5
Specific Warnings for Installation of PS Pumps
Open circuit (no-load) voltage above 100 V
for PS200 controllers, above 150 V for PS600
controllers and above 200 V for PS1200 and
PS1800 controllers will destroy the control-
ler. This may occur if the solar array is wired
incorrectly. See Solar Array Wiring, Section
4.3
Do not attempt to run the motor without
controller.
Do not attempt to use the controller for
any purpose other than LORENTZ PS pump
systems.
To be installed, connected and serviced by
qualified personnel only. Ensure all power
sources are disconnected when working on
the system. Follow all appropriate electrical
codes. There are no user-serviceable parts
inside the motor or the controller.
Solar pumps run at low flow rates, and have
closer tolerances than conventional pumps.
Extreme sand or silt concentration (greater
than 2 % by volume) may cause the pump
to stop, or the pipe to fill with sand. Do not
use the pumps to clean out a dirty well. See
Section 5.7 for advice about dirty water.
Helical rotor pumps are sensitive to heat.
Protect the pump from sunshine or other
source of heat, or it may lock temporarily.
If the water source is warmer than 22 °C
(72 °F), be it only temporarily, a special mo-
del may be required. See Section 5.5
Undersized wire will cause failure to start.
See Section 4.7
Install proper system grounding for safety
and lightning protection. See Section 4.2
Do not touch the controller input or pump
wires together to test for a spark.
Do not run the pump dry. Exception: to test
direction of rotation, for maximum 15sec-
onds. See Section 4.9
Test the direction of motor rotation before
installing the pump (counterclockwise looking
down). If direction is reversed, exchange the
connection of any two of the three power
wires to the pump. See Section 4.9
Motor cable strain relief: Submersible motors
must use a safety rope or cable to act as a
strain relief for the motor cable and to avoid
losing the pump in the well if the pipe breaks.
See Section 5.4
When pump is stopped by a shadow or by
action of float switch, it will restart after a 120
seconds.
The low water probe must be submersed, or
the pump will stop for 20 minutes. If the probe
is not to be used, connect the probe terminals
in the junction box. (See section 4.9 and 4.10)
Helical rotor models (without a “C” in the
model number) are not self-draining. If drain-
age is required for freeze-protection, install
a weep hole or draining device below freeze
level. See Section 12.7
Do not remove the check valve in attempt to
make it self-drain.
Pumps should not be stored in water for a
period longer then three month. Too long stor-
age time might seize the pump up. Pumps will
not be damaged, but might have to be pulled
to free them again. Therefore it is strongly
advised that every two to three months the
pumps should run for a few minutes.
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