4. Ensure that it is in the correct position and that the O-ring is posi‐
tioned correctly in the screen housing. Replace the O-ring if it is
damaged.
5. Screw the screen housing back into the pressure reducer valve
and tighten it.
6. Start the machine up again and perform a test run.
7. Ensure that all threaded unions are leak-tight; tighten them if nec‐
essary.
8.6.4 Replacing the screw conveyor
This section describes how to replace the screw conveyor. Observe
the specifications in the “Maintenance intervals” section.
(Mainte‐
nance intervals P. 8 — 2)
See also the “Disassembling the pressure flange” section
(Disassem‐
bling the pressure flange P. 8 — 12)
Use only original spare parts from the manufacturer.
1. Clamp the screw conveyor barrel and unscrew the screw convey‐
or by turning it anticlockwise.
NOTICE
Damage to the screw conveyor if the rubber of the screw conveyor
comes into contact with used oil.
▶
Use only silicone spray from the manufacturer for assembly.
2. Spray the new screw conveyor with silicone spray.
3. Screw the new screw conveyor into the clamped screw conveyor
barrel by turning it clockwise.
4. Adjust the end face of the screw conveyor and the screw convey‐
or barrel so that they are flush.
Maintenance
8 — 11
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