Service Manual 450R and 450V Pump 450R Rubber Pump 450V Virgin Pump BearCat Pumps, LLC (623)587-1350 1
Table of Contents General Safety Precautions Overview 3 4 Relief Valve No-Leak Lip Seal Installation 5 Shaft Alignment System Piping Piping Strain Relief Valve 6 Relief Valve Setting Start–Up Routine Maintenance 7 8 Bearing grease for ‘R’ series pumps Shaft Seal Seal Replacement Procedure Troubleshooting 9 No liquid delivered or the pump will not prime.
GENERAL SAFETY PRECAUTIONS • This manual should be read entirely prior to the commencement of installation and operation. • Only qualified personnel should install, operate and maintain this pump and associated equipment. • Check pump for specific safety warnings/labels. • Prior to start-up, ensure complete cleanliness and integrity of the system in which the pump is installed. • In most cases the relief valve is factory set during performance test.
OVERVIEW The BearCat 450 is an external gear, positive displacement pump designed specifically for pumping asphalt. It is entirely heat jacketed with relief valve in both flow directions. Two different models are available; 450V: Bronze bushing and shaft design. Works well for standard asphalt and emulsions. 450R: AR Spherical Bearing design, rebuildable pump. Ruggedized model designed for Asphalt/ Rubber.
INSTALLATION Shaft Alignment In the case of a belt driven system, care should be taken to insure proper alignment and tension of the drive belts and pulleys. A pillow block must be used in order to support the side load from the belts. Insure that the belts and pulleys are free and clean from oil and debris. In the case of a direct drive system, proper care must be used to insure that the coupled shafts are accurately aligned. Failure to do so may result in rapid wear of the seal and/or reduced pump life.
RELIEF VALVE Each endplate can relieve the pressure in one flow direction only. As such, if the valves are set in opposing directions, each direction is independently adjustable. So it is possible to pressure relieve at 80 PSI in one direction, while 30 PSI in reverse. It is important for the operator to understand which valve controls each flow direction. Caution: A relief valve is necessary to protect the pump and system from potentially dangerous over-pressure.
START–UP Caution: 1. Pump should turn freely by hand. Ensure all guards are in place. 2. If heating is necessary, turn on supply and allow pump temperature to stabilize. 3. Gradually open appropriate valves, and check for signs of leakage. Be sure all guards are in place, and all appropriate safety gear is worn prior to starting pump. During initial run, pump speed should be operated at minimum in order to insure all functions are normal, connections are leak free, and rotation is smooth.
ROUTINE MAINTENANCE Bearing grease for ‘R’ series pumps For optimal service life in an R model pump, the bearings need one of two things prior to start-up each day. Heat or Grease. Cold Asphalt Rubber (AR) is extremely tough on the bearings and castle nut assembly inside the pump. If the pump is traced with heat transfer oil, then the bearing areas will receive adequate heat that will soften the AR.
TROUBLESHOOTING Under each fault symptom given below is a list of recommended inspections that could indicate the cause, most are elementary but are often overlooked. The best aid to fault finding in the pump is a vacuum gauge as close as possible to the pump inlet.
TECHNICAL DATA Maximum Operating Limitations • Pressure: 130 PSI (9 BAR) • Speed: 500 RPM • Temperature: 500°F (260°C) Actual flow can be limited by any number of parameters. Line flow restrictions, viscosity, material type etc. The standard maximum RPM is based on ideal conditions. As a general rule, we recommend reducing speed RPM limits by 25% when handling viscous materials such as rubberized asphalt. When certain conditions are met, the pumps may be used in excess of the limitations.
MODEL NUMBER AND CONFIGURATION 600RMX - RH 600VPS - LL Examples BearCat Pumps, LLC (623)587-1350 11
450R PARTS DIAGRAM / DIMENSIONAL DRAWING To order specify model number (ex - 450RMX) followed by item; (1) Housing (2) Gear Set (3) End Plate Gasket (4) Idler Shaft (5) Drive Shaft (6) End Plate (7) Adjuster Nut (8) Adjuster Nut O-ring (9) Relief Valve Assembly (10) O-ring RV plate (11) Bearing Cap (12) O-ring Cover Plate (13) Steel Sleeve Continued (17) Castle Nut and Cotter Pin (18) Bearing Heat fittings. All tapped ports require a #12 O-ring Fitting.
Port Size - Both ports are a 3” ANSI 150# Pipe flange. - For high performance requirements, consult factory for weld on flanges for 4” pipe. With this set-up, the pump and entire pipe system are now 4” throughout.
450V PARTS DIAGRAM / DIMENSIONAL DRAWING To order specify model number (ex - 450VMX) followed by item; (1) Housing (2) Gear Set (3) End Plate Gasket (4) Idler Shaft (5) Drive Shaft (6) End Plate (7) Adjuster Nut (8) Adjuster Nut O-ring (9) Relief Valve Assembly (10) O-ring RV plate (11) Bearing Cap (12) O-ring Cover Plate (13) Bushing Modified Seal (14) M24/Housing Assembly (15) Shaft Seal (16) Dust Seal and Mount Bracket Heat fittings. All tapped ports require a #12 O-ring Fitting.
Port Size - Both ports are a 3” ANSI 150# Pipe flange. - For high performance requirements, consult factory for weld on flanges for 4” pipe. With this set-up, the pump and entire pipe system are now 4” throughout.
