Duerkopp Adler 669 Instruction Manual page 35

2
Maintenance required
Sewing drive
Clean the motor ventilation
sieve 2 (you can use
compressed air)
Check condition and tension
on the V-belt 1
Pneumatic System
Check the water level in the
pressure regulator.
Clean the filter insert.
Check the system for leaks.
1
Explanation Operational
Clean dust and residual thread from the
air-entry points
You should be able to press down with your
finger on the V-belt so that the belt moves
about 10 mm down
The water level must not rise as far as filter
insert 3.
- After screwing in drain screw 5 blow out
the water from the water separator 4
under pressure.
The filter insert 3 is used to filter out dirt
and condensation.
- Separate the machine from the
compressed air supply.
- Unscrew blow-out screw 5.
There must be no pressure on the
machine's pneumatic system.
- Unscrew the water separator 4.
- Unscrew the filter insert 3.
Wash out the dirty filter bowl and filter
insert with benzene (do not use a
cleaning solvent).
Then blow dry.
- Re-assemble the maintenance unit
3
4
5
interval, hours
8
160
GB
40
500
500
31