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650937-X
PUMP OPTION DESCRIPTION CHART
650937--X
PACKING MATERIAL
PLUNGER TYPE
SPRING ARRANGEMENT
PACKING MATERIAL (PACKINGSAREUPPERANDLOWERUNLESSNOTED)
C UHMW--PE P UHMW--PE/PTFE STAG’D (UPPER)
K CARBONGRAPHITEFILLED PTFE UHMW--PE(LOWER)
L MINERALFILLED PTFE R PTFE/UHMW--PESTAG’D(UPPER)
PTFE(LOWER)
SPRING ARRANGEMENT
3
NOSPRING
6 WAVESPRING
PLUNGER TYPE
3
HDSS W/HDCHROMEPLATING
X3
GENERAL DESCRIPTION
WARNING
HAZARDOUS PRESSURE. Do not exceed maxi-
mum operating pressure of 515 psi (35.5 bar) at 1200 psi (83
bar) inlet hydraulic pressure.
PUMP RATIO X MAXIMUM PUMP
INLET PRESSURE TO PUMP MOTOR
= FLUID PRESSURE
Pumpratiois anexpressionofthe relationshipbetweenthe pumpmotorareaandthe
lowerpumpendarea.EXAMPLE:When150p.s.i.(10.3bar)inletpressureissupplied
tothemotorofa5:1ratiopumpitwilldevelopamaximumof750p.s.i.(52bar)fluidpres-
sure(atnoflow)--asthefluidcontrolisopened,theflowratewillincreaseasthemotor
cycle rate increases to keepup withthe demand.
WARNING
Refer to general information sheet for additional
safety precautions and important information.
• The Two--Ballpumps areprimarilydesignedfor the pumpingofme-
diumviscosity fluidscompatiblewith400 seriesstainlesssteel. The
lower pumpisdesigned foreasy primingand thedoubleacting fea-
tureis standardin allAROindustrial pumps.Materialis deliveredto
the pump discharge outlet on both the up and down stroke.
• The motoris connectedto thelower pumpend byaspacer section.
This allows for lubrication of the upper packinggland and prevents
motorcontaminationbecauseofnormalwearandeventualleakage
through thematerial packinggland. Besure the solvent cupis ade-
quatelyfilled with lubricant toprotecttheupper packingsandinsure
longest service life.
TROUBLE SHOOTING
Pump problems can occur in either the Hydraulic Motor Section or the
LowerPump EndSection,use these basicguidelinestohelpdetermine
which section is affected.
If the pump will not cycle.
• Be certain to first check for non--pump problems including kinked,
restrictiveorpluggedinlet/outlethoseordispensingdevice.Depres-
surize the pumpsystem and clean outany obstructions inthe inlet/
outlet material lines.
• Refer tothe motormanual fortroubleshooting ifthe pumpdoesnot
cycle and/or hydraulic fluid leaks from the hydraulic motor.
If the pump cycles but does not deliver material.
• Refer to the lower pump end manual for further trouble shooting.
PUMP CONNECTION -- UPPER / LOWER
NOTE: All threads are right hand.
1. Lay the pump assembly on a workbench.
2. Remove the top three screws and washers from the three spacer
rods (see figure 1).
3. Pull thehydraulicmotor fromthe lower pumpend untilmotor piston
rodis inthe‘‘down” positionandlower pumpendrod is in ‘‘up”posi-
tion.
4. Remove thethree spacerrods byunscrewing thebottom three cap
screws.
5. Removethecotterpinandunscrewthelowerpumpendrodfromthe
adapter (see figure 2).
Pump Motor
Piston Rod
Cotter Pin
Y15--46--S
Adapter
93350--1
PUMP CONNECTOR DETAIL
FIGURE 2
REASSEMBLY
1. Align the pump motor with the lower pump end.
2. Screw the adapter onto the motor piston rod.
3. Screwthelowerpumprodintotheadapterandsecurewiththecotter
pin. NOTE: Bend the ends of the pin into the groove of adapter.
4. Reinstallthespacerrodstothelowerpumpend,securingwiththree
cap screws.
5. Bring the motor and lower pump together and retain with the three
screws and washers.
PN 97999-550