Carrier 39L handleiding
Handleiding
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33
MAIN FAN REPLACEMENT IP21 AND IP55
(UL TYPE 1 AND UL TYPE 12)
The main cooling fan of the VFD has a life span of about 60,000
operating hours at maximum rated operating temperature and
drive load. The expected life span doubles for each 18°F drop in
the fan temperature (fan temperature is a function of ambient tem
-
peratures and drive loads).
Fan failure can be predicted by the increasing noise from fan bear-
ings and the gradual rise in the heat sink temperature in spite of
heat sink cleaning. If the drive is operated in a critical part of a
process, fan replacement is recommended once these symptoms
start appearing. Replacement fans are available from Carrier.
To replace the main fan for frame sizes R1 through R8, perform
the following (see Fig.
28-32):
1. Remove power from drive. Wait for 5 minutes and then make
sure by measuring that there is no voltage.
2. Remove drive cover.
3. For frame sizes R1, R2, R3 and R4 press together the retain-
ing clips on the fan cover and lift. For frame sizes R5, R6, R7
and R8, remove the two mounting screws of the fan mount
-
ing plate at the bottom of the drive.
4. Disconnect the fan cable.
5. Install the new fan by reversing Steps 2 to 4.
6. Restore power.
Fig. 28 — Main Fan Removal
(Frame Sizes R1 up to R4)
Fig. 29 — Main Fan Removal
(Frame Sizes R1 up to R3)
Fig. 30 — Main Fan Removal (Frame Sizes R4)
Table 11 — Maintenance Aging
AGING
YEARS FROM START-UP
3 6 9 12151821
Common, control panel battery
Control panel battery RR
Cabinet auxiliary 24VDC power
supplies and buffers >-<
R
Frequency converter frames R1 to R8
CCU control unit R
Frequency converter frames R6 to R8
Flat ribbon cables R
DC circuit electrolytic capacitors
and discharging resistors
RR
ZINT, ZPOW, ZINP, QINT
module internal circuit boards
R
LEGEND
R — Replacement
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Productinformatie
| Merk | Carrier |
| Model | 39L |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14640 MB |
