Harrington Hoists and Cranes Static/Dynamic Hoist Load Tester - Manual (Page 15)

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3.2 The following is a suggested procedure for load testing a manually operated
hoist.
Step 1: Follow Steps 1, 2, and 3 of the suggested procedure for an electrically operated
hoist.
Step 2: Choose the corresponding master link on the lower beam and engage the bottom
hook through the master link. Remove all slack from load chain.
Step 3: Connect the hoist load tester to the correct power supply and depress the black
button on the electrical enclosure energizing the test stand.
Step 4: After the pump has charged the accumulator, adjust the reducing valve knob,
item 10 drawing 50924, to the pressure setting on the calibration chart that
corresponds to the capacity of the hoist being tested.
Step 5: Raise the hoist until the cylinder rod has extended approximately 1" and leave
the hoist suspended for 30 to 60 seconds. The hoist has now been tested.
Step 6: Lower the hoist and disconnect it from the tester. This cycle will be repeated for
every load test on manually operated hoists.
Maximum cylinder stroke is 5". Do not try to exceed this value. Hoist and
test stand overload will occur.
Do not overload the hoist tester. Overloading will shorten the life of the unit
or cause a possible accident and will void the warranty.
If gauge pressure reading exceeds 1800 psi, STOP OPERATION...
the hoist tester has reached its limit.
Do not switch links from 5 ton capacity to 10 ton capacity.
Do not overload the hoist beyond 125% of its rated capacity.
Anytime the cylinder lines are disconnected, the hoist tester MUST
BE RECALIBRATED.
Calibration of the hoist load tester is recommended on an annual
basis.
Remove tagged plug on pump tank and replace with vented cap before
operating system.