PRG Best Boy Field Service Manual - Manual (Page 85)

BEST BOY 4000 ® SPOT LUMINAIRE FIELD SERVICE MANUAL 77
Replacing Ballast
Parts:
21.9816.0810 / 2.3749A-P10 1 EA ASSY, BALLAST
Tools & Supplies:
#2 Phillips screwdriver
5/32" Allen wrench, T-bar
WARNING: Remove power from luminaire before performing any maintenance procedures.
To replace the ballast:
Step 1. Remove power from luminaire.
Step 2. Remove both Enclosure Covers. (Refer to "Removing Upper Enclosure Covers" on page 27.)
Step 3. To disconnect wiring, partially remove Interface/LVS Assembly as follows:
a. At front of Interface/LVS Assembly, remove four 10-32 x 3/4" socket head screws (Figure 3-46).
b. Remove one 10-32 x 3/8" PPB screw that secures ground wire lug.
c. Pull assembly out of enclosure enough to access wiring.
d. Disconnect AC wires and Main Control wire.
Step 4. At front of Ballast, remove four 10-32 x 3/4" socket head screws. Pull Ballast partially out of enclosure.
Step 5. Disconnect Relay wires and ground cable.
Step 6. Twist Fan Cable connector to disconnect.
CAUTION: Use caution when removing the Ballast from the enclosure.
Step 7. Remove Ballast from enclosure.
Step 8. Install new Ballast by doing steps in reverse.