PRG BEST BOY HP SPOT LUMINAIRE, Service Manual

Page: 105 / 241

BEST BOY
®
HP SPOT LUMINAIRE
|
SERVICE MANUAL
|
MAINTENANCE
PAGE
95
Replacing Ballast
Parts:
21.9817.0810 1 EA ASSY, BALLAST, BEST BOY HP SPOT
Tools:
#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 38.)
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 3-54 ).
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, it will
still be tethered by Relay wires and ground cable.
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.