Xylem IM167 R8 Aquavar CPC (Centrifugal Pump Control) - Manual (Page 126)

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Heatsink
The heatsink fins pick up dust from the cooling air. The drive runs into overtemperature warn-
ings and faults if the heatsink is not clean. In a “normal” environment (not dusty, not clean) the
heatsink should be checked annually, in a dusty environment more often.
Clean the heatsink as follows (when necessary):
1. Remove the cooling fan (see section “Fan” below).
2. Blow dry clean compressed air from bottom to top and simultaneously use a vacuum
cleaner at the air outlet to trap the dust. Note: Prevent dust from entering adjoining
equipment.
3. Replace the cooling fan
Fan
The life span of the cooling fan of the drive is about 50,000 (R7) and 60,000 (R8) hours. The
actual life span depends on the running time of the fan, ambient temperature and dust con-
centration. See the appropriate Aquavar CPC User Manual for the actual signal which indi-
cates the running time of the cooling fan.
Replacement fans are available from CentriPro. Do not use other than factory specified spare
parts.
Replacing the Fan (R7)
1. Remove the upper front cover and disconnect the control panel cables.
2. Disconnect the discharging resistor wire.
4
3
3
3
3
3
DC+ DC-
3
3
DC+
DC-
2
6
6
7
7
5
8
MAINTENANCE
(Frame Sizes R1-R6)