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15 Rue des Marais 44310 ST Philbert de Gd Lieu – Tel. 02 40 59 95 35 – www.acis-france.com
POMPE MGD+
MGD+ PUMP
5.
TROUBLESHOOTING
FAULTS
PROBABLE CAUSES
SOLUTIONS
The pump won’t
prime
Air leak along the suction pipe
Check the condition of the couplings and seals along the suction pipe
Incorrect motor revolution direction
(three-phase motor)
Invert 2 phases on the electricity supply
Weak pump output
Air leak along the suction pipe
Check the condition of the couplings and seals along the suction pipe
Incorrect motor revolution direction
(three-phase motor)
Invert 2 phases on the electricity supply
Pressure loss in the suction
Avoid: long pipes, numerous elbows, positioning the pump higher than
the water level, narrow pipes
Incorrect voltage
Make sure the voltage in your supply corresponds to the value
specified on the motor data plate
The motor
stops
Motor overheat
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)
Noise/vibration
Cavitation
See paragraph 6
Foreign body (sand, etc)
Dismount, clean, reassemble
6.
MINIMUM OPERATING PRESSURE
Model
Pressure in the
water column
height
Pressure in Bar
Pressure in g
(grams)
MGD+
6-9/10-16/14-18
5
0.50
500
18-23
5.5
0.55
550
24-28
6
0.6
600
30-35
9
0.9
900
35-40
9.5
0.95
950
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.