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PD02PĆX
GENERAL DESCRIPTION
The ARO diaphragm pump offers high volume delivery even at low air
pressures, easy self priming and the ability to pump various viscosity
materials. The pump is designed to correspond to the needs of the user
by offering a variety of wetted parts configurations to handle almost any
application.
Air operated double diaphragm pumps utilize a pressure differential in
the air chambers to alternately create suction and positive fluid pressure
in the fluid chambers. Flat checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to
pump and keep up with the demand. It will build and maintain line presĆ
sure and will stop cycling once maximum line pressure is reached (disĆ
pensing device closed) and will resume pumping as needed.
Model PD02PĆXDSĆDTX: The Acetal material used in this pump conĆ
tains Stainless Steel fibers. It's conductivity allows it to be connected to a
suitable ground. A ground screw is provided for this.
AIR AND LUBE REQUIREMENTS
WARNING
EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
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A filter capable of filtering out particles larger than 50 microns should
be used on the air supply. In most applications there is no lubrication
required other than the O" ring lubricant which is applied during asĆ
sembly or repair.
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The pump can be rotated 360
_
to suit the application. It may be
mounted upside down or on the wall with no effect on suction lift or
operating efficiency. The filter and regulator need to be oriented in a
normal vertical direction to function properly.
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Pipe plugs are included for the material inlets. They can be switched
to accommodate piping requirements. However, the fluid inlet must
always be in the port closest to the mounting base.
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When lubricated air is necessary, supply the air lubricator with a
good grade of SAE 90 wt. nonĆdetergent oil and set the lubricator to
a rate not to exceed one drop per minute.
INSTALLATION
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NOTICE: ReĆtorque fasteners prior to use. Refer to step #18 on
page 6 for information.
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Apply Teflon tape or pipe sealant to threads upon assembly to preĆ
vent leakage.
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Secure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
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To avoid problems, install a particle fluid filter to screen out foreign
matter 1/32" (0.79 mm) or larger in diameter.
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The pump is not recommended for submerged applications.
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When the diaphragm pump is used in a forcedĆfeed (flooded inlet)
situation, it is recommended that a Check Valve" be installed at the
air inlet.
OPERATING INSTRUCTIONS
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Always flush the pump with a solvent compatible with the material
being pumped, if the material being pumped is subject to ``setting up"
when not in use for a period of time.
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Disconnect the air supply from the pump if it is to be inactive for a few
hours.
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The outlet material volume is governed not only by the air supply, but
also by the material supply available at the inlet. The material supply
tubing should not be too small or restrictive. Be sure not to use hose
which might collapse.
MAINTENANCE
Refer to the part list on page 4 for Service Kit Information, parts view on
page 5 and Repair Procedures on page 6.
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Certain ARO Smart Parts" are indicated which should be available
for fast repair and reduction of down time.
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Service kits are divided to service two separate diaphragm pump
functions: 1. Air Section, 2. Fluid Section. The Fluid Section is dividĆ
ed further to match typical part Material Options.
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Provide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during service
disassembly and reassembly.
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Keep good records of service activity and include pump in prevenĆ
tive maintenance program.
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Teflon
R
is a registered trademark of the DuPont Company,
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Kynar
R
is a trademark of Penwalt Corp.,
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Santoprene
R
is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P.
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Lubriplate
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is a registered trademark of Lubriplate Division (Fiske Brothers)
