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Pentair SC-170, Installation And Service Manual, Page: 1 / 44

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Pentair SC-170 Installation And Service Manual Download Page 1

NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible 

party who maintains the system.

MODELS  

MA-95L, MA-95M, MA-120L, MA-120L-HD, MA-120M,

SC-170, SC-170L, SC-170H, SC-170DD,

RO-174, RO-185

TRIPLEX PUMPS

INSTALLATION AND SERVICE MANUAL

Part # AP-03-104  |  © 2014 Pentair Ltd.  |  01/14/14 

Summary of Contents for SC-170

Page 1: ...to the owner of the equip ment or to the responsible party who maintains the system MODELS MA 95L MA 95M MA 120L MA 120L HD MA 120M SC 170 SC 170L SC 170H SC 170DD RO 174 RO 185 TRIPLEX PUMPS INSTALLATION AND SERVICE MANUAL Part AP 03 104 2014 Pentair Ltd 01 14 14 ...

Page 2: ...ead Pin and Wiper Box Assembly Disassembly 22 General 22 Installing Wrist Pin Bushings 23 Pinning the Crosshead 23 Order of Assembly 23 Precision Crankpin Crankthrow Bearings 23 24 Oil Scoop 24 Wiper Box Assembly 24 General 24 Poly Pak Seal 24 Mechanical Oil Seal 24 Inserting the Plunger 25 Stuffing Box Packing and Plunger Assemblies 25 General 25 Spring Loaded Packing 25 J Style Stuffing Box Plun...

Page 3: ...nuous Working Pressure 1 264 psi Hydrostatic Test Discharge Suction 1 896 psi 425 psi Discharge Connection Size 2 1 2 NPTF Suction Connection Size 5 NPTF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block Ductile Iron Stainless Steel B148 C955 A105 A536 80 55 06 Various Grades MA 95L ENGINEERING DATA Liquid End Continued ...

Page 4: ...Pressure 3 250 psi Hydrostatic Test Discharge Suction 5 400 psi 425 psi Discharge Connection Size 2 ANSI 1500RF Suction Connection Size 3 ANSI 150RF Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block B148 C955 A105 Plunger Type Rokide Stainless Steel Chromium Oxide Coated 316 S S Stuffing Boxes Field Removable and Replaceable Aluminum Bronze Carbon Steel B148 C955 1020 M...

Page 5: ...tatic Test Discharge Suction 2 523 psi 425 psi Discharge Connection Size 2 1 2 ANSI 900 LF Suction Connection Size 5 ANSI 150 FF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block Ductile Iron Stainless Steel B148 C955 A105 A536 80 55 06 Various Grades MA 120L ENGINEERING DATA Liquid End Continued Plunger Type Rokide Stai...

Page 6: ... psi Hydrostatic Test Discharge Suction 2 523 psi 425 psi Discharge Connection Size 2 1 2 ANSI 900 LF Suction Connection Size 5 ANSI 150 FF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block Ductile Iron Stainless Steel B148 C955 A105 A536 80 55 06 Various Grades MA 120L HD ENGINEERING DATA Liquid End Continued Plunger Ty...

Page 7: ...ntinuous Working Pressure 3 691 psi Hydrostatic Test Discharge Suction 5 400 psi 425 psi Discharge Connection Size 2 NPTF Suction Connection Size 3 NPTF Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block B148 C955 A105 Plunger Type Rokide Stainless Steel Chromium Oxide Coated 316 S S MA 120M ENGINEERING DATA Liquid End Continued Stuffing Boxes Field Removable and Replace...

Page 8: ...on 3 250 psi 425 psi Discharge Connection Size 2 1 2 ANSI 900LF Suction Connection Size 5 ANSI 150LF Available Liquid End Materials ASTM Nickel Aluminum Bronze Forged Steel Block Ductile Iron B148 C955 A105 A536 80 55 06 Plunger Type Rokide Stainless Steel Rokide TX 316 S S 416 S S SC 170L ENGINEERING DATA Liquid End Continued Stuffing Boxes Field Removable and Replaceable Aluminum Bronze Carbon S...

