ARO 66M3X0-XXX-C
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 276-4658
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FAX (800) 266-7016
© 2010 CCN 15321482
www.ingersollrandproducts.com
OPERATOR’S MANUAL 66M3X0-XXX-C
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
RELEASED: 10-22-08
REVISED: 5-6-10
(REV. 05)
3" DIAPHRAGM PUMP
1:1 RATIO (METALLIC)
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.
The original language of this manual is English.
SERVICE KITS
Refer to Model Description Chart to match the pump material op-
tions.
637434 for air section repair (see page 6).
637467-XX for uid section repair (see page 4).
PUMP DATA
Models . . . . . . . . . . . . . . . . . see Model Description Chart for “-XXX”
Pump Type . . . . . . . . . . . . . Metallic Air Operated Double Diaphragm
Material . . . . . . . . . . . . . . . . see Model Description Chart
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.32 lbs (53.67 kgs)
Maximum Air Inlet Pressure . . . . . . . . . . . 120 p.s.i.g. (8.3 bar)
Maximum Material Inlet Pressure . . . . . . 10 p.s.i.g. (0.69 bar)
Maximum Outlet Pressure . . . . . . . . . . . . . 120 p.s.i.g. (8.3 bar)
Maximum Flow Rate ( ooded inlet) . . . 217 g.p.m. (821.3 l.p.m.)
Displacement / Cycle @ 100 p.s.i.g. . . . . 2.08 gal. (7.9 lit.)
Maximum Particle Size . . . . . . . . . . . . . . . . 1” dia. (25.4 mm)
Maximum Temperature Limits (diaphragm / ball / seal material)
E.P.R. / EPDM . . . . . . . . . . . . . . . . . . . -60° to 280° F (-51° to 138° C)
Hytrel® . . . . . . . . . . . . . . . . . . . . . . . . . -20° to 150° F (-29° to 66° C)
Nitrile . . . . . . . . . . . . . . . . . . . . . . . . . . 10° to 180° F (-12° to 82° C)
Santoprene® . . . . . . . . . . . . . . . . . . . -40° to 225° F (-40° to 107° C)
PTFE . . . . . . . . . . . . . . . . . . . . . . . . . . . 40° to 225° F (4° to 107° C)
Viton® . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to 350° F (-40° to 177° C)
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . see page 8
Noise Level @ 70 p.s.i., 60 c.p.m.
c
. . . . . . 86.3 db(A)
d
Noise Level @ 70 p.s.i., 60 c.p.m.
e
. . . . . . 108.7 db(A)
d
c
Tested with 94810 mu er assembly installed.
d
The pump sound pressure levels published here have been updated to
an Equivalent Continuous Sound Level (L
Aeq
) to meet the intent of ANSI
S1.13-1971, CAGI-PNEUROP S5.1 using four microphone locations.
e
Tested with 97116 housing and 97110-2 ball installed. Hearing protec-
tion is recommended when using this product.
NOTICE: All possible options are shown in the chart, however, certain
combinations may not be recommended, consult a representative or
the factory if you have questions concerning availability.
Figure 1
MODEL DESCRIPTION CHART
66M3 X 0 - X X X - C
Center Body Material / Fluid Connection
0 - Aluminum / 3 - 8 NPTF - 2
2 - Aluminum / Rp 3 (3 - 11 BSP parallel)
Ball Material
2 - Nitrile
C - Hytrel
E - Santoprene
Example: Model #66M300-1EB-C
Fluid Section Service Kit # 637467-EB
66M3X0 - X X X - C
Ball Diaphragm
637467 - X X
Fluid Cap & Manifold Material / Hardware
0 - Aluminum / Carbon steel
Diaphragm Material
2 - Nitrile
9 - Hytrel
B - Santoprene
Seat Material
1 - Aluminum
Fluid Section Service Kit Selection
Page 2 of 8 66M3X0-XXX-C (en)
WARNING
EXCESSIVE AIR PRESSURE. Can cause personal
injury, pump damage or property damage.
Do not exceed the maximum inlet air pressure as stated on
the pump model plate.
