Lodestar CM Hoist, Руководство по эксплуатации

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10. DO NOT allow the load to bear against the hook latch. The
latch is to help maintain the hook in position while the
chain is slack before taking up slack chain.
11. Take up a slack load chain carefully and start load easily
to avoid shock and jerking of hoist load chain. If there is
any evidence of overloading, immediately lower the load
and remove the excess load.
12. D Do o n no ott allow the load to swing or twist while hoisting.
13. Never operate the hoist when flammable materials or
vapors are present. Electrical devices produce arcs or
sparks that can cause a fire or explosion.
14. S ST TA AY Y A AL LE ER RT T!! Watch what you are doing and use common
sense. Do not use the hoist when you are tired, distracted
or under the influence of drugs, alcohol or medication
causing dimished control.
PROCEDURES
To maintain continuous and satisfactory operation, a regular
inspection procedure must be initiated to replace worn or
damaged parts before they become unsafe. Inspection inter-
vals must be determined by the individual application and are
based on the type of service to which the hoist will be sub-
jected and the degree of exposure to wear, deterioration or
malfunction of the critical components.
The type of service which the hoist is subjected can be clas-
sified as “
NORMAL ,” “ HEAVY ,” “ SEVERE .”
NORMAL SERVICE: Involves operation with randomly dis-
tributed loads within the rated load limit, or uniform loads
less than 65 percent of rated load for not more than 25
percent of the time.
HEAVY SERVICE: Involves operating the hoist within the
rated load limit which exceeds normal service.
SEVERE SERVICE: Is normal or heavy service with
abnormal operating conditions.
Two classes of inspection,
FREQUENT
and
PERIODIC
, must
be performed.
FREQUENT INSPECTIONS: These inspections are visual
examinations by the operator or other designated person-
nel. Records of such inspections are not required. The fre-
quent 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 in Table 4.
PERIODIC INSPECTIONS: These inspections are visual
inspections of external conditions by an appointed person.
Records of periodic inspections are to be kept for continu-
ing 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 in Table
5.
L L
!!
WARNING
Allowing the load to bear against the hook latch and/or hook
tip can result in loss of load.
TO AVOID INJURY:
Do not allow the load to bear against the hook latch and/or
hook tip. Apply load to hook bowl or saddle only.
12
CAUTION: Any deficiencies are to be corrected
before the hoist is returned to service. Also, the
external conditions may show the need for disas-
sembly to permit a more detailed inspection, which,
in turn, may require the use of non-destructive 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 contin-
ued safe use. The program should include periodic and fre-
quent inspections with particular attention being paid to the
lubrication of the various components using the recommend-
ed lubricants (see page 15).
Hook Inspection
Hooks damaged from chemicals, deformations or cracks, or
that have more than a 10° twist from the hook’s unbent
plane or excessive opening or seat wear must be replaced.
Also, hooks that are opened and allow the latch to not
engage the tip, must be replaced. Any hook that is twisted
or has excessive throat opening indicates abuse or over-
loading of the unit. Inspect other load sustaining parts for
damage.
On latch type hooks, check to make sure that the latch is
not damaged or bent and that it operates properly with suf-
ficient spring pressure to keep the latch tightly against the
tip of the hook and allow the latch to spring back to the tip
when released. If the latch does not operate properly, it
should be replaced. See Figure 14 to determine when the
hook must be replaced.
INSPECTION