the pushbutton as the test load lowers. The load brake shall
prevent the test load from accelerating.
d.
Hoist Loss of Power Test (125 percent only): Raise the test load
to approximately 2400 mm 8 feet. While slowly lowering the test
load, disconnect the crane's power source. Verify that the test
load does not lower and that the brake is set.
3.2.5
Trolley/Hoist Load Test
Operate the trolley/hoist the full distance of the bridge rails in each
direction with a test load of 125 percent of rated load on the hook (one
cycle). Check proper functioning of all drive speed control points. Verify
proper brake action.
3.2.6
Bridge Load Test
With a test load of 125 percent of rated load on the hook, operate the
bridge for the full length of the runway in one direction with the
trolley/hoist at the extreme end of the bridge, and in the opposite
direction with the trolley at the opposite extreme end of the bridge (one
cycle). Check proper functioning of all drive speed control points. Check
for any binding of the bridge end trucks and verify proper brake action.
Record deficiencies. Secure from testing if deficiencies are found.
3.2.7
Rated Travel Test
Repeat travel tests for trolley/hoist and bridge with a test load of 100
percent of rated load. Repeat the test for 2 cycles to demonstrate proper
operation and repeatability of all functions without the overheating or
malfunction of any components. Check speed points during each cycle.
Completely stop the machinery at least once in each direction during each
cycle to ensure proper brake action.
-- End of Section --
SECTION 14637N
Page 22
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