Ingersoll-Rand ARO 6661AX-X-C User Manual

OPERATOR’S MANUAL

INCLUDING: OPERATION, INSTALLATION & MAINTENANCE

1” DIAPHRAGM PUMP

1:1 RATIO (NON-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.

SERVICE KITS

Refer to the Model Description Chart tomatch the pump material options.
637118-C for Air Section repair (see page 6).
637161-XX-C for Fluid Section repair (see page 4).

PUMP DATA

6661AX-X-C

RELEASED: 9-11-89
REVISED:
(REV.

11-13-10

U)

Models See Model Description Chart for “-XXX”.......

Pump Type Non-Metallic, Air Operated, Double Diaphragm...

Material See Model Description Chart.......

Weight 6661A3

-, 1AF-, 1AJ-, 1AL- 20.25 lbs (9.19 kgs)...

-, 1AR-, 1AS-, 1AT - 20.25 lbs (9.19 kgs)..

6661AP

-, 1AG-, 1AK-, 1AN- 28.5 lbs (12.93 kgs)..

6661A4

-, 1BF-, 1BJ-, 1BL- 28.8 lbs (13.06 kgs)...

6661B3

-, 1BR-, 1BS-, 1BT- 28.8 lbs (13.06 kgs)..

6661BP

-, 1BG-, 1BK-, 1BN- 37 lbs (16.78 kgs)..

6661B4

Maximum Air Inlet Pressure 120 p.s.i. (8.3 bar)........

Maximum Material Inlet Pressure 10 p.s.i. (0.69 bar)....

Maximum Outlet Pressure 120 p.s.i. (8.3 bar).........

Maximum Flow Rate

(flooded inlet) 47 g.p.m. (177.9 l.p.m.)....

Displacement / Cycle @ 100 p.s.i.g. 0.17 gal. (0.64 lit.)..
Maximum Particle Size (semi-solids) 1/8” dia. (3.2 mm)...
Maximum Temperature Limits

Polypropylene 35_ to 175_ F(2_ to 79_ C).....

PVDF (Kynar) 10_ to 200_ F(-12_ to 93_ C).....

Dimensional Data see page 8...............

Noise Level @ 70 p.s.i. - 60 c.p.m.{ 64.5db(A)|..

{ Tested with 93110 muffler installed.
| The pump sound pressure levels published here have been updated to an Equivalent

Continuous Sound Level (L
ROP S5.1 using four microphone locations.

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.

) to meet the intent of ANSI S1.13-1971, CAGI-PNEU-

Aeq

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 pres­sure and will stop cycling once maximum line pressure is reached (dis­pensing device closed) and will resume pumping as needed.

6661XJ-XXX-C
6661XK-XXX-C

6661XL-XXX-C
6661XN-XXX-C
6661XS-XXX-C
6661XT-XXX-C

6661X3-XXX-C
6661X4-XXX-C
6661XP-XXX-C

6661XF-XXX-C
6661XG-XXX-C
6661XR-XXX-C

MODEL DESCRIPTION CHART

6661 X X -X X X -C

CENTER BODY MATERIAL

A - Aluminum B - Cast Iron

FLUID CAP / MANIFOLD MATERIAL

3 - Colorless Polypropylene flange (3-piece manifold)
4 - PVDF (Kynar
F - Colorless Polypropylene flange (one piece manifold)
G - PVDF (Kynar) flange (one piece manifold)
J - Colorless Polypropylene, N.P.T. (one piece manifold)
K - PVDF (Kynar), N.P.T. (one piece manifold)
L - Colorless Polypropylene, B.S.P.(one piece manifold)
N - PVDF (Kynar), B.S.P. (one piece manifold)
P - Gray Polypropylene flange (3-piece manifold)
R - Gray Polypropylene flange (one piece manifold)
S - Gray Polypropylene, N.P.T. (one piece manifold)
T - Gray Polypropylene, B.S.P. (one piece manifold)

SEAT MATERIAL

2 - 316 Stainless Steel 4 - PVDF (Kynar)
3 - Polypropylene 8 - Hard 440 Stainless Steel

BALL MATERIAL

1 - Neoprene 8 - Polyurethane
2 - Nitrile A - 316 Stainless Steel
3 - Viton
4 - PTFE M - Medical Grade Santoprene
5 - E.P.R.

