Make sure that the main power supply to the electric motor is off.
Check for loose pipe connections and pump bolts.
Turn the pulley (coupling) by hand to check whether it turns smoothly.
Before fitting the belt (coupling bolt), check the rotation direction of the electric motor.
(For the rotation direction, see the pump.)
fter checking the rotation direction, turn off the main power supply again.
Fit the belt (coupling bolt) and align the pulley (coupling).
ttach the safety covers (belt and coupling covers).
Fully open the discharge and suction pipe valves.
Fill the pump and suction pipe with water or liquid (prime the pump), while opening the air vent valve to
allow air to escape. When the pump is filled with water or liquid, fully close the air vent valve.
Turn on the power and check that water is pumped up.
Control the amount of flow with the discharge valve and maintain it at the proper level.
Check for vibration and noise and make sure that the electric current is normal. With this, the work is completed.
The machine chamber (bearing chamber) is charged with factory-supplied oil. For an external water injection type,
avoid a dry running of the mechanical seal.
- 4 -
Do not operate the pump with the valve closed!
Do not operate the pump with the valve closed!Do not operate the pump with the valve closed!
Do not operate the pump with the valve closed! (A long continuous operation
of the pump with the valves on the discharge and suction pipes fully closed
may cause an abnormal rise in the pump liquid temperature resulting in damage
to the pump components. Also avoid pipe blockage.)
●
Do not idle the pump!
Do not idle the pump!Do not idle the pump!
Do not idle the pump! (Operation without water or liquid in the pump may
damage the mechanical seals or other pump components.)
●
●
Keep foreign objects from entering the pump!
Keep foreign objects from entering the pump!Keep foreign objects from entering the pump!
Keep foreign objects from entering the pump! (Foreign objects in the pump
may damage pump components. If foreign objects are likely to enter the pump
use strainers to prevent them.)
（1）
（2）
（3）
●
Do not rotate the motor backward!
Do not rotate the motor backward!Do not rotate the motor backward!
Do not rotate the motor backward! (Even a slight backward rotation may
cause the screw impeller to come off resulting in damage to the pump.)
●
（12）
（4）
（5）
（6）
（7）
（8）
●
Be sure to fully open the suction pipe valve during pump operation. Friction
(pressure loss) on the suction pipe may cause cavitation.
●
Do not use the pump within an under-discharge or over-discharge range.
Otherwise the pump may fail at an early stage.
Before operating the pump be sure to attach the safety cover. Do not touch
the safety cover carelessly during operation.
（9）
（10）
※
（11）
Cautions in startup and operation
Pump startup procedures
！
！！
！
Danger
DangerDanger
Danger
！
！！
！
Danger
DangerDanger
Danger
！
！！
！Important
ImportantImportant
Important
！
！！
！Important
ImportantImportant
Important
！
！！
！Important
ImportantImportant
Important
！
！！
！Important
ImportantImportant
Important
！
！！
！Important
ImportantImportant
Important
