VARILITE VL4 - Dimmer Belt Removal and Replacement

3-54
V
ARI
*L
ITE
®
-
VL4
W
ASH
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL 02.9628.0010
7-Oct-97
3.3.3.5 Dimmer Belt Removal and Replacement
Parts
:
1 EA BELT, DFD, VL4, .0826P, 98T, .250W (10.9628.0221)
Tools
:
Screwdriver, Phillips #1
Screwdriver, Phillips #2
Screwdriver, slotted #2
Nutdriver, 5/16 inch
To remove and replace dimmer/filter/douser assembly dimmer belt:
Step 1. Remove power to luminaire.
Step 2. Remove dimmer/filter/douser assembly from luminaire head
(
Figure 3-7
).
Step 3. Remove belt.
a. With honeycomb facing up, at dimmer motor belt, remove
2-56x1/4"PPZ screw that secures belt clamp to dimmer
actuator tab and remove clamp and screw (
Figure 3-11
).
b. Slip belt over end of one pulley and remove.
DIMMER ACTUATOR
BELT CLAMP
BELT
RINGVW
2-56X1/4"PPZ
SCREW
SECURE REPLACEMENT
BELT IN UPWARD-
MOST POSTION
Figure 3-11. Dimmer/Filter/Douser Assembly Dimmer Belt Removal and Replacement
Note
: If bulkhead is fitted with black, Kevlar dimmer belt, replace black
belt with new blue belt (10.9628.0221).
Step 4. Install replacement belt.
a. Slip new belt over pulley.
b. While holding belt in upward most position, replace clamp
and tighten in place with 2-56x1/4"PPZ screw. (This will
ensure belt will not collide with dimmer micro switch.)