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Replacement Procedures
90 HercuLine™ 2000 Series Actuator - Installation, Operation and Maintenance Manual Revision 7
7/08
Power Distribution PWA
Fuses for
Motor Drive
Circuit
Figure 36 Motor Drive Circuit Fuses
Relay PWA Replacement
If a relay PWA needs to be replaced, follow the procedure in
Table 37 to access and replace the PWA.
Disconnect power before opening the actuator case. A potentially lethal shock
hazard exists inside the case if the unit is opened while powered.
Table 37 Relay PWA Replacement Procedure
Step Action
1 Remove AC power from actuator.
2 Remove the six screws and the cover of the actuator case. See Figure 35.
3 Lay assembly down on a flat surface.
4 Disconnect the wire connector from the relay PWA.
5
Carefully remove the relay PWA. Pry 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
backplane board. Locking tabs on the card guides will engage to secure the PWA in place.
7 Plug in wire connector to relay PWA.
8 Install a new gasket if needed and replace cover. Secure to actuator with screws.