d.
Hoist Loss of Power Test: After raising test load to
approximately 2.5 m 8 feet, slowly lowering the test load, the
main power source and control pushbutton shall be released
verifying that the test load will not lower and that both brakes
will set. Test shall be repeated using micro-drive controls.
e.
Trolley Dynamic Load Test: While operating the trolley the full
distance of bridge rails in each direction with test load on the
hook (one cycle), proper functioning of all primary drive and
micro-drive speed control points and proper brake action shall be
tested.
f.
[Bridge] [Gantry] Dynamic Load Test: With test load on hook,
bridge shall be operated for the full length of runway in both
directions with trolley at each extreme end of [bridge] [gantry].
Proper functioning of all primary drive and micro-drive speed
control points and brake action shall be verified. Binding of the
[bridge] [gantry] end trucks shall indicate malfunction.
3.2.3.2
Trolley and Bridge Loss of Power Test
A test load of 100 to 105 percent of rated load shall be raised clear of
any obstructions on operating floor. Starting at a safe distance from
walls or other obstructions, a slow speed shall be selected using the
trolley and [bridge] [gantry] primary drive. While maintaining a safe
distance to obstructions, the main power source shall be disconnected and
brakes shall be verified to have set and that the equipment stops within
the distance recommended by manufacturer.
3.2.4
After the operational tests, bridge crane system and all functions of
bridge crane shall be tested at 125 percent of rated load.
3.2.5
Acceleration and Deceleration Tests
The acceleration and deceleration of bridge and trolley shall be tested
with approximately 10 percent of rated load at lowest possible location of
hook. Bridge and trolley shall be operated to run up to high speed and
then stopped without jarring or swinging the load.
3.2.6
Grounding Test
Hoist shall be tested to determine that the hoist, including hook and
pendant, are grounded to building during all phases of hoist operation.
The grounding of bridge and trolley shall be tested with approximately 10
percent of rated load on hook. Grounding shall be tested between hoist
hook and the structure's grounding system.
3.2.7
Adjustments and Repairs
Adjustments and repairs shall be performed by Contractor under the
direction of the Contracting Officer at no additional cost to the
Government, until satisfactory conditions are maintained, and contract
compliance is affected. After adjustments are made to assure correct
functioning of the components, pertinent testing shall be repeated.
SECTION 14630A
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