3PFR PLUNGER PUMP SERVICE MANUAL
Contents
1. Eroded manifold SOLUTION Replace with properly sized nozzle Tighten belt s or install new belt s Tighten fittings and hoses Use PTFE liquid or tape eCheck with new gauge Replace worn or damaged gauge Clean adjust relief valve Replace worn seats valves and o rings Clean filter Use adequate size filter Check more frequently Install proper filter Replace discharge hose with proper rating for system Pressurize inlet and install C A T eCheck inlet conditions Install new seal kit Increase frequency of service Clean inlet discharge valves or install new valve kit eCheck precharge If low recharge or install a new dampener Clean inlet discharge valves or install new valve kit Install new seal kit Increase frequency of service Install new o rings Install oil cap protector Change oil every 3 months or 500 hours Install new seal kit Increase frequency of service eCheck liquid supply Increase line size pressurize or install C A T Replace bearing eCheck key and tighten set screw Replace crankcase oil seals Remove bearing cover and replace o rings and or oil seals Tighten drain plug or replace o ring Tighten bubble gauge or replace gasket Tighten rear cover or replace o ring Tighten filler cap Fill crankcase to specified capacity Correct inlet size plumbing Check for air tight seal Clean out foreign material or install new valve kit Install2. 2 Using a wrench loosen Plunger Retainers approximately three 3 to four 4 turns 3 Grasp Ceramic Plunger and push towards Crankcase until Plunger Retainer with stud pops out 7 Rotate Crankshaft by hand so the two outside plungers are extended equally Lubricate O D of plungers 8 Carefully slip Inlet and Discharge Manifold assembly onto Plungers and tap with soft mallet until flush with 4 Remove Plunger Retainer with O Ring Back up Ring Crankcase and Gasket 5 Slip Ceramic Plungers Keyhole Washer and Barrier Slingers from each Plunger Rod 9 Replace the two 2 Inlet Manifold Socket Head Screws and Washers and hand tighten Then torque per chart 10 Torque the four 4 Discharge Manifold Socket Head 6 Examine Crankcase Seal for deterioration and replace Screws in sequence per chart if needed Consult CAT PUMPS supplier for crankcase servicing 1 Se 3 2 Reassembly 4 1 Replace Barrier Slinger if damaged when removing and position onto Plunger Rod with concave facing out Then examine the Keyhole Washer and place on the Plunger Rod with the slot down SERVICING CRANKCASE SECTION 1 While Manifold Plungers and Seal Retainers are removed examine Crankcase Oil Seals for leaking and wear 2 Carefully examine Ceramic Plunger for scoring or cracks and replace if worn Slip onto Rod Ceramic Plunger can only be installed one direction front to back Do not force onto Rod NOTE Do not lubri
3. Carefully replace Discharge Manifold over Plunger ends aligning Discharge Valve Adapters with Inlet Manifold Chambers and press into position Tap with a soft mallet until Inlet and Discharge Manifolds make contact Replace all four 4 Washers and Socket Head Screws Hand tighten each Then torque per chart Removal of Hi and Lo Pressure Seals SERVICING THE SEALS NOTE All parts necessary for servicing are included in the Seal Kit Disassembly 1 With Discharge Manifold removed from the pump remove the two 2 Socket Head Screws and spring washers from end of Inlet Manifold Rotate Crankshaft forward to separate Inlet Manifold from crankcase Support Inlet Manifold from underside and tap with a soft mallet to separate M from Crankcase With crankcase side of Inlet Manifold down remove Hi Pressure Seals using a reverse pliers Invert Inlet Manifold so crankcase side is up and with reverse pliers remove Lo Pressure Seals Reassembly NOTE For certain applications apply liquid gasket to O Ring crevices and seal surfaces Refer to Tech Bulletin 053 for model identification NOTE EPDM elastomers require silicone base lubricant Examine Lo Pressure Seal for wear or spring failure and replace if necessary With crankcase side of inlet manifold up press the new Lo Pressure Seal into the valve chamber with Garter Spring down Carefully square seal into position NOTE When using alternate materials the f
