WILDEN PUMP & ENGINEERING, LLC
8
WIL-11140-E-03
OPERATION: The Turbo-Flo™ pump is is a non lube free
pump and requires lubrication. Wilden suggests an
arctic 5 weight oil (ISO grade 15). Do not over lubricate
the pump. Excessive lubrication will not damage the
pump but will reduce pump performance.
Pump discharge rate can be controlled by limiting the
volume and/or pressure of the air supply to the pump. A
regulator is used to control air pressure while a needle
valve is used to control volume. Pump discharge rate
can also be controlled by throttling the pump discharge
by partially closing a valve in the discharge line of the
pump. This action increases friction loss which reduces
fl ow rate. (See Section 5.) This is useful when the need
exists to control the pump from a remote location.
When the pump discharge pressure equals or exceeds
the air supply pressure, the pump will stop; no bypass
or pressure relief valve is needed, and pump damage
will not occur. The pump has reached a “deadhead”
situation and can be restarted by reducing the fl uid
discharge pressure or increasing the air inlet pressure.
The Pro-Flo
®
and Pro-Flo V™ pumps run solely on
compressed air and do not generate heat, therefore
your process fl uid temperature will not be affected.
MAINTENANCE AND INSPECTIONS: Since each
application is unique, maintenance schedules may be
different for every pump. Frequency of use, line pressure,
viscosity and abrasiveness of process fl uid 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.
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.
Pump will not run or runs slowly.
1. Check air inlet screen and air fi lter for debris.
2.
Disassemble the pump and check for objects which
would obstruct the movement of the internal parts.
3.
Check for sticking air valve piston. If air valve piston
doesn’t move freely, fl ush air valve with solvent.
4.
Check for extreme air leakage (blow by) which would
indicate worn air valve or worn main shaft seals.
5. Check for loose outer piston.
6.
Check type of lubricant being used. A higher
viscosity oil than suggested may cause the piston
to stick or run erratically. Wilden suggests the use of
an oil with arctic characteristics (ISO 15-5 wt.).
Pump runs but little or no product fl ows.
1.
Check for pump cavitation; slow pump speed down
to allow thick material to fl ow into liquid chambers.
2.
Verify that vacuum required to lift liquid is not
greater than the vapor pressure of the material
being pumped (cavitation).
3.
Check for sticking check valves. If material being
pumped is not compatible with pump elastomers,
swelling may occur. Replace check valves with
proper elastomers.
Pump air valve freezes.
1.
Check for excessive moisture in compressed
air. Either install a dryer or hot air generator for
compressed air. Alternatively, a coalescing fi lter may
be used to remove the water from the compressed
air in some applications.
Air bubbles in pump discharge.
1. Check for ruptured diaphragm.
2.
Check tightness of outer pistons (refer to Section 7).
3.
Check tightness of fasteners and integrity of
o-rings and seals, especially at intake manifold.
4. Ensure pipe connections are airtight.
Product comes out air exhaust.
1. Check for diaphragm rupture.
2. Check tightness of outer pistons to shaft.
S U G G E S T E D O P E R A T I O N & M A I N T E N A N C E
T R O U B L E S H O O T I N G
