INSTALLATION MANUAL
Contents
1. 12 After the completion of the reassembly of the pump head mount the pipings Casing cover 19 ve B Overhauling Procedures of Pump Head O ring Seal Type Before proceeding to the reassembly refer to the Structural Drawing of O ring seal for JO 2 to 125 Page 13 1 When reassembling the pump head prepare the following items l Rubber mat or some other soft floorcloth 2 Plastic hammer 3 Spanner wrench dedicated to the rotor lock nut standard accessory 4 Hexagonbar spanner wrench for casing fixing bolt standard accessory 5 Antirotation bar standard accessory 6 Food or pharmaceuticals that can be used as lubricant All the parts to be reassembled shall be fully washed and put on the mat in good order so that they may not be damaged Check if they suffer any such defects that will interfere with the operation If any defects are found out remove them 2 Mount the rotor O ring to the furthest Fig 1 1 Body depth of the spline of the shaft of the body as shown Fig 1 14 aft spline 3 Insert the collar for O ring seal into the Collar for O ring seal casing as shown in Figs 1 15 and 1 16 in accordance with the following procedures Incorporate the O ring into the O ring groo2. amp 00000 ES 06900006060 00009 9 No NAME NAME 0 TYIMATERIAL LIGEAR CASE EARCOVER PACKING 1 NON ASBEST 2 GEAR COVER CASING CASING COVER CAP BOLT 520 ROTOR AKAMURA META SHAFT LONG SUS329II NOTE 1 BIS 8 SUS 304 SHAFT SHORT 1 80532971 NOTE 1 LOCK WASHER 2 HELICAL GEAR iset s45C BEARING NUT 2 PLATE 2 505 304 SET SCREW 2 SHAFT COLLAR 2 545 EYE BOLT 1 SPACER 2 S45C IGEARCOVER BOLT 6 CAP NUT 2 SUS 316 CAP BOLT 2 WASHER 2 SUS 316 COLLAR FOR O RINGSEAL 2 STUD BOLT 8 505 304 SLEEVE 2 BEARING RETAINER 2 545 BASE i 200 LEVELGAGE O RING 1 MECHANICAL SEAL 2 KNOCK PIN 2 805 304 PLUG O RING 1 KNOCK PIN 2 805 304 NUT O RING 2 NUT 8 SCS 13 ROTOR O RING 2 KEY 2 SS 400 CASINGCOVER O RING 1 GEARCOVER KNOCK PIN 2 85 SLEEVE O RING 2 GREASE NIPPLE 4 BSBM CASING O RING 2 LEVEL 2 POLYCARBONNET COLLAR O RING 2 OIL PLUG 2 PLUSTIC RETAINER O RING 2 BEARING 2 50 2 POLY 1 POLYETHYLENE BEARING 2 suj2 PACKING 2 NON ASBEST OIL SEAL 2 59 KEY 1 SS 400 OIL SEAL 2 NBR 60 ROTOR O RING TYPE 2 NAKAMURA METAL SEAL 1 1 sus 304 2 6 1 sus 304 NOTE TYPE 1 SUS 316 FOR JM25 8 8 STRUCTURE OF JM O 160 200 TYPE QOS 96269 0197 POMS 63 3 3X3 00 69 GD ED 09 n N 69 8
3. SHAFT LONG SUS 316 BEARING NUT SS 400 BOLT SUS 304 SHAFT SHORT SUS 316 LOCK WASHER SS 400 HELICAL GEAR 545 BEARING NUT SS 400 PLATE SUS 304 RING 580 SHAFT COLLAR S45C EYE BOLT SS 400 SPACER 545 GEARCOVER BOLT 520 CAP NUT SUS 316 CAP BOLT SUS 304 WASHER SUS 316 COLLAR fo oo Joe joo feo feo 546 STUD BOLT 505 304 OIL SEAL NBR BEARING RETAINER 5456 MECHASEAL RETAINER 545 MECHANICAL SEAL CARD KNOCK PIN SUS 304 IC NON ASBEST KNOCK PIN SUS 304 DRAINBOLT PACKING NUT O RING w ro Joo VITON NUT SCS 13 ROTOR O RING g VITON KEY oo fos 55 400 CASINGCOVER O RING VITON GREASE NIPPLE BS BM OIL LEVEL GAGE POLYCARBONNET OIL PLUG PLUSTIC RETAINER O RING 2 NBR BEARING SUJ2 BEARING SUJ2 PLUG PACKING NON ASBEST OIL SEAL NBR KEY SS 400 OIL SEAL fos foo jos os fos NBR RETAINER BOLT 1 1 8 sus 304 1 OIL SEAL NBR FLONT SPACER SUS 304 10 10 MECHANICALSEAL OF JM 2 4 10 16 TYPE CASINGCOVER O RING CASING COVER MATERIAL CAP NUT VITON Gre
4. SHAFT SHORT k oo Jr 505 316 LOCK WASHER HELICAL GEAR 545C BEARING NUT PLATE SUS 304 SET_SCREW SHAFT COLLAR 545 EYE BOLT SPACER 5456 GEARCOVER BOLT NUT SUS 316 CAP BOLT WASHER SUS 316 STUD BOLT SUS 304 COLLAR FOR O RINGSEAL SLEEVE w fos jas Joo oo feo Joo SUS 316 BEARING RETAINER 545 BASE je eo hs e eo eo FC 200 LEVELGAGE O RING MECHANICAL SEAL NBR ON amp CERAMIC SUS 304 PLUG O RING NBR KNOCK PIN KNOCK PIN SUS 304 NUT O RING VITON BUTTERFLY NUT SCS 13 ROTOR O RING VITON KEY SS 400 CASINGCOVER O RING VITON GEARCOVER KNOCK BS SLEEVE O RING VITON GREASE NIPPLE BSBM CASING O RING VITON OIL LEVEL GAGE POLYCARBONNET COLLAR O RING VITON OIL PLUG PLUSTIC RETAINER O RING NBR BEARING SUJ2 POLY CAP POLYETHYLENE BEARING SUJ2 DRAINBOLT PACKING NON ASBEST OIL SEAL KEY SS 400 OIL SEAL ROTOR O RING TYPE NAKAMURA METAL OIL SEAL SUS 304 PLUG lo fmt bo e foo foo ps Ju es fev oo fos Jos fi to to fos feo to oo fr eo 505 304 7 STRUCTURE OF JM O 25 40 55 125 TYPE TI Pty A EL 5 2 69 69696262 X De9 6 069 G9
