WIL-10252-E-01
Wilden
®
11
Suggested Installation, Operation, Maintenance and Troubleshooting
The Model T15 Metal pump has a 76 mm (3") inlet and 76 mm (3") outlet
and is designed for flows to 878 lpm (232 gpm). TheT15 Metal pump is
manufactured with wetted parts of aluminum, cast iron or 316 Stainless Steel.
The center block of the T15 Metal is constructed of glass-filled polypropylene,
aluminum, nickel-plated aluminum, PTFE-coated aluminum or 316 Stainless
Steel. A variety of diaphragms, valve balls, and o-rings are available to satisfy
temperature, chemical compatibility, abrasion and flex concerns.
The suction pipe size should be at least 76 mm (3") diameter or larger if
highly viscous material is being pumped. The suction hose must be non-
collapsible, reinforced type as the T15 is capable of pulling a high vacuum.
Discharge piping should be at least 76 mm (3"); larger diameter can
be used to reduce friction losses. It is critical that all fittings and connections
are airtight or a reduction or loss of pump suction capability will result
.
Installation
Months of careful planning, study, and selection efforts can result in
unsatisfactory pump performance if installation details are left to chance.
Premature failure and long term dissatisfaction can be avoided if
reasonable care is exercised throughout the installation process.
Location
Noise, safety, and other logistical factors usually dictate that “utility”
equipment be situated away from the production floor. Multiple
installations with conflicting requirements can result in congestion of
utility areas, leaving few choices for siting of additional pumps.
Within the framework of these and other existing conditions, every pump
should be located in such a way that four key factors are balanced
against each other to maximum advantage.
• Access: First of all, the location should be accessible. If it’s easy to reach
the pump, maintenance personnel will have an easier time carrying out
routine inspections and adjustments. Should major repairs become
necessary, ease of access can play a key role in speeding the repair process
and reducing total downtime.
• Air Supply: Every pump location should have an air line large enough to
supply the volume of air necessary to achieve the desired pumping rate (see
pump performance chart). Use air pressure up to a maximum of 8.6 bar (125
psig) depending upon pumping requirements. The use of an air filter before
the pump will ensure that the majority of any pipeline contaminants will be
eliminated. For best results, the pumps should use an air filter, regulator, and
lubricator system.
• Elevation:
Selecting a site that is well within the pump’s suction lift
capability will assure that loss-of-prime troubles will be eliminated. In
addition, pump efficiency can be adversely affected if proper attention is
not given to elevation (see pump performance chart).
• PIPING:
Final determination of the pump site should not be made until
the piping problems of each possible location have been evaluated. The
impact of current and future installations should be considered ahead of
time to make sure that inadvertent restrictions are not created for any
remaining sites.
The best choice possible will be a site involving the shortest and
the straightest hook-up of suction and discharge piping.
Unnecessary elbows, bends, and fittings should be avoided.
Pipe sizes should be selected so as to keep friction losses within
practical limits. All piping should be supported independently of
the pump. In addition, it should line up without placing stress on
the pump fittings.
Expansion joints can be installed to aid in absorbing the forces
created by the natural reciprocating action of the pump. If the
pump is to be bolted down to a solid foundation, a mounting pad
placed between the pump and foundation will assist in
minimizing pump vibration. Flexible connections between the
pump and rigid piping will also assist in minimizing pump
vibration. If quick-closing valves are installed at any point in the
discharge system, or if pulsation within a system becomes a
problem, a surge suppressor should be installed to protect the
pump, piping and gauges from surges and water hammer.
When pumps are installed in applications involving flooded
suction or suction head pressures, a gate valve should be
installed in the suction line to permit closing of the line for pump
service.
The T15 can be used in submersible applications only when
both wetted and non-wetted portions are compatible with the
material being pumped. If the pump is to be used in a
submersible application, a hose should be attached to the
pump’s air exhaust and the exhaust air piped above the liquid
level.
If the pump is to be used in a self-priming application, be sure
that all connections are airtight and that the suction lift is within
the pump’s ability. Note: Materials of construction and elastomer
material have an effect on suction lift parameters. Please refer
to pump performance data.
Pumps in service with a positive suction head are most efficient
when inlet pressure is limited to 0.5–0.7 bar (7–10 psig).
Premature diaphragm failure may occur if positive suction is
0.8 bar (11 psig) and higher.
THE MODEL T15 WILL PASS 10 mm (3/8") SOLIDS. THE T15
STALLION WILL PASS 25 mm (1") SOLIDS. WHENEVER THE
POSSIBILITY EXISTS THAT LARGER SOLID OBJECTS MAY
BE SUCKED INTO THE PUMP, A STRAINER SHOULD BE
USED ON THE SUCTION LINE.
CAUTION: DO NOT EXCEED 8.6 BAR (125 PSIG) AIR
SUPPLY PRESSURE.
BLOW OUT AIR LINE FOR 10 TO 20 SECONDS BEFORE
ATTACHING TO PUMP TO MAKE SURE ALL PIPE LINE
DEBRIS IS CLEAR. ALWAYS USE AN IN-LINE AIR FILTER.
PUMPS SHOULD BE THOROUGHLY FLUSHED WITH
WATER BEFORE INSTALLING INTO PROCESS LINES. FDA
AND USDA PUMPS SHOULD BE CLEANED AND/OR
SANITIZED BEFORE USE ON EDIBLE PRODUCTS.
CAUTION: DO NOT HANG T15 STALLION PUMPS BY
THEIR HANDLES.
Section 6
