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66605XĆX
GENERAL DESCRIPTION
The ARO diaphragm pump offers high volume delivery even at low air
pressure and a broad range of material compatibility options available.
Refer to the model and option chart. ARO pumps feature stall resistant
design, modular air motor / fluid sections.
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. Ball 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.
Models 666056ĆX and 66605HĆX: The Acetal material used in these
pumps contains Stainless Steel fibers. It's conductivity allows it to be
connected to a suitable ground. A ground screw and ground wire kit is
provided for this.
AIR AND LUBE REQUIREMENTS
A filter capable of filtering out particles larger than 50 microns should
be used on the air supply. There is no lubrication required other than
the O" ring lubricant which is applied during assembly or repair.
If lubricated air is present, make sure that it is compatible with the
Nitrile O" rings in the air motor section of the pump.
OPERATING INSTRUCTIONS
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.
Disconnect the air supply from the pump if it is to be inactive for a few
hours.
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.
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.
Secure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
MAINTENANCE
Certain ARO Smart Parts" are indicated which should be available
for fast repair and reduction of down time.
Provide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during service
disassembly and reassembly.
Keep good records of service activity and include pump in prevenĆ
tive maintenance program.
Service Kits are available to service two separate Diaphragm Pump
functions: 1. AIR SECTION, 2. FLUID SECTION. The Fluid Section
is divided further to match typical active MATERIAL OPTIONS.
DUCKBILL CHECK VALVES (OPTIONAL)
Pump models with the suffix (Ć0CX or Ć0DX) come equipped with duckbill
type checks. Standard duckbill pumps are shipped with the material inlet
in the top and the material outlet on the bottom manifold. To change the
direction of flow, disassemble the pump as instructed in the FLUID SECĆ
TION and reassemble as described below. A pump that was factory built
with balls and seats can be retroĆfitted with duckbill type check valves by
purchasing the necessary parts and installing them as shown.
Reassembly:
The duckbills may be installed in either direction to produce flow from top
to bottom of the pump or from bottom to top of the pump. In either case,
all of the (42) duckbills must point in the same direction.
Flow from Top to Bottom: (see page 5)
1. With (15) fluid caps installed, stand the pump upside down.
2. Place (21) insert into (42) duckbill and slide (41) sleeve over (42)
duckbill.
3. Slide the complete check assembly into the fluid cap bore with the
(21) insert end first. [Duckbills (42) point up.]
4. Position (19) O" ring over (41) sleeve.
5. Attach (35) manifold feet / (36) swivel assembly to the fluid caps.
6. Turn pump over to right side up position.
7. Assemble duckbill check as in step #1.
8. Slide the complete check assembly into the fluid cap bore with the
(41) sleeve end first. [Duckbill is pointing down toward fluid cap cavĆ
ity.]
9. Position (19) O" ring around (21) insert.
10. Attach (34) manifold / (36) swivel assembly to fluid cap.
Flow from Bottom to Top: (Inlet Bottom Ć Outlet Top)
To reverse flow direction, slide check valve assemblies into the (15) fluid
caps backwards from what is indicated in steps #2 and #7. In step #2, the
(42) duckbills will be pointing down and in step #7, they will be pointing
up.
Viton
, Teflon
and Hytrel
are registered trademarks of the DuPont Company
Kynar
is a registered trademark of Penwalt Corp
Flouraz
is a registered trademark of Greene, Tweed & Co. Inc.
Santoprene
is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P.
KeyĆLube
is a registered trademark of Key Industries
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