4. One or several of the conditions shown in the chart below may contribute to cavitation in a system resulting in premature wear system downtime and unnecessary operating costs CONDITION SOLUTION Inadequate inlet e Increase line size to the inlet port or one size line size larger e Install C A T Tube e Move pump closer to liquid supply Water hammering liquid acceleration deacceleration Rigid Inlet Plumbing e Use flexible wire reinforced hose to absorb pulsation and pressure spikes Excessive Elbows in Keep elbows to a minimum and less than 90 Inlet Plumbing Excessive Liquid e Use Thermo Valve in bypass line Temperature e Do not exceed pump temperature specifications e Substitute closed loop with baffled holding tank e Adequately size tank for frequent or high volume bypass e Pressure feed high temperature liquids e Properly ventilate cabinets and rooms e Check all connections e Use Teflon tape e Size tank according to pump output Minimum 6 10 times system GPM e Baffle tank to purge air from liquid and separate inlet from discharge High Viscosity Liquids Verify viscosity against pump specifications before operation e Elevate liquid temperature enough to reduce viscosity e Lower RPM of pump e Pressure feed pump e Increase inlet line size e Perform regular maintenance or use clean filters to monitor build up e Use adequate mesh size for liquid and pump specifications Air Leaks in Plumbing Agit
5. decreases check immediately If no wear at 1500 hours check again at 2000 hours and each 500 hours until wear is observed Valves typically require changing every other seal change Duty cycle temperature quality of pumped liquid and inlet feed conditions all effect the life of pump wear parts and service cycle Remember to service the regulator unloader at each seal servicing and check all system accessories and connections before resuming operation Refer to video for additional assistance TORQUE CHART Torque in lbs ft lbs Nm Pump Item Thread Tool Size Part No Plunger Retainer 303 S S Brass M6 M11 Hex 44044 55 4 4 Plunger Retainer 316 S S M6 M12 Hex 55 4 4 Inlet Manifold Screws M10 M8 Allen 33046 Discharge Manifold Screws Crankcase Cover Bearing Cover Screws M6 M10 Hex Phil 25082 M10 M8 Allen 33046 Connecting Rod Screws M7 M10 Hex 25082 Bubble Oil Gauge Oil Gauge Tool 44050 Mounting Bolts M13 Hex 25324 220 18 1 220 18 1 50 4 0 95 7 96 45 3 6 115 9 4 TECHNICAL BULLETIN REFERENCE CHART No 002 003 033 035 036 Subject Inlet Pressure VS Liquid Temperature Power Unit Drive Packages Lubrication of Lo Pressure Seals Crankcase and Rear Cover Servicing Crankcase Section Servicing Crankcase Section Cylinder and Plunger Reference Chart LPS and HPS Servicing Blind Bearing Shaft Cover Stainless Steel Hardware Liquid Gasket By Pass Hose
6. of Discharge Valve Adapter and carefully press into upper valve chambers in the discharge manifold with small diameter side down until Adapter snaps tightly into position Discharge and Inlet Valve Assemblies Reassembly Inlet 1 Examine Spring Retainers for internal wear or breaks in the structure and replace as needed Insert Springs into Retainers over plastic center guide and place Spring Retainers into the lower shallow valve chambers They will rest on the machined ridge in each chamber Inspect the Valves for wear ridges or pitting and re place if necessary Insert Valves over the Springs with concave side down Examine Seat O Rings for wear and replace Lubricate and place O Rings on lip of retainers Carefully square O Rings in lower inlet valve chamber to avoid cutting O Ring when Seat is installed Examine Seats for pitting scale or ridges and replace if necessary Install Seat with concave side down so O Ring fits snugly into groove on Seat Examine both the front and the rear O Rings on the Inlet Valve Adapter and replace if worn Lubricate O Rings and fit into grooves on outside of adapters Apply liquid gasket to the O Ring crevice of the O D of Inlet Valve Adapter and press into lower valve cham bers in the discharge manifold Carefully square Inlet Valve Adapter into chamber to avoid cutting or extruding O Rings 10 Rotate Crankshaft by hand so the two outside plungers are extended equally
7. Sizing S S Plunger Retainer Hi Temp HPS Torque Chart Oil Drain Kit Winterizing a Pump Models All Models 3PFR 68PFR 10FR 60FR All Models 270 279 280 290 3FR 4FR 10FR 25FR 7PFR 60PFR Models Plunger Models earbox Plunger Pumps PFR7 5PFR7 15PFR7 Plunger NAB S S Models Unloaders Regulators PFR 5PFR 7PFR PFR 5PFR 2SF ston and Plunger Pumps Models except 2SF 4SF Models L2QOr t or tL wo 2D y INLET CONDITION CHECK LIST Review Before Start Up Inadequate inlet conditions can cause serious malfunctions in the best designed pump Surprisingly the simplest of things can cause the most severe problems or go unnoticed to the unfamiliar or untrained eye REVIEW THIS CHECK LIST BEFORE OPERATION OF ANY SYSTEM Remember no two systems are alike so there can be no ONE best way to set up a system All factors must be carefully considered INLET SUPPLY should exceed the maximum flow being delivered by the pump to assure proper performance T Open inlet shut off valve and turn on water supply to avoid starving the pump DO NOT RUN PUMP DRY T Temperatures above 130 F are permissible Add 1 2 PSI inlet pressure per each degree F over 130 F Elastomer or RPM changes may be required See Tech Bulletin 002 or call CAT PUMPS for recommendations Avoid closed loop systems especially with high temperature ultra high pressure or large volumes Conditions vary with regulating unl
