Ingersoll-Rand MHP3238, Информация по техническому обслуживанию продукции

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Only allow
Ingersoll Rand
trained technicians to perform maintenance on this product. For additional information contact
Ingersoll Rand
factory or nearest
Distributor.
For additional supporting documentation refer to Table 1 ‘Product Information Manuals’ on page 2.
Manuals can be downloaded from http://www.ingersollrandproducts.com.
The use of other than genuine Ingersoll Rand replacement parts may result in safety hazards, decreased performance and increased maintenance and will invalidate all
warranties.
Original instructions are in English. Other languages are a translation of the original instructions.
Refer all communications to the nearest Ingersoll Rand Office or Distributor.
Table 1: Product Information Manuals
Publication Part/Document Number Publication
Part/Document
Number
Product Safety Information Manual MHD56295 Product Information Manual 47112677
Product Parts Information Manual 47112669
OPERATIONAL CONDITIONS, INSPECTION AND REPAIRS
n
State of Loading
When considering maintenance intervals and operational life it is necessary to
consider the conditions of service to which the hoist is subjected. The following
factors influence mechanical performance of the hoist, and should be considered in
the course of determining service intervals and product life-cycle. These include:
- Operational Time: Actual running time (determine by when the chain is actually
in motion) of hoist per hour or per work period.
- Load Distribution: Actual distribution or proportion of full or partial loads to be
handled by equipment.
- Work Distribution: Work may be concentrated during a short span, or uniformly
distributed over a work period. Work distribution is not a principle factor when
determining mechanical wear, but needs to be considered when calculating
operational time and periodic maintenance.
- Environmental Conditions: When protected from weathering, the hoist is
suitable for permanent installation in outdoor locations, although maintenance may
be increased. The MLK series hoist is not designed for permanent installation in
outdoor marine environments.
n
Load Factor
Some hoist installations, such as assembly line operation, lifted load is repetitive and
easily recorded. Other the load is random and not easily characterized. The Mean
Effective Load Factor, also referred to as the Load Spectrum, refers to a theoretical
single load value that has the same effect on the hoist as various loads lifted by the
hoist during a specified time period. The mean effective load factor, LF, can be
expressed as:
Where:
... LF W P W P W P W P
1
3
1 2
3
2 2
3
3
3
n n
3
= + + +
LF = Mean Effective Load Factor (Load Spectrum): Mean effective load factor is
the ratio of mean effective load to rated load.
W = Load Magnitude: Load Magnitude is the ratio of the hoist operating load to
the hoist rated capacity. No load operation must be included in this calculation. It is
also necessary to take into account the weight of any dead load used to facilitate
rigging the load to the hoist hook.
P = Load Probability: Load probability is the ration of running time under each load
magnitude to the total hoist running time. The sum of all of load probabilities used
in the above equation must equal 1.0
NOTICE
• Randomly distributed loads - A unit subjected to a random distribution of
loading will be assumed to lift load distributed evenly within the rated load
of the hoist in decreasing step of 20% of the previous load value. For the
purposes of maintenance, such units should be assumed to have a mean
effective load factor of 0.65.
n
Periodic Inspection
Refer to Table 2 ‘Inspection Classifications’ on page 2 for suggested inspection
classifications for Periodic Inspection Intervals. Select conditions most appropriate
to application.
Table 2: Inspection Classifications
Conditions Usage Load Characterization
Normal < = 25% duty cycle Regular
Heavy > 25% duty cycle
Usually medium loads,
frequent max. loads
Severe
Loads normally less than 50% of rated load with
running time up to continuous; or, Loads normally
above 50% of rated load with running time up to 50%
of work period.
Maintain written records of periodic inspections to provide an accumulative basis
for continuing evaluation. Inspect all items listed in ‘Frequent Inspection‘ in the
Product Information Manual. Also inspect the following at the suggested intervals
recommended in Table 5 “Periodic Maintenance/Inspection Interval”Table 6
‘Periodic Maintenance/Inspection Interval’ on page 3 .
According to ASME B30.16, frequency of periodic inspection depends on the severity
of usage:
Table 3:
NORMAL HEAVY SEVERE
Yearly Semi-Annually Quarterly
Disassembly may be required for HEAVY or SEVERE usage.
Inspect all the items in “Frequent Inspection” given in the Product Information
Manual. Also inspect the following:
1. FASTENERS. Check all rivets, split pins, capscrews and nuts. Replace if missing
or tighten if loose.
2. ALL COMPONENTS. Inspect for wear, damage, distortion, deformation and
cleanliness. If external evidence indicates the need, disassemble. Check gears,
shafts, bearings, sheaves, chain guides, springs and covers. Replace worn or
damaged parts. Clean, lubricate and reassemble.
3.
HOOKS. Inspect hooks carefully for cracks using magnetic particle or other
suitable non-destructive method. Inspect hook retaining parts. Tighten or repair,
if necessary.
4. LOAD CHAIN WHEEL. Check for damage or excessive wear. Replace if necessary.
Observe the action of the load chain feeding through the hoist. Do not operate
a hoist unless the load chain feeds through the hoist and hook block smoothly
and without audible clicking or other evidence of binding or malfunctioning.
5. MOTOR. If performance is poor, disassemble the motor and check for wear or
damage to bearings and shafts. The parts should be cleaned, lubricated and
reassembled. Replace worn or damaged parts.
6. BRAKE. Raise a load equal to the rated capacity of the hoist a few inches (cms)
off the floor. Verify hoist holds the load without drift. If drift occurs, disassemble.
Remove brake discs as described in the “MAINTENANCE” section. Check and
clean the brake parts each time the hoist is disassembled. Replace the brake discs
if the thickness is less than 0.090 in. (2.29 mm).
7. SUPPORTING STRUCTURE. Check for distortion, wear and continued ability to
support load.
8. TROLLEY. (if equipped) Check that the trolley wheels track the beam properly
and clearance between side rollers and beam is correct, 1/16 to 3/16 in. (1.6 to
4.7mm). Check that wheels and rail are not excessively worn and inspect side
plates for spreading due to bending. Do not operate the hoist until the problem
has been determined and corrected.
9. LABELS AND TAGS. Check for presence and legibility. Replace if necessary.
10. LOAD CHAIN END ANCHORS. Ensure both ends of load chain are securely
attached. Secure if loose, repair if damaged, replace if missing. Check chain
stopper is correctly installed and functional.
11. LOAD CHAIN. Measure the chain for stretching by suspending a 50 to 100 lbs.
(23 to 45 kg) load from the hoist. Measure the load chain over the outside of
seven link sections all along the chain paying particular attention to the most
frequently reeved links. When any seven links in the working length reaches or
exceeds the discard length shown in Table 4 ‘Load Chain Normal and Discard
Length’ on page 2, replace the entire chain. Refer to Dwg. MHP0455
on page 3. Always use a genuine Ingersoll Rand replacement chain.
Table 4: Load Chain Normal and Discard Length
Dimensions Of Link - Inches
Number of
Links
Discard
Length
Over N
Links,
inches
Nominal
Wire
Diameter
Pitch
Inside
Width
Outside
width
1/4 0.767 0.298 0.823 7 5.98
2 Form 47099007 Edition 3