5. JM O SERIES INSTALLATION MANUAL OPERATION AND MAINTENANCE Keep this Manual at hand so that you can read it any time Read it thoroughly and have a proper understanding of it before you use the product Nnaxaxin SAFETY PRECAUTIONS ena 4 product correctly If the warnings notices ana or attentions in this Manuals are not observed material TES and injuries even death may occur NEVER FAIL TO OBSERVE THESE SAFETY PRECAUTIONS LABELING xx The degree of the dangers risks and or damages are described with the following labeling WARNING presumes death or henny injury AN WARNING when disregarded A IMPORTANT assumes injury or material IMPORTANT damage when disregarded Icons XDifferent Precautions are classified by icons This icon means your due attention should be drawn to what follows This icon indicates part actions that are prohibited What follow this icon or what are NV described in the vicinity of this icon are forbidden This icon means that some actions are mandatory what follows this symbol should be executed without fail xKeep this reference at hand so as to refer to them any time Thank you very much for selecting NAKAKIN s Rotary Pump Nakakin Rotary Pumps have been designed manufactured and inspected carefully to assure maximum safety Please note that these pumps are highly mechanical precise machine Make sure to thoroughly read this Manual bef
6. Vented packing Piston Casing cover O ring fe side Suction side X 18 SINGLE VANED ROTOR CAUTION No 20 Too high a rotation number is likely to break the solids It is therefore recom mended that the rotor be used under 100 rpm or less though it will depend on the size of the solids A Principle of Single Vaned Rotor Two rotors shaped as shown in Fig 1 27 rotate smoothly by the timing gear The pump Rotor locking box nut Casing therefore can convey even be S liquids with some solids mingled 2 while keeping solids breakage to a minimum The pump is ideal for any liquids mingled with items such as gizzards strawberries cherries frozen vegetables mashed beanpaste etc The two vaned rotor and single vaned rotor are interchan geable le vaned rotor Casing fixing bolt 24 7 18 MAINTENANCE AND INSPECTION __ CAUTION No 21 Should any anomaly be found after the inspection of pump remove the anomaly and its cause as soon as possible When repairing any contact defect or indentation use a smooth cut file sand paper and such Never fail to finish with the burs completely removed Extreme care should be given to the fact that too much cutting will lead to too wide a clearance which in turn may cause severe malfunction If you have any doubts or unclear points do not hesitate to contact us N CAUTION No 22 Keep at hand any expendable
7. 4 COLLAR FOR O RINGSEAL 2 SUS 316 4 sTUD BOLT 4 505 304 b SLEEVE 2 SUS 316 BEARING RETAINER 2 S45C 46 6 BASE 1 200 47 LEVELGAGE O RING 1 NBR 7 48 SEAL 2 CARBON amp CERAMIC 8 KNOCK PIN 2 sus 304 49 PLUG O RING i NBR 19 KNOCK PIN 2 505 304 5 0 NUT O RING 2 VITON 0 BUTTERFLY NUT 4 SCS 13 5 1 ROTOR O RING 2 VITON 21 KEY la ss 400 5 2 casiNGcovEr O RING 1 VITON 2 2 GEAR COVER KNOCK PIN 2 BS 5 ISLEEVE O RING 2 VITON 23 GREASE NIPPLE 4 BSBM CASING O RING 2 VITON 24 OIL LEVEL GAGE 2 POLYCARBONNET 9 5 COLLAR O RING 2 VITON 25101 PLUG 2 PLUSTIC 56 ER O RING 2 NBR 26 BEARING 2 50 2 57 8 POLYETHYLENE 27 BEARING 2 suj2 5 8 DRAINBOLT PACKING 2 NON ASBEST 2 81011 SEAL 2 NBR 5 9 KEY 1 SS 400 2 91011 SEAL 2 NBR 6 0 o RING TYPE 2 NAKAMURA METAL 30 011 SEAL 1 NBR BUSH 1 808 304 3ilPLUG 2 88 400 BUSH 1 505 304 6 STRUCTURE OF JM O 10 16 TYPE 2 62 C969 60600002 69 6069 G9 6X9 G9 5 E OO 90 5 2 2 6 0000 9 E AA Ju 8 p x lt g Q TYIMATERIAL amp 00000 MATERIAL GEAR CASE FC 200 GEARCOVER PACKING NON ASBEST GEAR COVER FC 200 DRAIN PLUG CASING SUS 316 CASING COVER CAP BOLT ROTOR SUS 316 SHAFT LONG SUS 316 BIS
8. CET VITON CARBON SUS316 SHAFT LN NUT O RING ROTOR O RING MECHANICALSEAL OF JM 25 40 55 125 CASINGCOVER O RING CASING COVER NAME MATERIAL CAP NUT O RING VITON rrr MATING RING CERAMIC SHAFT O RING VITON PRIMARY RING IN _ CARBON SUS316 if WASHER SPRING NUT O RING tis EROS LEA is ROTOR O RING 505 316 12 MECHANICALSEAL OF JM 160 200 TYPE O RING CASING COVER NAME MATERIAL CAP_NUT O RING VITON MATING RING CERAMIC O RING VITON PRIMARY RING CARBON SUS316 Fa c le SPRING SUS 316 E is D RR TP oar S 1 MATERIAL O RING 1 MATING RING CERAMIC O RING VITON PRIMARY RING CARBON SUS 316 SPRING SUS 316 14 STRUCTURAL DRAWING OF O RING SEAL FOR JO 2 T0 125 m COLLAR FOR O RING SEAL SUS 316 45 SUS 316 55 CASING COVER O RING FIXED PIN NZD COLLAR O RING VITON ROTOR NAKAMURA FOR O RING METAL 60 NONSE Witter age on CASING COVER O RING CA
9. be directly connected with couplings an exact alignment is required When aligning use straight edge dedicated gages and dial gage Eccentric Angle of deflection End play C Parallel error between two shaft centers Angular error between two shaft centers Displacement in axial direction 3 For V belt or chaining attention should be paid to the following points 1 Set the rotation ratio at 1 4 or less If the ratio is greater than this value the V pulley must take larger load causing damage to the pump 2 Alignment should be conducted accurately Inaccurate alignment may cause Shaft deviation or abnormal vibration resulting in pump damage Use straight edge dedicated gages and dial gage for alignment 3 Tension the V belt accurately Too weak or too tight a tension may cause shaft deviation or abnormal vibration resulting in pump damage TABLE OF RECOMMENDED OIL GREASE FOR ROTARY PUMPS Grease Gear Oil Mitsubishi Oil Standard Specification Diamond Multipurpose Grease No 2 High Temperature Specification Diamond Heat resisting Grease No 2 Standard Specification Diamond Super Gear Lube SP150 High Temperature Specification Diamond Super Gear Lube SP460 Idemitsu Kosan Daphny Coronex No 2 Daphny XCC No 2 Daphny CE Compound 1505 Daphny CE Compound 46 Nippon Oil Multi Knock No 2 Shell Alvania Grease No
