9.3 SunSwitch
CAUTION – Installing a SunSwitch is
mandatory for PS1800 CS-F and all
PS4000 pump systems. Operating without
a SunSwitch can lead to increased wear or
damage the pump. Such damage is
excluded from the warranty.
In the early morning and the late evening hours there will
be a timespan where the irradiation is sufficient to start a
slow rotation of the pump but insufficient to deliver any wa-
ter. Without water flow, the input power will be converted to
heat and the water will heat up. Depending on the ambient
conditions, it might even be possible that the water starts
to boil.
The LORENTZ SunSwitch light sensor allows an irradiation
level to be set at which the pump is switched on. This means
the SunSwitch will not allow the pump to start until there
is sufficient irradiation to power the pump to the point of
water delivery.
For information about the SunSwitch installation and the
correct settings please refer to the SunSwitch manual.
Figure 24: SunSwitch
Correct SunSwitch settings are given in the COMPASS
report, subject to correct parameters. These settings must be
checked on site to make sure that the parameters entered
in COMPASS match the conditions on site and that the
SunSwitch is working as intended.
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