• Accessing the door
1. Switch DC power off and wait until LED display turns off.
2. To access the door, use procedure found in Section 5.1.1
Do not leave the door opened for long periods of time.
• Changing the SPD modules - use the following procedure:
The AC and DC SPD units are located as shown in Figure 5-6.
• To remove the defective AC SPD (Figure 5-7)
1. Disengage the 5 signal wiring connectors from the AC SPD PCB.
(4-pin x 1, 3-pin x 2, 2-pin x 2)
2. Disengage the 3 power wirings from the AC SPD PCB.
3. Remove two self-retaining screws located on the left (AC) side of the AC
SPD PCB.
4. Lift and remove the entire AC SPD PCB and replace with new unit.
5. Install the new AC SPD using the above procedure in reverse order.
Tighten the five screws to a torque value shown in Figure 5-7.
• To remove the defective DC SPD (Figure 5-8)
1. Disengage 1 signal wiring connector from the DC SPD PCB.
2. Disengage the 2 power wirings from the DC SPD PCB.
3. Remove two self-retaining screws located on the right (DC) side of the DC
SPD PCB.
4. Lift and remove the entire DC SPD PCB and replace with new unit.
5. Install the new DC SPD using the above procedure in reverse order.
Tighten the five screws to a torque value shown in Figure 5-8.
• Closing the door
To close the door, use the procedure found in Section 5.1.2
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Maintenance