10. nut PAGE ESTER Cap nut 9 Fix the rotor with the rotor lock box nut rg 1 11 as shown in Fig 1 11 Note that the tightening direction of the nut is indicated by an arrow marked on the head of the box nut Insert the antirotation bar between the vanes of the rotor so that the rotors will not come in contact with each other as shown in Fig 1 12 Tighten them using the dedicated spanner wrench Draw out the antirotation bar and check that there is about 0 05 to 0 1 mm of level difference on the front side of the casing and the front side of the rotor vane as shown in Fig 1 11 Confirm that the rotor turns smoothly by turning it gently with a spanner wrench Should there be any anomaly repeat the operation under this Step 9 Casing fixing bolt Rotor lock cap nut Casing 10 Mount the cover O ring into the O ring groove of the casing cover as shown in Fig 1 13 Fit it in the casing cover straight along the stud bolts and set it in so it matches the knock pin of the casing ntirotation bar Note that the casing is provided with two 2 knock pins of different thickness that on the drive side thicker Mount the cover after confirming this difference i 6 The casing cannot be mounted in the Casing reverse direction 11 Fasten the casing cover onto the casing using eight 8 wing nuts Tighten them further with the plastic hammer Now the reassembling is completed
11. supplies gear oil grease and the like If your pumps are used in any major line it is desirable that you have spare machine and or spare parts Z CAUTION No 23 It is advised that the following steps be carried out with reference to the maintenance and inspection list N CAUTION No 24 Refer to the Pump Manual before proceeding to execute pump overhauling Note that this pump is a precision machine If you have any doubts or unclear points about the pump please consult us Upon request we will perform inspection repairing and overhauling of the pumps Frequency of Gear Oil Change Initial After one month or 250 hours of operation 5 The 2nd and subsequent oil change Every 6 months or for every 1500 hours of operation Be sure to use gear oil for high temperature during high temperature specification 100 to 150 C For the types of lubricants recommended and their volume refer to the back cover B Grease up Frequency Grease up the pump ev ry 3 months or every 750 hours of operation However the grease up frequency should be once for every month 250 hours for any continuous or high temperature operation Use the grease intended for high temperature under high temperature specifica tions 100 to 150 C For recommended grease please refer to the back cover Note Please be aware of the fact that too much grease may detach the oil seal or cause grease leakage Open the drain port and examine the
12. 15kef cm JM O 40 ro m wj o 0 450 135 JM O 55 JM 0 125 X 0 450 450 270 410 1 5MPa 15kef cn T5kgf om 15kgf cm JM O 180 450 550 1 5MPa 15kgf cm JM 0 200 450 980 1 5MPa 15kgf om JM O 300 450 1 5MPa 15kgf cm Q CAUTION No 5 The table given above may be subject to modifications for improvements without prior notice When using this table please consult us for confirmation 5 STRUCTURE OF JM O 2 4 TYPE O 9 969 26 0606969 6209 9696 565620 69 033 Y 0000090006 60 2 52 E 62639 23 E ey G9 6263 69696369 No NAME MATERIAL No NAME Q TYIMATERIAL GEAR CASE 1 rc 200 2 GEARCOVER PACKING 1 NON ASBEST GEAR COVER 1 200 33 DRAIN PLUG 2 jszoc 3 CASING 1 805 316 3J4 DRAIN BOLT 2 s20C CASING COVER 1 BOLT 4 S20C 5 ROTOR 2 36 6 SHAFT LONG 1 37 815 8 505 304 SHAFT SHORT 1 505 316 38 LOCK WASHER 2 55 400 8 HELICAL GEAR et S45C 39 BEARING NUT 2 55 400 9 PLATE 2 805 304 0 5 SCREW 2 505 304 O SHAFT COLLAR 2 S45C 4 DRAINBOLT PACKING 1 NON ASBEST SPACER 2 845 GEARCOVER BOLT 4 1520C NUT 2 sUS 316 43 BOLT 2 805 304 13 WASHER 2 SUS 316
13. 2 Summer Knock No 2 Shell Dalina Grease No 2 Bon Knock 5 150 Shell Omala Oil 150 Bon Knock SP460 Shell Omala Oit 460 Pump Model Quantity of Oil JIM 2 5 JM 4 50 ce VIM 2 VJM 4 80 JM 10 JM 16 100 ec VJM 10 VJM 16 150 ce JM 25 JM 40 150 ec VJM 25 VJM 40 150 ec JM 55 JM125 250 cc VJM 55 VJM125 400 ec JM160 JM200 360 JM300 2000 cc PAINTING Painting Specification Phthalate paint Painting Color Munsell 7 5 GY 9 2 427 Representative NAKAKIN CO LTD Industrial Precision Machine Dept Headquarter 15 8 2 chome Kasugano Hirakata Osaka 573 0137 Osaka Sales Office TEL8 7 72 818 FAX Tokyo Sales Office Kanda Bldg 6 2 1 chome Kameido Kohtoh ku Tokyo 136 TEL 03 5609 7201 FAX 93 5609 7205 Person in charge Person in charge
