WBV.PU.002.EN VX136Q V2.0
12 Maintenance plan
12.1 Maintenance instructions
Carefully observe the following maintenance instructions and, if applicable, document them in the service
plan Chap. "Service plan“.
Safety devices must be checked on a regular basis to ensure that they are functioning correctly, especially
after maintenance and repair work and before start-up.
Observe and comply with the maintenance instructions in the relevant documents Chap. "Relevant
documents".
Change the buffer or quenching fluid if it is severely contaminated.
If the machine’s running noise changes or if vibrations occur Chap. "Troubleshooting".
To avoid the adhesion of the mechanical seal rings’ sealing surfaces, the shaft on new pumps with a
mechanical seal with SiC-SiC material combination that are not put into operation immediately needs to
be turned (at least one revolution) about every two months.
12.2 Maintenance intervals
Carefully observe the following maintenance intervals and document them in the service plan Chap.
"Service plan".
Before start-up:
Check pump/motor (coupling) orientation (base C)
Before start-up and before and after long periods of shutdown:
Lubricate grease nipples
After the first 20 operating hours:
• Retighten the bolts and screws fastening the pump connectors
• Retighten the bolts and nuts securing the machine (without base)
• Retighten the bolts and nuts fastening the motor and the machine on the base
• Check fixed coupling of coupling guard (base C)
• Check the buffer or quenching fluid
• Change the gear oil
Every 200 operating hours:
Check the buffer or quenching fluid
Every 500 operating hours, at least once every three months:
Check the gear oil
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