Sako SKI650 Series User manual

SKI650 Series
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Notes for Safe Operation
■Before Installation
WARNING
Do not install or operate the controller that is damaged or has missing parts.Otherwise,it
may result in equipment damage or harm life.
■Installation
CAUTION
◎Hold the bottom of the controller when installing or moving the controller,can not just
hold the shell to prevent the injured or broken controller.
◎Install the controller on nonflammable material like metal.Otherwise it may cause a
fire.
◎When the controller is mounted in a protective cabinet,the cabinet need to set vents to
ensure ambient temperature is below 40℃,otherwise it may be damaged because of high
temperature.
◎When install the controller,you should avoid direct sunlight,can be installed under the
PV array.
WARNING
◎Ensure only qualified personnel to operate.Otherwise it can cause an electrical shock
or damage of the controller.
◎Make sure the controller is isolated from power supply by the circuit breaker.Otherwise
it may cause a fire.
◎Make sure that the ground terminal is grounded correctly.
◎Do not touch the power input terminals of the controller and the pump’s terminals .
Otherwise it may cause an electrical shock.

SKI650 Series
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■Operation
CAUTION
◎Do not open or remove the front cover when operation.Otherwise it may cause an
electrical shock.
◎Before testing the pump must be installed;can not make the pump dry-runfor a long time.
In order to test the pump,the maximum dry-runtime is not more than 15s
◎If the pump turning is reversed,it can change any two lines of the pump’s three power
lines.
◎When the water pump is due to the light shadow,it will restart the operation after 120s.
◎If a water level probe is installed in the well,when the water level is below the level of
water shortage,the water pump will stop.If there is no water level probe,it will need to be
short.If a water level probe is not used,the controller terminal must be short.
■Maintenance and check
WARNING
◎Only qualified or authorized professional personnel can maintain,replace and inspect
the controller.Otherwise it may cause damage and injury.
◎Wait at least 10 minutes after the power failure,or make sure that is no residual voltage
before carry out maintenance and inspection,otherwise it may cause damage.
■Others
WARNING
◎If failing to follow these instructions,resulting in damage to the machine,can not enjoy
the warranty service.

SKI650 Series
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Chapter 1 How It Works
The SKI650 solar pumping system serves to provide water in remote applications
where electrical grid power is either unreliable or unavailable.The controller can
convert DC from the PV array to AC，and drive kinds of pumps.In sunny days,the
SKI650 solar pumping system can continuously pump water.The system without
batteries and other energy storage devices,it is recommended to take water
pumped to a reservoir for later use and water sources are those natural or special
such as river,lake,well or waterway,etc.A float switch can be installed in the
water tower to control the pump operation.And install a low-levelprobe in well to
detect the well water so that when the water shortage pump is stopped.Figure 1
shows a typical diagram of a SKI650 solar pumping system.The major parts and
components in the system are listed after the diagram.
Figure 1 SKI650 solar pumping system
The SKI650 solar pumping system is designed which consists of:
A.Solar Array
B.DC Breaker or Disconnect Switch
F. Water Tower
Float Switch
E. Well
Level Switch D. Pump
A. PV Array
C.
SKI650
Solar Pump Inverter
B. DC Breaker

SKI650 Series
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2.5 Outline &Installation Dimensions
2.5.1Outline &installation dimensions diagram
Figure 2 Outline &installation dimensions diagram

SKI650 Series
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Chapter 3 Mechanical and Electrical Installation
3.1 Mechanical Installation
3.1.1 Overheat protection
Install the SKI650 solar pump inverter in a control box with control terminals and
power wiring.Install the control box out of direct sunlight to prevent overheating
and reduced performance.The optimum location is on the mounting pole for the
solar array underneath the array for protection from the sun,heat,and weather
elements.Placing the control box in direct sunlight or high ambient temperatures
will result in reduced performance due to temperature foldback protection of the
SKI650 solar pump inverter.For optimum performance,maximize the shading of
the control box.
It is recommended that use a wire tube to protect the electric wire from the
destruction of wildlife and natural weathering,and bury the wire tube into the
ground to strengthen protection.If you do not use a wire tube,you can use a higher
quality outdoor cable.
3.1.2Location Selection
The SKI650 solar pump inverter is intended for
operation in ambient temperatures up to 60℃,
but in order to avoid overheating caused by the
failure,it is recommended to install the
controller in the shadow position.
Figure 3 Control Box Location