C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-87
02.9631.0010
CONFIDENTIAL
15 Jan 98
Step 19.
Slide pan belt around pulley and make sure belt is seated
properly.
Step 20.
Using 7/64 inch T-handle Allen wrench, evenly tighten all 6-
32x7/16"SCB screws (in a star pattern) on driven pulley.
Step 21.
Remove spacers or tie wraps.
Step 22.
Adjust tension of pan mechanism belt. Turn yoke so that
pulleys rotate back and forth. At same time, slowly tighten
adjustment screw until both tension and feed sides of belt are
taut (1/8” deflection desired). Using finger, check deflection of
belt when not in motion. Visual observation of belt may not
detect over-tightened belt.
Step 23.
Re-install yoke cables. Refer to Yoke Cable Assemlby Removal
and Replacement.
Step 24.
Re-install all mechanisms and assemblies by performing Steps 1
through 9 in reverse order.
3.3.8
ARC Power Supply Ignitor Maintenance
3.3.8.1
APS Ignitor Assembly Removal and Replacement
Parts:
1 EA
ASSY, VL2B APS IGNITOR (22.9631.0031)
Tools:
Screwdriver, Phillips #1
Screwdriver, Phillips #2
diagonal cutters
Tie wrap
To remove and replace APS ignitor assembly:
Step 1.
Remove power to luminaire.
Step 2.
Remove head covers.
a. Remove 20, 6-32x5/16"PFB screws that secure head covers
to rails. Remove both head covers.
