CAUTION!
• Check that the pump body and parts have not been accidentally
damaged or that any bolts or nuts have not been loosened in transit.
• To avoid break the inlet&outlet, when connect and tighten the pipe
connections, it’s necessary to reliably fix the hexagonal nut of
inlet/outlet by wrench. (as shown in the following figure
）
• Wires have polarity. Red is plus and black is minus. Wrong polarity
will damage the motor.
• Make certain that the system is filled with liquid and that all air has
been purged before start the pump.
• Be sure the power source conforms to the requirements of pump.
• There is a powerful magnet inside the pump liquid end, do not use
any liquid that contains metallic substances such as iron, nickel, etc.
• To avoid the introduction of water into the electronics, keep the
pump body dry.
• Pump should be drained when subjected to freezing temperatures.
Connecting:
Installation & direction
• It is preferred that the pump always remains in a horizontal
direction and pumping upward. (as shown in the following figure
）
• It is acceptable for the pump to be mounted under the piping in a
vertical direction.
• The pump cannot be mounted over the piping in a vertical direction
and any position of the motor is over the pump chamber, this can
cause the pump to run dry leading to premature failure of the pump.
• It is recommended that the pump shall be installed in a position
lower than the liquid level of the tank by at least 12 inches (30 cm). If
this distance is too short, air may enter the pump, causing damage.
• To minimize frictional resistance, the shortest piping possible with a
minimum number of bends should be utilized on the inlet or suction
side of the pump.
• Install a water conditioner if you have hard water.
Installing:
Before start the pump:
• Install the pump in correct direction and position.
• Make certain that the power source conforms to the requirement of
pump.
• Be sure the check valve is installed in the proper direction of flow.
• Make certain that the system is filled with liquid and that the air has
been purged.
Start the pump
• Open the isolation valves and any other valves that may have been
closed during the pump installation
• Plug the pump on
• Power cycling the pump several times accelerates the air removal.
If you hear noise initially, this should abate after a short while as air
is purged from around the impeller
If the pump is noisy there may be air trapped in the system. To
purge the air from the pump, turn the pump off and on several times.
To purge the air from the system open a faucet until all the air in
the line has escaped.
• If the noise does not disappear or decrease substantially, change
the pump’s installation direction or position, and purge the system
once again.
Trouble Shooting
Noise in the System
The pump should run smoothly and quietly, the virtual noise intensity
is relative to the pump consumption. During normal operation, an
occasional air bubble may pass through the pump housing causing
a momentary gurgling noise. However, if noise at the pump persists
for any prolonged period, correct the problem (see below).
• The check valve/non-return valve is mistakenly installed on the inlet
side of pump or in the wrong direction.
• The inlet side shut-off valve is closed or clogged.
• There is air trapped in the pump housing, turn the pump on and off
several times to see if the air pocket can be “bumped” out of the
pump and if not, then open a faucet for manual venting until all the
air in the line has escaped.
• The untight pipe connections permit air into the loop.
• The pump was mounted over the piping in a vertical direction, the
rotor maybe be surrounded by air and no liquid lubricate the bearing,
dry running virtually (change installation direction and purge of air)
• There is sediment or crimps blocking the rotor/impeller.
• The rotor bearing has worn due to dry running causing the rotor to
wobble during operation.
Solar DC Circulation Pump
Installation & Operating
Pump Operating Intermittently or Not at All
• Error in polarity connecting (will damage the motor).
• No or insufficient power to the pump.
• Dry running protection is action, need switch the pump on again.
• Over-temperature protection is working, will resume normal
running when the temperature decreases.
• The ceramic bearing of rotor is worn or damaged, need replace the
rotor/impeller.
• There are sediment or crimps in the recirculation line that would
restrict the flow, please clean the impeller.
If above reason can not resolve the problem, please unplug the
pump several times.