Express 4500 V8-6.0L (2010)
1. Turn the main function switch to the CODE position.
Note:
*
If power is interrupted prior to the recording of the seven-character code, the code will be lost and the flow rate test will need to be repeated.
*
The flow test must run for a minimum of 8-10 seconds and be above 0.5 GPM for a code to be generated.
2. Record TESTED flow rate, temperature, cycle and seven-character flow code information on repair order.
Clean-up
1. Turn the main function switch (2) to the IDLE position and allow the supply vessel pressure to dissipate.
2. Turn the main power switch (1) to the OFF position.
Note: A small amount of water may drain from the bottom of the unit when the air supply is disconnected. This is a normal operation of the
built-in water separator.
3. Disconnect the supply and waste hoses and the 12-volt power source from the vehicle.
