8 Faults
Fault description Cause Remedy
Pump does not prime in
spite of full stroke motion
and bleeding.
Minor crystalline deposits on
the ball seat due to the valves
drying out
Take the suction hose out of the
storage tank and thoroughly flush
out the liquid end
Major crystalline deposits on
the ball seat due to the valves
drying out
Dismantle and clean the valves.
Fluid is escaping from the
backplate.
The screws in the dosing head
are too loose
Tighten the screws in the dosing
head crosswise - see below for
the tightening torque.
The diaphragm is not tight. Replace the diaphragm - refer to
"Repair".
Fault/operating indicator
does not illuminate.
The wrong mains voltage or no
mains voltage is connected.
Connect the pump correctly to the
specified mains voltage -
according to the specification on
the nameplate
Fault/operating indicator is
red.
The fluid level in the storage
tank has reached "Liquid level
low".
Fill the storage tank.
The multifunctional switch is
positioned between 2 selection
options.
Allow the multifunctional switch to
lock into selection option 1.
Electronics fault Return the pump.
Tightening torque
Data Value Unit
Tightening torque for screws: 4.5 ... 5.0 Nm
Faults
18
Mahar Fan Abzar
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