8. at a gentle angle of 45 or less and no closer than 10 times the pump inlet port diameter e g 1 1 2 port size 15 distance from pump inlet port HOSE FRICTION LOSS PRESSURE DROP IN PSI PER 100 FT OF HOSE WITH TYPICAL WATER FLOW RATES Water Hose Inside Diameters Inches Flow Gal Min 0 5 1 162 235 370 At a fixed flow rate with a given size hose the pressure drop across a given hose length will be directly proportional A 50 ft hose will exhibit one half the pressure drop of a 100 ft hose Above values shown are valid at all pressure levels WATER LINE PRESSURE LOSS PRESSURE DROP IN PSI PER 100 FEET Water Steel Pipe Nominal Dia Brass Pipe Nominal Dia Copper Tubing O D Type L GPM 1 4 3 8 1 2 3 4 1 1 4 1 2 1 4 3 8 1 2 3 4 1 14 12 1 4 3 8 1 2 5 8 3 4 7 8 120 13 400 45 94 100 28 9 0 2 2 230 50 17 330 86 220 62 21 5 2 1 6 500 120 40 520 130 320 90 30 7 8 2 4 180 56 270 90 190 62 16 5 0 1 5 120 670 240 470 150 40 12 3 8 1 7 330 110 39 11 5 0 550 200 150 36 37 52 210 107 Nominal Equivalent Length of Standard Pipe in Feet Pipe Inside 180 Tee Tee Size Diameter 45 90 Close Thru Thru Inches Inches Elbow Elbow Ret Run Branch 2 067 1 35 61 5 30 8 2 59 5 55 12 30 3 08 11 60 2 469 1 62 73 5 36 8 3 09 6 61 14 70 3 68 13 20 3 068 2 01 91 5 45 8 3 84 8 23 18 20 4 57 16 40 4 026 2 64 120 01 60 0
9. 3PFR PLUNGER PUMP SERVICE MANUAL 3 FRAME SPLIT MANIFOLD 230 240 270 231 241 271 237 247 277 279 INSTALLATION AND START UP INFORMATION Optimum performance of the pump is dependent upon the entire liquid system and will be obtained only with the proper selection installation of plumbing and operation of the pump and accessories SPECIFICATIONS Maximum specifications refer to individual attributes It is not implied that all maximums can be performed simultaneously If more than one maximum is considered check with your CAT PUMPS supplier to confirm the proper performance and pump selection Refer to individual pump Data Sheets for complete specifications parts list and exploded view LUBRICATION Fill crankcase with special CAT PUMP oil per pump specifications SPFR 10 0z DO NOT RUN PUMP WITHOUT OIL IN CRANKCASE Change initial fill after 50 hours running period Thereafter change oil every 3 months or 500 hour intervals PUMP ROTATION Pump was designed for forward rotation to allow optimum lubrication of the crosshead area Reverse rotation is acceptable if the crankcase oil level is increased slightly above center dot to assure adequate lubrication PULLEY SELECTION Select size of motor pulley required to deliver the desired flow from Horsepower Requirement and Pulley Selection Chart refer to Tech Bulletin 003 or individual Data Sheet MOTOR SELECTION The motor or engine driving the pump must be of adequate h
10. 5 03 10 80 23 90 6 00 21 60 Arriving at a total line pressure loss consideration should then be given to pressure loss created by valves fittings and elevation of lines If a sufficient number of valves and fittings are incorporated in the system to materially affect the total line loss add to the total line length the equivalent length of line of each valve or fitting TYPICAL RESERVOIR TANK RECOMMENDED 6 TO 10 TIMES SYSTEM CAPACITY x Supply Line Bypass Line from regulator or unloader Level Sensing T Dia of pipe Device X D lt 7A Flexible Hose to Pump Bypass Line y from regulator or h unloader FILTER Minimum Two Baffles Sealed at Bottom Handy Formulas to Help You Q How can I find the RPM needed to get specific GPM Gallons Per Minute want A Desired RPM Desired GPM x Rated RPM Rated GPM Q Ihave to run my pump ata certain RPM How do figure the GPM I ll get A Desired GPM Desired RPM x Rated GPM Rated RPM Q Is there a simple way to find the approximate horsepower lIl need to run the pump A Electric Brake GPM x PSI 7 Standard 85 Horsepower Required 1460 Mech Efficiency Q What size motor pulley should use Pump RPM Motor Engine RPM Q How do calculate the torque for my hydraulic drive system A Torque ft lbs 3 6 Consult A Pump Pulley Outer Diameter x Engine Mfr em x PSI RPM Avoid Cavitation Damage
