OPM 250 en-GB 20
© Scania CV AB 2022, Sweden
Starting and running
Reductant pump
When the reductant pump is new, the check
valves may need to be slackened.
There may be 2 reductant pumps: 1 located in the
reductant tank and 1 located between the main
tank for reductant and the buffer tank.
Blow the reductant pump suction nipple with
compressed air (approx. 6 bar) for at least 3 sec-
onds before starting the engine for the first time.
Reset button on the reductant tank
The reductant tank has a reset button that can be
used, for example, when the tank is topped up for
the first time.
When the Scania EEC3 control unit checks fill-
ing, the following applies:
• If you keep the button depressed for 5 sec-
onds, the reductant pump operates for 30 min-
utes. This function can be used, for example,
when the tank is topped up for the first time
or after cleaning.
• If the reductant pump is operating and you
briefly press the button, the pump stops and a
fault code is generated.
The reductant pump can be restarted by
pressing the button, thus also making the
fault code passive.
• If the level does not increase even though the
reductant pump is running, the pump is
switched off and a fault code is generated. If
you briefly press the button, the pump re-
starts.
336 838
Reductant pump suction nipple.