14. 909602 69 0 6309091 E 96963630969 Q T GEAR CASE FC 200 GEAR COVER FC 200 CASING SUS 316 CASING COVER SUS 316 ROTOR MATERIAL NON ASBEST DRAIN PLUG DRAIN BOLT LOCK WASHER BEARING NUT PLATE SHAFT COLLAR SPACER CAP NUT SUS 316 WASHER SUS 316 STUD BOLT SUS 304 BEARING RETAINER S45 S30C SS 400 520 SUS 304 SLEEVE SUS 316 COLLAR 545 MECHANICAL SEAL CARBON amp CERAM DRAINBOLT PACKING NON ASBEST NUT O RING VITON 1 ROTOR O RING VITON CASINGCOVER O RING VITON SHAFT O RING VITON CASING O RING VITON KNOCK PIN SUS 304 KNOCK PIN SUS 304 BUTTERFLY NUT SCS 13 KEY 55 400 GREASE NIPPLE BSBM OIL LEVEL GAGE POLYCARBONNET OIL PLUG PLUSTIC BEARING SUJ BEARING 5072 OIL SEAL NBR OIL SEAL NBR OIL SEAL NBR RING SK 5 RETAINER O RING NBR KEY SS 400 ROTOR O RING TYPE NAKAMURA METAL SUS 304 SUS 304 9 GOSOVCONEL 909060360 GHG 60962 N 10 Q 5 No NAME Q TYIMATERIAL NAME GEAR CASE FC 200 GEARCOVER PACKING e x VO MATERIAL NON ASBEST 2 GEAR COVER FC 200 DRAIN PLUG 520 CASING SUS 316 DRAIN BOLT 520 CASING COVER 505 316 LOCK WASHER SS 400 ROTOR
15. EAD WETTED PART 16 HOW TO REASSEMBLE THE PUMP HEAD WETTED PART mnn P 16 A Overhauling Procedures of Pump Head Mechanical Seal Type P 17 18 19 B Overhauling Procedures of Pump Head O ring Seal Type P 20 21 22 17 HANDLING OF THE VENTED COVER 23 A Principle of Vented Cover B How to Use the Vented Cover 18 SINGLE VANED ROTOR ketbhateesssosessesesetossbesesteevveprvereeseernaveseseveeveveeseseeeeen P 24 A Principle of Single vaned Rotor 19 MAINTENANCE AND INSPECTION rr rr rr rr rr rr rr rr P 25 A Frequency of Gear Oil Change Grease up Frequency C Prolonged Shutdown D Pump Inspection Method 20 PRECAUTIONS TO BE TAKEN WHEN INSTALLING 21 PRECAUTIONS TO BE TAKEN WHEN ASSEMBLING THE UNITS CAN 1 IMPORTANT 1 Thoroughly read this Manual and have a full understanding of Nakakin s Rotary Pumps and its auxiliaries accessories before actual use 2 Never fail to periodically maintain and inspect Nakakin s Rotary Pumps Nakakin s rotary pumps being mechanically precise machines they may cause unexpected troubles if they are misused or operated erroneously Any maintenance and or inspection work shall be carried out with reference to 19 MAINTENANCE AND INSPECTION Page 25 3 Should any scratches and or contact damage occur in the wetted parts remove or finish them If left as such the defects will spread and cause damage or failure to the pumps 4 Any piping or tub
16. SING COVER El FIXED PIN 222222222 One COLLAR O RING VITON ROTOR NAKAMURA FOR O RING METAL 1 TO OVERHAUL THE PUMP HEAD WETTED PART f UN 4 Z CAUTION No 6 Make sure to thoroughly read the Safety Inspection Page 4 before proceeding to overhaul the pump head Z CAUTION No 7 Be sure that the pump temperature has lowered down enough before overhauling the pump head 5 A CAUTION No 8 Drain the liquid in the piping and check that there is no liquid left in the pump 0 key CAUTION 9 Make sure that the power supply and motive power Source have been shut off and that the pump has a standstill CAUTION No 10 Never try to forcibly open the pump head using a screwdriver and or a hammer A CAUTION No 11 _ If the rotor cannot be drawn out smoothly use a rotor extraction tool option or pulley extractor Never try to pull it out forcibly with a screwdriver or the like If the rotor or casing is damaged by hitting unexpected accident or damaged parts may result CAUTION 12 Never try to disintegrate the housing side except for overhauling When overhauling thoroughly read the Pump Manual in advance If you have any doubts or unclear points do not hesitate to consult us CAUTION No 13 Handle the mechanical seal with care because they ar
17. e piping 17 HANDLING OF THE VENTED COVER CAUTION 19 A Before using the vented cover consult us regarding your liquid pressure and other factors Notice that no adjustment is possible in case when the set pressure of the vented cover is too low Please be aware that the structure of the vented cover depends upon the pump model Principle of Vented Cover The vented packing is subject to the discharge pressure from bypass A If the discharge pressure surpasses the packing holding force of the discharge pressure the vented packing will open up and the liquid will flow from the bypass A to the bypass B thus reducing or annihilating the discharge quantity Thus mounting the vented cover onto the pump allows us to use the following functions 1 Relief valve 2 Flow control valve How to Use the Vented Cover The vented packing is pressed down by a piston Fig 1 2 2 as shown in Figs 1 24 25 and 26 The piston in its turn is held down by the adjusting bolt through a spring The spring force varies according to the degree of tightening of the adjustment bolt Therefore the vented cover has been designed so that the pressure of the vented packing can be regulated by adjusting the bolThe adjustment bolt tightens when turned clock wise and loosens when turned counter clock wise However since the relief amount differs according to the viscosity of the fluid disc
