Page 9
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. ANSI
B30.16, Safety Standard for Overhead Hoists, provides
guidelines for hoist operation and inspection.
SECTION IV - INSPECTION
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 wire rope for wear, twist, distortion or kinks.
Any unsafe condition disclosed by any inspection must be
corrected before operation of the hoist is resumed.
CAUTION
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 (paragraph 4-4).
g. Inspect the entire length of wire rope for deficiencies. See
WIRE ROPE 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.
For more information contact: Sievert Crane and Hoist, (708) 771-1600, [email protected], www.sievertcrane.com