Be sure material hoses and other components are able to
withstand uid pressures developed by this pump. Check
all hoses for damage or wear. Be certain dispensing device
is clean and in proper working condition.
WARNING
STATIC SPARK. Can cause explosion resulting in
severe injury or death. Ground pump and pumping system.
Sparks can ignite ammable material and vapors.
The pumping system and object being sprayed must be
grounded when it is pumping, ushing, recirculating or spray-
ing flammable materials such as paints, solvents, lacquers,
etc. or used in a location where surrounding atmosphere is
conducive to spontaneous combustion. Ground the dispens-
ing valve or device, containers, hoses and any object to which
material is being pumped.
Use the pump grounding screw terminal provided. Use ARO®
part no. 66885-1 ground kit or connect a suitable ground wire
(12 ga. minimum) to a good earth ground source.
Secure pump, connections and all contact points to avoid
vibration and generation of contact or static spark.
Consult local building codes and electrical codes for spe-
ci c grounding requirements.
After grounding, periodically verify continuity of electrical
path to ground. Test with an ohmmeter from each compo-
nent (e.g., hoses, pump, clamps, container, spray gun, etc.)
to ground to insure continuity. Ohmmeter should show 0.1
ohms or less.
Submerse the outlet hose end, dispensing valve or device
in the material being dispensed if possible. (Avoid free
streaming of material being dispensed.)
Use hoses incorporating a static wire.
Use proper ventilation.
Keep inflammables away from heat, open flames and
sparks.
Keep containers closed when not in use.
WARNING
Pump exhaust may contain contaminants. Can
cause severe injury. Pipe exhaust away from work area and
personnel.
In the event of a diaphragm rupture, material can be forced
out of the air exhaust mu er.
Pipe the exhaust to a safe remote location when pumping
hazardous or in ammable materials.
Use a grounded 3/4” minimum i.d. hose between the pump
and the mu er.
WARNING
HAZARDOUS PRESSURE. Can result in serious
injury or property damage. Do not service or clean pump,
hoses or dispensing valve while the system is pressurized.
Disconnect air supply line and relieve pressure from the
system by opening dispensing valve or device and / or
carefully and slowly loosening and removing outlet hose or
piping from pump.
WARNING
HAZARDOUS MATERIALS. Can cause serious in-
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OPERATING AND SAFETY PRECAUTIONS
READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE.
jury or property damage. Do not attempt to return a pump
to the factory or service center that contains hazardous
material. Safe handling practices must comply with local
and national laws and safety code requirements.
Obtain Material Safety Data Sheets on all materials from
the supplier for proper handling instructions.
WARNING
EXPLOSION HAZARD. Models containing alu-
minum parts cannot be used with 1,1,1-trichloroethane,
methylene chloride or other halogenated hydrocarbon
solvents which may react and explode.
Check pump motor section, fluid caps, manifolds and all
wetted parts to assure compatibility before using with sol-
vents of this type.
WARNING
MISAPPLICATION HAZARD. Do not use models
containing aluminum wetted parts with food products
for human consumption. Plated parts can contain trace
amounts of lead.
CAUTION
Verify the chemical compatibility of the pump
wetted parts and the substance being pumped, ushed or
recirculated. Chemical compatibility may change with tem-
perature and concentration of the chemical(s) within the
substances being pumped, flushed or circulated. For spe-
ci c uid compatibility, consult the chemical manufacturer.
CAUTION
Maximum temperatures are based on mechanical
stress only. Certain chemicals will signi cantly reduce max-
imum safe operating temperature. Consult the chemical
manufacturer for chemical compatibility and temperature
limits. Refer to PUMP DATA on page 1 of this manual.
CAUTION
Be certain all operators of this equipment have
been trained for safe working practices, understand it’s
limitations, and wear safety goggles / equipment when re-
quired.
CAUTION
Do not use the pump for the structural support of
the piping system. Be certain the system components are
properly supported to prevent stress on the pump parts.
Suction and discharge connections should be exible con-
nections (such as hose), not rigid piped, and should be
compatible with the substance being pumped.
