1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This operating instructions is a customer document of Pfeiffer Vacuum. The operating instructions de-
scribe the functions of the named product and provide the most important information for the safe use of
the device. The description is written in accordance with the valid directives. The information in this op-
erating instructions refers to the product's current development status. The document shall remain valid
provided that the customer does not make any changes to the product.
1.1.1 Applicable documents
Document
Number
Additional information for "M Version"
PW 0142
Supplementary Information for Roots pumps with special overflow
valves
PW 0022
Spray lance operating instructions
PW 0332
Declaration of conformity
A component of these in-
structions
You can find these documents in the
Pfeiffer Vacuum Download Center
.
1.1.2 Variants
These instructions apply for roots pumps of the following versions:
Pump type
Pump designs
Standard ver-
sion
Standard version:
● Standard motor
● The housing and all parts forming the suction chamber consist of GG and GGG
● Connection flanges are designed as ISO flanges
● Overflow valve for protection against thermal overload
M version
Changes to the standard design:
● Version with magnetic coupling
Special ver-
sions
● Blocked overflow valve or changed differential pressure at the overflow valve
● Special sealing materials resistant to aggressive media
● Special coatings for corrosion protection or anti-stick properties
● Version with PN flanges
● Special, process-specific lubricants
1.2 Target group
These operating instructions are aimed at all persons performing the following activities on the product:
● Transportation
● Setup (Installation)
● Usage and operation
● Decommissioning
● Maintenance and cleaning
● Storage or disposal
The work described in this document is only permitted to be performed by persons with the appropriate
technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac-
uum.
About this manual
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