HAPP 40
© 2013 HAPP Australia Pty Ltd
Version 8
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P a g e
5. Balance cable tension
Adjusting the balance cables to synchronize the lifting and lowering allows the
safety latches to engage at the same time.
a. Raise the column up until the safety latches engage
b. Lower the hoist onto the safety latches. It is important that both safeties
have engaged as this will set the level of the hoist and ensure consistent
raising and lowering of the hoist.
c. Adjust each balance cable to have a common tension with approximately
12mm of free play in the cable on each carriage.
d. Raise and lower the carriages and observe the hoist operation
The cable that comes from the top of the column down the carriage is lifting the
carriage up from the other side – the lifting cable.
The cable that comes from the bottom of the column up to the carriage is pulling
the carriage down from the other side – the lowering cable.
Test:
o
The carriages are not rising evenly;; one carriage is slow, it is behind the
other fast carriage.
Loosen the lowering cable and tighten the lifting cable on the fast carriage.
Re check tension of cables as before
o
The carriages are not lowering evenly, one carriage is slow it is behind the
other fast carriage
Loosen the lowering cable and tighten the lifting cable on the slow carriage
Re check tension of cables as before
6. Column mounting
e. Lift different weights on hoist starting with light increasing to normal load
weight
Test:
f. Check that anchor bolts are at correct tension
Re tension anchor bolts
g. Check surrounding concrete for any cracks or deterioration.
Stop all tests, footings are not sufficient for the hoist.
h. Check column level is the same as installed
i. Check location are correct. If columns are shifting at all stop all tests and
check footings / anchor bolts are stable.
j. Continue to recheck the bolts for sound fixing and tight location of nuts with
vehicles loaded for the first week and at regular intervals during operation
of hoist.
