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| Operation Manual C 2213 | Maintenance
Fig. 14:
O-ring and membrane at membrane disc
9.1.2 Dismounting of inlet valve
For the disassembly of the inlet valves, remove the four screws. The springs in the inlet valve push it apart. If
this should not be the case, lay down the inlet valve for some time in warm water. Make sure to remove the
manometer before you do this! In order to simplify the dismounting, the ball guide and seat holder have an M5
internal thread. The felt filter can be pushed out through the cylinder connection using a thin screw driver or
wire.
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Fig. 15: Inlet valve of C 2213
*): The articles are included in the maintenance kit (see „Maintenance kits“ on page 38).
Remove the pressure gauge with a suitable open-end spanner and inspect its condition optically. Deposits in
the drilling hole can be removed for example with a dry cotton bud. Do not use water!
ATTENTION!
The opening at the pressure gauge has to be sealed airtight immediately in order to prevent moisture from
causing corrosion.
NOTICE!
The manometer has to be changed after 5 years.
