To determine if load chain should be continued in
service, check wear, pitch and gauge lengths.Chain
worn beyond length indicated, nicked, gouged or
twisted should be replaced before returning Chain
Block to service.
Chain should be clean, free of twists and pulled taut
before measuring. For gauge limits please contact GT
for more information.
Note that worn chain can be an indication of worn
Chain Block components. For this reason, the Chain
Block’s chain guide roller and lift wheel should be
examined for wear and replaced as necessary when
replacing worn chain. Also load chains are specially
heat treated and hardened and should never be
repaired.
Using other than GT Viper supplied load chain may
cause the chain to jam in the Chain Block and/or allow
the chain to break and the load to drop.
To Avoid Injury
Due to the size requirements and physical properties,
use only GT Viper Grade 80 Load Chain in GT Viperk
Chain Blocks.
Important:
Do not use replaced chain for other
purposes such as lifting or pulling. Load chain may
break suddenly without visual deformation. For this
reason, cut replaced chain into short lengths to
prevent use after disposal. Before returning chain
to service or after replacing a load chain, lubricate
liberally with chain oil or equal lubricant. Remove
excess lubricant from the chain by wiping with a cloth.
Hand Chain
Hand Chain should be cleaned, inspected and gauged
in the same manner as load chain. As received from
the factory, the hand chain may contain an unwelded
link. This link can be placed in a vice and twisted
open to facilitate changing chain length. Please note
that opening and closing of the connecting link more
than twice is not recommended. Also, connecting
links must not be made by cutting the weld side of
a standard hand chain link. Hand chain should be
assembled to hand wheel free from twists with weld
on vertical link facing inwards towards hand wheel
and weld on horizontal link facing towards the hand
wheel side plate. Care must be taken to ensure that
there is no twist in the hand chain loop.
Lubrication
Lubricate load chain with a light coat of chain oil or
equal lubricant.Be sure the lubricant reaches the
bearing surfaces between the links. Remove excess oil
from the chain.
Used motor oil contain unknown carcinogenic
materials.
10
10
10
Chain Block
Rated Load
0.5t
1
1.5t
2t
3t (Single Fall)
3t (Double Fall)
5t
10t
20t
30t
Hand Chain
5
6
7.1
8
10
7.1
10
10
5
Chain Stock
Diameter (mm)
Maintenance
HOISTS
A5 Viper Chain Block Manual V2.indd 10
04/03/2014 07:33