DIAPHRAGM MATERIAL

1 - Neoprene 3 - Viton 9 - HytrelR
2 - Nitrile 5 - E.P.R. B - Santoprene
4 - PTFE / Santoprene M - Medical Grade Santoprene

FLUID SECTION SERVICE KIT SELECTION

EXAMPLE: MODEL # 6661A3-311-C
FLUID SECTION SERVICE KIT # 637161-11-C

R) flange (3-piece manifold)

R E - SantopreneR

6661XX - X X X -C

637161 - X X - C

Figure 1

DIAPHRAGMBALL

INGERSOLL RAND COMPANY

209 NORTH MAIN STREET -- BRYAN, OHIO 43506

)$;

www.ingersollrandproducts.com

E2010

CCN 81660326

OPERATING AND SAFETY PRECAUTIONS

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READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE.

EXCESSIVE AIR PRESSURE
STATIC SPARK

WARNING

damage, personal injury or property damage.
Be sure material hoses and other components are able to with­stand fluid pressures developed by this pump. Check all hoses
for damage or wear. Be certain dispensing device is clean and
in proper working condition.
Do not exceed the maximum inlet air pressure asstated on the
pump model plate.

WARNING

severe injury or death. Ground pump and pumping system.
Sparks can ignite flammable material and vapors.
The pumping system and object being sprayed must be
grounded when it is pumping, flushing,recirculating or spray­ing flammable materials such as paints, solvents, lacquers,
etc. or used in a location where surrounding atmosphere is
conducive to spontaneous combustion. Ground the dispens­ing valve or device, containers, hoses and any object to which
material is being pumped.
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 specific
grounding requirements.
Aftergrounding, periodically verify continuity of electrical path
to ground. Test with an ohmmeter from each component (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

causesevere injury.Pipe exhaust away from work area and per­sonnel.
In the event of a diaphragmrupture, material can beforced out
of the air exhaust muffler.
Pipe the exhaust to a safe remote location when pumpinghaz­ardous or inflammable materials.
Use a grounded 3/8” min. i.d. hose between the pump and the
muffler.

WARNING

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 outlethose or piping from
pump.

WARNING

num wetted parts cannot be used with III.-Trichloroethane,Me­thylene Chloride or other Halogenated Hydrocarbon solvents
which may react and explode.

EXCESSIVE AIR PRESSURE. Can cause pump

STATICSPARK.Can cause explosion resulting in

Pump exhaust may contain contaminants. Can

HAZARDOUS PRESSURE. Can result in serious

EXPLOSION HAZARD. Models containing alumi-

HAZARDOUS MATERIALS
HAZARDOUS PRESSURE

Check pump motor section, fluid caps, manifolds and all
wetted parts to assure compatibility before using with solvents
of this type.

WARNING

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.

CAUTION

wetted parts and the substance being pumped, flushed or re­circulated. Chemical compatibility may change with tempera­ture and concentration of the chemical(s) within the
substances being pumped, flushed or circulated. For specific
fluid compatibility, consult the chemical manufacturer.

CAUTION

cal stress only. Certain chemicals will significantly reduce
maximum safe operating temperature. Consult the chemical
manufacturer for chemical compatibility and temperature lim­its.RefertoPUMPDATAonpage1ofthismanual.

CAUTION

been trained for safe working practices,understand it’s limita­tions, and wear safety goggles / equipment when required.

CAUTION

the piping system. Be certain the system components are
properly supported to prevent stress on the pump parts.
Suction and discharge connections should be flexible connec­tions (such as hose), not rigid piped, and should be compatible
with the substance being pumped.

CAUTION

notallow 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

sure compatible pressure rating and longest service life.

NOTICE

request: “Static Spark PN \ 93122 & Diaphragm Rupture PN \
93616-1.”

NOTICE

TION. Creep of housing and gasket materials may cause fas­teners to loosen. Re-torque all fasteners to insure against fluid
or air leakage.

