MA-155L ENGINEERING DATA MA-155L ENGINEERING DATA Power End Liquid End (Continued) Model Triplex Pump MA-155L Plunger Type Rokide Stainless Steel: ® Chromium Oxide-Coated 316 S.S. Maximum Input HP at Speed 155 at 450 rpm Stuffing Boxes, Field-Removable and Replaceable: Rated Continuous Plunger Load 9,087 lbs.
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MA-155M ENGINEERING DATA MA-155M ENGINEERING DATA Power End Liquid End (Continued) Model Triplex Pump MA-155M Plunger Type Rokide Stainless Steel: ® Chromium Oxide-Coated 316 S.S. Maximum Input HP at Speed 155 at 450 rpm Stuffing Boxes, Field-Removable and Replaceable: Rated Continuous Plunger Load 9,087 lbs.
MA-155M-HD ENGINEERING DATA MA-155M-HD ENGINEERING DATA Power End Liquid End (Continued) Model Triplex Pump MA-155M-HD Plunger Type Rokide ® Stainless Steel: Chromium Oxide-Coated 316 S.S. Maximum Input HP at Speed 175 at 450 rpm Stuffing Boxes, Field-Removable and Replaceable: Rated Continuous Plunger Load 10,259 lbs.
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SC-230 ENGINEERING DATA SC-230 ENGINEERING DATA Power End Liquid End (Continued) Model Triplex Pump SC-230 Available Liquid End Materials, ASTM: Steel A105 Maximum Input HP at Speed 310 at 450 rpm Piston Type Rubber Rated Continuous Plunger Load 18,320 lbs. Liners Hardened Steel Stroke...
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RO-261 ENGINEERING DATA RO-261 ENGINEERING DATA Power End Liquid End (Continued) Model Quintuplex Pump RO-261 Plunger Type Rokide Stainless Steel: ® Chromium Oxide-Coated 316 S.S. Maximum Input HP at Speed 200 at 450 rpm Stuffing Boxes, Field-Removable and Replaceable: Rated Continuous Plunger Load 11,750 lbs.
INSTALLATION, OPERATION, access to fluid end, power end, and associated drive elements. Do not expect good maintenance to result if LUBRICATION, MAINTENANCE AND the pump is positioned on muddy terrain, or in a dirty, cramped, dimly lighted area! STORAGE INSTRUCTIONS 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.
suction line has a block valve at the supply tank, a for the computation of available NPSH, acceleration suitable relief valve is suggested to relieve the suction head, friction head, vapor pressure and submergence piping from any possible dangerous overpressure from effects duly considered.
LUBRICATION direct, well supported and solidly anchored. Avoid “dead” ends and abrupt direction changes. Myers Aplex Series pumps use S.A.E. 40 wt. nondetergent oil in the crank case. This oil requires BYPASS PIPING only a nonfoaming additive and should possess good water separation (antiemulsion) character is tics.
C.D. GENERAL Myers Aplex Series crankshaft suspension uses two single-row tapered bearings, which are shim adjusted to provide the correct running clearance. Sheaves must be balanced to prevent abnormal Thorough cleaning of all components prior to assembly vibration.
Rotate must be fully round, chrome plated, and finish ground the crankshaft slowly by hand, seating all rollers into to the above sizes. (Myers Aplex Series does not running position. perform this function.)
Replacement bushings are furnished prebored by foreign matter which prevent proper fitting, or which Myers Aplex Series which usually eliminates the need might tend to score the rubbing surfaces. Clean to ream the installed bushing bore. However, due to...
WRIST PIN to above diameter. The hole in the wrist pin should line up with the hole (Myers Aplex Series does not offer this service.) in the connecting rod. Install the shoulder bolt through Connecting rod/cap bore must be perfectly round the wrist pin and thread into connecting rod.
WIPER TAPERED THREADS Myers Aplex Series has developed a unique sealing set which operates on a hardened and ground stainless steel extension rod (often called “pony” rod), and a steel baffle disc affording protection against leaking plunger packing. The seals require no adjustment, only Insert the extension rod through the wiper seals with correct and careful assembly.
