moyno Version 3, Service Manual

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Page 2: ...MOYNO 2000 Pumps G2 Open Throat Models G3 Bridge Breaker Models Version 3 Models SERVICE MANUAL ...

Page 3: ... Rotor 8 4 31 Stator 8 4 32 All Other Parts 8 4 33 ASSEMBLY OF G2 OPEN THROAT PUMP 8 4 34 Lubrication During Assembly 8 4 35 Packing Installation 8 4 36 Bearing Housing Suction Housing Assembly 9 4 37 Bearing Drive Shaft Assembly 9 4 38 Rotor Stator Assembly 9 4 39 Rotor Gear Joint and Conveyor Assembly 10 4 40 Drive End Gear Joint Assembly 11 4 41 Stator Support Discharge Assembly 11 4 42 Final A...

Page 4: ...ation The direction of rotation is indicated by a rotation arrow on the nameplate Rotation of Moyno 2000 G2 G3 pumps is always clockwise when viewed from the driven end of the pump 1 5 Model Number The pump model number consists of three component parts Frame Designations Type Designa tions and a Trim Code A typical model number for example might be 2G065G2 CDQ AAA as shown on the nameplate in fig...

Page 5: ...difying pumps to meet specialized pumping conditions If the trim code of your pump is other than AAA contact your nearest Moyno rep resentative for clarification Do not modify your pump with any variation unless you have determined that it is compat ible with your application 2 1 INSTALLATION 2 2 GENERAL Moyno pumps are lubricated and tested at the factory prior to shipment and require minimum pre...

Page 6: ...uffing box should be throttled slightly to maintain 10 15 PSI higher pressure in the stuffing box than is present in the suction housing See fig 2 2 Flow rate should be approximately 1 2 2 gpm If mechanical seals are to be used on the unit consult the seal manufacturers instructions for seal flush requirements 3 1 OPERATION 3 2 INITIAL CHECK Before putting the pump into operation the following ite...

Page 7: ...the main elements are very accessible and require few tools to disassemble 4 3 PACKING ADJUSTMENT Pumps Packing gland nuts should be evenly adjusted so they are little more than finger tight See fig 4 1 Over tightening of the packing gland may result in premature packing failure and possible damage to the shaft and gland When packing is new frequent minor adjustments during the first few hours of ...

Page 8: ...ump preferably with clean water to insure rotor and stator are not dry 2 Shut off pump 3 Close suction and discharge valves 4 Turn off flush water to packing or mechanical seal if used 5 Disconnect power source 6 Drain any fluid in pump 7 Remove inspection plate 17 and gasket 18 Page 5 4 11 Packing Removal 1 Stop pump 2 Complete Section 4 10 steps 2 6 3 Remove gland adjustment nuts E and gland hal...

Page 9: ...ht on conveyor assembly Remove lock nut 28 from end of conveyor assembly 35 Remove ring gear 27 gear ball 29 secondary thrust plate 30 seal support 31 and gear joint seal 32 Then slide gear joint shell 36 from conveyor assembly Note It is recommended that each time a gear joint is dis assembled the O rings and grease seal should be replaced 4 15 Drive Shaft and Bearings Removal 1 Complete sections...

Page 10: ...out of stuffing boxes and paddle assemblies 21 4 Pull paddle assemblies 21 toward discharge end of pump to free from drive shafts 17 and 18 4 22 Drive Assembly Shafts Removal 1 Complete Section 4 17 steps 1 3 2 Complete Section 4 18 steps 1 3 3 Complete Section 4 19 4 Complete Section 4 20 5 Remove bearing cover plate 6 6 Loosen set screws on both flange block bearings 10 Page 7 7 Pull both shafts...

Page 11: ... fig 4 7 The Moyno 2000 pumps are reassembled in the reverse order of dismantling The following suggestions are offered 1 While pump is dismantled check all gaskets seals packing and O rings Replace all worn items It is rec ommended that the gear joint seals 32 gear joint O rings 24 38 and stator O ring 20 be replaced each time either of the gear ioints is disassembled 2 During the assembly proces...

Page 12: ...ld tightly in place and bearings do not turn freely 3 Remove bearing spacer halves 6 Thoroughly pack lubricant around rollers and on bearing races Install one half of bearing spacer Fill area between bearings half full of lu bricant and install other half of bearing spacer Note An alternate method of lubricating bearings is as fol lows Pack the rollers of the first cone immediately af ter it is pr...

