Figure 11 Motors with international leads
3.2.6 Low water level probe wiring (optional)
In order to avoid dry pumping lead to pump damage can be connected a wells
probe to the terminals of the PDS23 solar pump controller, so as to detect the water
level in wells and the wire maximum length can not more than 50m. If there is no
water level probe for the detection of the water level, please keep the two terminals
of the controller short. The controller can also detect water through the built-in
software water detection function; see section 4.3.
3.2.7 Water tank level float wiring (optional)
Use a floating ball switch to prevent reservoir overflow is recommended. When the
reservoir is full, the pump will stop; when the water level is lower than the low level,
the pump will be restarted. It can prevent the overflow, limit the unnecessary pump
wear. The PDS23 controller allows the use of small signal line to connect to remote
float switch, even if the position of the reservoir is far away.
Figure 12 Floating Ball Diagram
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