[Bridge] [Gantry] shall be operated in each direction the full distance of
runway exercising all primary drive and micro-drive speed controls. Brake
operation shall be verified in each direction. [In slow speed the proper
operation (interrupt power, automatic reset) of the [bridge] [gantry]
limit-switches at both limits of [bridge] [gantry] motion shall be tested.]
In slow speed or micro-drive the crane [bridge] [gantry] bumpers shall
contact the runway rail stops.
3.2.2.4
Hoist Loss of Power No-Load Test
Using the primary drive, hooks shall be raised to a height of approximately
3.5 m 12 feet or less. While slowly lowering the hook the main power
source shall be disconnected, verifying that the hook will not lower and
that both brakes will set. Test shall be repeated using micro-drive
controls.
3.2.2.5
Travel Loss of Power No-Load Test
With the hook raised to clear obstructions and trolley traveling in slow
speed, the main power source shall be disconnected, verifying that the
trolley will stop and the brake will set. Test shall be repeated for
trolley using micro-drive speed. Test shall be repeated for [bridge]
[gantry] micro-drive and slow speed primary drive controls.
3.2.3
Load Test
**************************************************************************
NOTE: Delete references to micro-drive when not
applicable.
**************************************************************************
3.2.3.1
Hoist
Unless otherwise indicated, the following tests shall be performed using a
test load of 125 percent (plus 5 percent, minus 0 percent) of rated load.
a.
Hoist Static Load Test: Holding brakes and hoisting components
shall be tested by raising the test load approximately 300 mm 1
foot and manually releasing one of the holding brakes. Load shall
be held for 10 minutes. First holding brake shall be reapplied
and second holding brake released. Load shall be held for 10
minutes. Any lowering that may occur indicates a malfunction of
brakes or lowering components.
b.
Dynamic Load Test: Test load shall be raised and lowered through
the full range operating in each speed. Machinery shall be
completely stopped at least once in each direction to ensure
proper brake operation.
c.
Hoist Mechanical Load Brake: With test load raised approximately
1.5 m 5 feet and with the hoist controller in the neutral
position, holding brake shall be released. Mechanical load brake
shall be capable of holding the test load. With holding brake in
released position, test load shall be lowered (first point) and
the controller shall be returned to OFF position as the test load
lowers. Mechanical load brake shall prevent the test load from
accelerating.
SECTION 14630A
Page 54
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