7 Maintenance
72 WU017834 Rev. 05 July 2023 Wayne Fueling Systems | Dover Fueling Solutions
7.7 FILTER / STRAINER - SUCTION
The filter should be changed and the strainer cleaned on a regular basis. A dirty filter and strainer may
cause the dispenser to deliver fuel slowly. In some cases, this may appear to be a more serious service
related problem, when simply changing the filter and cleaning the strainer is all that is required.
The fuel filter is removed the same way an oil filter is removed from a car engine. As shown below, the new
fuel funnel catches any fuel that is spilled and will properly drain it into a container. Place a container under
the funnel spout when changing the filter.
To install the new filter, first apply a film of oil to the gas-
ket and hand turn until the gasket contacts the base.
Then tighten one half turn. Open the emergency shear
valve, turn the submersible circuit breaker ON and check
for leaks.
In new installations it may be necessary to change the fil-
ter frequently in the first few days of operation in order to
ensure proper operation.
The strainer is located inside the casting and held in
place by the filter. Place a suitable container below filter/
strainer casting to catch product and sediment. Remove
the filter and gently pull the strainer out of the filter/
strainer casting. Clean strainer screen of any debris.
Reinstall strainer and a new filter.
If the underground installation is new, it may be neces-
sary to clean the strainer screen two or three times the
first few days of operation to remove debris and pipe
dope. After this, occasional cleaning of the strainer is all
that should be required. The fuel filter should be changed
whenever the strainer is cleaned.
NOTE! Replacement fuel filters should be UL-recog-
nized. The recommended gasoline and etha-
nol fuel filters are rated at 10 micron.
NOTE! On E85 dispenser models, use strainer cartridges marked “E85” manufactured by Central Illinois Mfg.
Loosen the four screws and rotate the cover. Remove the cover and the attached filter. Replace the filter and
reinstall the cover.
Electric Shock Hazard!
Before removing the filter and strainer turn the power OFF to the dis-
penser. Failure to do so may result in a hazardous condition that can
result in serious injury.
Figure 7-2 Suction Filter/Strainer Casting
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