7. Maintenance - Replacement Procedures
88
10260S HercuLine® Actuator Installation, Operation and Maintenance Manual
Revision 5
7/07
Power Distribution PWA
Fuses for
Motor Drive
Circuit
Figure 32 Motor Drive Circuit Fuses
Relay PWA Replacement
If a relay PWA needs to be replaced, follow the procedure in Table 33 to access and replace the PWA.
WARNING
Disconnect power before opening the actuator case. A potentially lethal shock hazard exists
inside the case if the unit is opened while powered.
Table 33 Relay PWA Replacement Procedure
Step
Action
1
Remove AC power from actuator.
2
Remove the seven screws and the extended cover of the actuator case. See Figure 31.
3
Lay assembly down on a flat surface and remove old gasket.
4
Disconnect the wire connector from the relay PWA.
5
Carefully remove the relay PWA. Turn the locking tabs of the card guides away to unlock the
PWA and slide it out from the card guides.
6
Install the replacement relay PWA by sliding it into the card guides until it mates with the Main
CPU. Turn the locking tabs on the card guides to secure the PWA in place.
7
Plug in wire connector to relay PWA.
8
Install a new gasket and replace extended cover. Secure to actuator with screws.
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