11. ainers Springs Seats and Valves The O Rings and valve adapters are different Keep parts in order as they are removed Reassembly Discharge NOTE For certain applications apply liquid gasket to O Ring crevices and seal surfaces Refer to Tech Bulletin 053 for model identification NOTE EPDM elastomers require silicone base lubricant NOTE Inlet and discharge valve parts are inter changeable One Valve Kit is needed for complete valve change Examine Spring Retainers for internal wear or breaks in the structure and replace as needed Examine the Spring for fatigue or breaks and place the new Spring into the Retainer over the plastic center guide Place the Spring Retainers in the upper deeper valve chambers They will rest on the machined ridge in each chamber Examine the Valves for wear or pitting and replace if necessary Install Valves over Springs with concave side down Examine Seat O Rings for wear and replace Place O Rings on lip of retainers Carefully square O Rings in the upper discharge valve chamber to avoid cutting O Ring when Seat is installed Examine Seats for pitting scale or ridges and replace if necessary Install Seat with concave side down so O Ring fits snugly into groove on Seat Examine both front and rear O Rings on the Discharge Valve Adapter and replace if necessary Lubricate O Rings and fit into grooves on outside of spacer Apply liquid gasket to the O Ring crevices on the O D
12. ation in Supply Tank Clogged Filters DIAGNOSIS AND MAINTENANCE One of the most important steps in a high pressure system is to establish a regular maintenance program This will vary slightly with each system and is determined by various elements such as the duty cycle the liquid being pumped the actual specifications vs rated specifications of the pump the ambient conditions the inlet conditions and the accessories in the system A careful review of the necessary inlet conditions and protection devices required before the system is installed will eliminate many potential problems CAT PUMPS are very easy pumps to service and require far less frequent service than most pumps Typically only common tools are required making in field service convenient however there are a few custom tools special to certain models that do simplify the process This service manual is designed to assist you with the disassembly and reassembly of your pump The following guide will assist in determining the cause and remedy to various operating conditions You can also review our FAQ or SERVICE sections on our WEB SITE for more facts or contact CAT PUMPS directly PROBLEM Low pressure Pulsation Water leak Under the manifold eInto the crankcase Knocking noise Inlet supply Bearing Pulley Oil leak Crankcase oil seals Crankshaft oil seals and o rings Drain plug Bubble gauge Rear cover Filler cap Pump runs extremely rou
13. cate wicks at initial start up Operate for 10 to 15 minutes to allow grease from LPS to penetrate the plunger surface then lubricate 2 Check for any signs of leaking at Bearing Covers Rear Cover Drain Plug or Bubble Oil Gauge 3 Check oil level and for evidence of water in oil Change crankcase oil on a regular schedule See Preventative Maintenance Check List as needed 3 Examine O Ring and Back up Ring on Plunger 4 Rotate Crankshaft by hand to feel for smooth bearing Retainer and replace if worn or cut Lubricate O Ring movement for ease of installation and to avoid damage to O Ring 5 Examine Crankshaft Oil Seals externally for drying First install NEW Gasket on Plunger Retainer then cracking or leaking O Ring then Back up Ring 6 Consult CAT PUMPS or your local distributor if crankcase 4 Apply Loctite 242 to threads and install short threaded service is required Refer to Tech Bulletin 035 end of Stud into Plunger Retainer See section II of the Plunger Pump Service Video for 5 Apply Loctite 242 to threads and thread Plunger additional information Retainer and Stud assembly with long threaded end of Stud into plunger rod Torque per chart PREVENTATIVE MAINTENANCE CHECK LIST ceca esis a oa Tae enen fo os E S Poilteaks x If other than CAT PUMPS special multi viscosity ISO68 oil is used change cycle should be every 300 hours Each system s maintenance cycle will be exclusive If system performance
