3-78
V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
Step 5.
Install replacement pan mechanism belt.
a. Slide yoke pan tube into first bearing of electronics chassis
lid through belt.
b. Slide yoke pan tube into driven pulley assembly.
c. Fit belt to driven pulley.
d. Slide yoke pan tube into second bearing.
e. Install pan shaft collar on yoke pan tube and using 7/64 inch
T-handle Allen wrench, tighten setscrew in hub of pan shaft
collar. Ensure that hub clamp of pan shaft collar is firmly
set against bearing and that there is no vertical movement of
yoke pan tube.
f.
Place 0.06 inch spacers between pulley and chassis lid. If
spacers are not available, medium size tie wraps can be
placed flat on both sides of the pulley (one on each side) to
act as temporary spacers.
g. Using 5/32 inch Allen wrench, evenly tighten all 6-
32x7/16"SCB screws on driven pulley.
h. Remove spacers or tie wraps.
Step 6.
Re-install pan mechanism in luminaire.
a. Fit belt from driven pulley to drive pulley of pan mechanism.
b. Insert replacement pan mechanism into pan/fan housing.
c. Fit #10 black flat washer to 10-32x7/8"PPB screw and
thread screw into blue grommet on pan and pan/fan housing
(top side) and into floating nut of pan mechanism.
d. Apply Loctite 242 to three 10-32x1-1/2"PPB screws and
insert screws into top of chassis lid and through blue
grommets into legs of pan mechanism. Secure screws in
place with #10 flat washers and 10-32 KEPS nuts.
e. Connect four- and five-pin IDC connectors to pan-
motherboard cable assembly.
