SVS PLASMA ONE 4 - Manual (Page 14)

• When the tilt has been adjusted, tighten the 3 /
8
-inch-16 bolt. Figure 10. Mounting Plate Center
• Caution: If the tilt is set to more than 3 degrees and the boom does not compress the limit
microswitch, the motor will not stop which could cause the lift cable to slack or unwind from the
cable drum and damage the screen and/or lift.
Figure 11. Lift Tilt Adjustment
12. MAINTENANCE AND ADJUSTMENTS
a. Maintenance
• Inspect the Lift occasionally for any loose bolts or cable clamps.
• Check the Drum Lock Assembly to see if the Drum Lock solenoid energizes and raises the Drum Lock
arm when you press the Down toggle switch to lower the Lift. At all other times the Drum Lock
solenoid is de-energized and the Drum Lock arm stays in its down position. If the solenoid does not pull
up, the microswitch will not allow the motor to turn when to lowering the Lift.
• Check the Drum Lock pawl (white nylon piece) located on the Cable Drum. The pawl should move
freely and drop when when it reaches the top of the Cable Drum's rotation, avoiding contact with the
Drum Lock arm. If the drum rotates too fast, the pawl will swing out and catch the arm, locking the
drum.
• The Cable Drum Bearings (pillow block bearings) are pre-lubricated and do not require attention.
• The Lift motor does not require attention. If the magnetic brake (part of the Lift motor) does not
hold properly, it should be replaced immediately.
WARNING
To prevent personal injury and property damage when servicing any part of the lift drive system (electric
motor/brake, drive chain/sprockets, steel lift cables, and/or drum lock assembly) the screen must be
removed and the lift's lower frame supported by straps, chain, or cable to prevent it from lowering
unexpectedly while the drive system is being serviced.
SVS Plasma One 4 Lift Installation Instructions Page 14 of 16