PL-6K Series of Parking Lifts
54
P/N 5900056 — Rev. D — October 2021
Wire Rope Inspection and Maintenance
Your Lift’s wire rope should be inspected regularly:
•
Lifting Cables should be replaced when there are visible signs of damage or extreme wear.
Do
not use the Lift if it has damaged or worn cables; you must take it out of service!
•
Lifting Cables should be maintained in a well-lubricated condition at all times.
Wire rope is only fully protected when each wire strand is lubricated both internally and externally.
Excessive wear shortens the life of wire rope.
Use a wire-rope lubricant that penetrates to the core of the rope and provides long-term lubrication
between each individual strand, such as 90-WT gear oil or ALMASOL® Wire Rope Lubricant.
To make sure that the inner layers of the rope remain well lubricated, lubrication should be carried
out at intervals not exceeding three months during operation.
•
All Sheaves and guide rollers in contact with the moving rope should be given regular visual checks
for surface wear and lubricated to make sure they run freely. This should be done at least every
three months during normal operation.
For all Sheave axles, use standard wheel bearing grease. For all Sheaves and/or guide rollers, use
90-WT gear oil or a similar heavy lubricant, applied by any method including pump/spray
dispensing, brush, hand, or swabbing.
•
How often should you inspect?
Lifting Cables should be visually inspected at least once each day when during normal operation,
as suggested by American Petroleum Institute’s Recommended Practice 54 guidelines.
Any lifting Cables that have met the criteria for removal must be
immediately
replaced.
•
When should you replace lifting Cables due to broken wires?
Lifting Cables should be removed from service if you see six randomly distributed broken wires
within any one lay length or three broken wires in one strand within one lay length.
•
Are there other reasons to replace your lifting Cables?
Yes:
•
Corrosion that pits the wires and/or connectors
•
Evidence of kinking, crushing, cutting, bird-caging, or a popped core
•
Wear that exceeds 10% of a wire’s original diameter
•
Evidence of heat damage
•
How do you find broken wires?
a.
Relax your rope to a stationary position and move the pick-up points off the Sheaves. Clean
the surface of the rope with a cloth — a wire brush, if necessary — so you can see any breaks.
b.
Flex the rope to expose any broken wires hidden in the valleys between the strands.
c.
Visually check for any broken wires. One way to check for crown breaks is to run a cloth along
the rope to check for possible snags.
d.
With an awl, probe between wires and strands and lift any wires that appear loose. Evidence of
internal broken wires may require a more extensive rope examination.
Summary of Contents for PL-6KDT
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