WBV.PU.002.EN VX136Q V2.0
8.2 Draining and cleaning the buffer chamber
Draining and cleaning the buffer chamber
• If the cartridge mechanical seal is defective, drain and clean the buffer chamber.
• Before changing a cartridge mechanical seal, drain the buffer chamber and clean it if it is
contaminated severely.
Procedure
Chap. “Buffer chamber”
1. In case of buffer chamber assemblies with a pressurisable buffer fluid tank or pressure valve,
depressurise the buffer chamber before draining or cleaning.
2. Remove the buffer chamber assemblies.
3. Undo the lower screw plug (1) Fig. “Filling/draining the buffer chamber” or Fig. “Pump with
quenching fluid tank” and drain the buffer or quenching fluid from the buffer chamber.
4. If there is severe contamination, clean the buffer chamber.
5. Screw the lower screw plug back in (tightening torque: 60 Nm) and install the various buffer chamber
assemblies in reverse sequence.
If the lower screw plug is not accessible due to the installation position, a drain pipe can be installed at
the side on request.
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