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POWXG9442 EN
Copyright © 2016 VARO NV P a g e | 6 www.varo.com
11 TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
The electric motor is running
but the pump does not suck
water
1. After the pump starts, the pump body
does not fill with water
1. Fill the pump with water
2. Insufficient tightness of the suction
hose
2. Check the recommended and used
pans and components of the pump,
e.g. joint of the suction nose, joint of
the pressure hose, clamping ring,
suction hose, etc., including screw
sealing strip made from Teflon or
hemp cord. The pump can work only
when well sealed
3. The filter screen of the non-return
valve of the sucking inlet is blocked
3. Clean the non-return of the sucking
inlet and the filter screen
4. The air can't be released from the
pressure hose because the water outlet
is closed
4. When the pump starts sucking, open
the water outlet (e.g. the tap. sprinkling
nozzle etc.)
5. The waiting time does not correspond
to the regulations
5. Fill the whole suction hose with
water, or recheck it at least 7 minutes
after the pump starts
6. Excessive suction head (>8m)
6. Reduce the suction head
7. The non-return fails to suck water
7. Check the water level of the well or
the water pool. If possible, increase the
length of the suction hose.
The electromotor cannot run
1. No power supplied
1. Check the power supply
2. The ventilator hood obscures rotation
of the vane
2. Pull out the power plug, remove the
ventilator hood with a screwdriver, then
reinstall it again by slightly rotating the
vane and check to see if it rotates
freely
3. Fan blocked
3. Pull out the power plug, move the
shaft with the screwdriver through the
ventilator hood. If the shaft is blocked,
send it to a service center for
inspection
Insufficient water flow-out
1. Excessive suction head (>8m)
1. Check the suction head
2. The filter screen of the non-return is
blocked
2. Clean the filter screen
3. The suction water level lowered too
much
3. Immerse the non-return in deep
water
4. Impurities have reduced the effective
capacity of the pump
4. Wash the shell of the pump, the
suction hose and the outlet pressure
hose with pressurized water
The heat-sensitive switch
cannot switch-off the pump
1. Over-load of the electric motor due to
friction caused by impurities entering the
motor
1. Wash the shell of the pump with
pressured water
The switch of the pump is
always OFF or ON
1. No non-return valve installed on the
suction hose
1. Check to see if a valve is installed
on the suction hose
Frequent switching ON/OFF of
the pump switch (when used
for household water supply
system)
1. Rupture of the rubber envelope in the
pressure tank
1. Replace the rubber envelope or the
container
2. No compressed air in the container
2- Use an adequate valve and conned
this with a compressed air supply at
1.8 bar, and fill the container with air
6


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