6. Assembly
6.9 Lubrication line arrangement
When arranging the main lubricant lines and
lubrication point lines, observe the following
instructions in order to ensure that the en-
tire centralized lubrication system functions
smoothly.
The main lubricant line must be dimen-
sioned in accordance with the maximum
operating pressure occurring in the pump
unit used and the displacement of that pump
unit. If possible, the main lubricant line
should rise upward from the pump unit and
be ventable at the highest point on the lubri-
cation line system.
Lubricant metering devices at the end of the
main lubricant line must be installed such
that the outlets of the metering devices point
upwards. If the system configuration re-
quires that the lubricant metering devices be
arranged below the main lubricant line, they
should not be placed at the end of the main
lubricant line.
The tubes, hoses, shutoff valves, directional
control valves, fittings, etc. that will be used
must be designed for the maximum operat-
ing pressure of the pump unit, the permis-
sible temperatures, and the lubricants that
will be delivered. The lubrication line system
also needs to be protected from excessive
pressure by means of a pressure-limiting
valve.
All components of the lubrication line sys-
tem such as tubes, hoses, shutoff valves, di-
rectional control valves, fittings, etc. must be
carefully cleaned before assembly. No seals
in the lubrication line system should pro-
trude inwards in a way that disrupts the flow
of the lubricant and could allow contami-
nants to enter the lubrication line system.
Lubrication piping should always be ar-
ranged so that air pockets cannot form any-
where. Avoid changes in the cross-section
of the lubrication line from small to large
cross-sections in the direction of flow of
the lubricant. When the cross-section does
change, the transition should be gentle.
The flow of lubricant in the lubrication lines
should not be impeded by the incorporation
of sharp bends, angle valves, or flap valves.
Unavoidable changes in the cross-section in
lubrication piping must have smooth transi-
tions. Sudden changes of direction should
be avoided if possible.
Note!
For further requirements for instal-
lation, see DIN 20066.
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951-230-008-EN
Version 04
EN
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