Heatsink Fan; Door Fan: Ip21 (Nema 1) Or Ip54 (Nema 12) Enclosures Only; Top Fan (Ip20 Enclosures Only); Brake Igbt Module - Danfoss VLT FC 100 Service Manual

Disassembly and Assembly In...

7.4.21 Heatsink Fan

1
4
7 7
Figure 7.24 Heatsink Fan
1 Captive screw (T25)
2 Captive screw (T25)
Table 7.24 Legend to Figure 7.24
1. Remove the fan cover by removing the two
captive screws (T25).
2. Unplug the fan electrical connector.
3. Remove the fan by pulling it free from the
mounting studs.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
NOTICE!
If there is an options cabinet connected to the
adjustable frequency drive, see chapter 7.6.2 Replacing
the Heatsink Fan with Options Cabinet Present for fan
removal instructions.
7.4.22 Door Fan: IP21 (NEMA 1) or IP54
(NEMA 12) Enclosures Only
1. Unplug the fan electrical connection.
2. Remove the door fan by removing four nuts (0.3
in [7 mm]), using an open-ended wrench.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
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Service Manual
2
3
3 Fan
4 Fan cover
Danfoss A/S © Rev. 2014-02-10 All rights reserved.

7.4.23 Top Fan (IP20 Enclosures only)

1. Remove two screws (T25).
2. Slide the fan and bracket forward and pull them
out.
3. Unplug the inline connector (not shown).
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.

7.4.24 Brake IGBT Module

1
9
8
Figure 7.25 Brake IGBT Module
1 (+) DC bus rail
2 (-) DC bus rail
3 Mylar shield
4 Brake IGBT output to R(-)
terminal
5 Snubber capacitor
Table 7.25 Legend to Figure 7.25
1. Remove the IGBT gate drive card in accordance
with chapter 7.4.14 IGBT Gate Drive Card.
2. Remove the DC bus rails in accordance with
chapter 7.4.18 DC Bus Rails.
3. Remove the snubber capacitor and three bus bars
from the brake IGBT by removing three screws
(T40)
4. Remove the Mylar shield by removing two plastic
standoffs.
2
3
4
5
7 6
6 (-) DC to brake IGBT
7 Brake IGBT
8 (+) DC to brake IGBT
9 IGBT gate drive card
MG94A222