ARO NM2318B-13-X43 Series User manual

NM2318B-13-X43
TWO BALL PUMP SERIES
OPERATOR’S MANUAL NM2318B-X-X
RELEASED: 10-28-04
REVISED: 6-1-10
(REV. 02)
3” AIR MOTOR
18:1 RATIO
3” STROKE
INCLUDEMANUAL:67310-X-XLOWERPUMPEND(PN97999-1129),6691XAIRMOTOR(PN97999-748)&S-632GEN-
ERAL INFORMATION (PN 97999-624)
INCLUDING: SPECIFICATIONS, SERVICE KITS, GENERAL INFORMATION, PARTS, TROUBLESHOOTING
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.
STAINLESS STEEL
SERVICE KITS
Use only genuine ARORreplacement parts to assure compatible
pressure rating and longest service life.
637316for repair of air motor section.
637394-X43 for repair of 67310-13-X43lower pumpsection.
SPECIFICATIONS
Model Series (refer to option chart) NM2318B-13-X43. . . . . . .
Type AirOperated,TwoBall........................
Ratio 18:1........................
Air Motor 66917.....................
Motor Repair Kit 637316..............
Motor Diameter 3 (7.62 cm)..............
Stroke (Double Acting) 3 (7.62 cm).........
Air Inlet (female) 1/4 - 18 N.P.T.F. -1. . . . . . . . . . . . . .
Lower Pump End Series 67310-X-X. . . . . . . . .
models NM2318B-13-C43 67310-13-C43. . . . . .
models NM2318B-13-L43 67310-13-L43. . . . . .
Lower Pump End Repair Kit
models NM2318B-13-C43 637394-C43. . . . . .
models NM2318B-13-L43 637394-L43. . . . . .
Material Inlet (female) 1/2 -14N.P.T.F. - 1. . . . . . . . . .
Material Outlet (male) 1/4 -18-1/2 N.P.S.M.. . . . . . . . . .
Weight 12.63lbs(5.7kg).......................
PERFORMANCE
Air Inlet Pressure Range 0 -150 p.s.i. (0 -10.3 bar). . . . . . . . .
Fluid Pressure Range 0-2700p.s.i.(0-186.2bar). . . . . . . . . . .
Maximum Recd Cycles / Minute 120. . .
Displacement In3Per Cycle 2.35.......
Volume / Cycle 1.30oz. (38.5 ml). . . . . . . . . . . . . . . . .
Cycles Per Gallon 98.3..............
Flow @ 60 Cycles / Minute 0.61g.p.m.(2.3 l.p.m.). . . . . . . .
Noise Level @ 100 p.s.i. 85db(A) *..........
Accessories Available 95015Wall Mount Bracket. . . . . . . . . . .
*ThepumpsoundpressurelevelhasbeenupdatedtoanEquivalentContinuousSound
Level(LAeq)tomeettheintentofANSIS1.13-1971,CAGI-PNEUROPS5.1usingfour
microphone locations.
PUMP DATA
66917 Air Motor
(see manual 6691X)
Figure 1
Material Outlet (male)
1/4 - 18-1/2 N.P.S.M.
67310-13-X43 Lower Pump
(see manual 67310-X-X)
Air Inlet (female)
1/4 - 18 N.P.T.F. - 1
MODEL NM2318B-13-X43
NOTE: Dimensionsareshownininchesand(mm),suppliedforreferenceonlyandare
typically rounded up to thenearest 1/16 inch.
Material Inlet (female)
1/2 - 14 N.P.T.F. - 1
Not Shown
66885-1 Ground Kit Assembly
6-15/16
(175.4 mm)
Connector (see figure 2)
95477 Tie Rod (3)
95506 Spring
Y12-4-C Nut (3) (1/4 - 20)
13-3/16
(334.2 mm)
22-3/16
(563.6 mm)
See Note 2
(Pump Connection, page 2)
IMPORTANT
This is one of the four documents which support the pump. Re-
placement copies of these forms are available upon request.
