(C) Limit switch
A
Warning
It should be inspected by qualified electrician.
Check whether the limit switch operates normally. After clearing, make it covered with a thin layer of
lubrication to ensure the normal operation.
(3)Annual overhaul
A
Warning
The annual maintenance should be performed by
original manufacturer or distributor.
(a) To check whether the locking of gear is excessive worn or damaged.
(b) Replace the oil gearbox thoroughly.
(c) After the above-mentioned checking and machine reassembling, to lift up and down with the
weights several times before normal operation. If it is in good condition, then restart the operation.
Specification of chain bag
Serial number
Chain specifications
Chain length(m)
Size of chain bag(mm)
Material
of chain bag
8#
¢
6.3
<6
150
X
150
X
350
canvas
8#
¢
7.1
<8.8
150
X
150
X
350
canvas
12#
¢
10.0,
¢
11.2
<10
215
X
215
X
410
canvas
14#
¢
10.0,
¢
11.2
10-20
215
X
215
X
500
canvas
Other
¢
6.3,
¢
7.1
>20
I
Steel
¢
10.0,¢
11.2
IIIDI
Chain gauge--to regularly measure the wearing and elongation
(1) It is convenient to measure with chain gauge provided by the manufacturer.
(2) As shown in Fig.6.3 and Fig.6.4, measure the chain internodal distance and diameter with
the chain gauge.
(3) Every link should be measured, and it must be replaced with a new one if any of the links is
found to be abnormal.
(4) The application of a worn, distorted, or extended chain may result in chain breakdown.
(5) The replacement of the chain should be entrusted to a service station or a special agent
manufacturer. Never replace it by yourself.
(6) The chain must be replaced in a whole, no partial replacement is allowed.
(7) If it is the second time to replace chain, the chain transmission core shaft, adjuster, guide
wheel should be replaced at the same time.
Remarks
(1) The chain should be free of scar and pitting caused by collision.
(2) There should be no foreign objects ( such as iron, aluminum scrap)
OK
NO
Fig.6.3 Measure of internodal distance
Fig.6.4 Measure of diameter
..
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