v140822
Sun. Water. Life.
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.
10
PS15k2
PumpController
3.9 Grounding
Before starting to work at the electrical system, by all
means make sure that all components are disconnected
from the power source. Only switch on the system when
you have finished all work.
3.9.1 Why Grounding
It is mandatory to protect the users from potentially fatal
electrical shocks. It also protects against electric charging
or a short circuit inside the device. This is accomplished
through clamping, bolting or other effective mechanical
means to provide an effective grounding path to the earth
to ensure safe operation at all time.
The grounding is also important to the system for lightning
protection. In general it is meant for indirect lightning
strikes and induced electrical potentials during operation of
the pump system.
3.9.2 How to ground
The grounding cable must be a copper cable with a cross
section of at least 16 mm
2
. For connection with the con-
troller use cable lugs of sufficient size!
CAUTION: The wiring has to be done by
qualified staff only. Make sure that the
grounding cable has reliable connec-
tion to the ground.
This is a possible example with a grounding rod. The
grounding profile rod should be located about 4 – 5 m from
the controller. The cable must not carry any mechanical
loads. The rod must be completely burried in the ground. In
any case you need to refer to local standards and require-
ments.
3.9.3 SunSwitch
CAUTION: To avoid multiple starts of
the pump in twilight conditions, a
SunSwitch must be installed and
configured according to COMPASS
data. Multiple starts due to an
incorrectly configured SunSwitch can
lead to increased wear and damage
the pump. Such damage is excluded
from the warranty.
grounding rod
grounding cable
Picture may differ to product
Figure 5: Grounding
Figure 6: Grounding cable mounting at controller housing
Figure 7: Grounding cable mounting at grounding profile rod
washer
cable
tooth washer
washer
nut
nut
washer
tooth washer
cable
cable washer
bolt
bolt for ground connection
at controller housing
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