ARO 650888 Series User manual

OPERATOR’S MANUAL 650888-XXX
INCLUDING: SPECIFICATIONS, SERVICE KITS, GENERAL INFORMATION, TROUBLESHOOTING.
INCLUDE MANUALS: 66523-B Air Motor (pn 97999-868), 67300-XXX Lower Pump End (pn 97999-961) &
S-632 General Information Manual (pn 97999-624).
RELEASED: 2-21-01
REVISED: 6-6-07
(REV. B)
650888-XXX
EXTRUSION PUMP SERIES
Carbon 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.
8”AIR MOTOR
28:1 RATIO
6”STROKE
SERVICE KITS
Use only genuine ARO® replacement parts to assure compat-
ible pressure rating and longest service life.
66614 for repair of air motor section.
637348-XXD for repair of lower pump end. Refer to the chart
on page 2 for description of -XXX options.
SPECIFICATIONS
Model Series (refer to option chart) . . . . . . . . . . . 650888-XXX
Pump Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Operated, Extrusion
Double Acting Pump
Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28:1
Air Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66523-B
Motor Repair Kit. . . . . . . . . . . . . . . . . . . . . . . 66614
Motor Diameter . . . . . . . . . . . . . . . . . . . . . . . 8”(20.3 cm)
Stroke (double acting). . . . . . . . . . . . . . . . . 6”(15.2 cm)
Air Inlet (female) . . . . . . . . . . . . . . . . . . . . . . . 3/4 - 14 N.P.T.F. - 1
Air Exhaust (female). . . . . . . . . . . . . . . . . . . . 1-1/4 - 11-1/2 N.P.T.F. - 1
Lower Pump End Series. . . . . . . . . . . . . . . . . . 67300-XXX
Lower Pump Repair Kit . . . . . . . . . . . . . . . . 637348-XXD
Material Outlet (female) . . . . . . . . . . . . . . . 1-1/4 - 11-1/2 N.P.T.F. - 1
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 lbs (63.5 kgs)
PUMP PERFORMANCE
Air Inlet Pressure Range . . . . . . . 30 - 120 p.s.i.g. (2.1 - 8.3 bar)
Fluid Pressure Range. . . . . . . . . . . . 840 - 3360 p.s.i.g. (57.9 - 231.7 bar)
Maximum Rec'd Cycles / Minute . . . . . . . . . 70
Displacement In. Per Cycle. . . . . . . . . . . . . . . . 20.0
Volume / Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.08 oz. (327.6 ml)
Cycles Per Gallon . . . . . . . . . . . . . . . . . . . . . . . . 11.55
Flow @ 70 Cycles / Minute. . . . . . . . . . . . . . . . 6.06 g.p.m. (22.94 l.p.m.)
Noise Level @ 60 p.s.i. - 40 c.p.m. . . . . . . . . 89.8 db(A)c
Accessories Available . . . . . . . . . . . . . . . . 66542 Wall Mount Bracket
65139 Floor Mount
92460 Silencer
cThe pump 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 microphone locations.
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PUMP DATA
“B”
“A”
“C”
“D”
IMPORTANT
This is one of four documents which support the pump. Re-
placement copies of these forms are available upon request.
:650888-XXX Model Operator’s Manual (pn 97999-977)
S-632 General Information - Industrial Piston Pumps (pn
97999-624)
67300-XXX Lower Pump End Operator’s Manual (pn 97999-961)
66523-B Air Motor Operator’s Manual (pn 97999-868)
Figure 1
MODEL 650888-XXX
NOTE: Dimensions are shown in inches and (mm) and are supplied for reference only.
Air Inlet (female)
3/4 - 14 N.P.T.F. - 1 (not shown)
Material Outlet (female)
1-1/4 - 11-1/2 N.P.T.F. - 1
(90° from air inlet)
66523-B Air Motor
(see manual 66523-B)
67300-XXX Lower Pump
(see manual 67300-XXX)
Spacer Section
Air Exhaust (female)
1-1/4 - 11-1/2 N.P.T.F. - 1
Connector (see gure 2)
Y6-128-C Hex Cap Screw (6)
Y14-750-K Lock Washer (6)
93866 Spacer Rod (3)
“A” (mm) “B”
(mm) “C” (mm) “D”(mm)
51-11/32”(1304.1) 30-13/32"
(772.3) 19-1/4" (489.0) 2-7/8”(73.1)
95214 Spring

Page 2 of 2 650888-XXX (en)
PN 97999-977
GENERAL DESCRIPTION
The chop-check pumps are primarily designed for the pumping of
heavy viscous material with or without brous content. The models
can be used with a gravity feed single post lift as a topper type
assembly or with a two post lift as a force feed type assembly. The
lower pump is designed for easy priming and the double acting
feature is standard in all ARO industrial pumps. Material is delivered
to the pump discharge outlet on both the up and down stroke.