CAUTION
Prevent unnecessary damage to the pump. Do
not allow pump to operate when out of material for long
periods of time.
Disconnect air line from pump when system sits idle for
long periods of time.
CAUTION
Use only genuine ARO replacement parts to as-
sure compatible pressure rating and longest service life.
NOTICE
Replacement warning labels are available upon
request: “Static Spark (93616-1) & Diaphragm Rupture”
(93122).
WARNING
= Hazards or unsafe practices which
could result in severe personal injury,
death or substantial property damage.
CAUTION
= Hazards or unsafe practices which
could result in minor personal injury,
product or property damage.
NOTICE
= Important installation, operation or
maintenance information.
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EXCESSIVE AIR PRESSURE
STATIC SPARK
HAZARDOUS MATERIALS
HAZARDOUS PRESSURE
66M3X0-XXX-C (en) Page 3 of 8
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Hytrel® and Viton® are registered trademarks of the DuPont Company
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Loctite® is a registered trademark of Henkel Loctite Corporation
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Santoprene® is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P.
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ARO® is a registered trademark of Ingersoll-Rand Company
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262™, 271™ and 572™ are trademarks of Henkel Loctite Corporation
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MAINTENANCE
Refer to the part views and descriptions as provided on pages 4
through 7 for parts identi cation and service kit information.
Certain ARO “Smart Parts” are indicated which should be avail-
able for fast repair and reduction of down time.
Service kits are divided to service two separate diaphragm
pump functions: 1. AIR SECTION, 2. FLUID SECTION. The Fluid
Section is divided further to match typical part Material Op-
tions.
Provide a clean work surface to protect sensitive internal mov-
ing parts from contamination from dirt and foreign matter dur-
ing service disassembly and reassembly.
Keep good records of service activity and include the pump in
preventive maintenance program.
Before disassembling, empty captured material in the outlet
manifold by turning the pump upside down to drain material
from the pump.
FLUID SECTION DISASSEMBLY
Remove top manifold(s).
Remove (22) balls, (19) “O” rings and (21) seats.
Remove (15) uid caps.
4. Remove the (14) screw, (6) washer, (7) diaphragms, (196) cush-
ion and (5) washer.
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.
FLUID SECTION REASSEMBLY
Reassemble in reverse order.
Clean and inspect all parts. Replace worn or damaged parts
with new parts as required.
Lubricate (1) diaphragm rod and (2) “O” ring with Key-Lube “O”
ring lube.
Use ARO pn / 98931-T bullet (installation tool) to aid in installa-
tion of (2) “O” ring on (1) diaphragm rod.
Be certain (7) diaphragms align properly with (15) uid caps be-
fore making nal torque adjustments on bolt and nuts to avoid
twisting the diaphragms.
Re-check torque settings after the pump has been re-started
and run a while.
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1.
2.
3.
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GENERAL DESCRIPTION
The ARO diaphragm pump o ers high volume delivery even at low
air pressure and a broad range of material compatibility options are
available. Refer to the model and option chart. ARO pumps feature
stall resistant design, modular air motor / uid sections.
Air operated double diaphragm pumps utilize a pressure di eren-
tial in the air chambers to alternately create suction and a positive
uid pressure in the uid chambers, valve checks insure a positive
ow of uid.
Pump cycling will begin as air pressure is applied and will continue
to pump and keep up with the demand. It will build and maintain
line pressure and will stop cycling once maximum line pressure is
reached (dispensing device closed) and will resume pumping as
needed.
AIR AND LUBE REQUIREMENTS
WARNING
EXCESSIVE AIR PRESSURE. Can cause pump dam-
age, personal injury or property damage.
A lter capable of ltering out particles larger than 50 microns
should be used on the air supply. There is no lubrication re-
quired 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 “O” rings and seals in the air motor section of the pump.
OPERATING INSTRUCTIONS
Always ush the pump with a solvent compatible with the ma-
terial 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 sup-
ply, 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 forced-feed ( ooded
inlet) situation, it is recommended that a “check valve” be in-
stalled at the air inlet.
Secure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
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