Inteli-Touch RMM-V Information

BFR Replacement - CONTINUED

Hi-Rel BFR Replacement

To test or replace a BFR it is necessary to partially disassemble the fan.

CAUTION: SHARP BENDING OR FOLDING OF THE BFR COULD DAMAGE IT. HANDLE WITH CARE.

1. TURN POWER OFF BEFORE DISASSEMBLING THE FAN.

2. Remove the blades and blade holder assemblies.

3. Remove the housing thru-bolts while holding the bottom plate in place.

4. Remove the bottom plate and center band.

5. To test for a defective BFR remove the BFR connector from the RMM board and plug a new BFR into the RMM board. If the problem is eliminated, replace the BFR as follows:

To remove the defective BFR, the RMM support shroud must first be removed. To do this, first remove both connectors from the RMM board by grasping the edges and gently pulling out with a very slight rocking motion. Loosen the two support screws to remove the RMM support. Now completely remove the two support screws. CAREFULLY peel the BFR from the motor housing, starting at one end. Clean any remaining adhesive from the motor using naphtha or lighter fluid.

6. CAREFULLY peel the paper backing from the new BFR. CAREFULLY position one end over the support screw hole, then gently but firmly wrap the BFR around the motor, CAREFULLY keeping it in alignment so that the holes and slots in the ends of the BFR will align with the holes in the motor. Make sure there are no air bubbles or wrinkles in the BFR; it must adhere as tightly as possible to the motor. Next, reinstall the two support screws and slide the RMM support into place. Tighten the screws and CAREFULLY reinstall the connectors, insuring the cable connector pin #1 matches with jumper pin #1.

7. To complete the re-assembly, raise the center band and bottom plate into place. Use several pieces of masking tape to hold the assembly together while inserting the thru-bolts.