The motor is connected to the lower pump end by a spacer section.
This allows for lubrication of the upper packing gland and prevents
motor contamination because of normal wear and eventual leak-
age through the material packing gland. Be sure the solvent cup is
adequately lled with lubricant to protect the upper packings and
insure longest service life.
WARNING
HAZARDOUS PRESSURE. Do not exceed maxi-
mum operating pressure of 3360 p.s.i. (231.7 bar) at 120
p.s.i. (8.3 bar) inlet air pressure.
Pump Ratio X = Maximum Pump
Inlet Pressure to Pump Motor Fluid Pressure
Pump ratio is an expression of the relationship between the pump motor area
and the lower pump end area. EXAMPLE: When 150 p.s.i. (10.3 bar) inlet pressure
is supplied to the motor of a 4:1 ratio pump, it will develop a maximum of 600
p.s.i. (41.4 bar) uid pressure (at no ow) - as the uid control is opened, the ow
rate will increase as the motor cycle rate increases to keep up with the demand.
WARNING
Refer to general information sheet for additional
safety precautions and important information.
NOTICE: Thermal expansion can occur when the uid in the mate-
rial lines is exposed to elevated temperatures. Example: Material
lines located in a non-insulated roof area can warm due to sunlight.
Install a pressure relief valve in the pumping system.
Replacement warning label (pn 92325) is available upon re-
quest.
TROUBLE SHOOTING
Pump problems can occur in either the air motor section or the
lower pump end section. Use these basic guidelines to help deter-
mine which section is aected.
Pump will not cycle.
Be certain to first check for non-pump problems including
kinked, restrictive or plugged inlet / outlet hose or dispensing
device. Depressurize the pump system and clean out any ob-
structions in the inlet / outlet material lines.
Refer to the motor manual for trouble shooting if the pump
does not cycle and / or air leaks from the air motor.
Damaged motor. Service the motor.
Pump cycles but does not deliver material.
Refer to the lower pump end manual for further trouble shoot-
ing.
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PUMP CONNECTION - UPPER / LOWER
NOTE: All threads are right hand.
Lay the pump assembly on a work bench.
Remove the three (Y6-128-C) cap screws and (Y14-750-K) lock
washers from the three spacer rods (see gure 1).
Pull the air motor from the lower pump end until the motor
piston rod is in the “down” position and the lower pump end
rod is in the“up”position.
Remove the three spacer rods by removing the three (Y6-
128-C) cap screws and (Y14-750-K) lock washers.
Using e-ring pliers, slide the“e”ring up far enough to allow the
sleeve to move upward and release the two connectors (see
gure 2).
PUMP CONNECTION DETAIL
Pump Motor Piston Rod
95069“E”Ring
Lower Pump Piston Rod
94688 Connector (2)
94689 Sleeve
Figure 2
REASSEMBLY
Align the pump motor with the lower pump end. Position the
air inlet of the motor 90° from the material outlet.
Install the two connectors (94688) and retain with the sleeve
(94689). Slide the“e”ring (95069) back into position.
Assemble the three spacer rods (93866) to the lower pump
and secure using three (Y14-750-K) lock washers and (Y6-
128-C) cap screws.
Reinstall the spacer rods to the pump motor.
Bring the motor and lower pump together and retain with
three (Y14-750-K) lock washers and (Y6-128-C) cap screws.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
PUMP OPTION DESCRIPTION CHART
650888- X X X
Packing Material
Spring Arrangement
Plunger Type
PACKING MATERIAL (Packings are upper and lower unless noted)
C - UHMW-PE J - Polyurethane (upper)
UHMW-PE (lower)
SPRING ARRANGEMENT PLUNGER TYPE
3 - No spring D - Hard stainless steel with hard chrome plating
4 - Multiple wave spring
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