Maintenance After Every Year Of Operation - Powermate Aluminum LE 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, outer and carriage 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 screws as outlined under "Drive Screw Removal and Installation". Clean the
drive screws and ballnuts. Do not remove the ballnuts from the drive screws.
7. Check for a close running fit between the drive screws and the ballnuts. There should be no
wobble or excessive clearance and the ballnuts should run smoothly and freely. There is a
small tube on the side of the ballnuts 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 ballnuts are in good condition. If any of these checks reveal a problem, replace the
ballnut(s) as outlined in the manual.
8. If during the test of the equipment in step #1, there was excessive vibration, check the drive
screws for straightness. Replace the drive screw(s) as outlined in the manual if the drive
screw(s) is at all bent.
9. Check that the ballnut locknuts, drive couplings, top and bottom red urethane bumpers and
brake caps are all in good condition.
10. Replace all of the components for the brake assemblies and the override bearings as outlined
elsewhere in this manual.
11. Check that the electric motor armatures, brushes and bearings are in good condition.
Reassemble the drivescrew assemblies and electric motors in the equipment as outlined
12.
elsewhere in this manual.
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PowerMate Operation Manual
PN 013670 Rev.D2
Eng. 12/ 12/ 12