Three (3) rings of chevron or compression packing GENERAL are installed next. For compression packing, install them with the skive intersections 180º apart to Myers Aplex Series pumps all feature field removable discourage leaking. and replaceable stuffing boxes with plungers separable from the extension rods.
After the last unit of Styles 838 and 858 INSTALLING THE STUFFING BOX packing is in place, generously oil the lips of all seal rings to ease plunger entry. Myers Aplex Series stuffing JACK SCREW HOLES FOR BOX REMOVAL boxes derive their alignment...
Apply light forces only on the ends of the VALVE SPRING plunger. Do not hammer or pry. GUIDE CAGE All threads on Myers Aplex Series plungers must be POLYURETHANE INSERT CLEAN and oiled before assembly. Stainless steel O-RING (although very corrosion resistant) has a tendency to VALVE BODY gall and seize.
VALVE SPRING OPTIONS flashlight, and remove all deposits of gyp, salt, or other incrustation. Using emery cloth, lightly rub out any All Myers Aplex Series valve springs are made of minor imperfections found in the deck taper. Inconel material, precisely designed and fabricated.
For disc valves unscrew the stem from the seat. Remove the cage, spring and valve from the fluid end. Attach the Myers Aplex Series puller head to the puller stem, tighten their tapered threads with a pipe wrench applied to the knurled areas of the puller stem and head.
TROUBLE LOCATION AND REMEDY Trouble Possible Cause Remedy Pump fails to deliver Speed incorrect. Change drive ratio or tighten required capacity. Belts slipping. belts (if loose). Correct motor speed. Air leaking into pump. Seal with compounds. Liquid cylinder valves, Reface or lap valves and seats; seats or plungers worn.
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TROUBLE LOCATION AND REMEDY Trouble Possible Cause Remedy Consistent knock. Water in power end, crankcase. Drain. Refill with clean oil. Worn or noisy gear. Replace. Worn or loose main bearing, crank pin Adjust or replace. bearing, wrist pin bushing, plunger, Add oil to proper level.
TROUBLE LOCATION AND REMEDY Trouble Possible Cause Remedy Excessive heat in power end. Pump operating backward. Correct rotation. (Above 180ºF) Insufficient oil in power end. Fill to proper level. Excessive oil in power end. Drain to proper level. Incorrect oil viscosity. Fill with correct oil.
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Crankshaft Assembly 4-1/2" Stroke; Right-Hand and Left-Hand Drive; Right-Hand Shown MA-155M-HD, SC-230 MA-155M-HD, SC-230 Item Quantity Description Part Number Item Quantity Description Part Number Crankshaft Assembly (includes items 1 & 2) PE293K Shim Set 7502-0237-00A Crankshaft 7201-0725-00D Oil Seal, Drive Side 145-458558-999 Drive Key 146-100700-236...
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Fluid End Assembly MA-155L, RO-261 Item Quantity Description Part Number Valve Cover 7201-0088-00C Valve Cover Seal 7201-0008-00A 3/4" Hex Hd. Pipe Plug, S.S. 170-034002-405 Liquid End, Nickel Aluminum Bronze 7201-0080-00E 1-1/4" x 5-7/8" Stuffing Box Stud 7507-2738-00A 3/4" x 3-1/2" Stud, Discharge Flange 7507-2735-00A 1-1/4"...
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Fluid End Assembly SC-230 Item Quantity Description Part Number Fluid End, Steel Consult Factory Valve & Cylinder Cover 7201-0575-00B Valve & Cylinder Cover Seal 7201-0008-00A 1-1/4" x 5-7/8" Stud, Stuffing Box 7507-2738-00A 1-1/4" x 4" Stud, Valve Cover 7507-2737-00A 1-1/4"-8 Thrd., Nut, Hvy. Hex 141-114008-243 1/2"...
(f) if unit is used for purposes other than for what it is designed and manufactured; (g) to any unit that has been repaired or altered by anyone other than Pentair Myers or an authorized Pentair Myers service provider;...