18. e susceptible to breakage or damage 4 POS a Y 14 A Overhauling Procedures of Pump Head 1 Prepare the following items when overhauling the pump head Rubber mat or some other soft floorcloth 2 Plastic hammer 3 Spanner wrench dedicated to the rotor lock nut standard accessory 4 Hexagonbar spanner wrench for casing fixing bolt standard accessory 5 Antirotation bar standard accessory Place the dismantled parts on the mat so that they may not be damaged 2 Never fail to disjoin the piping on the discharge and suction sides of the pump before proceeding to overhaul the pump head 3 Loosen eight butterfly nuts with the plastic hammer Then turn and remove them with hand 4 Disconnect the casing cover from the knock pin with the plastic hammer Following the stud bolt pull the cover straight out Casing fixing bolt 5 Insert the antirotation bar between the rotor vanes as shown in Fig 1 1 Loosen and disjoin the cap nut using the dedicated spanner wrench The tightening direction is indicated by an arrow marked on the surface of the nut Make sure to loosen in the direction opposite to the arrow indication Casing 6 Draw out the rotor straight along the spline of the shaft As shown in Fig 1 2 the primary ring side of the mechanical seal can be detached along with the rotor Notice that damaged or notched seal surface may cause liquid leakage only for coil hooking t
19. ever try to hit the former into the latter Mounting the rotor forcibly will cause galling and the rotor will be stuck in the shaft Su 16 7 A Overhauling Procedures of Pump Head Mechanical Seal Type 1 Prepare the following items when overhauling the pump head l Rubber mat or some other soft floorcloth 2 Plastic hammer 3 Spanner wrench dedicated to the rotor lock nut standard accessory 4 Hexagonbar spanner wrench for casing fixing bolt standard accessory 5 Antirotation bar standard accessory 6 Food or pharmaceuticals that can be used as lubricant All the parts to be reassembled shall be fully washed and put on the mat in good order so that they may not be damaged Check if they suffer any such defects that will interfere with the operation If any defects are found out remove them 2 Mount the shaft O ring into the furthest depth of the spline 3 Insert the mating ring of mechanical seal in the casing according to the following procedure Incorporate the O ring into the mating ring and apply suitable lubricant onto the O ring However for pumps JM16 and younger push the O ring into the O ring groove of the casing as shown in Fig 1 4 Push in the mating ring using the plastic hammer and the like so that the sealing surface is not damaged At that time incorporate the mating ring So that the fixed pin of the casing fits in to the concave portion of the mati
20. f their parts If any contact damages occur in the rotor and the like immediately repair and or correction the damage If any process may produce a pressure exceeding the rated pressure protect the pumps by attaching a relief valve or safety valve E Pressure Specification Note that the specified pressure which has been selected based on the individual specification of the pumps is less than the rated pressure O CAUTION No 2 Never use any pump beyond its specified pressure Extreme caution should be taken to the fact that if any pressure higher than the specified one is applied while operating the pump the motor will run short of its motive power Care and attention should be paid to the fact that insufficient motive force may damage motors speed change gears and the like F Allowable Rotation Number Allowable rotation speed has been pre determined for each pumps refer to Page 5 However the actual rotation number may depend on the specifications and or nature of the liquid conveyed In such case please consult us for further information Note that the allowable rotation speed may fall below 100 rpm or less if any solids mingle with the liquid Q CAUTION No 3 Never try to use the pumps beyond their allowable rotation speed Any running of pumps beyond their respective allowable rotation speed may cause the deflection of bearing cavitation and other inconveniences thereby causing the rotor to contact t
