7
Preparations
●
Before Operation
・
Check the direction of the pump rotation, suction port and discharge port.
・
The rotation direction for our NOP motors (which is specially customized to work with NOP
pump), is indicated on the wiring plates on the motor frame or terminal box section. Make
the necessary connections after first checking these directions.
If using our NOP motor
confirm the direction of motor rotation before wiring, which is indicated on the
wiring plate attached to the motor frame or terminal box.
1) Our NOP motor (3-phase power source) is designed to rotate in the
standard rotation directions when wired in accordance with the wiring
diagram as shown below.
2) Some types of general-purpose motor (3-phase) equipped with a base
coupling may need to be wired differently from the diagram above, if that
will be the case, wire the connections in accordance with wiring plates on
the pump.
Caution:
Mistakes in the rotation direction and positioning of the suction and
discharge ports could result in oil leaks or damage to the pump.
・
Confirm whether the tank on the suction side is filled with clean oil.
・
Confirm that there are no loose sections in the piping.
・
Confirm that the entire pipe circuit is fully opened.
・
Confirm that the valves around the pump are all fully opened.
・
On the initial startup, turn the pump on and off quickly for a few times to confirm
that the motor is running in the right direction.
・
There is no ON / OFF switch on our pumps. It will start just after the wire is
connected to the power supply. So, make sure that the power is completely
disconnected before performing the wiring.
●
Test Run
1) Dry Run
・
Do not run the pump dry for more than 10 seconds. Stop the operation if the
pump cannot prime oil.
・
When it takes long time until the pump starts to draw oil, pour oil into suction
pipe beforehand.