Page 9: ...iquid End Plunger Size Range Diameter 2 1 2 Thru 3 1 8 Maximum Continuous Working Pressure 3 000 psi Hydrostatic Test Discharge Suction 4 500 psi 425 psi Discharge Connection Size 2 1 2 NPTF Suction Connection Size 4 NPTF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Forged Steel Block A105 SC 170 ENGINEERING DATA Liquid End Continued Plunger Type Rokide Sta...

Page 10: ...m Life Expectancy Main Bearings L10 45 000 hr Liquid End Plunger Size Range Diameter 1 3 4 Thru 2 3 8 Maximum Continuous Working Pressure 5 600 psi Hydrostatic Test Discharge Suction 9 640 psi 425 psi Discharge Connection Size 2 NPTF Suction Connection Size 3 NPTF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Forged Steel Block 4140 SC 170H ENGINEERING DATA ...

Page 11: ...aterial 2 17 4PH S S Connecting Rod Automotive Type Ductile Iron Average Crosshead Speed At 450 rpm 318 fpm Minimum Life Expectancy Main Bearings L10 45 000 hr Liquid End Plunger Size Range Diameter 4 Thru 4 1 2 Maximum Continuous Working Pressure 2 020 psi Hydrostatic Test Discharge Suction 3 250 psi 425 psi Discharge Connection Size 3 ANSI 600FF Suction Connection Size 6 ANSI 150FF Available Liq...

Page 12: ... 2 Maximum Continuous Working Pressure 2 075 psi Hydrostatic Test Discharge Suction 3 100 psi 425 psi Discharge Connection Size 2 1 2 900 NPTF Suction Connection Size 5 150 NPTF Maximum Working Pressure Suction Manifold 275 psi Available Liquid End Materials ASTM Nickel Aluminum Bronze Stainless Steel B148 C955 Various Grades Plunger Type Rokide Stainless Steel Chromium Oxide Coated 316 S S RO 174...

Page 13: ...unger Size Range Diameter 2 Thru 3 1 2 Maximum Continuous Working Pressure 2 076 psi Hydrostatic Test Discharge Suction 3 250 psi 425 psi Discharge Connection Size 2 1 2 NPTF Suction Connection Size 5 NPTF Available Liquid End Materials ASTM Nickel Aluminum Bronze Stainless Steel Block B148 C955 2205 Duplex S S Plunger Type Rokide Stainless Steel Chromium Oxide Coated 316 S S RO 185 ENGINEERING DA...

Page 14: ... Connections 2 1 2 ANSI 900 LF 2 1500 2 1 2 ANSI 900 LF 2 1 2 ANSI 900 LF 2 1500 2 1 2 ANSI 900 LF 3 600 FF 2 1 2 ANSI 900 LF 2 1 2 ANSI 900 LF B Suction Connections 5 ANSI 150 FF 3 150 5 ANSI 150 FF 5 ANSI 150 FF 3 150 5 ANSI 150 FF 6 150 FF 5 ANSI 150 FF 5 ANSI 150 FF C1 49 13 16 48 7 16 49 13 16 49 13 16 48 7 16 48 7 8 49 13 16 49 13 16 49 13 16 C2 38 1 4 37 1 2 38 1 4 38 1 4 37 1 2 38 38 1 4 3...

Page 15: ...ION B6 B5 CRADLE DRAIN B7 OIL DRAIN B4 B3 B1 B2 DISCHARGE CONNECTION 6 5 16 2 7 8 1 1 2 3 21 5 8 10 13 16 PUMP 7 8 DRILL 4 PLACES 27 13 16 CRANKSHAFT 2 7 16 A4 A5 7 A3 A2 A1 OIL PRESSURE GAUGE LUBE OIL FILTER OIL PRESSURE SET VALVE DIMENSIONAL DRAWINGS Cast Fluid End Block Fluid End ...

Page 16: ...ovide ample access to fluid end power end and associated drive elements Do not expect good maintenance to result if the pump is positioned on muddy terrain or in a dirty cramped dimly lighted area The supply tank s should be large to allow dissolved air and other gases to escape from the liquid and allow suspended solids to settle out before entering pump A system employing dams and settling chamb...

Page 17: ... acceleration head effects may be reduced by the use of the shortest possible suction line sized to reduce liquid velocity to a very low speed This is often more economi cal than the use of charge pumps or expensive suction stabiliz ers NOTE Charge pumps should be sized to 150 of rated pump volume Charge pumps need to be centrifugals not a positive displacement pump A charging pump is usually not ...

