How DSN (Chain Block) works 

How DSN (Chain Block) works
STEP.01
Hang the TOP HOOK of chain block on a safe structure (lug).
STEP.02
Hang the cargo you want to pick up onto the BOTTOM HOOK of chain block.
STEP.03
Pull the hand chain in the U direction to lift the cargo.
STEP.04
When down, pull the hand chain strongly one time to release the brake and then lower it.
Caution when using DSN (Chain Block)
Release and use when load chain has been capsized or twisted

Наука