21. harge pressure 5 Casing cover and the rotational speed of the pump an exact O ring frrischarge sie regulation requires the following adjustments while Suction side the pump is under operation in the actual line 1 Loosen the adjustment bolt until the spring force riy 1 25 disappears 2 Operate the pump and gradually close the valve on the discharge side to reach the set pressure while watching the pressure gage on the discharge side With the adjustment bolt loosened the values will fall below the setting However should the valve exceed the setting discontinue the operation The reason for the high valve can be traced to too low a setting or too high a viscosity Please consultus first in such case 3 Tighten the adjustment bolt while watching 4 the pressure gage until the pressure reaches 0 ring the set pressure 4 When the pressure reaches the setting lock the adjustment bolt with a lock nut 5 Open the valve on the discharge side and bring the pump to a standstill Now all the adjustments are completed Adjustment bolt Guide bush Models 55 and 125 Adjustment bolt Lock nut Cap nut Spring guide Guide bush Spring Discharge side X Suction side e Fig 1 26 Models BJM 160 and 200 Adjustment bolt aS 7 iF NAN Guide bush 0 hi D E Y 77771 S
22. he casing or casing cover Since such contact will cause galling which may damage the parts or cause pump failure immediately repair or correct the damage if any rotor or the like suffers such contact damage Notice that the allowable rotation speed may depend on the viscosity and other properties of the liquid When you change the liquid or other important factors consult us for confirmation G Rated Temperature The rated temperature of standard pumps is max 95 C The rated temperature for HT high temperature specification max 150 C CAUTION No 4 Never use the pumps in any manner whatsoever beyond their rated temperature If the process liquid temperature exceeds the rated temperature or if the pump is run under abrupt temperature change the rotor may come into contact with the casing or casing cover Since such contact will cause galling which may damage the parts or cause pump failure immediately repair or correction the damage if any rotor or the like suffers such contact damage 4 PUMP SPECIFICATIONS Model of Pump Piping Bore Sanitary Max Number of Rotation rpm Max Discharge L min Discharge L rev Max Discharge Pressure JM O 800 8 0 010 JM O 4 Qo 800 20 0 025 JM O 10 to 800 40 1 5MPa 15kef cm JM O 16 o 600 60 1 5MPa 15kgf cm JM O 25 0 450 100 1 5MPa
23. ing to be connected with the pumps shall be completely washed to remove any foreign matter and or dirt dust Foreign matter and or dirt generated during piping work may penetrate into the pumps and cause damage and or troubles to the pumps 5 Never try to do the shut off operation on both the suction side and discharge side When the pump is operated with the two ends shut the in pump pressure will rise abnormally 6 Do not try idling the pumps Idling may heat and consequently damage the seal It will not only Miner the service life of the seal but it may cause damages and troubles to the pump itself However please consult us if cannot be avoided 7 Always observe the instructions given on the WARNING label of the pump Never peel off the WARNING label attached to the pump If the label is worn out replace it with a new one 8 Extreme caution must be taken not to be in the direct vicinity of any turning bodies while the pump is running 9 Never touch the pump body when the temperature of the liquid is high since the temperature of the pump becomes high 10 Never run the pump beyond the rotation number pressure and or temperature as prescribed in the specifications If you must use the pump beyond such limits or sheer necessity never fail to contact us for confirmation of safety 11 Never use the pump under any abnormal conditions If any anomaly is found remove the cause of such abnormality immediately 12 If there i
24. n the liquid remaining in the piping and make sure there be no liquid or pressure left in the pump 4 Check that the temperature of the pump and piping has lowered down to the degree that would not cause any burns CAN 3 CONFIRMATION OF PUMP MODELS AND SPECIFICATIONS A Manufacturer s Serial Number Nakakin s Sanitary Rotary Pumps have each the name plates with their manufacturer s serial numbers stamped Casings and casing covers have their numbers stamped on their surface too Any inquiry or parts order shall indicate these numbers B Pump Models There are eleven 11 types of J series pumps 2 to 300 Other pump series are RM RO RMU RXU and HPM C Piping Bore The pipe bore for each pump is stamped on the respective name plates D Rated Pressure The rated pressure for each pump is stamped on the respective name plates The rated pressures are based on the technical calculations and test results The individual rated pressures have been checked independently at the time of delivery Note that these rated pressures are valid only when the number of rotation is within the allowable maximum rotational number C CAUTION No 1 Never run the pumps beyond their respective rated pressure Should any pressure highly than the rated one be applied while the pump is running the rotor may come into contact with the casing or casing cover Such contact may cause galling that may lead to pump failure and or damages o
