15
6.2 Inspection
1. Daily inspection: Before starting daily operation, check the followings:
(a) Correct power supply.
(b)
“
Up
”
,
“
Down
”
and
“
Emergency Stop
”
test runs under no load.
(c) Correct motor performance.
(d) No abnormal or excessive noise.
(e) No malfunction of the bottom hook safety latch.
(f) Proper function of moving/turning parts and brake.
(g) Well-lubricated load chain.
2. Monthly inspection
(a) Load chain.
Distorted, elongated or worn chain link will not sit properly on the load sprocket
wheel and may cause chain breakage and/or damage to hoist unit. To ensure safe
and efficient operation, the chain links must be checked for their pitch (inside
length), inside width and outside width monthly according to following table.
Dia-
Meter
(m/m)
(d)
Model
Inside
Length
(m/m)
(p)
Inside
Width
(m/m)
(b1)
Outside
Width
(m/m)
(b2)
Breaking
Load
(kn)
Ø
6.3
PEH050(NH)
19.1
7.9
21.4
50
Ø
7.1
PEH100(NH)
PEH200-2(NH)
20.2
8.1
23.2
63.3
Ø
10.0
PEH200-1(NH)
PEH300-2(NH)
30.2
12.5
33.2
128
Ø
11.2
PEH500-2(NH)
34
14
37.5
160
Table 6-2-a
Measuring
(1) The chain gauge is useful and convenience for measuring.
(2) Please use a chain gauge to measure the chain pitch and diameter, per illustrations (1) and (2).
(3) Every chain ring must be measured, and the chain must be replaced when one of chain ring
is wear or stretch.
(4)It will be a cutting-out possibility if you use a chain fall either wear or stretch during
operation.
(5) Do not replace a chain fall by yourself and do please contact specific either service centers
or contractors to help you out.
(6) The chain fall must be replaced whole instead of in part.
Always use the hoist manufacture
’
s recommended parts when repairing a hoist.
CHAIN LINK