=NM2318B-X-X Model Operators Manual (pn 97999-1128)
-General Information -- Air / Hydraulic Operated Industrial Piston
Pumps (pn 97999-624)
-67310-X-X Lower Pump End Operators Manual (pn 97999-1129)
-6691X Air Motor Operators Manual (pn 97999-748)

PN 97999-1128
NM2318B-X-XPage 2 of 2
PUMP OPTION DESCRIPTION CHART
NM2318B - 1 3 - X 4 3
CONTAINER SUITABILITY
PLUNGER TYPE
SPRING ARRANGEMENT
CONTAINER SUITABILITY PACKING MATERIAL
1 - Universal (Stub) C - UHMW-PE (upper and lower)
L - Mineral filled PTFE (upper and lower)
SPRING ARRANGEMENT PLUNGER TYPE
4 - Multiple Wave Spring 3 - Standard (400 series Stainless steel with hard
chrome plating)
PACKING MATERIAL
GENERAL DESCRIPTION
WARNING HAZARDOUS PRESSURE. Do not exceed maxi-
mum operatingpressureof 2700 p.s.i. (186.2 bar) at 150 p.s.i.
(10.3bar) inlet air pressure.
PUMP RATIO X MAXIMUM PUMP
INLET PRESSURE TO PUMP MOTOR =FLUID PRESSURE
Pump ratio is anexpression oftherelationship between the pump motor area and the
lowerpumpendarea.EXAMPLE:When150p.s.i.(10.3bar)inletpressureis supplied
to the motorof a4:1ratiopump itwilldevelopamaximumof600p.s.i.(41.4 bar)fluid
pressure (atno flow) -- asthefluid controlis opened, theflow rate willincrease as the
motor cycle rate increases to keep up with the demand.
WARNING Refertogeneralinformationsheetforadditional
safety precautions andimportant information.
Thetwo-balldesignprovidesforeasyprimingofthelowerfootvalve.
The doubleacting featureisstandardinall ARO industrial pumps.
Materialisdeliveredtothepumpdischargeoutletonboththeupand
downstroke.
The motor isconnected to thelower pump endwith a spacer tube
and solvent cup. This allows for lubrication of the upper packing
gland and to prevent air motor contamination because of normal
wear andeventual leakage through the materialpackinggland.
TROUBLE SHOOTING
Pump problems can occur in either the air motor section or the lower
pumpendsection.Usethesebasicguidelinestohelpdeterminewhich
section is affected. Be sure to eliminate any possible non-pump prob-
lems before suspectingpump malfunction.
Pump will not cycle.
No pressure to the motor. Seemotor manual.
Restricted return lines. Cleanobstruction.
Damaged motor. Service motor.
No material at the outlet (pump continually cycles).
Checkthematerialsupply,disconnectorshutofftheairsupplyand
replenish the material, reconnect.
Material on one stroke only (fast downstroke).
The lower check may not be seating in the foot valve (see lower
pump disassembly). Remove the check from thefoot valve, clean
andinspectthevalveseatarea.Ifcheckorfootvalvearedamaged,
replace.
Material on one stroke only (fast upstroke).
Themiddlepackings may beworn(seelowerpumpdisassembly).
Replace the seals as necessary.
Material leakageoutof the solvent cupor material appears onthe
pump plunger rod.
Tightenthesolventcupuntilleakagediscontinues.Ifthisprocedure
does notaid instopping theleakage problem,the upper packings
maybeworn(seelowerpumpdisassembly).Replacethesealsas
necessary.
PUMP CONNECTION -- UPPER / LOWER
DISASSEMBLY
NOTE: All threads are right hand.
NOTE 2: When disassembling lower pump end from pump, use a
wrenchon theflats of(12) tube,(23) inletbodyand (29) seatbody
to prevent from twistingand damaging the tie rods (see Operators
Manual 67310-X-X, p/n 97999-1129 for lower pump end item num-
bers).
1. Laythepumpassembly on a workbench.
2. Remove the threenuts from thethree tierods (figure 1).
3. Pulltheairmotor fromthelowerenduntilthemotorpistonrodisin
the down position and the lower pump end plunger is in the up
position.
4. Removethecotterpinandpin,releasingmotorpistonrodfromlower
pump endplunger.
Lower Pump Plunger
Motor Piston Rod
Y15-21-S Cotter Pin
(1/16 o.d. x 1/2 long)
PUMP CONNECTOR DETAIL
Figure 2
95498 Pin
REASSEMBLY
1. Assemble lower pump end plunger to motor piston rod, aligning
throughholes.
2. Assemblepin through hole, securing rods.
3. Assemblecotter pinthrough pin.
4. Rotate the lower pump endso thematerial outlet is 180_fromthe
motor air inlet.
5. Assemblethe tierods to the lower pump end.
6. Retain withthree nuts.