Festo MPA-FB Series, Manual

Page: 102 / 168

5. Diagnosis and error treatment
5−6
Festo P.BE−MPA−EN en 0502b
5.3 Servicing the MPA valve terminal
5.3.1 Cleaning the large surface−mounted silencer
Caution
Dirt in the large surface−mounted silencer can cause an
increase in pressure in exhaust channels 3 and 5.
·
Clean the silencer insert if it is yellow/black or a dark
colour, or replace it by a new insert.
·
Do not use TRI for cleaning, but benzine or paraffin.
·
Observe the safety regulations for handling easily in
flammable cleaning agents.
In this way you can ensure that the large surface−mounted
silencer functions correctly and that the valves operate
correctly.
Proceed as follows:
1. Loosen the 6 fastening screws of the surface mounted
silencer and remove it from the basis components.
2. Clean the surface mounted silencer with benzine or paraf
fin.
3. Check the seal between the basis component and the
surface mounted silencer for damage. Replace the seal if
it is damaged.
4. Fasten the silencer only with the original screws. Tighten
the screws in diagonally opposite sequence
with 1.0 Nm.