HAPP 40
© 2013 HAPP Australia Pty Ltd
Version 8
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P a g e
Test:
Are both columns making the clicking noise?:
o
If the slave column is not on single point release models you
most likely have the cable to the slave column too tight.
o
If there is not clicking on dual point manual release models you
most likely just need to pull the release cables to free them up.
3. Safety release operation Safety latches engagement -2
a. Lower the carriages with the release lever on the pump (
not
the single
point release lever for single point release or cables on carriage for dual
point release)
b. The arms should lower and engage the safety latches on both columns
at close to the same time.
Test:
The safety latches did not engage.
o
If the safety’s have not ‘clicked’ when raising the hoist, then most
likely it has not been raised enough. Continue to raise higher to a
height of 1m or until you hear the clicking sound of the latches
engaging. If you do not hear this the release cables are too tight.
Check cable routing and adjustment as above.
One side of the latches engages the other falls lower and stops:
o
It is likely that this is a single point release model and the cable
connecting the two sides is too tight and you did not hear the latch
engaging (clicking) on the way up.
o
The balance cable is a long way out of adjustment. This is
addressed below in next section.
4. Safety release operation Safety latches release
a. Raise the hoist about 25mm to take the pressure of the safety latches.
b. Release the safeties on each column (lever for single point release or pull
latch cables on each carriage for dual point release with a firm pull. You will
hear a click as the safety’s release)
c. Lower the carriages with the release lever on the pump
d. The hoist should continue to lower until the carriages hit the floor.
Test:
The carriages did not lower to the ground.
o
On single point release, the safety cables may be too loose and not
retracting the safety latch , lift the carriages to release pressure and
manually pull the safety latch out and try again. The latch that freed the
carriage is the one that needs to be tightened.
o
On dual point manual release, it is likely the safety was not disengaged
firmly enough or the latch still had pressure on it when disengaging.
Raise the hoist again until pressure is off and firmly pull each release
cable.
