OPERATOR’S MANUAL NM2328A-X
RELEASED: 10-21-97
REVISED: 6-1-10
(REV.C)

TWO BALL PUMP SERIES

3” AIR MOTOR

28:1 RATIO

3” STROKE

INCLUDEMANUALS: 66066-X LOWER PUMP END (PN 97999-770), 66913 AIR MOTOR (PN 97999-748) &
S-632GENERAL INFORMATION MANUAL (PN 97999-624).
SPECIFICATIONS,SERVICE KITS, GENERAL INFORMATION, TROUBLESHOOTING

NM2328A-11-X11

STAINLESS STEEL

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

Use only genuine ARORreplacement parts to assure compatible
pressure rating and longest service life.
637316 for repair of Air Motor section.
637006-1 for repair of 66066-1 lower pump section.
637006-2 for repair of 66066-2 lower pump section.
637006-3 for repair of 66066-3 lower pump section.
637007 for replacement of foot valve assembly.

SPECIFICATIONS

Model Series (referto option chart) NM2328A-11-X11...
Type Air Operated, Two Ball....................
Ratio 28:1....................
Air Motor 66914.................
Motor Repair Kit 637316..........
Motor Diameter 3” (7.62 cm)...........
Stroke (Double Acting) 3” (7.62 cm).....
Air Inlet 1/4- 18 N.P.T.F.(female).................
Lower Pump End Series
NM2328A-11-311 66066-1.........
NM2328A-11-G11 66066-2........
NM2328A-11-S11 66066-3........
Material Inlet 1/2 - 14 N.P.T.F.- 1 (female).............
Material Outlet 1/4 - 18 N.P.S.M.(male)...........
PERFORMANCE
Air Inlet Pressure Range 0 - 150 p.s.i. (0 - 10.3 bar).....
Fluid Pressure Range 0 - 4200 p.s.i. (0 - 289.7 bar).......
Max. Rec’d Cycles / Minute 125...
Displacement In3Per Cycle 1.47...
Volume/ Cycle 0.81 oz. (.45 ml).............
Cycles Per Gallon 157.5..........
Flow @ 60 Cycles / Minute 0.38 g.p.m. (1.44 l.p.m.)....
Noise Level @ 100 p.s.i. 85 db(A) *......
Accessories Available 61113Wall Mount Bracket.......
66073-1 Air Line Connection Kit
*Thepump sound pressure level has been updated to an Equivalent Continuous Sound
Level(LAeq) to meet the intent of ANSI S1. 13-1971, CAGI-PNEUROP S5.1 using four mi-
crophonelocations.

PUMP DATA

Air Motor 66914
(seemanual 66913)
FIGURE 1
MaterialOutlet
1/4- 18 N.P.S.M.(male)
Lower Pump 66066-X
(seemanual 66066-X)
AirInlet
1/4- 18 N.P.T.F.(female)

MODEL NM2328A-11-X11

NOTE: Dimensions are shown in inches and (mm), suppliedfor reference only and are
typicallyrounded up to the nearest 1/16 inch.
MaterialInlet
1/2- 14 N.P.T.F.- 1 (female)
Solvent Cup 91019
‘‘O”Ring 91021
(notshown) (.070” x 1-3/4” o.d.)
21-3/4”
(552.1mm)
13-1/32”
(331.0mm)
6-1/4”
(158.6mm)
IMPORTANT
This is one of the four documents which support the pump. Re-
placement copies of these forms are available upon request.
=NM2328A-X MODEL OPERATOR’SMANUAL
-GENERAL INFORMATION-- INDUSTRIAL PISTON PUMPS
-66066-X LOWER PUMP END OPERATOR’SMANUAL
-66913 AIR MOTOR OPERATOR’SMANUAL
INGERSOLL RAND COMPANY LTD
209 NORTH MAIN STREET – BRYAN, OHIO 43506
(800) 495-0276 FAX(800) 892-6276 © 2010
www.ingersollrandproducts.com
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