Hofmann FPA12144, Инструкция по эксплуатации

Страница: 29 / 44

29 of 44
Wire rope tension adjustment should be performed when installing the lift and every three
months
.
8.2.6 INSPECT CABLE FLANGE
Make sure the edges of the counter ‐ bores in the cable flange are not damaged or worn,
indicating that cable sleeves may not be properly seated at all times.
8.3 FASTENERS
Check all the attaching bolts and nuts for tightness.
Note: Air cylinder bolts and nuts should allow movement of the cylinder.
8.4 SHEAVES AND PINS
Sheaves and pins are expendable items. Sheaves and pins should be replaced when worn. Use
of sheaves and pins with excessive wear will lead to reduced service life of the cables.
Bushings inside sheaves work best in “dry” condition. Applying oil will
diminish their performance and greases will degrade performance even
further. DO NOT GREASE SHEAVE BUSHINGS OR SHAFTS.
8.4.1 VISUAL INSPECTION OF SHEAVES

Check sheaves and replace if cracks or other damage are found.

Visually inspect alignment of sheaves. Misalignment of sheaves indicates excessive wear.
Remove, inspect, and, if needed replace sheave and pin.
8.4.2 MEASURE SHEAVE WEAR

Inspect sheaves in cross ‐ members with lift in lowered position and resting on safety
latches

Place safety stands under front and rear cross ‐ members. Stop lift on mechanical safety
locks. One person should hold the lowering handle on power unit down while another
person pulls on cables in each column to create slack in cables.

Check for ease of rotation. If sheaves do not turn freely, the sheave and sheave pin
should be removed, inspected, fixed or replaced.

Fully raise the lift, to inspect sheaves in runways. Hold lowering handle down to lower
lift onto safety latches

Pull on cables in runway to create slack in cables.

Check all sheaves for excessive wobble, or movement. Grasp rim of sheave and attempt
to wobble (tilt) side to side. If sheaves wobble (tilt) more than 3/16” (1.6 mm) side to