[10]
Sound generated by pump
The level of sound generated by each type of pump is shown in the table. Arrange a muffling measures in
accordance with the sound level. The procedure for sound measurement conforms to the EN 31201 (ISO11201).
- 28 -
(dB)
M
Preparation for start-up
Preparations should be made, as described below, in the case of initial operation after installation and in the case of
restarting of operation after a long period of inactivity.
[1]
Thoroughly clean the inside of the pump and pipe. Then, supply liquid.
[2]
Tighten the flange connecting bolts and the installation bolts on the base.
[3]
After priming the pump, close the discharge valve fully.
Also, make sure the air-vent valve and flushing piping valve are closed.
[4]
In the case of the flooded suction method, measure the pressure in the flood pipe to confirm that the pump is
filled with liquid.
[5]
In the case of the suction lift method, prime the pump.
[6]
Run the motor instantaneously to check for correct direction of motor rotation. The motor should run in the
direction indicated with the arrow on the pump. If the direction is reversed, exchange any two wires of the
three-phase power wires.
Model
Sound
Level
MDF-L250
75
401
80
422, 423, 425
80
505, 507
80
657, 6510
85
6515
85
