TEFEN Advanced Plastic Solutions.
TEFEN
8
Routine Maintenance
Regularly clean the water filter at the injector inlet and the fertilizer suction filter.
If its planned not to operate the injector for a long period, operate the injector for a few minutes
with the metering tube immersed in a tank with clean water to remove fertilizer residues from the
injector preventing them solidifying in the injector.
If there is fear of frost and the temperature falling below 4°C (39°F) empty the water from the
injector. To do this, close the entry and exit valves securely. Open and dismantle the 3/4" record
that connects the suction pipe. Press the suction check valve using a finger or a thin rod, allowing
all the water that has collected in the injector to drain out while pressing the air release valve at
the top of the injector.
Troubleshooting Guide
Problem Check Solution
The injector is fitted with the arrows in the
opposite direction to the water flow.
Fit The injector with the arrows in
the direction of the water flow.
The inlet and outlet valves are closed. Open the valves
The inlet filter is blocked. Clean the filter.
The injector does not
work
There is no water flow at the appropriate
pressure.
Open the main valve.
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.
Replace the motor seals.
Check if the springs are broken. Replace the springs.
Check if the seals above the valves are
defective or have been displaced.
Replace the seals.
The injector has
stopped working
Check if one of the parts of the mechanism
is broken.
Replace the broken part.
The leak is from the connection between the
body and the cover.
Open and remove the motor
cover, replace the seal, fit the
cover, and thoroughly tighten the
cover locking nut.
The leak is from the connection of the
suction tube.
Remove the suction tube, replace
the defective seal and reconnect.
There is a leak from
the injector.
The leak is from the non-return valve. Dismantle the non-return valve
and replace the defective seal.
The suction filter is blocked. Clean the filter.
Dismantle the injector unit and check if the
suction seal is defective.
Replace the suction seal.
There is no suction.
The non-return valve is defective. Replace the non-return valve.
