English (GB)
67
9.4.2 Retightening the DC connections
This task must be performed by certified service persons.
Fig. 76
DC connections of electrolysis cells
Rigid copper bars
Perform the following steps for all relevant DC connections.
1. Switch off the main switch of the rectifier.
2. Remove sensor (1).
3. Remove screw (5).
4. Create enough space in front of copper adapter (9) to apply a
torque wrench.
– Move copper bar (2) to the end of guide bolts (8). If
necessary, remove DC cable glands (3).
5. Retighten copper adapter (9) with a torque wrench.
– Torque: 90 Nm.
6. Reinstall all dismantled parts.
7. Retighten screws (4) with a torque wrench.
– Torque: 60 Nm.
8. Retighten screw (5) with a torque wrench.
– Torque: 80 Nm.
9. Switch on the main switch of the rectifier again.
Flexible copper bars
Perform the following steps for all relevant DC connections.
1. Switch off the main switch of the rectifier.
2. Remove sensor (10).
3. Remove screw (13).
4. Remove flexible copper bar (15).
5. Retighten copper adapter (14) with a torque wrench.
– Torque: 90 Nm.
6. Reinstall all dismantled parts.
7. Retighten screw (13) with a torque wrench.
– Torque: 80 Nm.
8. Switch on the main switch of the rectifier again.
Rectifier
1. Switch off the main switch of the rectifier.
2. Retighten the DC connections of the rectifier with a torque
wrench.
– Torque: 80 Nm.
3. Switch on the main switch of the rectifier again.
WARNING
Electric shock
Death or serious personal injury
- Before starting work on the system, make sure that
the power supply has been switched off and that it
cannot be accidentally switched on.
TM
06 223
8 061
7
Pos.
Description
1
Temperature sensor
2
Rigid copper bar
3
DC cable glands
4
Screws for DC cable glands
5
Copper bar screw
6
Spring washer
7
Washer
8
Guide bolt
9
Copper adaptor
10
Temperature sensor
11
Washer
12
Spring washer
13
Copper bar screw
14
Copper adaptor
15
Flexible copper bar
1
4
2
3
5
4
3
8
9
7
6
10
11
12
13
14
15
