3
2 ELECTRICAL INSTALLATION
2.1 Controller and Conduit
WARNING To be
installed, con-
nected and
serviced by
qualified person-
nel only. Ensure
all power
sources are
disconnected
when making
connections to
the controller.
Follow all
appropriate
electrical codes.
There are no
user serviceable
parts inside the
motor or the
controller.
CAUTION Loose connections are the most
common cause of system failures.
Pull on each connection to confirm that it is
secure.
Protection from solar heat Electronic
devices are most reliable when they are
protected from heat. Mount the controller in
the shade of the mid-day sun. An ideal
location is directly under the solar array, on
the north side of the mounting pole. If shade
is not available, cut a piece of sheet metal
and bolt it behind the top of the controller.
Bend it over the controller to provide shade.
This is especially important in extremely hot
locations. Extreme heat may trigger a thermal
switch in the controller and cause it to turn off.
Location of controller Mount the controller
vertically to keep out rainwater. It is preferable
to mount it ON THE NORTH SIDE of a pole or
other structure, to help reduce solar heating.
This may also allow easiest access without
hitting your head on the lower (south) edge of
the array.
Electrical conduit is recommended We urge
you to use electrical conduit (pipe) to protect
outdoor wiring from the weather, from human
activities, and from chewing animals. See
photos on the following pages. If you don’t
use conduit, use strong, high-quality outdoor
cable. Where cables enter the junction box,
install sealed strain-relief cable clamps.
Keep the controller box sealed Unused
holes must be sealed to keep out animals,
insects, water and dirt. Each hole is supplied
with a rubber plug that can be kept in place
for this purpose.
Battery system Batteries must be in a cool
location for best longevity, and in a protective
enclosure for cleanliness and safety. Place
the controller near the batteries but NOT in
the same enclosure. They must be safely
isolated from the battery terminals and from
corrosive gasses.
WARNING TEST THE VOLTAGE before
connecting power to the controller. Voltage
(open circuit) must not exceed 100V for
PS200-, 150V for PS600 and 200V for
PS1200 systems. (Even in cloudy weather,
the open circuit voltage will be near maxi-
mum.)
WARNING Do not apply a direct connection
or an amp meter between + and – when the
controller is connected. A short circuit
here will cause a strong discharge.
WARNING SOLAR-DIRECT systems only —
Do not connect any electrical load to the
solar array if it is not part of the LORENTZ
Pump system. Connection of a battery
charger, active solar tracker controller, electric
fence charger, or other load simultaneously
with LORENTZ PS systems may “confuse”
the controller and prevent proper operation.
System Wiring Diagram For solar-direct
systems, refer to the System Diagram at the
end of this manual and wire accordingly
POWER IN Ensure that the solar array
DISCONNECT SWITCH (or battery fuse or
circuit breaker)- is OFF. IN case that no
disconnec swtich is used, make shade or
cover the solar array. Connect the power from
the solar array to the input terminals in the
controller box. Observe polarity. If your wires
are not clearly marked +/–, test them using a
DC voltmeter or multitester.
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