Installation Depth; Additional Features; Loss Insurance; Plastic Pipes - Lorentz PS15k2 C-SJ42-6 Manual

9 5 Installation depth

WARNING – The pump must be
submerged completely Never let the
pump run dry Always use a dry-run-
ning protection to make sure that the
pump cannot not run dry LORENTZ
prescribes a dry run protection for
every submersible pump system
Make sure that the pump unit is suspended properly and is
not in contact with sand and mud from the well bottom.
It is recommended to install the pump above the filter zone
(= water entry zone) of the well to keep the sand content
in the water low and ensure proper cooling of the motor, cf.
figure below "Figure 27: Installation depth".
CAUTION – If the pump does not hang
above the filter zone a flow sleeve is
necessary

Figure 27: Installation depth

Filter
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 6 Additional features

9 6 1 Loss insurance

We recommend the use of a safety rope as a loss insurance.
If the pipe breaks because of start-up torques of the motor,
too much weight, pipe corrosion or wrong installation a
safety rope can prevent the total loss of the pump system
and damage to the well.
Choose a saftely rope that can handle the the weight of
the whole installation and the water inside the pipes. The
rope material must be water-resistant.

9 6 2 Plastic pipes

When the pipes are strong enough the use of plastic pipes
is possible. If you are not sure about the strength of your
pipes contact the pipe manufacturer.
CAUTION - You have to check if the
pipes are strong enough to hold the
whole weight of the pump, the motor,
the pipe system and the water in the
pipes
CAUTION - When you use plastic pipes
you should use a safety rope
L1: Installation depth
L2: Max immersion depth
L3: Min immersion depth
L4: Distance to filter
L5: Depth to highest water level
L6: Depth to lowest water level
L4
= 70m
= 1m
25

9 6 3 Flow sleeve

All LORENTZ PSk2 submersible pumps are designed for the
use of water with a temperature between 0°C and 30°C.
The minimum liquid velocity past the motor is 0.16 m/s.
CAUTION – Where the stated liquid
velocity cannot be achieved, a flow
sleeve must be installed
The maximum recommended sand content, before any sig-
nificant detrimental effects occur, can be found in chapter
"5 Operating Conditions" on page 5.
A higher content will cause excessive wear within the
pump and reduce the pump's life span considerably. Any
pump that is blocked by sand will not be covered by war-
ranty.

Figure 28: Operation of a flow sleeve

Sun. Water. Life.