Lorentz PSk3-7 User Manual

Service and Maintenance 9796 Troubleshooting
EN EN
13 Service and Maintenance
l
WARNING – If an AC power source is
connected to the controller use the circuit
breaker to disconnect the AC power from
the controller.
If a DC power source (PV Generator)
is connected to the controller use the
disconnect switch(es) to disconnect the
DC power from the controller.
Wait at least 5 minutes before doing any
service and maintenance on the system.
Use a multimeter to verify that there are
no residual AC or DC voltages present.
Routine inspection and maintenance
To extend lifetime of the controller a regular
inspection is advised. We recommend an inspection
interval of at least once a year.
Requirement of inspection and maintenance:
(1) The inspection must be performed by
professional technical personnel.
(2) Cut o the power supply of the controller rst.
(3) Avoid leaving any metal components in the
controller, or else they might cause damage to
the equipment.
(4) Do not use a megohmmeter to test the control
circuit.
(5) When conducting any insulation test on the
motor, you must dismantle the connection
between motor and controller.
Main points for inspection and maintenance
The surface pump motors need to be re-lubricated
every 5000 h of running time as indicated by the
label on the motor.
The cooling fan and heat sink can collect dust and
particles over time. They should be inspected
and cleaned regularly, at least once a year. Use a
soft brush or cloth for cleaning. Be careful with
using compressed air as it can spin-up the fan
uncontrollably and cause damage to the fan or
controller.
Please use the controller under the environmental
conditions of this manual. Inspect and maintain as
per "Table 16: Inspection overview" on page 98.
Quick checklist
Make sure
(1) the pump is suited for the total lift that is
required.
(2) there no speed limitation set in LORENTZ
Assistant. Connect with LORENTZ Assistant to
conrm correct settings.
(3) the solar array is receiving sucient sun
light without shading on the modules, the PV
generator is oriented properly and tilted at the
correct angle. Inspect and test the PV generator
circuit and the controller output, as stated. Take
notes of your measurements.
(4) all wires and pipe runs are sized adequately for
the respective distance.
(5) there is no leak in the output pipe from the
pump.
Could the issue not be resolved, please raise
a service case (ticket) in LORENTZ partnerNET
including the service support forms available on
partnerNET, model and serial numbers and your
measurements.
Check the oat switch
If the controller indicates “Remote OFF” when the
storage tank is not full, inspect the oat switch
system. If your system has a oat switch, it will be
mounted in the tank. If inspection is not feasible, you
can bypass the switch or test it electrically.
Force a quick start
If you restore a connection or bypass the probe or
oat switch, there is no need to wait for the normal
time delay. Manually switch the on/o switch (or the
power source) o and on to reset the system. The
pump should start immediately if sucient power is
present.
If the pump responds to the bypass tests but not to
the oat switch, the wires may be shorted (touching
each other) or open (broken) or the switch may be
stuck with debris, or out of its correct position.

Lorentz PSk3-7 Specifications

General

Brand	Lorentz
Model	PSk3-7
Category	Inverter
Language	English