WARNING

CAUTION

NOTICE

HAZARDOUSMATERIALS.Can cause seriousin-

Verify the chemical compatibility of the pump

Maximum temperatures are based on mechani-

Be certain all operators of this equipment have

Do not use the pump for the structural support of

Prevent unnecessary damage to the pump. Do

Use only genuine ARO replacement parts to as-

Replacement warning labels are available upon

RE-TORQUEALL FASTENERSBEFORE OPERA-

= Hazards or unsafe practices which could

result in severe personal injury, death or
substantial property damage.

= Hazards or unsafe practices which could

result in minor personal injury, product
or property damage.

= Important installation, operation or

maintenance information.

6661AX-X-CPAGE 2OF8

AIR AND LUBE REQUIREMENTS

WARNING

damage, personal injury or property damage.

EXCESSIVE AIR PRESSURE. Can cause pump

S 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.

S If lubricated air is present, make sure that is compatible with the Ni-

trile “O” rings in the air motor section of the pump.

OPERATING INSTRUCTIONS

Always flush the pump with a solvent compatible with the material

S

being pumped if the material being pumped is subject to ‘‘setting up”
when not in use for a period of time.

S Disconnect the air supply from the pump if it is to be inactive for a few

hours.

S 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. Besure not to use hose
which might collapse.

S When the diaphragm pump is used in a forced-feed (flooded inlet)

situation it is recommended that a “Check Valve” be installed at the
air inlet.

S Secure the diaphragm pump legs to a suitable surface to insure

against damage by vibration.

MAINTENANCE

Refer to the part views and descriptions as provided on page 4 through 7
for parts identification and Service Kit information.

S Certain ARO “Smart Parts” are indicated which should be available

for fast repair and reduction of down time.

S 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 OPTIONS.

S Provide a clean work surface to protect sensitive internal moving

parts from contamination from dirt and foreign matter during service
disassembly and reassembly.

MAINTENANCE CONTINUED

S

Keep good records of service activity and include pump in preven­tive maintenance program.

S Beforedisassembling empty captured material in the outletmanifold

by turning the pump upside down to drain material from the pump.

FLUID SECTION DISASSEMBLY

1. Remove top manifold(s).

2. Remove (22) balls, (19 and 33) “O” rings and (21) seats.

3. Remove (15) fluid caps.
NOTE: Only PTFE diaphragm models use a(7) primary diaphragmand
an (8) backup diaphragm. Refer to the auxiliary view in the Fluid Section
illustration.

4. Remove the (6) nut, (7) or (7 / 8) diaphragms and (5) washers.

5. Remove (3 and 4) “O” rings.
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.

FLUID SECTION REASSEMBLY

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Reassemble in reverse order.

S Clean and inspect all parts. Replace worn or damaged parts with

new parts as required.

S Lubricate (1) diaphragm rod and (2) “O” ring with Key-LubeR

grease.

S Use ARO PN / 98930-T Bullet (installation tool) to aid in installation

of (2) “O” ring on (1) diaphragm rod.

S Be certain (7) or (7 / 8) diaphragm(s) align properly with (15) fluid

caps before making final torque adjustments on bolt and nuts to
avoid twisting the diaphragm.

S For models with PTFE diaphragms: Item (8) Santoprene diaphragm

is installed with the side marked “AIR SIDE” towards the pump cen­ter body. Install the PTFE Diaphragm with the side marked “FLUID
SIDE” towards the fluid cap.

S Re-check torque settings after pump has been re-started and run a

while.

Fluid Side

Air

Side

CROSS SECTION VIEW OF DIAPHRAGMS

S Santoprene

Air Side

(Refer to figure 3, page 5)

R is a trademark of the Monsanto Company, licensed to Advanced Elastomer Systems. L.P. S Key-LubeR is a registered trademark of Key Industries

S VitonR and HytrelR are trademarks of the DuPont Company S KynarR is a trademark of Penwalt Corp.

Fluid
Side

3

5

7

2

Torque Sequence

(Refer to figure 3, page 5)

1

8

6

4

Figure 2

PAGE 3OF86661AX-X-C