21
8.
Motor overheats.
9. Hook fails to stop
at either or both
ends of travel.
10. Hook stopping
point varies.
A) Excessive Load.
B) Low Voltage.
C)
Extreme external heating.
D) Frequent starting or reversing.
E)
Phase failure or unbalanced current
in the phase.
F) Brake dragging.
A) Limit switches not opening circuits.
B) Shaft not rotating.
C) Traveling nuts not moving along
shaft—guide plate loose; shaft or
nut threads damaged.
A) Limit switch not holding adjustment.
B) Brake not holding.
A) See Item 1H.
B) Check for low voltage condition
as described on page 10.
C) Above an ambient temperature
of 104°F. (40°C.), the frequency
of hoist operation must be lim-
ited to avoid overheating of
motor. Special provisions
should be made to ventilate
the space of shield the hoist
from radiation.
D) Avoid excessive inching, jogging
or plugging. This type of oper-
ation drastically shortens the
motor and contactor life and
causes excessive brake wear.
E) See Item 1B.
F) Check brake adjustment as
described on page 15.
A) Check switch connections, elec-
trical continuity and mechani-
cal operation. Check the switch
adjustment as described on
page 10. Check for a pinched
wire.
B)
Check for damaged gears.
C) Tighten guide plate screws.
Replace damaged part.
A) See Item 9.
B) Check the brake adjustment as
described on page 15.
TROUBLE
PROBABLE CAUSE
CHECK AND REMEDY
Содержание Lodestar XL
Страница 4: ...iii ...
Страница 31: ...27 TWO SPEED HOIST ONLY 2 TON TWO SPEED HOIST WITH TROLLEY ...
Страница 32: ...28 3 7 TON SINGLE SPEED HOIST WITH TROLLEY 3 7 TON 2 SPEED HOIST WITH SINGLE SPEED TROLLEY ...
Страница 42: ...39 40 2 TON ANTI TIPPING BRACKET KIT 670 464 ...
Страница 45: ...43 3 THRU 7 TON PLAIN GEARED AND MOTOR DRIVEN TROLLEYS EXPLODED VIEW 29 ANTI TIPPING BRACKET KIT ...
Страница 51: ...49 NOTES ...
