PureFlow AirDog DF-200 - GM Duramax 2001-2010 - Manual (Page 18)

18
PureFlow AirDog
AirDog
®
II Demand Flow 2001-2010 DuraMax Diesel
Section 7 Initial Startup Procedures
INITIAL START PROCEDURE
The AirDog
®
II is a self priming system, however, to prevent potential damage and reduce the
life expectancy of the system, it is recommended to pre-fill only the water separator with diesel
fuel before initial startup.
7-1. Fill the water separator with diesel fuel.
7-2. Turn the starter key to the on/run position.
7-3. While the AirDog
®
II is operating, bleed the air from the fuel line to the engine by
loosening the fuel line connection at the engine fitting. As soon as the line is purged of air
and pure fuel is observed, properly tighten the fuel fitting.
NOTE: put a rag or shop
towel over and around fitting to prevent splatter. Catch all spilled fuel and dispose of
properly.
7-4. Start the engine!
RECHECK ALL FUEL FITTINGS FOR LEAKAGE AND PROPERLY TORQUE. BE
SURE ALL FUEL LINES ARE PROPERLY ROUTED TO PROTECT FROM
EXCESSIVE HEAT AND SECURED TO PROTECT FROM CHAFFING AND
ABRASION. RECHECK ALL ELECTRICAL LINES, SECURE AS NECESSARY.
Checking Pump Noise!
NOTE: Each AirDog
®
II has been manufactured in a Quality Controlled process and fully tested
for operation and performance before shipment. This is a very quiet and smooth running system.
With fuel or air alone, the AirDog®II fuel pump will run very quietly. However, if any fuel
fitting on the vacuum side, between the fuel tank and the AirDog
®
II or the water separator, has
been left loose during the installation process, the system may suck air at an excessive rate and
will be very noisy. To check for this problem, unscrew the water separator 3 or 4 full turns and
activate the AirDog
®
II by turning the ignition switch to on. If the AirDog
®
II runs quietly, then
excessive air from a loose fitting or leaking pre-filter seal is most likely the reason for the
excessive noise. Correct as necessary.
A.
The seal groove in the 3” filter is a snug fit and on occasion the seal has been found to not
be fully seated. Remove the water separator; remove the seal from the top of the nut
plate. Clean and lubricate the seal grove. Carefully replace the seal in the groove. Be
sure to fully seat the seal.
B. Check the fittings, especially the quick connect at the tank.