OPERATOR’S MANUAL
66650
RELEASED: 6–23–95
(REV. A) IPP/PSE
INCLUDING:ĂSERVICE KITS, GENERAL DESCRIPTION & TROUBLESHOOTING
ALSOINCLUDEMANUALS:6641X-XAIRMOTORMANUAL,FORM3637-2GENERALINĆ
FORMATION SHEET.
BASIC PUMP
3” AIR MOTOR
50:1 RATIO
2 1/4” STROKE
66650
35 LB DRUM
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT
.
SERVICE KITS
PUMP DATA
• Use only genuine AROR replacement parts to assure compatible
pressure rating and longest service life.
• 637066-B for repair of Air Motor section.
• Order individual parts for repair of Lower Pump section.
66410
Air Motor
GENERAL DESCRIPTION
This model is designed for delivery of heavy viscosity fluids such as
chassis lubrication fluids. Material dispensing accessories and supply
lines and fittings must be capable of withstanding pressures developed
by pump.
1/2 NPT
Mat’l Outlet
• The ARO 50:1 ratio basic pump assembly consists of a 3" air motor
28.5
and lower pump end.
(723.9 m
RATIO x REGULATED AIR PRESSURE TO AIR MOTOR = MAXIMUM FLUID
PRESSURE.
• The 50:1 ratio is an expression of the relationship between the air
motor area and the lower pump end area. When 150 p.s.i. (10 bar)
air pressure is supplied to the air motor, the lower pump end will
develop a maximum of 7,500 p.s.i. (517 bar) fluid pressure (at no
flow) - as the fluid control is opened, the flow rate will increase as
the air motor cycle rate increases to keep up with the demand.
FIGURE 1
Lower Pump
Mat’l Inlet
F031
OPERATING AND SAFETY PRECAUTIONS
•
•
HEED ALL WARNINGS.
•
Donotoperatepumpcontinuouslyatspeedsinexcessof75cyclesperminĆ
ute.
DONOTEXCEEDMAXIMUMWORKINGPRESSUREOF7,500PSI(517
BAR) AT 150 PSI (10 BAR) AIR INLET PRESSURE.
WARNING : PREVENT STATIC SPARKING. If static sparking
occurs, fire or explosion could result. Pump, dispensing
valve and containers must be grounded when handling inĆ
flammable fluids such as petroleum products, paints, lacĆ
quers, etc. and wherever discharge of static electricity is a
hazard.
WARNING : HIGH PRESSURE DEVICE. Improper usage of
this equipment could result in serious injury. The possibility
of injection into the flesh is a potential hazard. Never allow any
part of the human body to come in front of or in direct contact
with the material outlet. An injection injury can be serious. If
injection should occur, contact a qualified physician immediĆ
ately for treatment.
•
Usegroundedhoses(staticwire)andbesuretheobjectisgroundedifitcan
produce a static charge.
• Use grounded hoses (static wire) and be sure the object is
•
•
COMPONENTRUPTURE.Thispumpiscapableofproducinghighmaterial
pressure as stated on pump model plate.
grounded if it can produce a static charge.
Be sure material hoses and other components are able to withstand fluid
pressures developed by this pump.
•
Disconnectair line from pump air motor when system sits idle for long periĆ
ods of time.
THE ARO CORPORATION D ONE ARO CENTER
D
BRYAN, OHIO 43506–0151
&
(419) 636–4242
D
FAX (419) 636–2115
E1995 THE ARO CORPORATION D PRINTED IN U.S.A.
LOWER PUMP
1
2
PARTS LIST
ITEM Description
1 Gasket
Qty Part No.
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
70834
79240
Y11-106-C
79239
70837
83276
71127
3
2 Rod
FLUID
PASSAGE
3 Nut
4
5
4 Tube
5 Gasket
6 Ball Stop
7 Plunger
6
8 Ball
Y16-209
70817
71126
7
8
9 Adapter
10 Suction Tube
11 Primer Rod
12 Washer
13 Snap Ring
14 ``U" Cup
15 Spacer
16 Body
23
72394
71524
Y147-68
Y186-4
76705
76704
72392
F21-65
6797
9
24
10
11
17 Spacer
18 Gasket
19 Seat
20 Primer
72387
Y15-21
72389
71522
71523
12
13
21 Pin
22 Primer Tube
23 Piston & Ball Check
24 Piston & Tube
14
15
16
17
18
PUMP ASSEMBL
Y
19
20
21
1. Place (8) ball into (7) plunger and insert rod assembly into (10)
tube. Add (5) gasket to (10) tube and screw (4) tube onto (10) tube.
2. Place (12) spacer, (16) body assembly, (17) spacer, (18) washer,
(19) seat abd (20) primer into position. Secure by using (21) pin to
keep primer in place.
3. Screw (22) primer tube onto (10) suction tube.
4. Place air motor assembly in vise by clamping onto the machined
flats on the air motor base.
22
5. Install (1) gasket in throat of air motor base.
6. Thread rod assembly into piston rod of air motor.
F032
-``Smart Parts" Keep these items on hand in addition to the Service Kits for fast repair and reduction of down time.
Page 3 of 4
66650
TROUBLE SHOOTING
No Material. (Stalled Pump.)
Material on one stroke only. (Fast Upstroke.)
• Item (7) cup packing is worn. Remove the cup packing. Replace
• Obstructed Material Line. Disconnect air supply. Relieve all fluid
cup packing.
pressure in pump. Remove Obstruction in system.
Material on one stroke only. (Fast Downstroke.)
No Material (Pump Continually Cycles.)
• Item (11) ball in (12) seat is not properly seating. Remove the seat.
Clean and inspect ball and seat. If either is damaged. replace with
new parts.
• Empty material supply. Shut down system. Replenish material
supply.
P/N97999-643
66650
Page 4 of 4
|