1
2
3
4
5
Fig. 1:
Position of the labels on the product
1
Hot surface warning sign
4
Fill lubricant note
2
Rating plate
5
Direction of rotation arrow (cast in pump housing)
3
D1 lubricant note
1.3.4 Abbreviations
Abbreviation
Explanation
Okta "G"
Gas circulation cooled roots pump
WAF
width across flats
E
Clearance between both coupling halves
RSSR
Radial shaft seal ring
AFS
Axial face seal
GGG
Spheroidal graphite cast iron
FPM
Fluoropolymer rubber
PE
Earthed conductor (protective earth)
PN
Nominal pressure stage (pressure nominal)
ANSI
American National Standards Institute
ISO
International Organization for Standardization
DIN
German Institute for Standardization (Deutsches Institut für Normung)
f
Rotation speed value of a vacuum pump (frequency, in rpm or Hz)
OI
Operating instructions
SI
Service instructions
Tbl. 2:
Abbreviations used
About this manual
9/56
