48 Dover Fueling Solutions W2940305 Rev 07 8/2019
6.3 Strainer/Filter – DEF Dispensers
DEF dispensers have an optional filter. This filter has a replaceable internal element (similar
to a whole house water filter). The filter is removed by unscrewing the collar at the top of the
filter housing using the filter tool supplied with the dispenser. Unscrew the collar in the CCW
direction (when viewed from under the filter can). Allow the collar to drop down the filter
canister. Remove the filter can to expose the filter element. Remove the filter element from
the canister. Replace it with a new filter. Slide the canister and filter back into place on the
inlet casting. Slide the collar back up the canister and screw back on in a CW direction.
6.4 Cleaning and Corrosion Prevention Instructions
To properly care for your dispenser:
Step 1 Wash the dispenser frequently with a non-abrasive cloth and warm water mixed
with a mild household cleaner such as dishwashing liquid. The dispenser should
then be wiped down with a clean damp cloth.
NOTE: Do not direct pressurized water, even a garden hose, at the dispenser.
NOTE: Do not use all-purpose cleaners on any part of the dispenser. They may
scratch clear plastic, as well as break down the corrosion resistance of
painted and stainless steel surfaces.
NOTE: Do not use gasoline or other petroleum-based products to clean the
dispenser.
Step 2 Exposure to contaminants can cause discoloration of any stainless steel panels. If
the discoloration persists after Step 1, the use of an abrasive powder cleaner can
be used to restore the original shine. Two cleaners in particular are very effective
and practical to use: Zud Heavy Duty Cleaner and Bar Keepers Friend. They can
both be found in most hardware or grocery stores. Follow the manufacturers’
instructions for use and always rub in the direction of the brush finish to prevent
scratching the stainless steel.
Step 3 Periodic waxing (three times per year) of the dispenser surfaces is essential to
maintain the original finish and inhibit corrosion. Painted surfaces should be waxed
with an automotive wax or polish. Stainless steel surfaces should be polished with
a non-abrasive silicone wax.
6.5 Meter Maintenance Issue
For Weights & Measures applications, it is recommended that fuel meters powered by
DFS be periodically checked for acceptable accuracy based on NCWM Handbook 44
under the General Code, G-UR.4 Maintenance Requirements and Liquid Measuring
Device Code, Section 3.30.
If adjustment needs to be made, follow the appropriate prescribed procedure in either
Section 4.7, Meter Check (Calibration) – Enhanced Capacity & Super-High Capacity shall
be made in accordance with G_UR.4 Maintenance Requirements of Handbook 44.
6.6 How to Get Service on Your Pump
Trouble with the installation of this product should be referred to your DFS ASO. An ASO
with a technician number can receive assistance by calling the DFS Support Center at:
1-800-926-3737
Customers, Installers or Distributors who are not an ASO, needing help with the operation or
installation of this product, should contact the DFS Support Center at:
1-800-289-2963 OR support.austin@doverfs.com
Any modification, repair, or service to the dispenser, not in accordance with the original design,
may invalidate compliance with the equipment certifications. Consult manufacturer as
necessary.
CAUTION
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