Maintena nce
WBV.PU.002.EN VX186QD V2.0
41
8
Maintenance
WARNING
Risk of injury (catching, crushing, collision) due to rotating rotary lobes if the machine starts up
unexpectedly!
Before starting maintenance and repair work (opening covers, disassembling connectors) and before
troubleshooting, switch the machine off and secure it against being switched on again.
WARNING
Risk of injury from working materials escaping under high pressure!
When the drain plugs on the gearbox and buffer chamber are loosened or the buffer fluid tank cover is
opened, working materials can spray out under high pressure.
•
Personnel must wear suitable protective clothing.
•
Before carrying out maintenance and repair work, release the buffer chamber pressure.
•
To protect against fluids spraying out, carefully and slowly open the buffer chamber, the bearing cover
on the QD cover and the gearbox. Cover the valves or screws to be removed with a cloth or similar
item where appropriate.
8.1
Buffer chamber
In the following chapters, we describe the following possible
buffer chamber assemblies:
1
Chapter
"Pressurisable buffer fluid tank"
2
Chapter
"Depressurised quenching fluid tank"
3
Chapter
"Pressure valve"
4
Chapter
"Plugs"
Buffer chamber assemblies act to improve control of the pump shaft seal. The fluid level and the set
pressure can be monitored, depending on the design.
Electronic buffer chamber monitoring is also possible. Ask us for more information.
If your pump is equipped with a dry buffer chamber or a circulation system, please read the corresponding
Chapter "
"Dry buffer chamber" sealing system" or "Circulation system on the cartridge mechanical seal".
