VARILITE VL4 - Magenta Stepper Motor Removal and Replacement

3-48
V
ARI
*L
ITE
®
-
VL4
W
ASH
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL 02.9628.0010
7-Oct-97
3.3.3.2 Magenta Stepper Motor Removal and Replacement
Parts
:
1 EA ASSY, MOTOR & MOUNT, DFD (22.9628.0239)
Tools
:
Screwdriver, Phillips #1
Screwdriver, Phillips #2
Nutdriver, 5/16 inch
Versilube
Note
: The stepper motors currently manufactured have a larger bearing
that older versions. The larger bearing does not fit the magenta motor
mount. Since it is not possible to modify the motor mount outside of a
shop, a repair assembly has been created with a new motors and a modified
mounting bracket. The required MTA connectors and strain relief are part
of the repair assembly.
Step 1. Remove power to luminaire.
Step 2. Remove dimmer/filter/douser assembly from luminaire head
(
Figure 3-7
).
Note
: If bulkhead is fitted with black, Kevlar dimmer belt replace black
belt with new blue belt (10.9628.0221).
Step 3. Remove dimmer motor (with mount and pulley) and magenta
motor (with mount).
a. At magenta motor, remove two 4-40x3/8"PFZ screws and
two 4-40x3/8"PPZ screws and #4 internal tooth lock
washers that secure motor mount to bulkhead.
b. Remove motor mount.
DFDVW2
2-56X1/4"PPZ SCREW
DIMMER MOTOR
PULLEY
4-40X3/8"PFZ SCREW
DIMMER MOTOR
MOUNT
DIMMER MOTOR
#4 LOCKWASHER
#8 FLAT WASHER
8-32X5/16"
SCREW
WORM WHEEL
MAGENTA MOTOR
MAGNETA MOTOR
DRIVE SHAFT
BUSHING
MAGENTA MOTOR
DRIVE SHAFT
BUSHING
4-40X3/8"PFZ
SCREW
4-40X3/8"PPZ
SCREW
Figure 3-8. Magenta Stepper Motor Removal and Replacement