CAT Pumps 241 Service Manual

FEATURES
Superior Design
Triplex plunger design gives smoother liquid flow.
Hi-Pressure Seals are completely lubricated and cooled by
the liquid being pumped.
Inlet and discharge valve assemblies interchange for easier
maintenance.
Lubricated Lo-Pressure Seals provides double protection against
external leakage.
Oil bath crankcase assures optimum lubrication.
Close tolerance concentricity of the ceramic plunger maximizes
seal life.
Optional Belt Drive or Motorized versions offer system flexibility.
Quality Materials
Precision design 316 stainless steel valves and seats are hardend
and polished for ultimate seating and extended valve life.
316 Stainless Steel or Nickel Aluminum Bronze manifolds are strong
and corrosion resistant.
Special concentric, high-density, polished, solid ceramic plungers
provide a true wear surface and extended seal life.
Specially formulated, CAT PUMP exclusive, Hi-Pressure Seals offer
unmatched performance and seal life.
Die cast aluminum crankcase provides high strength, minimum
weight and precision tolerance control.
Chrome-moly crankshaft gives unmatched strength and surface
hardness.
Oversized crankshaft bearings with greater capacity mean longer
bearing life.
Easy Maintenance
Wet-end is easily serviced without entering crankcase, requiring less
time and effort.
Preset packings mean no packing gland adjustment is necessary,
reducing maintenance costs.
WARNING
All systems require both a primary pressure regulating device (i.e., regulator, unloader) and
a secondary pressure safety relief device (i.e., pop-off valve, safety valve). Failure to
install such relief devices could result in personal injury or damage to the pump or to
system components. CAT PUMPS does not assume any liability or responsibility for the
operation of a customer's high pressure system.
"Customer confidence is our greatest asset"
®
3 Frame
Plunger Pump
Stainless
Steel
231,241,271
Models
Nickel Aluminum
Bronze
237,247,277
Models
SPECIFICATIONS
231 237
MODELS AND
Flow ................................................................2.3 GPM
Pressure Range ..................................100 to 1500 PSI
RPM .............................................................1725 RPM
Stroke .................................................................0.276"
241 247
MODELS AND
Flow ................................................................3.6 GPM
Pressure Range ..................................100 to 1200 PSI
RPM .............................................................1725 RPM
Stroke .................................................................0.433"
271 277
MODELS AND
Flow ................................................................3.5 GPM
Pressure Range ..................................100 to 1500 PSI
RPM .............................................................1450 RPM
Stroke .................................................................0.500"
COMMON SPECIFICATIONS
Bore ....................................................................0.709"
Inlet Pressure Range .......................Flooded to 60 PSI
Crankcase Capacity ............................................15 oz.
Maximum Liquid Temperature ............................160°F
Above 130°F call CAT PUMPS for inlet conditions and elastomer recommendations.
Inlet Ports (2)................................................1/2" NPTF
Discharge Ports (2) ......................................3/8" NPTF
Pulley Mounting...........................................Either Side
Shaft Diameter....................................................0.650"
Weight .............................................................13.4 lbs.
Dimensions....................................10.24 x 8.78 x 5.35"
ELECTRIC HORSEPOWER REQUIREMENTS
MODEL FLOW PRESSURE
PSI
1000 1200 1500 Std. 5.0" Pump Pulley O.D.
U.S. BAR BAR BAR
GPM L/M 70
271, 277 3.5 13.2 2.4
3.0 11.4 2.1
231, 237 2.3 8.7 1.6
241, 247 3.6 13.6 2.5
DETERMINING Rated G.P. M.
THE PUMP R.P.M. Rated R.P. M.
DETERMINING
THE REQUIRED H.P.
DETERMINING Motor Pulley O.D.
MOTOR PULLEY SIZE
See complete Drive Packages [Inclds: Pulleys, Belts, Hubs, Key] Tech Bulletin 003.
Refer to pump Service Manual for repair procedure, additional technical information and pump warranty.
U.S. Measure Metric Measure
(7 to 105 BAR)
(1725 RPM)
(7 to 85 BAR)
(1725 RPM)
(7 to 105 BAR)
(1450 RPM)
(Flooded to 4 BAR)
(1/2" NPTF)
(3/8" NPTF)
(Either Side)
(260 x 223 x 136 mm)
MOTOR PULLEY SIZE
PSI PSI Using 1725 RPM Motor &
RPM
85 105
2.9 3.6 1450
2.5 3.1 1240
1.9 2.4 1725 Direct Drive
3.0 N/A 1725 Direct Drive
= "Desired" G.P. M.
"Desired" R.P. M.
GPM x PSI = Electric Brake
1460 H. P. Required
= Pump Pulley O.D.
Pump R.P.M. Motor R.P.M.
(8.7 L/M)
(7 mm)
(13.6 L/M)
(11 mm)
(13.2 L/M)
(12.7 mm)
(18 mm)
(.45 L)
(71°C)
(16.5 mm)
(6.1 kg)
Pulley
O.D.
4.1
3.5