24
Maintenance
Checklist for inspec-
tion, maintenance
and overhaul
Certain maintenance and overhaul work should only be performed by Pfeiffer Vacuum
Service (PV). Pfeiffer Vacuum will be released from all warranty and liability claims if the
required, below listed, intervals are exceeded or maintenance or overhaul procedures
are not performed properly. This also applies if replacement parts other than Pfeiffer Vac-
uum OEM replacement parts are used.
Activity
daily as required; at
least annually
as required; at
least every 1.5
years
as required; at
least every 3
years
Check lubricant levels and colour of gear oil X
Check lubricant levels of sealing oil
X
Visual inspection (leak-tightness/oil leaks)
X
Check for noises (smoothness of operation
and overflow valve)
X
Change lubricants and sealing oil*
X
Cleaning and checking of the overflow valve
X
Replace O-rings on lubricant filler screws
and drain screws
X
Clean suction chambers
X
Replacement of coupling buffer (toothed
ring) at pumps with crown gear coupling
X
Replacement of the radial shaft seals, pro-
tective bushing and seals
X (PV)
Clean gear chambers and replacing the cov-
er gaskets
X (PV)
Replacement of piston bearings; 4 piston
bearings (ball bearing/roller bearing)
X (PV)
Overhaul of the overflow valve
X (PV)
Depending on the process, the required replacement intervals for lubricants and the intervals for inspection,
maintenance and overhaul may be shorter than the guide values specified in the table. Consult with Pfeiffer
Vacuum Service, if necessary.
NOTICE
Service work should be carried out by a qualified person only!
Pfeiffer Vacuum is not liable for any damage to the pump resulting from work carried out
improperly.
Take advantage of our service training programs; additional information at www.pfei-
ffer-vacuum.com.
Please state all the information on the pump rating plate when ordering spare parts.