probst SM-1200 Operating Instructions Manual page 96

 The load securing chain must be in close
contact with the load.
12. Ensure that the load securing chain (4) is
securely attached to the base body (1).
13. Stow the chain end (4) in the chain box (4.2) so
that it does not interfere with handling.
 The load can now be transported close to the ground.
 With the safety chain attached, the load may be transported up to 1.8 m above the ground.
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