Harrington Hoists and Cranes MR Trolley - (MR2) - Manual (Page 41)

Table 5-3 Trolley Inspection Methods and Criteria
Item Method Criteria Action
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 energization of circuits for opposing
motions (e.g. 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 all of the load associated with
forces applied to the pendant. Replace.
Electrical Plugs,
Sockets and Fittings Visual Electrical Plugs, Sockets and Fittings should not
be cracked or damaged. Repair or replace
as necessary.
Cable Hangers Visual Cable Hangers should not be damaged or
significantly worn. Movement should be smooth
and should not cause the Power Supply Cable to
twist or kink. Repair or replace
as necessary.
Pendant - Labels Visual Labels denoting functions should be legible. Replace.
Warning Labels Visual Warning Labels should be affixed to the pendant
cord (see Section 1.2) and they should be legible. Replace.
Trolley Capacity
Label Visual The label that indicates the capacity of the trolley
should be legible and securely attached to the
trolley. Replace.
Nameplates Visual The nameplates that indicate the trolley model,
speed and motor data should be legible and
securely attached to the trolley. Replace
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