Coffing Hoists EC Series, Руководство по эксплуатации, техническому обслуживанию и каталог запасных частей

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P/N EC680-7 April 2017
Order # 5041558-0 & 5041679-0
SECTION IV INSPECTION
4-1. GENERAL
A scheduled inspection routine should be established for this hoist
based upon severity of use and environmental conditions. Some
inspections should be made frequently (daily to monthly) and others
periodically (monthly to yearly). It is suggested that an Inspection
and Maintenance Check List and an Inspector’s Report similar to
those shown in Figures 4-1 and 4-2 be used and filed for reference.
All inspections should be made by a designated inspector. Special
inspections should be made after any significant repairs or any
situation causing suspicion that the hoist may have been damaged.
Any hoist which has been removed from service for an extended
time should receive an inspection as described under Periodic
Inspections. ASME B30.16, Safety Standard for Overhead Hoists,
provides guidelines for hoist operation and inspection.
Any unsafe condition disclosed by any inspection must be
corrected before operation of the hoist is resumed.
4-2. FREQUENT INSPECTION
a. Check pushbutton station, brake and limit switches for proper
operation.
b. Check hooks for deformation, chemical damage or cracks.
Bent hooks or hooks damaged from chemicals, deformation,
cracks or having excessive throat opening (see paragraph 4-6)
should be replaced. Visible deformation of any hook may be
evidence of hoist abuse and overloading and indicates that a
thorough inspection of the complete hoist should be made.
c. Check that bottom hook swivels freely.
d. Check for missing, bent or otherwise damaged hook latches.
e. Check pushbutton and power cord for cuts or other damage.
f. Check load chain for adequate lubrication, as well as for signs
of excessive wear or stretch, cracked, damaged or twisted
links, corrosion or foreign substance.
4-3. PERIODIC INSPECTION
The exact period for the following inspections will depend on the
anticipated severity of hoist use. Determination of this period should
be based on the user’s experience. It is recommended that the user
begin with a monthly inspection and extend the periods to quarterly,
semiannually, or annually, based on his monthly inspection experience.
a. Clean hoist of any dirt or foreign material. Inspect bottom block
for accumulation of debris.
b. Perform all frequent inspections listed above.
c. Check for loose bolts, screws and nuts.
d. Check housings, load block, and other parts for wear,
corrosion, cracks or distortion. Check for abnormal openings
between housing sections.
e. Check motor brake for worn discs, oil contamination or
excessive clearance (see paragraph 5-3).
f. Check mechanical load brake function (see Figure 4-3).
g. Inspect the entire length of chain for gouges, nicks,
weld spatter, corrosion, distortion and wear. See CHAIN
INSPECTION, paragraph 4-5.
h. Inspect hooks and suspension parts for cracks, distortion or
extreme wear.
i. Inspect hooks for cracks using magnetic particle, dye penetrant
or other crack detecting methods.
j. Check limit switch set points and reset if necessary (see
paragraph 5-2).
k. Inspect all wiring for defective insulation, and check to be
sure all electrical connections are tight. Check motor reversing
contactor or relay for burned contacts.
l. Inspect for oil leaks. Check oil level.
m. Inspect for missing or illegible capacity or warning labels.
n. Inspect the supporting structure for continued ability to support
the hoist rated load.