Page 18: ...frozen relief valve line provides NO protection to either the pump or operating personnel The ability of a reciprocating pump to be self priming depends on the ratio of the swept displaced volume in the cylinder to the unswept clearance volume at the end of the stroke This depends on the design of the fluid end and on the plunger size selected Choice of the largest size plunger for a particular fl...

Page 19: ...SED SUCTION PULSATION DAMPENER IF USED DISCHARGE LINE SEE NOTE 7 FULL OPENING DISCHARGE LINE VALVE SWING CHECK VALVE WITH FULL OPENING SEAT PRESSURE RELIEF VALVE AND COLD WEATHER DRAIN SEE NOTE 9 CENTERLINE OF PUMP SUCTION INLET SEE NOTE 1 ECCENTRIC REDUCER WITH FLAT SIDE UP PRESSURE GAUGE AND BLOCK VALVE FLEXIBLE HOSE OR EXPANSION JOINT SEE NOTE 7 SUCTION INLET LINE SEPARATE LINE REQUIREDFOR EACH...

Page 20: ...usted greasy or broken grooves Shut off power to driver before servicing drive or pump WARNING Do not operate without appropriate guards in place DIRECTION OF ROTATION Before placing pump in operation check that crankshaft rotation agrees with the arrows cast on top of the power frame by briefly jogging the electric motor Crankshaft rotation must be clockwise as viewed from the right side of pump ...

Page 21: ...ng position Measure the gap existing between the frame face and carrier flange The correct thickness of the shim set to be installed equals the measure gap plus about 010 No pre load After installing above shim set a dial indicator may be used against the end of the shaft to confirm the shim selection Bump the shaft in one direction and zero the dial indicator Bump the shaft the opposite way If sh...

Page 22: ...haft which tends to distort its geometry Cups outer races of tapered roller bearings may be extracted from bearing carrier using a conventional bearing puller tool of the automotive type widely available Do not attempt to use heat on a bearing carrier as this will result in severe distortion out of round Replace the bearing carrier if broken or out of round CONNECTING ROD CROSSHEAD EXTENSION ROD C...

Page 23: ...n through the bosses of the crosshead A mishap during in sertion can occur caus ing the ruin of the pin or the crosshead if during application of pres sure a Pin is not aligned absolutely square with the crosshead b Crosshead is not sup ported on v blocks so it can roll while under load c Con necting rod is not ful ly support ed so pin cannot en ter the bushing without damage to it This will damag...

Page 24: ...frame and are machined to lightly contact the crankshaft cheek No adjustment is required WIPER BOX ASSEMBLY GENERAL Extension rod wiper boxes sometimes referred to as the diaphragm stuffing box or stripper housing assembly serve two important functions retention of crankcase oil in the power end and exclu sion of dirt and water Myers Aplex Series has developed a unique sealing set which operates o...

Page 25: ...ewed tightly onto the box and contacts its face The spring is providing all of the initial compression and adjustment No adjustment is provided by the gland Since the force exerted by the spring is contingent on the space provided for it the correct lengths of all rings is essential for good tensioning Spring A stiff Inconel spring which closely fits the bore of the stuffing box is used in this as...

Page 26: ...ll NOT usually cause it to drip at all but it can ruin the box in time Lightly oil each ring and the box bore and then lightly tap in each ring separately with the rings facing correctly This is most easily done before installing the plunger Lantern rings are provided with O D and I D reliefs and two or more oil holes to allow lubricant to reach the plunger After the last unit of Styles 838 and 85...

Page 27: ...ers in produced water applications For this service Rock Drill Lubricant is a popular and effective packing lubricant Plungers in CO2 ethane or other very cold liquid services may use brake fluid This fluid does not congeal into a solid which cannot enter the packing Consider the use of an air sealed cradle into which dry instrument air may be directed excluding the moisture which causes plunger i...

Page 28: ...eat An anti seizing lubricant applied to all threads is good insurance against future difficulty SETTING THE VALVE SEAT Effective pressure sealing between tapered male seat and tapered female fluid end deck is possible ONLY if the tapers are absolutely clean and dry just prior to installation Thoroughly clean surfaces using a clean solvent Dry with a CLEAN shop towel Examine the cleaned fluid end ...