Page 13: ...with lip on outside diameter of seal fitting the step on back side of thrust plate 7 Apply a film of grease to splines on inside of gear ball 29 Install gear ball on conveyor assembly 35 with counterbored end end without splines first on conveyor assembly Gear ball should slide freely against shoulder on conveyor assembly Place lock nut 28 on conveyor assembly and tighten against gear ball Apply g...

Page 14: ...n aligned thread hex head screws T and lockwashers thru stator clamp ring 40A stator adapter 21 and into threaded holes in suction hous ing 19 Evenly tighten the screws 8 Slide gear joint retainer 34 into end of gear joint shell 33 being careful that O ring 24 remains in the slot and that gear joint seal 32 is properly seated in position Rotate gear joint retainer 34 until its holes become aligned...

Page 15: ...n idler shaft 14 thru irregular hole in chain cover 5 and thread into idler arm 7 3 Position key L on shaft 17 and slide torque limiter 3 and sprocket 4 onto shaft 17 4 Place drive sprocket 33 on drive shaft of pump with set screws facing away from bearing housing 5 Align torque limiter sprocket 4 idler sprocket 15 and drive sprocket 33 Install chain 9 ensuring that pad dle assemblies remain 90 de...

Page 16: ... White Optional packing on all lines D DOUBLE MECHANICAL SEAL Optional on all lines Not offered on 2 L frame F BRAIDED TEFLON FOOD GRADE PACKING White Standard on all Quick Disassembly pumps Optional on all other lines G 100 GRAPHITE PACKING Gray Optional to all lines H FLUSH PACKING GLAND S SINGLE MECHANICAL SEAL Optional on all lines W WATER FLUSH Optional on all lines X Special to application P...

Page 17: ...Page 14 4 58 STANDARD HARDWARE FOR G2 OPEN THROAT TORQUE GUIDELINES CHART Note Torque values are from the Industrial Fasteners Institute and Craftsman Corp ...

Page 18: ...ator Select G2 Stator part number by number of stages 2G036G2 CDQ AAA and Model Page 18 2G036G2 CDQ AAA Table 4 5 G2 Discharge Flange Select G2 Discharge Flange by Type Designation 2G036G2 CDQ AAA Page 18 number of stages 2G036G2 CDQ AAA and Model 2G036G2 CDQ AAA Table 4 6 G3 Parts List Select G3 part number by Drive End 2G036G3 CDQ AAA and Type Designation Page 20 where listed 2G036G2 CDQ AAA Tab...

Page 19: ...Page 16 4 60 PARTS LIST FOR G2 OPEN THROAT Table 4 1 G2 Parts List ...

Page 20: ...Page 17 FOLD OUT FOR EXPLODED VIEW OF PUMP Notes ...

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Page 22: ...Page 19 Figure 4 7 G2 open throat pump exploded view ...

Page 23: ...Page 20 4 61 STANDARD HARDWARE FOR G3 BRIDGE BREAKER 4 62 PARTS LIST FOR G3 BRIDGE BREAKER Table 4 6 G3 Parts List ...

Page 24: ...Page 21 FOLD OUT FOR EXPLODED VIEW OF PUMP Table 4 7 Shaft Sleeve Arrangement Table 4 8 Shaft Sleeve Conversion Kit Figure 4 8 Stuffing Box Rework Dimensions for Shaft Sleeve Option ...

Page 25: ... 4 7 be machined flat and that two drilled and tapped holes be added for mounting the bridge breaker bearing support This can be done internally or at a local machine shop fol lowing the dimesional data shown in fig 4 9 Alter nately a G3 bearing housing Ref No 34 Section 4 62 may be ordered Figure 4 9 Bearing housing machining to convert G2 to G3 ...

Page 26: ...Page 23 Figure 4 10 G3 bridge breaker exploded view ...

Page 27: ...ft 4 2 Remove two O rings 47 from interior of sleeve 4 66 Assembly Assemble pump to the point where slinger ring 11 is installed on drive shaft 4 then install sleeve kit 46 as follows 1 Lubricate two O rings 47 and insert in grooves in inte rior of sleeve 48 Loosely install four to six set screws 49 in sleeve but be sure they do not protrude into interior of sleeve 2 Install sleeve unit 47 48 49 o...

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Page 29: ...hnology Corp Hastelloy is a trademark of Cabot Corp Monel is a trademark of INCO Alloy Corp Hypalon and Teflon are trademarks of E I DuPont de Nemours and Company Thiokol is a trademark of Morton Thiokol Inc Printed in U S A Moyno Inc is a Unit of Robbins Myers Inc Your Moyno Authorized Service Distributor is ...