a Marked R for clockwise screw profile, L for counter-clockwise
screw profile
b Example for quality symbol describing the material, see data
sheet.
NOTE!
A pair of screw rotors consists of one rotor with a counter-clock-
wise screw profile and one with a clockwise screw profile.
The removable lobe tips are also configured accordingly for
clockwise and counter-clockwise screw rotors and marked with R
(clockwise) or L (counter-clockwise) [a].
Personnel:
n
Mechanics
Protective equipment:
n
Occupational safety clothing, chemical
resistant
n
Safety shoes
n
Safety gloves, chemical-resistant
n
Safety goggles
Special tool:
n
T
orque wrench
n
Slide hammer
— Read and follow the safety instructions detailed in
Ä
Chapter
2.12 “Safety instructions for maintenance and rectifying mal-
functions” on page 30.
— Shut down the Börger machine and downstream and upstream
system components as described in
Ä
Chapter 5.3 “Down-
times” on page 93.
— Secure the Börger machine against unauthorized or uncon-
trolled reactivation as described in
Ä
Chapter 2.7 “Securing the
machine against restart” on page 24
Maintenance and Repairs
BA-Classic FL_en-US, 03.05.2018www.boerger.de / www.boerger.com138
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