FUEL PRO
®
483
TECHNICAL MANUAL
T e c h n o l o g y , L L C
9
DAVCO Technology, LLC P. O. Box 487 Saline, MI 48176 800-328-2611 www.davco.com F1305 REV F
1 . Check to make sure the drain valve at the base of the
Fuel Pro is closed . Remove the vent cap .
2 . Fill the clear cover with clean diesel fuel until it reaches
the top of the filter .
3 . Install the vent cap . Tighten it by hand until it clicks .
4 . Start the engine and run for one minute . Open the vent
cap and allow the fuel to drop to about one inch above
the collar . Close the vent cap . Tighten it by hand until it
clicks .
5 . Check for any possible leaks . It is normal for the fuel
level to vary after the initial start-up and during engine
operation . Filter performance is not affected .
The Fuel Pro 483 12VDC electric preheater or 120VAC
electric overnight heater is installed in the side of the fuel
processor .
Note:
The drawing below reflects the left side Fuel In/Fuel
Out configuration . Fuel In is also available on the right side .
120VAC Heater Port
12VDC Heater Port
1 . Drain all the fuel from the Fuel Pro . The fuel can be
reused after the heater is installed . If the fuel is not
reused, dispose of it in an environmentally safe way .
2 . Remove the pipe plug from the Fuel Pro body .
3 . Apply liquid thread sealant to the pre-heater threads
and install the pre-heater into the Fuel Pro body .
Tighten to 15-30 ft-lbs .
4 . Connect the wire harness to the heater and route to a
location where it can be plugged into a 120VAC outlet .
5 . Check to make sure the drain valve at the base of the
Fuel Pro is closed .
6 . Fill the clear cover with clean diesel fuel until it reaches
the top of the filter .
7 . Install the vent cap . Tighten it by hand until it clicks .
8 . Start the engine and run for one minute . Open the vent
cap and allow the fuel to drop to about one inch above
the collar . Close the vent cap . Tighten it by hand until
it clicks .
9 . Check for any possible leaks . It is normal for the fuel
level to vary after the initial start-up and during engine
operation . Filter performance is not affected .
120VAC ELECTRIC OVERNIGHT HEATER INSTALLATION
PRIMING THE FUEL SYSTEM
Summary of Contents for FUEL PRO 483
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