14. equire 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 Products described hereon are covered by one or more of the following U S patents 3558244 3652188 3809508 3920356 3930756 and 5035580 World Headquarters CAT PUMPS 1681 94th Lane N E Minneapolis MN 55449 4324 Phone 763 780 5440 FAX 763 780 2958 e mail techsupport catpumps com www catpumps com International Inquiries E FAX 763 785 4329 e mail intlsales catpumps com L UNF The Pumps with Nine Lives CAT PUMPS U K LTD 1 Fleet Business Park Sandy Lane Church Crookham Fleet Hampshire GU52 8BF England Phone Fleet 44 1252 622031 Fax 44 1252 626655 e mail sales catpumps co uk N V CAT PUMPS INTERNATIONAL S A Heiveldekens 6A 2550 Kontich Belgium Phone 32 3 450 71 50 Fax 32 3 450 71 51 7 e mail cpi catpumps be www catpumps be CAT PUMPS DEUTSCHLAND GmbH Buchwiese 2 D 65510 Idstein Germany Phone 49 6126 9303 0 Fax 49 6126 9303 33 B e mail catpumps t online de www catpumps de PN 30006 Rev K 7312 Removal of Discharge Manifold and socket head screws CAUTION Before commencing with service shut
15. f liquids may be increased by high RPM high temperatures low vapor pressures or high viscosity and may require pressurized inlet and C A T to maintain adequate inlet supply DO NOT USE C A T WITH SUCTION INLET T Optimum pump performance is obtained with 20 PSI 1 4 BAR inlet pressure and a C A T for certain applications With adequate inlet plumbing most pumps will perform with flooded suction Maximum inlet pressure is 60 PSI 4 BAR m After prolonged storage pump should be rotated by hand and purged of air to facilitate priming Disconnect the discharge port and allow liquid to pass through pump and measure flow INLET ACCESSORIES are designed to protect against overpressurization control inlet flow contamination or temperature and provide ease of servicing A shut off valve is recommended to facilitate maintenance g Installation of a C A T is essential in applications with stressful conditions such as high temperatures booster pump feed or long inlet lines Do not use C A T with negative inlet pressure A stand pipe can be used in some applications to help maintain a positive head at the pump inlet Inspect and clean inlet filters on a regular schedule to avoid flow restriction A pressure transducer is necessary to accurately read inlet pressure Short term intermittent cavitation will not register on a standard gauge All accessories should be sized to avoid restricting the inlet flow All accessories should be c
16. gh Inlet conditions Pump valves Pump seals Premature seal failure PROBABLE CAUSE Worn nozzle Belt slippage Air leak in inlet plumbing Pressure gauge inoperative or not registering accurately Relief valve stuck partially plugged or improperly adjusted Inlet suction strainer filter clogged or improperly sized Abrasives in pumped liquid Leaky discharge hose Inadequate liquid supply Severe cavitation Worn seals Worn or dirty inlet discharge valves Faulty Pulsation Dampener Foreign material trapped in inlet discharge valves Worn High Pressure or Lo Pressure Seals Worn adapter o rings Humid air condensing into water inside the crankcase Excessive wear to seals Inadequate inlet liquid supply Broken or worn bearing Loose pulley on crankshaft Worn crankcase oil seals Worn crankshaft oil seals or o rings on bearing cover Loose drain plug or worn drain plug o ring Loose bubble gauge or worn bubble gauge gasket Loose rear cover or worn rear cover o ring Loose filler cap or excessive oil in crankcase Restricted inlet or air entering the inlet plumbing Stuck inlet discharge valves Leaking High Pressure or Lo Pressure seals Scored plungers Over pressure to inlet manifold Abrasive material in the liquid being pumped Excessive pressure and or temperature of pumped liquid Running pump dry Starving pump of adequate liquid
17. it of the special materials may be snug and require gently driving the LPS into position with a cylinder of the same diameter to assure a square seating and no damage to the LPS Examine Hi Pressure Seal for wear and replace if necessary Invert Inlet Manifold with crankcase side down and press the new seal into the manifold cham ber with v side up metal side down until completely seated Rotate Crankshaft by hand so the two outside plungers are extended equally Lubricate Plungers and carefully slide the Inlet Manifold over the Plungers and press into the Crankcase Replace two 2 M10 Inlet Manifold Socket Head Screws and Washers hand tighten and then torque per chart If the valves have not been serviced examine O Rings on both the Discharge Adapter and Inlet Valve Adapter for cuts or wear and replace as needed Lubricate O Rings and fit into grooves on outside of adapters Carefully slip the Discharge Manifold onto Plungers and press the exposed Discharge Valve Adapters into the Inlet Manifold chambers Tap with a soft mallet until seated Replace the four 4 M10 Discharge Manifold Socket Head Screws and Washers and hand tighten Then torque per chart Ceramic Plunger Arrangement SERVICING THE PLUNGERS Disassembly Exercise caution not to over torque the Plunger Retainer 6 Re install the Seal Retainers with the slots to the top 1 Remove Discharge and Inlet Manifold as described and bottom
