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WILDEN PUMP & ENGINEERING, LLC
WIL-10220-E-02
ACCU-FLO™ ELECTRICAL
CONNECTIONS
ACCU-FLO™ PLUMBING
CONNECTIONS
SECTION 7E – ACCU-FLO™
SUGGESTED OPERATION AND
MAINTENANCE INSTRUCTIONS
OPERATION: The speed of the pump is controlled electrically.
Since each stroke is controlled by an electrical signal, the
pump is ideal for batching and other electrically controlled
dispensing applications.
Although the speed of the pump is controlled electrically, the
air pressure is important. Air pressure displaces the fluid, and
if the pressure is insufficient to complete the physical stroke
before an electronic impulse signals the pump to shift, the
stroke will not be completed, and the displacement per stroke
will be reduced. This does not harm the unit in any way, but
it may cause inaccuracy when attempting to batch specific
quantities with high precision.
The solenoid operated pump is permanently lubricated during
assembly, and requires no additional lubrication under normal
operation. If the unit runs under extreme conditions (continu-
ous operation at high speeds), it may be necessary to relu-
bricate the center block with a
Buna-N compatible NLGI
Grade 2 white EP bearing grease
every 50 million cycles.
Continuous lubrication with a compatible oil is not harmful,
and will provide longer seal life, but it may flush all grease out
of the unit.
A red button on the side of the air valve is a manual override;
when actuated it will shift the valve as if an electric current
had actuated the solenoid.
RECORDS: When service is required, a record should be
made of all necessary repairs and replacements. Over a
period of time, such records can become a valuable tool for
predicting and preventing future maintenance problems and
unscheduled downtime. In addition, accurate records make
it possible to identify pumps that are poorly suited to their
applications.
MAINTENANCE AND INSPECTIONS: Since each applica-
tion is unique, maintenance schedules may be different for
every pump. Frequency of use, line pressure, viscosity and
abrasiveness of process fluid all affect the parts life of a
Wilden pump. Periodic inspections have been found to offer
the best means for preventing unscheduled pump downtime.
Personnel familiar with the pump’s construction and service
should be informed of any abnormalities that are detected
during operation. Internal maintenance is not recommended
for Accu-Flo™ solenoid air valves. When worn or damaged,
a new air valve body, coil or terminal connector must be
purchased. Please consult section 9C for part numbers
