Mitsubishi Electric UM 10t, Инструкция по эксплуатации

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Monthly Inspection
The person responsible for maintenance of hoist shall check the following items directly touching
the hoist, and repair defective parts.
The time of inspection of each part shall be determined depending on importance from the
viewpoint of safety, difficulty in maintenance, frequency of uses, and wearability. The parts are
classified as shown below.
Class A
No. Check item Description
Month
Acceptability
Problem
and remedy
Date of
completion
of repair
1
Check that there are no obstacles within the
traversing range. Check that the load will not hit
against other articles.
2
Check the stoppers on both the ends of rail
for deformation and missing, and check the
mounting bolts for looseness.
3
Check the ground lead of the pushbutton
pendant metallic casing for breakage,
check the screws for looseness, and check
the pushbutton cable through holes for
abnormalities. If the metallic casing leaks, an
electrical shock can occur. Look
over the inside.
4
State of the operation buttons
Check that the interlocks are complete. Check that the buttons return to
position smoothly.
5
Check the operation of the overwinding
limit switch lever. If the pin has been dropped, the
switch lever will not function.
Check that the lever functions cor-
rectly. Check that the lever has
been properly adjusted.
6
Wire
rope
Check the strands for breakage. Less than 10% of number of
strands in one twisted wire
Check for wear. 7% or less of the nominal diameter
Check for kink, deformation, and
corrosion. Kink, deformation, and corrosion
should not be allowed.
Check the frame fixing parts, pins,
and sheaves. Stoppers, split pins, wear
Check the terminal fitting inlet for
corrosion. Insufficient lubrication, breakage,
and corrosion on the root of the
rope
7
Hook
block
Check that the thrust ball bearing
rotates smoothly. Check that the nut stopper is not
damaged.
Check that the foot nut is
provided with loosening
preventive means. Check the split pin and setscrew for
missing.
Check the sheave for damage. Check for flaws and wear of the
groove.
Check the sheave case and key
plate (nameplate) for damage and
looseness. Check the slinging
wire latch. Check the clamping screws for
looseness and damage.
Check for backlash and spring
effect.
Items to be surely checked every month and to be regarded as important items from
the viewpoint of safety.