SVS MINI 5 LIFT Installation Manual - page 12
9. SETTING THE SHOW POSITION:
The show position is adjusted by loosening the thumb screw on the show microswitch bracket, located on
the upper motor frame -as seen in figure 11:
a. Operate the lift in a service mode and
lower the lift to the desired show
position.
b. Loosen the thumb screw and slide the
show microswitch along the roller guide
until it touches the larger retainer washer
(as you position the switch over the roller,
you should hear a slight click when the
microswitch is compressed). Make sure
that the microswitch is not positioned too
close to the washer because it must pass
over it when the lift lowers to a service
position.
c. The show position is now set. Raise the
lift back to a closed position, turn the key
switch to the "show" position and press
the toggle down. The show
position is adjustable with an accuracy of
+/-1/8" (0.32 cm).
Figure 11.
10. MAINTENANCE AND ADJUSTEMENTS
•
Inspect the lift occasionally for any looseness of bolts, check cables and clamps. Pillow block bearings
are pre-lubricated and motor does not need attention. If magnetic brake does not hold properly, it
must be replaced immediately.
•
Level corrections are to be made (with projector mounted) after confirming that the cable is packed
tightly and is straight on the drum.
•
Position a level across the front of the projector. Fine alignment is done by adjusting nuts on the
bottom of the eye bolts. Track up and down until satisfactory alignment is achieved.
•
For projectors mounted within the ceiling and lowered to a viewing position, level adjustments must
be made at the viewing level.
•
After adjustments are completed, check all bolts and clamps for tightness.
•
Check drum lock solenoid occasionally – see if arm raises during down travel – all other times it stays
in a locked position. If the solenoid does not pull up, the microswitch will not start motor in the
down position. Check the centrifugal cam located on the drum stop block. It should be able to
move freely and will drop when it reaches the top of the drum, this avoiding contacting the arm of
the drum lock. If drum rotates fast, the cam will lock the arm after the first rotation.
•
All scissor bolts are adjusted for no slack, but must not be too tight. To adjust, tighten to
approximately 151 Lbs Torque, then back of 1/8". These bolts have nylon locking nuts and should
stay at this position.
S V S M I N I 5 L I F T I N S T A L L A T I O N
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R E A R O F L I F T
A D J U S T A B L E S W I T C H