User Manual

Testing and replacing auxiliary fan units

9.4.15
• Inspection intervals: see the "ACS6080 preventive maintenance
schedule" (3BHS838899 E01).
• Service during operation: possible
• Location:• installed behind the doors of the following cabinets:
- COU cabinet (2 fan units)
- WCU cabinet (2 fan units in WCU and 2 fan units in the
optional REB)
- Water-cooled EXU cabinet

9.4.15.1 Testing auxiliary fan units

To switch the fan units on and off for the test, use the thermostats of the
fan units.
Thermostat location
COU
WCU
Procedure
1. Switch on the auxiliary voltage for the fan unit to be tested.
2. Take note the setting of the thermostat.
The factory-set value is also stated on the Settings label. The label is
attached to the inside of the cabinet door.
3. To switch on a fan unit, turn the dial of the thermostat from the
factory-set value to a low value.
4. Check that the fans run smoothly and if a fan is faulty, replace the
complete fan unit.
5. Set the thermostat to the factory-set value.
3BHS842007 E01 REV C
09 PREVENTIVE AND CORRECTIVE MAINTENANCE
Identification
B2981
B5741
ACS6080 USER MANUAL
Factory-set value
45° C
45° C
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