Installing Regulator Board P/N 0-56921-4Xx In 1-5 Hp And 7.5-10 Hp Drives - Reliance electric GV3000 Installation Instructions Manual

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Installing Regulator Board P/N 0-56921-4xx in 1-5 HP and 7.5-10 HP Drives (Continued)
Step 6. Note the cable lead connections to the Regulator board terminalstrip. If these connections
are not documented elsewhere, record them now. Then disconnect these cable leads from
the Regulator board terminalstrip.
If the drive has an option board, such as the AutoMax® Network Communication option
board, installed below the Regulator board, continue to step 7. Otherwise, proceed to
step 8.
Step 7. (Drives with option boards only) Note the cable connections to the option board terminals. If
these connections are not documented elsewhere, record them now. Then disconnect
these leads from the option board terminal strip.
Step 8. Disconnect the green-striped keypad ribbon cable from the Regulator board. The cableis
located on the right-hand side of the drive. The cable connector is held in place by a small
retaining clip at its center. Insert a small screwdriver inside the cable loop, and press in on
the retaining clip while pulling out the connector.
Step 9. Removethe three (3) M4 x 10 screwsthat fasten the bottom of the support bracket to the
drive's heatsink.
Step 10. Disconnect the 26-conductor Regulator board ribbon cable from the Current Feedback
board located on the right-hand side below the keypad. The connector is held in place by
retaining clips at its edges. Spread these clips apart to release the connector.
Step 11. Move the support bracket aside and carefully pull out the Current Feedback board to
exposethe internal fan assembly connector plug. Use a small pair of pliers to pinch the
center retaining clip that holds the Current Feedback board in place.
Step 12. Unplug the internal fan assembly power connectorfrom the drive.
For 7.5 to 10 HP drives, continue to step 13.
For 1 to 5 HP drives containing an option board, proceed to step 14.
For 1 to 5 HP drives with no option board, proceedto step 16.
Removethe Regulator Board from the Keypad Support Bracket
Step 13. (7.5 to 10 HP drives only) Loosen the thumb screw onthe left side of the keypad support
bracketto release the top of the bracket from the bottom. Grasp the bracket on the
left-hand side and lift it up and to the left to separate the top bracket from the bottom.
If the drive has an option board, continue to step 14. If there is no option board, proceed to
step 16.
Step 14. (Drives with option boards only) Remove the option board from the support bracket. The
option board is held in place by two metal screwswith lock washers and twoplastic rivets.
To remove a plastic rivet, pull the post from the rivet body and then removethe bodyof the
rivet. Use a small pair of wire cutters or a similar tool to pry these pieces loose. NOTE: Do
not cutthe rivets.
Set the plastic rivets, metal screws, and lock washersaside for later use.
Step 15. (Drives with option boards only) Removethe Regulator board ribbon connector from the
option board. The connector is held in place by retaining clips at its ends. Spread these
clips apart to release the connector. Set the option board aside.
Step 16. Remove the old Regulator board from the support bracket. The Regulator board is held in
place by two metal screws with lock washers and twoplastic rivets. To remove a plastic
rivet, pull the post from the rivet body and then removethe bodyof the rivet. Use a small
pair of wire cutters or a similar tool to pry these pieces loose. NOTE: Do not cutthe rivets.
Setthe plastic rivets, metal screws, and lock washersaside for later use. Then slide the old
Regulator board out of the bracket.