Page 9
INSPECTION
The crane should be inspected at the beginning of each
shift. All functional mechanisms should be in good working
order. Check limit switches, brakes, electrical equipment,
and other SAFETY devices. Check crane operation without
load. Any unusual sounds, vibrations, anything wrong or
apparently wrong should be reported to the operators’
supervisor immediately. Inspect hoist as recommended in
manufacture’s hoist manual.
Do not operate a crane, hoist or traverse having
unusual vibrations, sounds, warnings or with
anything wrong or apparently wrong. Danger
may be present that the crane operator cannot
see. Determine and correct cause of unusual
conditions and make certain the crane can be
operated SAFELY.
Complete inspection of the crane is to be performed at
least every six months and more frequently when
conditions require. Inspect areas listed below and any
other area which may be adversely affected due to activity,
severity of service and crane environment that could cause
unsafe crane operation.
Always lock main switch in open (power off)
position before inspection.
Items to be inspected include, but are not limited to:
1.
All functional operating mechanisms for maladjustment
interfering with crane operation.
2.
Operating parts for excessive wear.
3.
All safety devices for malfunction.
4.
All connections and mountings for loose bolts, nuts or
other fasteners for tightness.
5.
All structural members for deformation, cracks,
corrosion.
6.
All electrical apparatus, including control contactors,
limit switches, push button stations for signs of pitted
contact points, wear or deteriorations.
7.
All hoists and traverses installed on the crane in
accordance with manufacture's recommendations.
Written, dated and signed inspection reports should be
maintained on all critical items (such as safety devices,
brakes, hooks, ropes, chains, etc.). All worn, damaged or
malfunctioning parts should be repaired or replaced to
maintain a SAFE operating crane. Warning labels affixed
to the crane, hoist or traverse should be kept clean and
visible at all times. Warning labels should be replaced if
loose or illegible. A typical inspection Schedule and
Maintenance Report Form is shown on Page 10.
During this test and under any other operating
condition – OPERATOR SHOULD NEVER BE
POSITIONED UNDER THE HOOK OR LOAD.
NOTE: Jogging is used excessively by some
operators for making “inching” crane movements.
AVOID EXCESSIVE USE OF JOGGING SINCE
IT MAY CAUSE PREMATURE BURNING OF
CONTACT TIPS AND MOTOR OVERHEATING.
THIS EQUIPMENT IS NOT DESIGNED OR
SUITABLE AS A POWER SOURCE FOR LIFTING
OR LOWERING PERSONS.
OPERATING THE CONTROLS (WITH LOAD): Make
certain hook is high enough to clear any obstructions
below. Move the bridge to a position directly over the load,
and operate in the following sequence:
STEP 1: Spot the traverse and hoist over the load. If
control is suspended from the bridge, hand signals may
be required from ONE authorized floor man at the load.
Be certain load to be lifted is properly hitched and does
not exceed the rated capacity of the hoist, traverse or
bridge.
STEP 2: Slowly raise the hook until slack has been taken
out of slings. When floor man signals and operator is
satisfied load is secure in sling, he lifts the load slowly
until clear. Now, hoisting speed can be increased and
maintained until load is clear of all obstructions or floor
man gives the signal to stop.
STEP 3: Starting slowly and increasing speed as distance
permits, move the bridge toward the point where the load
is to be lowered. The stopping distance will be greater
than with no load on the hook.
STEP 4: Learn to judge the stopping distance of the
bridge and traverse, both with light loads and full loads.
This will enable you to “spot” loads with the minimum
amount of jogging.
NOTE: Refer to hoist manual for complete
operating instructions for hoist.
RESPONSIBILITY FOR SAFE OPERATION: Each crane
operator should be held directly responsible for the safe
operation of his crane. The crane operator should STOP
the crane and refuse to handle loads when:
1.
there is any doubt as to SAFETY;
2.
any unusual vibrations or sounds are noticed before
or when starting the lift or traverse motions;
3.
there are arguments or disagreements with floor man
or hitchers;
4.
he feels ill or is not alert.
WARNING
WARNING
WARNING
WARNING
Содержание Series 700
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Страница 4: ...Page 4 Figure C Electrical Enclosure and Resistor Mounting Arrangement...
Страница 5: ...Page 5 Figure D Ballast Resistor Mounting Arrangement...
Страница 16: ...Page 16 Figure 3 Motor and Gear Box...