Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 49)

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Table 5-5 Hoist (and Trolley) Inspection Methods and Criteria (continued)
Item Method Criteria Action
Trolley Wheel -
Tread Visual, Measure Diameter of the tread surface should not be less
than 5% of its original diameter as new. Replace.
Trolley Wheel -
Gear Visual Teeth should not be cracked, damaged, or
excessively worn. Replace.
Load Bar Visual, Measure Load Bar should be free of significant wear,
cracks, nicks and gouges. Load Bar should not
be bent. Replace.
Trolley Motor
Brake Visual Braking action should not be overly abrupt and
should not allow excessive drift. Adjust, Repair or
Replace as
required.
Contactor
Contacts Visual Contacts should be free of significant pitting or
deterioration. Replace.
Sheaves Visual Sheave should be free of significant wear. Replace.
Pendant -
Switches Function Depressing and releasing push buttons should
make and break contacts in switch contact block
and result in corresponding electrical continuity or
open circuit. Push buttons should be interlocked
either mechanically or electrically to prevent
simultaneous energizing of circuits for opposing
motions (e.g. up and down, forward and reverse). Repair or replace
as necessary.
Pendant -
Housing Visual Pendant housing should be free of cracks and
mating surfaces of parts should seal without gaps. Replace
Pendant - Wiring Visual Wire connections to switches in pendant should
not be loose or damaged. Tighten or repair
Pendant and
Power Cords Visual, Electrical
Continuity Surface of cord should be free from nicks,
gouges, and abrasions. Each conductor in cord
should have 100% electrical continuity even when
cord is flexed back-and-forth. Pendant Cord
Strain Relief Cable should absorb the entire load
associated with forces applied to the pendant. Replace
Pendant - Labels Visual Labels denoting functions should be legible. Replace
Warning Labels Visual Warning Labels should be affixed to the hoist (see
Section 1.2) and they should be legible. Replace
Hoist Capacity
Label Visual The label that indicates the capacity of the hoist
should be legible and securely attached to the
hoist. Replace