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WILDEN PUMP & ENGINEERING, LLCWIL-10230-E-02
POWER
SUPPLY
REPEAT
CYCLE
TIMER
RELAY
SWITCHED (CONTROL) CONNECTION
GROUND (SAFETY) CONNECTION
COMMON CONNECTION
FLICKER MODE RELAY OR BATCH CONTROLLER
*
*
*
*
*
FLUID INLET
FLUID OUTLET
DISCHARGE
SHUTOFF VALVE
COMBINATION FILTER AND REGULATOR
FLEXIBLE CONNECTION
AIR SUPPLY
SUCTION LINE
DISCHARGE LINE
AIR INLET
FLEXIBLE CONNECTION
INTAKE
SHUTOFF VALVE
FLEXIBLE
CONNECTION
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 relubri-
cate 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 application
is unique, maintenance schedules may be different for every
pump. Frequency of use, line pressure, viscosity and abrasive-
ness 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 opera-
tion. 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.
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