Maintenance Unit - Duerkopp Adler 743-221 Service Manual

4.

Maintenance unit

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The maintenance unit protects the sewing machine from water and
particles of dirt in order to avoid blockages and rust formation in the
pneumatic system.
Regulation and inspection
The water level in the pressure regulator must not reach the filter.
The filter insert 1 must be cleaned every 160 hours.
Caution: danger of injury
Turn off the main switch.
Isolate the sewing machine from the compressed-air supply.
The filter may only be cleaned when the system has been
depressurised.
–
Blow the water out of the water separator under pressure.
–
Wash the filter holder and filter insert 1 with petroleum ether.
Blow the filter insert 1 clean with the compressed-air gun.
Important !
Do not use solvents to wash the filter holder and filter insert.
They destroy the filter holder.
1