Replace Ac Spd - Delta M30A 231 Operation And Installation Manual

5.2.1 Replace AC SPD

1. Turn off the AC and DC power, and wait until the LED indicators turns off.
2. Follow Section 5.1.1 to open the door.
3. Loosen the screw and remove protective cover.
4. Loosen 3 screws, remove wires and disconnect signal cable to take off AC SPD.
5. Install the new AC SPD unit with procedures above in reverse order and
tighten the screw with 0.8 N∙m torque.
6. Install the protective cover and tighten the screw with 0.8 N∙m torque.
7. Follow Section 5.1.2 to close the door.
Figure 5-5: Steps of changing AC SPD
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* Screw torque: 0.8 N•m
* Screw torque: 0.8 N•m
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