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9 Pump Installation
The pump dimensions and part list are available in
COMPASS.
9 1 Pipe sizing
LORENTZ pump systems are extremely efficient. It is
important to keep this efficiency throughout the entire
system. A main reason for loss of efficiency is pipe pressure
loss caused by friction. Make sure that you have included
the pipe pressure losses during the sizing process of your
system.
CAUTION – Consult COMPASS or a pipe
pressure sizing chart to determine the
correct size Oversize the pipe line to
reduce the pressure drop
HDPE-pipes – The use of correctly specified plastic pipes
is possible.
If you are not sure about the strength of your pipes contact
the pipe manufacturer.
CAUTION – When you use plastic pipes
you must use a safety rope
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
9 2 Motor water filling/refill
The submersible motor is factory-filled with water, but the
motor filling must be checked before installation.
The motor must be filled in vertical position (coupling
showing upwards, see figure below, "Figure 16: Filling,
venting and drainage hole").
CAUTION – Pay attention to the label
on the motor The label will explain if
the motor needs to be checked and
topped up (if necessary) or if it needs
completely filling
To fill the motor with water, remove the filling and venting
screw. Fill clean drinking water in to the motor until the
water flows out continuously without bubbles.
NOTE: Do not fill the motor using a high pressure
source such as a tap or hose as this will cause
unwanted bubble formation This may cause un-
wanted bubble formation
To refill the motor open the filling, venting and drainage
screws to allow water to exit from the drainage hole. Refill
the motor with clean drinking water as described above.
Figure 16: Filling, venting and drainage hole
venting hole
drainage hole
18
filling hole
Sun. Water.
Life.
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