25. ng ring as shown in Figs 1 4 and 1 5 Confirm from the reverse side that the rotor O ring has been securely mounted 2222 ring Models JM 25 to 200 4 Mount the casing onto the body as shown in Fig 1 6 Note that the casing should be mounted in a particular position Mount it after confirming that two knock pins of different thickness are provided that of drive side is thicker The casing cannot be mounted in the reverse position Knock 5 6 7 8 Fasten the casing onto the housing with the casing fixing bolts as shown in Fig 1 7 Apply appropriate lubricant onto the O ring on the primary ring side of the mechanical seal Then mount the primary ring side onto the rotor as shown in Fig 1 8 Assemble them so that the rotating pin of the rotor fits into the concave portion of the primary ring as shown in Insert the rotor into the shaft straight along the spline of the shaft Notice that the spline is wider only at one point as shown in Fig 1 9 Therefore insert the rotor after confirming the position of the spline and matching the rotor with the shaft spline Mount the nut O ring into the O ring groove of the rotor lock box nut as shown in Fig 1 10 and then fit the spring washer into the nut O ring 1 18 Fig 1 7 Casing fixing bolt Casing Fig 1 8 primary ring Rotating pin Wider spline Fig 1 10 N Spri h Rotor lock box
26. ore the use handling and or maintenance inspection of the pumps Any misuse or erroneous operation handling may cause unexpected troubles and or accidents Keep this Manual at hand Any change to the specifications of your pump system should be communicated to our personnel in charge of sales for confirmation CONTENTS 1 IMPORTANT 2 INSPECTIONS A Inspection before Starting the Pump B Inspection after Stopping the Pump 3 CONFIRMATION OF PUMP MODELS AND SPECIFICATIONS A Manufacturer s Serial Number Pump Models C Piping Bore D Rated Pressure E Pressure Specification F Allowable Rotation Number G Rated Temperature 4 PUMP SPECIFICATIONS 5 5 STRUCTURAL DRAWING OF O 2 AND 4 P 6 6 STRUCTURAL DRAWING OF JM O 10 AND 16 7 7 STRUCTURAL DRAWING OF JM 25 40 55 AND 125 8 STRUCTURAL DRAWING OF 160 AND 200 9 STRUCTURAL DRAWING OF JM 300 10 STRUCTURAL DRAWING OF THE MECHANICAL SEAL FOR JM O 2 4 10 AND 16 Clutch type eemmmemnm enm P 11 11 STRUCTURAL DRAWING OF THE MECHANICAL SEAL FOR JM 25 40 55 and 125 Clutch type 11 12 STRUCTURAL DRAWING OF THE MECHANICAL SEAL FOR N ES PER P 12 13 STRUCTURAL DRAWING OF THE MECHANICAL SEAL FOR 14 STRUCTURAL DRAWING OF THE 0 RING SEAL FOR JO 2 to 125 15 HOW TO OVERHAUL THE PUMP H
27. s any problem in use or in parts do not hesitate to consult us A 2 NSPECTIONS A Inspection before Starting the Pump 1 Make sure that the electric wires have been connected correctly and that the voltage is within the specified values for the motor 2 To avoid the risk of leak connect the ground without fail We recommend attaching an earth leakage breaker 3 Confirm that the couplings and V pulleys for the pumps and speed change gears are properly connected 4 Confirm that the rotational direction of the pump coincides with that of the motor 5 Confirm the appropriate oil levels of the pump speed change gear and the like 6 Remove from the operation area any and all materials tools and others that may cause any personal injury or damages to pumps 7 Be sure that the pumps are ready for operation with all the piping duly secured 8 Make sure that there is a liquid on the suction side of the pump and that the liquid can flow into the pump when it begins to run 9 Check that all the indicating lamps valves pressure gages and any other safety devices and or indicators can function normally B Inspection after Stopping the Pump 1 Check that the pump comes to a standstill with the power air source and hydraulic oil shut off 2 Make sure that all the valves of the process line and valves of bypass line nearest to the suction and discharge openings in the pump have been completely shut off 3 Drai