18. new seal kit Increase frequency of service Replace plungers Reduce inlet pressure per specifications Install proper filtration at pump inlet and clean regularly eCheck pressure and inlet liquid temperature DO NOT RUN PUMP WITHOUT LIQUID Increase hose one size larger than inlet port size Pressurize and install C A T Replace manifold Check liquid compatibility
19. oader valve Low vapor pressure liquids such as solvents require a booster pump and C A T to maintain adequate inlet supply Q Higher viscosity liquids require a positive head and a C A T to assure adequate inlet supply 1 Higher temperature liquids tend to vaporize and require positive heads and C A T to assure adequate inlet supply When using an inlet supply reservoir size it to provide adequate liquids to accom modate the maximum output of the pump generally a minimum of 6 10 times the GPM however a combination of system factors can change this requirement provide adequate baffling in the tank to eliminate air bubbles and turbulence install diffusers on all return lines to the tank INLET LINE SIZE should be adequate to avoid starving the pump T Line size must be a minimum of one size larger than the pump inlet fitting Avoid tees 90 degree elbows or valves in the inlet line of the pump to reduce the risk of flow restriction and cavitation O The line MUST be a FLEXIBLE hose NOT a rigid pipe and reinforced on SUCTION systems to avoid collapsing The simpler the inlet plumbing the less the potential for problems Keep the length to a minimum the number of elbows and joints to a minimum ideally no elbows and the inlet accessories to a minimum 0 Use pipe sealant to assure air tight positive sealing pipe joints INLET PRESSURE should fall within the specifications of the pump Acceleration loss o
20. off drive electric motor gas or diesel engine and turn off water supply to pump Relieve all discharge line pressure by triggering gun or opening valve in discharge line After servicing is completed turn on water supply to pump start drive reset pressure regulating device and secondary valve read system pressure on the gauge at the pump head Check for any leaks vibration or pressure fluctuations and resume operation SERVICING THE VALVES Disassembly 1 Remove the four 4 Socket Head Screws and Spring Washers from end of Manifold Support the Discharge Manifold from the underside and tap with a soft mallet to separate from the Inlet Manifold Carefully place Discharge Manifold on work surface with crankcase side up From the three 3 lower and shallow inlet chambers remove the Inlet Valve Adapters with front and rear O Rings These adapters are not held securely in position and may fall out as the Discharge Manifold is removed Remove the Seats Valves Springs and Retainers from the inlet chambers From the three 3 upper and deeper discharge chambers remove the Discharge Valve Adapters with front and rear O Rings These Adapters generally re main with the Discharge Manifold as it is removed Insert two screwdrivers under the lip of the Adapter and pry the Adapter from the manifold chamber Remove the Seats Valves Springs and Retainers from the discharge chambers NOTE The inlet and discharge use the same Ret
21. ompatible with the solution being pumped to prevent premature failure or malfunction Optional inlet protection can be achieved by installing a pressure cutoff switch between the inlet filter and the pump to shut off pump when there is no positive inlet pressure o oOo oc oOo BY PASS TO INLET Care should be exercised when deciding the method of by pass from control valves q It is recommended the by pass be directed to a baffled reservoir tank with at least one baffle between the by pass line and the inlet line to the pump T Although not recommended by pass liquid may be returned to the inlet line of the pump if the system is properly designed to protect your pump A PRESSURE REDUCING VALVE must be installed on the inlet line BETWEEN THE BY PASS CONNECTION AND THE INLET TO THE PUMP to avoid excessive pressure to the inlet of the pump It is also recommended that a THERMO VALVE be used in the by pass line to monitor the temperature build up in the by pass loop to avoid premature seal failure T A reinforced flexible low pressure hose rated up to 300 PSI should be used for routing by pass back to the pump inlet T Caution should be exercised not to undersize the by pass hose diameter and length Refer to Technical Bulletin 64 for additional information on the size and length of the by pass line T Check the pressure in the by pass line to avoid overpressurizing the inlet 4 The by pass line should be connected to the pump inlet line
