User manual CPC Centrifugal pumps
Contents
1. size power KW EE bracket IG IEC 13000 1500 1000 750 L5 m7 m8 m9 m10 m11 m12 m13 m14 80 A 10 75 0 55 0 37 0 18 266 PRR SITES 100 24 135 0 7 50 19j6 40 130 90S 330 90L 2 135 0 330 56 24j6 50 153 90L 4 6 8 355 100L 2 4A 420 100L 4B 440 men 145 0 5 63 28j6 60 172 100L 8B 112M 2 6 8 4 2 l1 384 TUE 7 145 Fc 70 28j6 70 174 1328 2A68 463 182 ieee ZB 20 89 38k6 80 een 501 220 4 6A 8 132M 6B 612 256 55 108 42k6 110 656 300 55 705 121 48k6 110 320 65 133 55m6 110 380 825 225M 2 65 930 55m6 110 2258 4 95 960 345 140 380 225M 4 6 960 149 m 2255 8 95 865 m mS 440 355 225M 8 890 380 1010 60m6 95 22 168 140 446 1040 65m6 965 2808 2 1135 65m6 2808 4 6 1135 75m6 2808 8 1040 280M 2 Sigal 199 Same 0 520 280M 4 6 1135 me 280M 8 1040 30 CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 Sectional drawings and parts lists 8 1 CPC KAM IEC 80 112 EL Li Loes ZZ Ss A 132 N E Cuma ma BR l VA OA MOYA TET A ISSS E ed SUN SS A Fl CH HD AIN D D EN 4 Ns ED AA 6 EN CDD G0 020 0 5 0 UCD W QUOD OW2. Item nr Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Protection cover 11 Intermediate piece 12 Stub shaft 13 Hexagon bolt 14 Washer 15 Hexagon nut 16 Motor 17 Hexagon bolt 18 Profiled strip 19 Hexagon bolt 20 Washer 21 Pump foot 22 Hexagon nut 23 Hexagon bolt 24 Washer 25 Motor shroud 26 Hexagon bolt 27 Washer 32 O ring CE CPC 1204 EN 01 31 8 2 32 CPC KAM IEC 132 250 User manual Pomac CPC pumps Ll ED Q6 D QD N HI Lenn b H Y OY MA G OY KR O CDI QD 6X8 0 6 10 9 C 1D X1 QD OD D C2 Q3 QU Q9 Item nr__ Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Protection cover 11 Intermediate piece 12 Stub shaft 13 Hexagon bolt 14 Washer 15 Hexagon nut 16 Motor 17 Hexagon nut 18 mProfiled strip 19 Hexagon bolt 20 Washer 21 Hexagon bolt 22 Hexagon nut 23 Hexagon bolt 24 Washer 25 Motor shroud 26 Hexagon bolt 27 Washer 28 Flange 32 O ring CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 3 CPC KAC 7 8 9 0 ID 2 B Item nr Description 1 Impeller nut 2 O
3. Item Nr Description 91 Hexagon bolt 92 Washer 93 O ring 94 Fixing ring 95 Mechanical seal with left hand wound spring 96 O ring 97 Flush compartment 98 O ring 99 Shaft sleeve 910 Mechanical seal with right hand wound spring 911 Retaining ring 912 Support ring 913 Seal seat CE CPC 1204 EN 01 9 1 9 2 User manual Pomac CPC pumps Performance curves CPC 1500 min H m 25 20 CPC31044 CPC31055 ines P bal e CPC31066 3 SV 8 CPC26044 CPC26055 3 10 8 CPC26066 CPC26086 e CPC21044 CPC21055 CPC16044 PEIN CPC 16033 0 6 7 8 10 20 30 40 50 60 70 80 100 Q m h CPC 3000 min H m 100 90 80 70 CPC31044 CPC3 60 50 40 30 CPC26044 CPC21044 20 10 CPC16044 30 4 20 CE CPC 1204 EN 01 300 400 500 Q m h 43 9 3 9 4 44 CPC 1800 min H m User manual Pomac CPC pumps 35 30 CPC31044 25 CPC31055 CPC31088 CPC31066 20 CPC26044 CPC26055 SN SNE o O AE ON ZS 15 CPC26066 CPC26088 10 CPC21044 CPC16033 CPC21055 CPC21066 CPC16044 6 7 8 9 10 CPC 3600 min H
4. Item Nr Description 91 Hexagon bolt 92 Washer 94 Seal seat 95 Mechanical seal 96 O ring 8 8 4 Version B11 Internal mechanical seal balanced om eg E Item Nr Description 91 Hexagon bolt 92 Washer 93 Seal seat 95 Mechanical seal 96 O ring 98 O ring 40 CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 8 5 Version Q1 Internal unbalanced mechanical seal with unbalanced quench seal Item Nr Description 91 Hexagon bolt 92 Washer 93 Mechanical seal with left hand wound spring 94 Seal seat 95 Mechanical seal with right hand wound spring 96 O ring 8 8 6 Version Q12 Internal balanced mechanical seal with unbalanced quench seal 93 91 92 94 96 95 98 L d H II Item Nr Description 91 Hexagon bolt 92 Washer 93 Mechanical seal with left hand wound spring 94 Seal seat 95 Mechanical seal 96 O ring 98 O ring CE CPC 1204 EN 01 8 8 7 42 Version F12 User manual Pomac CPC pumps Double mechanical seal back to back unbalanced 935 5899 na EE SL D d A
5. The table on the next page gives a possible cause and solution for the malfunctions mentioned above CE CPC 1204 EN 01 45 User manual Pomac CPC pumps Malfunction Cause Action 1 2 3 5 16 8 9 v v electrical connection Have qualified electrician defective check the electric connections v wrong rotation direction Have qualified electrician reverse the sense of rotation of the electric motor v pump is not completely filled Top up the pump entirely with liquid only for CP with liquid v lv iv v insufficient pre pressure Increase the pre pressure or place the pump on a lower position v v pump operating at the wrong Check the motor speed speed v contaminations or objects in Clean the pump if the pump necessary disassemble Y Iw v air in the piping Inspect the piping v valve in suction pipe is not Entirely open the valve in completely open the suction pipe v pump selected with too Install another pump small delivery head v wv v suction pipe or filter blocked Clean the suction pipe or the filter shaft seal defective Disassemble the pump and replace the shaft seal O ring seal defective Disassemble the pump and replace the O ring seal v liquid temperature is too Decrease the liquid high temperature v Viv impeller is jammed Disassemble the pump and replace the impeller viv viv impeller is damaged Disassemble the pump and replac
