Lorentz PS1200 Solar Pumping Planning Guide

13
CAUTION If you are not using
a low-water probe, connect a
small wire between terminals
1 and 2.
CAUTION Loose connections are a
comon cause of failure. Pull each
connection to confirm.
4.4 Solar Array Disconnect Switch in the Junction Box
4.5 Junction Box (Controller Input) Wiring
WARNING TEST THE VOLTAGE
before connecting power to the
controller. Voltage (open circuit)
must not exceed 100 V for PS200,
150 V for PS600 and 200 V for PS1200 systems.
(Even in cloudy weather, the open circuit voltage
will be near maximum.)
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.
The disconnect switch satisfies National Electrical Code
requirements for a safety disconnect between the solar
array and the controller. During installation and mainte-
nance, switch off the disconnect switch to prevent shock
and arc burn hazard.
Note: Overload protection (fuses or circuit breaker) is
NOT required in the solar array circuit.
Explanation:
1. Short circuit current from the solar array can never
reach the ampacity (maximum safe amps capacity)
of the recommended wire.
2. The PS controller has internal overload protection.
disconnect switch
System Diagram For solar-direct systems, refer to the
System Diagram at the end of this manual.
Ground connectionsThe two ground terminals
in the junction box are bonded together and are also
bonded to the metallic enclosures of both the junction
box and the controller. See section 4.2
POWER IN Ensure that the solar array DISCONNECT
SWITCH (or battery fuse or circuit breaker) is OFF.
Connect the power from the solar array to the input
terminals in the junction box. Observe polarity. If your
wires are not clearly marked +/–, test them using a DC
voltmeter or multitester.
PUMP See section 4.8.
Low Water Probe See section 4.10
Float Switch See section 4.11, Automatic Control for
Full-Tank Shutoff. A connection is made at the factory
between terminals 4 and 5. If you are NOT using a float
switch, leave this connection in place.
Figure 10:
Controller terminals
CAUTION If you are not using a
low-water probe, connect a small
wire between terminals 1 and 2.

Lorentz PS1200 Specifications

General

Brand	Lorentz
Model	PS1200
Category	Water Pump
Language	English