Maintenance After Every Year Of Operation - Powermate ALUMINUM L Series Operating Manual

MAINTENANCE AFTER EVERY YEAR OF OPERATION

This equipment is designed for use as a heavy duty lifting device. To ensure operator
safety and continuing trouble free operation, have the equipment thoroughly checked
by a trained and competent service person at least once a year. This maintenance
should be performed using the following procedure.
1. Place a load of at least 300 pounds (140 kilograms) on the equipment. Cycle the
equipment up and down several times in order to evaluate its current condition. This
load test will help reveal the condition of the drive and brake systems, the frame
structures and the electrical components. Improper conditions may be exhibited by
excessive vibration, unusual noise or slow operation.
2. Check the inner and outer frame assemblies for bending, flattening, twisting, looseness
or worn surfaces of the frame members. Check the frame roller tracks for cracks and
worn surfaces.
3. Check the rollers for free rotation. Lubricate the roller axles with light machine oil.
4. Check that the two main frame wheels and main frame axle are in good condition.
Lubricate the two main frame wheels with multi-purpose grease.
5. Check that the strapbar mounting hardware is secure. Check that the load binding
straps are not cut or frayed and that the strap locking handles are secure.
6. Remove the drive screw as outlined under "Drive Screw Removal and Installation".
Clean the drive screw and ballnut. Do not remove the ballnut from the drive screw.
7. Check for a close running fit between the drive screw and the ballnut. There should be
no wobble or excessive clearance and the ballnut should run smoothly and freely.
There is a small tube on the side of the ballnut for the re-circulation of the ball bearings.
Check that the 2 tube halves are fastened tightly together. Check that the area of the
outside threads at the top of the ballnut is in good condition. If any of these checks
reveal a problem, replace the ballnut as outlined in the manual.
8. If during the test of the equipment in step #1, there was excessive vibration, check the
drive screw for straightness. Replace the drive screw as outlined in the manual if the
drive screw is at all bent.
9. Check that the ballnut locknut, drive coupling, top and bottom red urethane bumpers
and brake cap are all in good condition.
10. Replace all of the components for the brake assembly and the override bearing as
outlined elsewhere in this manual.
Check that the electric motor armature, brushes and bearings are in good condition.
11.
PowerMate
5.01
®
Operation Manual
PN 011670 Rev.E
Eng. 04/ 25/ 14