22. orsepower to maintain full RPM when the pump is under load Select the electric motor from the Horsepower Requirement Chart according to required pump discharge flow maximum pressure at the pump and drive losses of approximately 3 5 Consult the manufacturer of gas or diesel engine for selection of the proper engine size MOUNTING Mount the pump on a rigid horizontal surface in a manner to permit drainage of crankcase oil An uneven mounting surface will cause extensive damage to the pump base To minimize piping stress use appropriate flexible hose to inlet and discharge ports Use the correct belt make sure pulleys are aligned Excessive belt tension may be harmful to the bearings Hand rotate pump before starting to be certain shaft and bearings are free moving LOCATION If the pump is used in extremely dirty or humid conditions it is recom mended pump be enclosed Do not store or operate in excessively high temperature areas or enclosed without proper ventilation INLET CONDITIONS Refer to complete Inlet Condition Check List in this manual before starting system DO NOT STARVE THE PUMP OR RUN DRY Temperatures above 130 F are permissible Add 1 2 PSI inlet pressure per each degree F over 130 F Elastomer or RPM changes may be required See Tech Bulletin 002 or call CAT PUMPS for recommendations C A T Installation of a C A T Captive Acceleration Tube is recommended in applications with stressful inlet conditions such as high tem
23. peratures booster pump feed long inlet lines or quick closing valves DISCHARGE CONDITIONS OPEN ALL VALVES BEFORE STARTING SYSTEM to avoid deadhead overpressure condition and severe damage to the pump or system Install a Pulsation Dampening device on the discharge head or in the discharge line as close to the head as possible Be certain the pulsation dampener Prrrrr o lator is properly precharged for the system pressure refer to individual Data Sheet A reliable Pressure Gauge should be installed near the discharge outlet of the high pressure manifold This is extremely important for adjusting pressure regulating devices and also for proper sizing of the nozzle or restricting orifice The pump is rated for a maximum pressure this is the pressure which would be read at the discharge manifold of the pump NOT AT THE GUN OR NOZZLE Use PTFE liquid sparingly or tape to connect accessories or plumbing Exercise caution not to wrap tape beyond the last thread to avoid tape from becoming lodged in the pump or accessories This condition will cause a malfunction of the pump or system PRESSURE REGULATION 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 The primary pressure device must be installed on the discharge side of the pump The function of the primary pressure regulating device is to protect the pump from over p
24. ressurization which can be caused by a plugged or closed off discharge line Over pressurization can severely damage the pump other system components and can cause bodily harm The secondary safety relief device must be installed in line between the primary device and the pump or on the opposite side of the manifold head This will ensure pressure relief of the system if the primary regulating device fails Failure to install such a safely device will void the warranty on the pump When the high pressure system is left running with the trigger gun off the by pass liquid can be routed to drain or to the pump inlet If routed to the pump inlet the by pass liquid can quickly develop excessive heat and result in damage to the pump A THERMO VALVE installed in the by pass line is recommended to protect the pump An AUTO SHUT OFF ASSEMBLY may also be used NOZZLES A worn nozzle will result in loss of pressure Do not adjust pressure regulating device to compensate Replace nozzle and reset regulating device to system pressure PUMPED LIQUIDS Some liquids may require a flush between operations or before storing For pumping liquids other than water contact your CAT PUMPS supplier STORING For extended storing or between use in cold climates drain all pumped liquids from pump and flush with antifreeze solution to prevent freezing and damage to the pump DO NOT RUN PUMP WITH FROZEN LIQUID refer to Tech Bulletin 083 A WARNING All systems r
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