WIL-17100-E-02
15
WILDEN PUMP & ENGINEERING, LLC
Prior to pump installation, ensure that the flow and
suction lift requirements are within the pump model’s
capabilities. Refer to the Section 5, Performance of the
Engineering, Operation and Maintenance (EOM) Manual
for specific flow and suction-lift capabilities.
Before installation confirm that the pump materials of
construction are compatible with pumping application.
Refer to the Wilden Chemical Resistance Guide for
assistance with wetted path and elastomer options.
PIPING: The pump should be located so that the length
and complexity of the suction and discharge piping is
minimized. Unnecessary elbows, bends and fittings can
increase friction losses and should be avoided.
Pipe sizes should be selected to keep friction losses
within practical limits. The suction pipe diameter should
be equivalent or larger than the diameter of the suction
inlet on your Wilden pump. The suction hose must be non-
collapsible, reinforced type as these pumps are capable of
pulling a high vacuum. Discharge piping should also be
the equivalent or larger than the diameter of the pump
discharge to help reduce friction losses.
All piping should be supported independently of the
pump. In addition, the piping should be correctly aligned
with the inlet and discharge connection of the pump to
avoid placing stress on the pump fittings. Flexible hose
can be installed to aid in absorbing the forces created by
the natural reciprocating action of the pump and will also
assist in minimizing pump vibration.
GAS SUPPLY: The pump should have a supply line large
enough (a 3/4” supply line is recommended for 1-1/2” and
larger pumps) to supply the volume of air necessary to
achieve the desired pumping rate. Gas pressure to the
pump should be controlled by a pressure-regulating valve
and should not exceed a maximum of 6.9 bar (100 psig).
It is suggested that a needle valve be placed in the supply
line to control the flow of gas to the pump. For best results,
a 5μ (micron) filter should be installed before the gas inlet
of the pump to eliminate the majority of compressed gas
line contaminants.
TYPE OF GAS: Sweet gas is highly recommended for
natural gas-powered pumps. Please consult the factory if
considering using sour gas as levels of hydrogen sulfide
(H2S) may cause unacceptable corrosion and chemical
attack.
PUMP MOUNTING AND INSTALLATION: For simple
installation and removal of the pump shut-off valves
should be installed in the inlet and discharge plumbing.
If the pump is to be mounted in a fixed location, a mounting
pad placed between the pump and the foundation will
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 (SD Equalizer®) should be installed to
protect the pump, piping and gauges from surges and
water hammer.
SOLIDS PASSAGE: All Wilden pumps are capable of
passing solids. A strainer should be used at the inlet of the
pump to ensure that the pump’s rated solids capabilities
are not exceeded. Refer to the Section 5 of this EOM
manual for specific solids-passage capabilities.
FLOODED SUCTION: Pumps in service with a positive
suction head are most efficient when the inlet pressure is
limited to 0.5–0.7 bar (7–10 psig). Premature diaphragm
failure may occur if positive suction is 0.7 bar (10 psig)
or higher.
SUCTION LIFT: When used in self-priming applications, it
is critical that all fittings and connections are airtight or a
reduction or loss of pump suction capability will result.
GAS OUTLET: All CSA-certified pumps are fitted with the
single point exhaust option so that all exhaust gases are
routed through the muffler plate exhaust port. The gas
outlet must be recaptured or vented to a safe location
in accordance with locally, nationally and/or industry
recognized codes. The standard Wilden muffler supplied
with CSA-certified pumps will reduce sound levels below
OSHA specifications but may not comply with regulatory
codes for recapturing or venting exhaust gases.
GROUNDING: Pumps and accessories must be electrically
grounded to a proper grounding point to prevent an
accumulation of electro-static charge when used in
potentially explosive areas. CSA-certified pumps come
with a grounding strap and are fitted with a grounding
screw for the purpose of electrically grounding the
pump. Periodic inspection of the ground connection
should be performed to ensure the equipment is properly
grounded. Refer to the Wilden CE Safety Supplement
and Safety Manual for additional ATEX-certified pump
considerations.
FUNCTIONAL TESTING:
1. Tighten all hardware prior to initial start-up. Refer to
Section 7, Reassembly Hints & Tips in the EOM manual
for torque specifications.
2. Prior to pump installation connect compressed gas line
[do not exceed rated pressure of 6.9 bar (100 psig)] to
inlet of pump to ensure that pump cycles consistently.
3. Cycle pump for 2-3 minutes.
4. After pump installation, check piping connections for
leaks.
PUMP OPERATION:
1. To avoid damage to the pump new installations should
be checked for any debris in tank or piping system.
2. Once installation is complete, pump operation can be
started. Confirm the shut-off valves in the inlet and
discharge plumbing are open. Opening the gas shut-
off valve [do not exceed the pump’s maximum rated
pressure of 6.9 bar (100 psig)]. The pressure regulating
valve and needle valve can be used to adjust the speed
of the pump.
3. Retighten all exposed fasteners after two (2) hours of
operation. Refer to Section 7, Reassembly Hints & Tips
in the EOM manual for torque specifications.
S e c t i o n 6
C S A - C E R T I F I E D P U M P S U G G E S T E D I N S T A L L A T I O N