Dynojet Compressed Air Air/Fuel Ratio Module - Manual (Page 16)

Compressed Air Air Fuel Ratio Module Installation and User Guide
C H A P T E R 1
Compressed Air Pump Assembly
1-12
A DJUSTING THE A IR F LOW
To ensure accurate readings, adjust the air flow as necessary to maintain 35L/min. If
you are unable to adjust the air flow to 35L/min., clean the pump then try to adjust
the air flow again. Refer to “Pump Maintenance—Stand Alone” on page 2-8 for more
information.
Adjust the air flow at the end of each exhaust probe to 35 L/min.
1
Attach six inches of the silicon tubing from the top port on the flow meter to the
copper sample tube.
2 Loosen the lock nut.
3 Turn the ball valve to the open position or turn on the air pump using the control
panel.
4 Rotate the vacuum generator exhaust port until the flow meter reads
35 L/min.
5 Tighten the lock nut.
Note: Make sure not to rotate the vacuum generator exhaust port when
tightening the lock nut.
6 Remove air flow meter and the six inches of silicon tube.
Note: Periodically check the air flow and adjust as necessary to maintain 35 L/min.
Figure 1-8: Adjusting the Air Flow—Stand Alone
lock nut
copper sample
tube
flow meter
sensor
vacuum generator
exhaust port
silicon tube