28. ve of the collar for O ring seal and apply them with suitable lubricant However for pumps JO16 and younger put the O ring into the O ring groove of the casing as shown in Fig 1 15 Push in the O ring seal collar using the plastic hammer Incorporate them so that the fixed pin of the casing fits into the concave portion of the back of the collar as shown in Figs 1 15 and 1 16 Make sure to confirm from the reverse side that the items are securely fastened 4 Set the casing O ring on the collar and apply adequate lubricant 5 Mount the casing onto the body and fasten it with the casing fixing bolts Model KO 25 to 125 20 6 Set the Sleeve O ring on the sleeve and mount them onto the rotor boss Match the rotating pin of the rotor with the slot of the sleeve as shown in Fig 1 17 Sleeve 7 Insert the rotor into the shaft straight along the spline of the shaft Wider Notice that the spline is wider only at spline one point as shown in Fig 1 18 Insert the rotor after confirming the position of the spline and matching the rotor with the shaft spline 8 Mount the nut O ring into the O ring groove of the rotor lock cap nut as shown in Fig 1 19 and then fit the spring washer into the nut O ring Rotor lock cap nut Spring washer 9 Fix the rotor with the rotor lock box nut as shown in Fig 1 20 Note that the tightening direction of the nut is indicated b
29. volume of grease 25 20 PRECAUTIONS TO BE TAKEN WHEN INSTALLING AM CAUTION No 25 When installing the pump ensure a space where maintenance and inspection can be performed without difficulty A Installation Location l Instal the pump in a location where the suction pipe can be kept as short as possible i 2 Install the pump at a location where the suction pipe can be kept as straight as possible 3 Do not install the pump at a location lower than the suction tank 4 Install the pump as horizontally as possible 5 Ensure that a space for pump maintenance is secured 6 For large sized pumps provide a crane or hoist at a position where the maintenance of the pump can be performed 7 Yf the pumps are provided with casters firmly fix the pump with stoppers B Piping 1 The suction pipe shall be as large in diameter as short and as straight as possible 2 Make an exact leveling of the piping and pump so that no excessive load should be imposed on the pump 21 PRECAUTIONS TO BE TAKEN WHEN REASSEMBLING THE UNITS CAUTION No 26 Never try to hit or strike the drive shaft of the pump nor give it any impact load Any such action may damage the shaft bearings mechanical seal and the like 1 The base shall be common thick base that is reinforced so as to endure vibration and load Any large sized pumps shall be installed on a rigid foundation with anchor bolts 2 If for example the pumps are to
30. y an arrow marked on the head of the box nut Insert the antirotation bar between the vanes of the rotor so that the rotors will not come in contact with each other as shown in Fig 1 20 Tighten them using the dedicated spanner wrench Draw out the antirotation bar and check that there is about 0 05 to 0 1 mm of level difference on the front side of the casing and the front side of the rotor vane as shown in Fig 1 21 Confirm that Fis 1 21 Rotor fixing cap nut the rotor turns smoothly by turning it gently with spanner wrench Should there be any anomaly repeat the operation under this Step Fig 1 20 Rotor lock cap nut SS 247 Antirotation bar 10 Mount the cover O ring into the O ring 4 Fig 1 22 Hole for groove of the casing cover as shown in Fig 1 22 Fit it in the casing cover Casing cover straight along the stud bolts and set it O ring in to match the knock pin of the casing Note that the casing is provided with two knock pins of different thickness that on the drive side is thicker Mount the cover after confirming this difference The casing cannot be mounted in the reverse position Casing cover 11 Fasten the casing cover onto the casing using eight wing nuts as shown in Fig 1 23 Tighten them further with the plastic hammer Now the reassembly is completed Wing nut 12 After the completion of the reassembly of the pump head mount th
31. ype Primary ring Rotating pin 7 Loosen and detach the two casing fixing bolts using the dedicated hexagonbar spanner wrench Refer to Fig 1 1 8 As shown in Fig 1 3 pull out the casing Fig 1 3 from the pump head following the stud Casing bolt Now the overhauling of the wetted part is completed Notice that the mechanical seal remaining in the casing should not fall out When placing the mechanical seal put it with its sealing face up Otherwise the seal face may be damaged causing liquid leakage 16 HOW TO REASSEMBLE THE PUMP HEAD WETTED PART Q CAUTION No 14 Before proceeding to reassemble the pump head check that the power supply is shut off and that the pump is at a standstill G CAUTION 15 When inserting the mating ring into the casing never try to hit the former into the latter Beware that hitting will notch or break the mating ring which will cause liquid leakage Q CAUTION No 16 Never try to apply any lubricant on the sealing face of the mechanical seal If applied the lubricant will cause liquid leakage CAUTION No 17 When inserting the rotor with mechanical seal into the shaft care should be taken not to let the tip of the mechanical seal come into contact with the shaft Such contact will damage or notch the mechanical seal which in turn will cause liquid leakage Q CAUTION No 18 When inserting the rotor into the shaft n
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