Page 29: ...mation VALVE DISC OPTIONS Myers Aplex Series acetal resin discs made of DuPont Delrin are machined flat and smooth to produce perfect sealing on the lapped flat face of the seat Used successfully in thousands of applications these discs are light slightly flexible under load and seal well even at high pump speeds providing smooth pump action Acetal resins are very resistant to most corrodents are ...

Page 30: ...Myers Aplex Series Industries can provide its unique patented valve to fit nearly all brands and models of multiplex pumps An Myers Aplex Series seat setting puller tool is available too Trouble Possible Cause Remedy Excessive heat in power end Above 180ºF Pump operating backward Correct rotation Insufficient oil in power end Fill to proper level Excessive oil in power end Drain to proper level In...

Page 31: ...Clean or remove Relief bypass pressure valves leaking Repair Suction and or discharge piping vibrates or pounds Piping too small and or too long Increase size and decrease length Use booster pump Use suction and or discharge pulsation dampeners Worn valves or seats Replace or reface Piping inadequately supported Improve support at proper locations Pump vibrates or pounds Gas in liquid Submerge ret...

Page 32: ...quently Many times plungers are replaced and bushings ignored Plunger misalignment Realign Plungers must operate concentrically in stuffing box Wear of liquid end parts Abrasive or corrosive action of liquid Check valves and seats frequently at start up to determine schedule for replacing etc Eliminate sand abrasive air entering pump Incorrect material Install correct materials Liquid end cylinder...

Page 33: ...19 22 10 2 3 4 5 6 7 8 9 24 17 14 11 13 15 16 12 18 20 1 17 21 23 19 2 3 4 5 6 7 10 8 9 22 23 14 14 Power Frame Assembly Connecting Rod Crosshead Wiper Box Assembly MA 95L MA 95M MA 120L MA 120L HD MA 120M SC 170L SC 170 SC 170H RO 185 Item Quantity Description Part Number 1 1 Power Frame 7204 0305 00K 2 1 Crankcase Cover 7204 0304 00C 3 14 3 8 NC Hex Head Cap Screw x 3 4 Long 100 038034 273 4 1 G...

Page 34: ...tion Part Number 1 2 1 1 Crankshaft Assembly includes items 1 2 Crankshaft Drive Key PE102K 7204 0313 00D 146 078634 236 3 4 2 2 Crankshaft Kit includes items 1 2 3 4 Bearing Cone Tapered Roller Bearing Cup PE102KB 203 168000 999 202 458000 999 5 1 Bearing Carrier Drive Side 7204 0018 00C 6 2 O Ring Nitrile Rubber 110 000271 201 7 12 5 8 NC Hex Head Cap Screw 1 3 4 Long 100 058134 273 8 12 5 8 Loc...

Page 35: ... 22 20 18 12 19 25 24 11 13 21 14 16 17 15 7 8 9 23 1 3 4 6 5 26 28 27 2 31 Crankshaft Assembly 4 1 4 Stroke Auburn Gear 8 Right Hand Drive SC 170L SC 170 SC 170H Item Quantity Description Part Number 1 2 27 1 1 1 Crankshaft Assembly includes items 1 2 27 Crankshaft Spline Adapter Snap Ring PE315K 7204 1164 00A 7204 1163 00A 226 000237 999 3 4 2 2 Crankshaft Kit includes items 1 2 27 3 4 Bearing C...

Page 36: ...rt Number 15 1 Switchgauge Murphy 7509 0008 00A 16 1 Lube Oil Pump 7204 0325 00A 17 1 3 8 x 1 8 Hex Pipe Bushing Hex Iron 161 038018 451 18 1 1 x 15 Oil Filter 7602 3005 00A 19 1 1 1 4 Oil Filter Plug 7204 0314 00A 20 1 Frame Plug Drive Side 7204 0315 00A 21 8 Screw Cap Hex Head 5 16 18UNC x 7 8 Long 100 516078 273 22 1 O Ring Nitrile Rubber 110 000210 201 23 2 3 8 Pipe Plug Socket Hd 170 038003 2...

