Problem
The injector does not
work
The injector has
stopped working
There is a leak from
the injector.
There is no suction.
TEFEN Advanced Plastic Solutions.
Troubleshooting Guide
Check
The injector is fitted with the arrows in the
opposite direction to the water flow.
The inlet and outlet valves are closed.
The inlet filter is blocked.
There is no water flow at the appropriate
pressure.
There is no water flow at the appropriate
pressure. Open the main valve. Open the nut
locking the motor cover, remove the motor
cover, and remove the mechanism. Check if
the motor seals are defective.
Check if the springs are broken.
Check if the seals above the valves are
defective or have been displaced.
Check if one of the parts of the mechanism
is broken.
The leak is from the connection between the
body and the cover.
The leak is from the connection of the
suction tube.
The leak is from the non-return valve.
The suction filter is blocked.
Dismantle the injector unit and check if the
suction seal is defective.
The non-return valve is defective.
TEFEN
9
Solution
Fit The injector with the arrows in
the direction of the water flow.
Open the valves
Clean the filter.
Open the main valve.
Replace the motor seals.
Replace the springs.
Replace the seals.
Replace the broken part.
Open and remove the motor
cover, replace the seal, fit the
cover, and thoroughly tighten the
cover locking nut.
Remove the suction tube, replace
the defective seal and reconnect.
Dismantle the non-return valve
and replace the defective seal.
Clean the filter.
Replace the suction seal.
Replace the non-return valve.