15
WILDEN PUMP & ENGINEERING, LLC
WIL-10260-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 (continuous operation at high speeds), it may
be necessary to relubricate the center block with a
Buna-N
compatible NLGI Grade 2 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 over-
ride; 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.
