Troubleshooting - ACIS VIPOOL MGD+ Series User Manual

POMPE MGD+

5. TROUBLESHOOTING

FAULTS PROBABLE CAUSES
Air leak along the suction pipe
The pump won't
prime
Incorrect motor revolution direction
(three-phase motor)
Air leak along the suction pipe
Incorrect motor revolution direction
(three-phase motor)
Weak pump output
Pressure loss in the suction
Incorrect voltage
The motor
Motor overheat
stops
Noise/vibration
Foreign body (sand, etc)
6. MINIMUM OPERATING PRESSURE
Model
6-9/10-16/14-18
18-23
24-28
MGD+
30-35
35-40
Explanation: It is vital that you check the pressures specified above when commissioning the pump. In fact, a pressure
below these minimum values leads to the premature wearing of the pump assembly.
Setting: Close the delivery valve progressively in order to achieve the minimum pressure that corresponds to your model.
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MGD+ PUMP
Check the condition of the couplings and seals along the suction pipe
Invert 2 phases on the electricity supply
Check the condition of the couplings and seals along the suction pipe
Invert 2 phases on the electricity supply
Avoid: long pipes, numerous elbows, positioning the pump higher than
the water level, narrow pipes
Make sure the voltage in your supply corresponds to the value
specified on the motor data plate
Make sure the fan grid is free of obstacles (at least 30 cm clearance
between the wall and the fan)
Increase the pump's operating pressure by slightly closing the delivery
valve (see table below)
Cavitation See paragraph 6
Dismount, clean, reassemble
Pressure in the
water column
height
5
5.5
6
9
9.5
SOLUTIONS
Pressure in g
Pressure in Bar
(grams)
0.50 500
0.55 550
0.6 600
0.9 900
0.95 950
10