87
8012426/YWL2/3-0/2016-08| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100
Subject to change without notice
MAINTENANCE
5
5.2.3
Checking and cleaning the non-return valve
▸
Loosen the strap retainer and pull the purge air hose off the non-return valve.
▸
Loosen the strap retainer
and the securing screw
on the non-return valve and
remove them from the purge air connection of the sender/receiver unit.
▸
Unscrew the non-return valve
.
▸
Check tappet (
) for free movement.
▸
Check seal (
) and other parts for damage, check metal parts for corrosion. If parts are
damaged, exchange the complete non-return valve for a new one.
▸
Check sealing surfaces (
) and through-holes (
) for contamination, clean as
required.
▸
Reassemble non-return valve
, mount on the purge air connection and connect purge
air hose.
Fig. 55: Non-return valve, dismantled
