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Transportation, Storage and Installation
4.5.3
Checking the flow direction
Dry run
BA-Classic FL_en-US, 03.05.2018
9.
Ensure that the supply lines to the drive are connected and
secured according to the relevant regulations.
10. Ensure that the unit is properly grounded.
11. Check that the pipe connectors are attached correctly and
do not leak (torque for the connection between Börger
machine and pipe connector according to
"Preparation for installation" on page 62).
12. Check that all screws and nuts, which may have become
loose during transportation and installation, are tight.
13. Rectify all errors determined by this check.
NOTICE!
Risk of damage due to frictional heat!
The frictional heat that develops can cause damage to the pump
components.
— A rotary lobe pump with rubber-coated rotors should not run
dry, i.e. without pumped medium, for longer than 15 sec-
onds at a normal speed under any circumstances.
— The rotary lobe pump must not be put into operation
during the following function test.
— Ensure that all valves and shut-off devices are closed.
The flow direction on Börger rotary lobe pumps can be reversed,
and is defined by the direction of rotation of the drive.
After establishing the electrical connections, check if the flow direc-
tion of the rotary lobe pump is correct by means of the direction of
rotation of the drive shaft.
Example: Standard drive with two-stage helical gear unit
View of quick-release cover:
www.boerger.de / www.boerger.com
Ä Chapter 4.4.1
View of drive with drive shaft at
the top
1)
:
83
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