ABB PSTX370 Service Manual page 71

4.7.1 Change the SCR
DISMANTLE THE SOFTSTARTER
Remove main power cables and control
cables
Disconnect the main power cables and the control
cables as described in chapter 4.3.3, step 1-3.
Remove cover and PCBA
Dismantle the front cover, all cables and the PCBA
as described in chapter 4.4.1, step 1-5.
CAUTION
Use protective gloves when working with cover
plates to prevent cutting injuries.
1. Remove fan cover
1
Loosen (6x) Torx 20 M4x8 from the fan
cover. Screws are located in each corner, and on
the center bracket, of the fan cover.
2
Pull the fan cover outwards from unit with the
fans still mounted to fan cover.
2. Remove top cover
1
Loosen (6x) Torx 20 M4x8 and pull the top
cover outwards from unit. Screws are located in
each corner, and on the center bracket, of the top
cover.
3. Remove front- and side cover
1
Remove the front cover by lifting it upwards
from unit.
2
Remove the side covers by tilting them
outwards from unit until disengaged from rails.
1
2
3
| Service Manual | Service PSTX470...570
1SFC13105M0201
Tx 20
M4 x 8
1
2
4.7.1_1
Tx 20
M4 x 8
1
4.7.1_2
1
2
4.7.1_3
4
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