PRG Best Boy Field Service Manual - Manual (Page 101)

BEST BOY 4000 ® SPOT LUMINAIRE FIELD SERVICE MANUAL 93
CAUTION: Do not overtighten belt, pulley will break and/or bearings will fail.
To set belt tension manually:
Step 1. Orient head as shown in Figure 3-60.
Step 2. Manually move the luminaire head back and forth (tilt) or around (pan), noting the tension created on one
side of belt and deflections on the other.
Step 3. Using wrench, tighten belt adjustment bolt(s) until no bilateral deflection occurs.
.
Figure 3-60: Belt Tension Adjustment
J7 J2
J6
J9
J12
J14
J11
J13
J10
J15
J5
J8
J4
24
-9 81
6- 0 7 6 5 Y
o ke
D ri v er
T
ilt
Pa
n
CA
N
Driven Pulley
Feed Side
Drive Pulley
Tension Side
of Belt
Deflections are present
when belt is loose.
TILT MECHANISM
PAN MECHANISM
of Belt
Orient head as shown
100 - 240 V AC
12A Ma x 50 / 60 H z IN
DMX
THR U
ET HERNE T
AC I N
COMM
WAKE
R1