5 Conversion and maintenance
102 Festo – P.BE-MPA-EN – 1309f – English
5.3.2 Cleaning the flat plate s ilencer
Caution
Fire risk due to highly inflammable cleaning materials
• Observe the safety regulations for handling highly inflammable cleaning materials.
Caution
Health hazard
• For cleaning, do not use chlorinated hydrocarbons (CHCs), such as trichloroethylene
(TCE), but petrol or kerosene instead.
Note
Avoiding malfunctions
Dirt in the flat plate silencer can cause an increase in pressure in exha ust ducts (3)
and (5).
• Clean the flat plate silencer if it is yellow/black or has a dark colour, or replace it
with a new insert.
You can then guarantee faultless functioning of the flat plate silencer and avoid mal-
functioning of the valves.
Proceed as follows:
1. Loosen the 6 mounting screws of the flat plate silencer and remove it from the base components.
2. Clean the flat plate silencer with petrol or paraffin.
3. Check the seal between the basis component and the flat plate silencer for damage. Replace the
seal if it is damaged.
4. Fasten the flat plate silencer only with the original screws. Tighten the screws in diagonally opposite
sequence with 1.0 Nm (±10 %).
5.3.3 Replace the flat plate silencer or the exhaust plate
Proceed as follows:
1. Loosen the 6 mounting screws of the flat plate silencer or exhaust plate and remove it from the base
component.
2. Check the seal between the basis component and the surface-mounted silencer or exhaust plate for
damage. Replace the seal if it is damaged.
3. Make sure that the seal is seated correctly. This is determined by guides in the flat plate silencer or
in t he exhaust plate.
4. Fasten the flat plate silencer or exhaust plate only with the original screws. Tight en the sub-bases in
diagonally opposite seque nc e with 0.65 Nm (±10 %) or the flat plate silencer with 1.0 Nm (±10 %).
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