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Mas Grup
16
11. FAILURES, CAUSES AND PRECAUTIONS
FAILURE TYPES THE REASON OF THE FAILURE
INTERVENTION
If pump does not
work (If does not
run the motor)
There is not energy in the line
Energy circuits should be checked by an authorized electrician.
Low intensity
Electric values measurements should be done by an electric technician
Delivery float switch
Check the float switch.
Water level is not enough
Wait for the water level to achieve the available level
Electrical cable is broken
Consult to an authorized service or our factory
Pump impeller is blocked, thermic is
throwed
Shut the energy of motor down and look inside from inlet pipe and pressure
pipe. Impropriety situations has to be solved as stuck solids or removed
impeller etc. The pump should be rerun by pushing thermic.
If there is low
capacity or the
pump does not
flow water
Delivery pipe is restricted
Clean the delivery pipe with return cleaning.
Manometric (Hm) head is very high.
Calculate the static delivery head and system losses again.
Impeller or body is restricted
Pump should be removed and cleaned.
Hose is broken or bored
Check the hose
Impeller is weared out or broken
Impeller should be changed.
If the motor is
burning
Intensity is very low or very high
CONSULT TO MAS DAF AUTHORIZED SERVICE
Rapid intensity fluctuation
Float switch level is defective
Impeller or body is restricted
High current flow is pulled over
Pump works without water (dry)
If there is water in the motor (water
leakage)
Bearings are spreaded and rotor is
scuffing
Mechanical seal is weared out or broken
Pump works in wrong operating point
Used in high viscosity liquids such as
heavy mud or sandy
Delivered fluid temperature is over 40
°
C