Yale BATTERY STAR Notice D'instructions page 12

The type of service to which the hoist is subjected can be classified
as "Normal", "Heavy", or "Severe".
Normal Service
Involves operation with randomly distributed loads within the rated
load limit, or uniform loads less than 65% of rated load for not more
than 25% of the time.
Heavy Service
Involves operating the hoist within the rated load limit which exceeds
normal service.
Severe Service
Normal or heavy service with abnormal operating conditions or
constant exposure to the elements of nature.
Two classes of inspection - frequent and periodic - must be
performed.
Frequent Inspections
These inspections are visual examinations by the operator or other
designated personnel. Records of such inspections are not required.
The frequent inspections are to be performed monthly for normal
service, weekly to monthly for heavy service, and daily to weekly
for severe service, and they should include those items listed, see
"Table 3: Minimum Frequent Inspections", page 13.
Periodic Inspections
These inspections are visual inspections of external conditions by an
appointed person. Records of periodic inspections are to be kept for
continuing evaluation of the condition of the hoist.
Periodic inspections are to be performed yearly for normal service,
semi-annually for heavy service and quarterly for severe service, and
they are to include those items listed, see "Table 4: Minimum Periodic
Inspections", page 13.
CAUTION
Any deficiencies found during inspections are to be
corrected before the hoist is returned to service. Also, the
external conditions may show the need for disassembly
to permit a more detailed inspection, which, in turn,
may require the use of nondestructive-type testing.
PREVENTIVE MAINTENANCE
In addition to the above inspection procedure, a preventive
maintenance program should be established to prolong the useful
life of the hoist and maintain its reliability and continued safe use.
The program should include the periodic and frequent inspections
with particular attention being paid to the lubrication of the various
components using the recommended lubricants.
SUSPENSION INSPECTION CRITERIA
1. Ensure the suspension pin retainer (1) is free from cracks and
defects and that the screw is present and tight.
If reinstalling the retaining screw:
1. Ensure the threads are clean and dry.
2. Apply medium strength threadlocker to the retainer screw (2).
BatteryStar
TM
Figure 7. Suspension Pin Retainer/Retainer Screw
1
Suspension Pin Retainer
HOOK REMOVAL CRITERIA
Hooks shall be removed from service if damage such as the following
is visible, and shall only be returned to service when approved by a
qualified person:
a) Missing or illegible rated load identification, or illegible hook
manufacturer's identification, or secondary manufacturer's
identification.
b) Excessive pitting or corrosion.
c) Cracks, nicks, or gouges.
d) Wear – any wear exceeding 5% of the original section dimension
of the hook, or its load pin.
e) Deformation – any visibly apparent bend, or twist from the plane
of the unbent hook.
f) Throat opening – any distortion causing an increase in the throat
opening of 10%.
g) Inability to lock – any self-locking hook that does not lock.
h) Inoperative latch – any damaged latch, or malfunctioning latch
that does not close the hook's throat.
i) Thread wear, damage, or corrosion.
j) Evidence of excessive heat exposure, or unauthorized welding.
k) Evidence of unauthorized alterations such as drilling, machining,
grinding, or other modifications.
Figure 8. Hook Removal Criteria
12
2
Retainer Screw
P/N: 192097707YLEM June 2024