- 34 -
EN
951-180-074-EN Version
03, last updated
2019 / 07
6. As
sembly
6.8 Lubrication line arrangement
When arranging the main lubricant lines and lubrication point lines,
observe the following instructions in order to ensure that the entire
centralized lubrication system functions smoothly.
To prevent cavitation and thus early failure of the gerotor pump unit,
ensure that the suction line is sufficiently large.
Only grounded steel tubing may be used.
The suction line and thus the suction performance should be kept
to a minimum and the admission pressure must not exceed max.
0.2 bar.
The main lubricant line must be dimensioned in accordance with the
maximum operating pressure occurring in the lubrication unit used
and the displacement of that lubrication unit. If possible, the main
lubricant line should rise upward from the gerotor pump and be
ventable at the highest point on the lubrication line system.
Lubricant feeders at the end of the main lubricant line must be in-
stalled such that the outlets of the lubricant feeders point upwards.
If the system configuration requires that the lubricant feeders be
arranged below the main lubricant line, they should not be placed at
the end of the main lubricant line.
The pipes, hoses, shutoff valves, directional control valves, fittings,
etc. that will be used must be designed for the maximum operating
pressure of the lubrication unit, the permissible temperatures, and
the lubricants that will be delivered. The lubrication line system also
needs to be protected from excessive pressure by means of a pres-
sure-limiting valve. The use of plastic tubing may cause electrostatic
6.7.1 Establishing grounding connection
for motor
)
See Figures 15 to 17 and Fig. 18
The product has ports for one protective earth conductor and one to
two equipotential bonding connections.
The port for the protective earth conductor is located in the motor’s
terminal box (
1
) and is intended for the electrical line and the electri-
cal connections
.
Depending on the motor size, there are one or two equipotential
bonding connections attached to the motor housing (see Figs.
15/16, position “- EK” and Fig. 19 (2) (3)).
The gerotor pump unit must be connected to the equipotential
bonding of the main machine using the provided equipotential
bonding ports.
• Establish equipotential bonding using the provided equipotential
bonding ports (
2
) (
3
) to the main machine.
In case of terminal clamps with cable lugs, select their size according
to the required conductor cross-section and the bolt size. Installation
in a slanted position is permissible only if the required air and creep-
age distances are maintained.
Strip conductor ends so that the remaining insulation extends al-
most to the cable lug.
The current-carrying connection is ensured by direct contact be-
tween the cable lug surfaces and the contact nut or contact screw.
WARNING
Hazardous contact voltages on unit
The protective earth conductor (in the motor terminal
box) and the equipotential bonding (on the motor hous-
ing) must always be connected. Ensure that the contact
is secure and that the connector diameter is adequate
and standard-compliant.
Connecting equipotential bonding to motor housing / direction of
motor rotation, Fig. 18
S
Rotation arrow
3
2
Connection with DIN cable lug
below external grounding bracket.
DIN 46 234