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18/19
NT 1101-F00 08.10 A40 - AS40 e
PROBLEM POSSIBLE
CAUSE
SOLUTION
Electric power supply failure.
Check the connections :
x
There must be 3 phases
x
The connections are suitable for the voltage
(delta-star)
x
If possible, check the parameters for the different
motor frequencies (starting torque, power input…)
When the pump has not been used for a long
period of time, the boss of the wheel has not
been dipped in the lubricant.
As it has not been lubricated, it causes a lot of
resistance on start up.
Operate the pump intermittently to try to free the wheel
but do not be too insistent to prevent the reduction
gear from being damaged.
If the wheel remains stuck, contact your local dealer for
instructions.
THE PUMP
WILL NOT
START
Sediments or other substances have built up
inside the hose and are blocking the pump.
Reverse the pump rotation direction or disassemble
the hose.
If the wheel remains stuck, contact your local dealer for
instructions.
The inlet or discharge valve is partially closed.
Open the inlet or discharge valve.
Air is entering the inlet piping.
Check the inlet line.
The pumped liquid is too viscous.
Significant pressure drop at inlet.
Check the inlet line
(see § 2.4 PIPE DIAMETERS).
WEAK FLOW
The pump hose is damaged.
Replace the hose (see § 4.1 REPLACING THE HOSE).
The lubricant is not suitable.
Empty the pump body and replace the lubricant with
one that is recommended by MOUVEX.
The lubricant is dirty or too old.
Empty the pump body and replace the lubricant with a
new MOUVEX lubricant.
Temperature of the pumped fluid is too high.
Check the maximum fluid temperature allowed for the
hose material.
TEMPERATURE
TOO HIGH
Pump speed too high.
Reduce speed.
Lubricant is not suitable.
Empty the pump body and replace the lubricant with
one that is recommended by MOUVEX.
Chemical incompatibility between the hose and
the pumped fluid.
Check the compatibility of the hose with the fluid and
replace the hose with another one made of suitable
material.
Temperature of pumped fluid too high.
Check the maximum temperature permitted for the
hose.
The discharge pressure is too high.
Check the maximum pressure allowed for the pump.
Reduce pressure drop at discharge.
HOSE LIFE TOO
SHORT
Pump speed is too high.
Reduce speed.
The pumped fluid contains impurities or
sediments.
Reverse the pump rotation direction and use the upper
port for inlet.
THE HOSE IS
PULLED INTO
THE PUMP
BODY AT INLET
Clamp
9
is not sufficiently tightened.
Retighten the clamp.
7. TROUBLESHOOTING