Page 37: ...0D 6 12 1 x 6 1 8 Liner Stud 7204 1143 00A 7 12 1 8NC Nut Heavy Hex 133 100008 243 8 32 3 4 Stud Flange 7507 2735 00A 9 32 3 4 10NC Nut Heavy Hex 133 034010 243 10 2 Stud Power Frame to Fluid End 7204 1227 00A 11 2 1 1 4 7NC Nut Heavy Hex 133 114007 243 12 3 Seal Ring 7204 1237 00A 13 3 O Ring 252 110 000252 201 14 3 Pipe Plug 3 4 170 037002 237 14 1 3 2 1 4 7 6 11 10 12 13 9 8 Fluid End Assembly ...

Page 38: ... Stud Discharge Flange 7507 2736 00A 7 16 7 8 9 Thread Nut Hvy Hex 133 078009 243 8 8 5 8 x 2 3 4 Stud Suction Flange 7507 2732 00A 9 8 5 8 11 Thread Nut Hvy Hex 133 058011 243 10 1 Liquid End 7204 0013 00E 11 3 3 4 Hex Head Pipe Plug Stainless Steel 170 034002 405 12 2 1 2 Hex Head Pipe Plug Stainless Steel 170 012002 405 13 2 Stud Power Frame to Liquid End 7204 0865 00A 14 2 1 1 4 7 Thread Nut H...

Page 39: ...Valve Cover Screw 7204 0345 00B 3 3 O Ring 110 000243 201 4 12 1 x 4 7 8 Stuffing Box Stud 7507 2791 00A 5 12 1 8 Thread Nut Hvy Hex 133 100008 243 6 1 Liquid End Forged Steel Weldment 7204 0861 02E 7 4 1 4 Steel Hex Head Pipe Plug Optional 170 014002 237 8 2 Stud Power Frame to Liquid End 7204 0865 00A 9 2 1 1 4 7 Thread Nut Heavy Hex 133 114007 243 8 7 3 4 5 6 2 1 9 8 7 3 4 5 6 2 1 9 10 6 SC 170...

Page 40: ...meter Baffle 2 Stuffing Box Seal Nitrile Rubber 3 Stuffing Box Steel 4 Stuffing Box Stainless Steel 4 Stuffing Box Nickel Alum Bronze 4 Gland Steel 5 Gland Nickel Alum Bronze 5 3 1 2 7204 0016 00A 7204 0054 00A 7204 0385 00B 7204 0385 10B 7204 0012 10B 7204 0377 00B 7204 0052 00B 3 3 8 7204 0016 00A 7204 0054 00A 7204 0385 00B 7204 0385 10B 7204 0012 10B 7204 0377 00B 7204 0052 00B 3 1 4 7204 0016...

Page 41: ...L SC 170DD Item Quantity Description Part Number 1 1 Piston Liner 4 High Chrome Iron 7204 1106 00K 2 1 Piston Rod 7204 1056 00B 3 4 1 Piston Assembly Black Part of 3 Above 7204 1146 00K 5 1 Gasket Liner 316 049042 508 6 1 Nut Piston Rod Self Locking 151 100008 273 SC 170L SC 170DD Item Quantity Description Part Number 7 4 Stud included in FE350 7204 1143 00A 8 4 Nut 1 NC included in FE350 127 1000...

Page 42: ...ut 1 NC 127 100008 243 9 1 Piston Liner Flange 7204 1054 00B 10 1 Baffle 7204 0016 00A 11 1 O Ring Furnished with item 3 110 000214 201 Qty 5 per pump 4 1 2 Piston Assembly 1 7 3 4 5 6 2 8 SC 170 Item Quantity Description Part Number 1 1 Piston Liner 7204 1108 00K 2 1 Piston Rod 7204 1056 00B 3 1 Piston Cup Assembly 4 1 2 7201 0731 00K 4 Piston Rubber Furnished with Above 7201 0732 00A SC 170 Item...

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Page 44: ...ts or malfunctions resulting from failure to properly install operate or maintain the unit in accordance with the printed instructions provided b to failures resulting from abuse accident or negligence c to normal maintenance services and parts used in connection with such service d to units that are not installed in accordance with applicable local codes ordinances and good trade practices e if t...

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