Servicing the vacuum pump
1. Disconnect the vacuum pump from the voltage supply.
2. Secure the motor against reactivation.
3. For maintenance work, only dismantle the vacuum pump to the extend needed.
4. Clean the suction chamber, diaphragms and valves.
5. Examine the diaphragms and valves for cracks at the latest when the pressure values achieved
decrease.
9.2 Checklist for inspection and maintenance
Notes on maintenance intervals
Depending on the process, the required maintenance intervals may be shorter than the ref-
erence values specified in the table.
● Consult with Pfeiffer Vacuum Service about shorter maintenance intervals for extreme
loads or for specific processes.
We recommend that Pfeiffer Vacuum Service (PV) carry out maintenance work at
Maintenance Lev-
el 2
. If the required intervals listed below are exceeded, or if maintenance work is carried out improper-
ly, no warranty or liability claims are accepted on the part of Pfeiffer Vacuum. This also applies if original
spare parts are not used.
Action
Inspection
Maintenance level 2
Required ma-
terial
Interval
daily as required;
at least once
every six
months
as required;
after 15000
hours at the
latest
as required;
at least every
2 years
Check silencer for
contamination
■
Clean the vacuum
pump
Change the dia-
phragms and valves
■
Overhaul kit
Change silencer
■
Tbl. 17:
Maintenance intervals
9.3 Change the diaphragms and valves
NOTICE
Property damage from incorrect installation
Changed dead volume due to incorrect installation of the original spacer disks worsens the final vac-
uum or leads to bearing damage.
► During disassembly, keep the existing spacer disks separate per installation location.
► Reinstall the same number of original spacer disks per diaphragm head.
9.3.1 Dismantle the diaphragm head and valves
Required tools
● Open-end wrench,
WAF 14
● Crosshead screwdriver
Maintenance
38/52