6. User manual Pomac CPC pumps 5 5 Malfunction If there is a malfunction in the pump try to find the cause using the troubleshooting list at the back of this manual or consult your installer A Always switch off the current first if you intend to investigate the malfunction yourself Remove the fuse or lock the operating switch with a pad lock A The pump can still be hot or under pressure Allow the pump to cool down first and if possible release the pressure from the pump Always wear the correct personal protection devices goggles gloves etc CE CPC 1204 EN 01 17 User manual Pomac CPC pumps 6 Overhaul and repair 6 1 Removing the pump AA ensure the electric current has been switched off Remove the fuses or switch the operating switch to OFF and lock it with a pad lock the pumped liquid is HOT first allow the pump to cool down 1 2 3 Disconnect the electrical connections to the electric motor For designs Q1 Q12 and F11 disconnect the flushing lines Loosen the connections of the pipes and remove the pump from the piping 6 2 Dismantling and assembling the pump The item numbers shown refer to the illustrations and the parts lists in chapter 7 6 2 1 Dismantling the pump 1 oR WP Loosen the pump cover nuts 9 and remove the pump cover 3 Inspect the pump cover O ring 8 for damage Remove the pump shaft nut 1 and remove the impeller 4 and the O ring 2 Remove the
7. m 20 30 40 50 60 70 8090100 200 30C Q m h 140 130 120 110 CPC31044 100 CPC31055 CPC31066 CPC31088 90 80 70 CPC26044 77 CPC26055 60 CPC26066 50 40 CPC21044 CPC21055 CPC26088 30 Cen CPC16033 1804 CPC21066 20 10 10 CE CPC 1204 EN 01 100 200 300 400 500 Q m h User manual Pomac CPC pumps 10 Trouble shooting A malfunction in a pump system may have various causes The malfunction is not always necessarily in the pump itself but can also be caused by a malfunction in the piping system or in another appendage in the system If the operating conditions differ too greatly from the specifications by which the pump was purchased this can also cause malfunctioning Therefore always check first Has the pump been installed correctly Are the operating conditions still according to the initial specifications e e e Are the other appendages in the pipe system functioning correctly e n general terms the following malfunctions in a pump can be distinguished pump gives no or little liquid pump does not reach duty point pump gives irregular liquid flow pump leaks pump vibrates excessively pump makes too much noise motor overheats pump cuts out thermally pomp has seized oo0 00ROMN
8. 7 1 Dimensions drawings eee eeetce huii haa Nia a a e NE Aaea a aN 26 7 2 Dimensions electric motors KA sees 28 7 9 PUMPAiMEONSION Suicida Id 29 7 4 Dimensions IGH iii aset EE gel 29 Ta Dimensions IG Series dai AE nla eel Ni ee 30 8 Sectional drawings and parts lets sse nr 31 BT GPC KAM IEG 80 112 pdt pd ae Hui teat ipa ee bereit eee 31 8 2 GPG KAM IEG 132 250 tii edd ae ig D Ee Fc Hagae Fee Pee Hcr diede UL da deut 32 8 39 OBPC KAQ icit pip Leda A epee 33 8 4 OPC KAV IEG 80 liinda dela id Fee Ph de die ned vea 34 8 5 GPC KAV EG 132 250 iig EHE Ihn 35 307 OPCs Gin ES 36 8 74 OCP G IGHs putin E 37 8 82 Shaft sealingssar 2 mn oett aie n Een th e in ell tanita 39 8 8 4 E uei ee ene E aia eid ani aati eater deel 39 Re EE 39 9 89 97 Version Bd iere emere A Gals retener tutte alt e Gen 40 8 8 4 Version BT T nete retreat better ee t ene te Run 40 8 8 57 VESIN QT uai eet tremit dine coe ette tnt eden ied 41 8 8 6 Version Q12 ties aetna Mull alee atte ete eoi at Dodd edet unite ed 41 BC Merens metere bett rettet tutte rend ne E 42 9 Berformarice cUtVes a oie e er A eee Pere Fe SERE RR seers 43 E EPG 1500 OI WEE E 43 92 5 OPC 3000 Min EE 43 93 OPC A800 rc tattoo ota 44 A tet iate eit Sce Sia 44 T0 Troubleshooting eiie tanda hinder te innen rnc ited 45 4 CE CPC 1204 EN 01 1 1 1 2 1 3 User manual Pomac CPC pumps Introduction General
9. ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Protection cover 11 Intermediate piece 12 Stub shaft 13 Hexagon bolt 14 Washer 15 Hexagon nut 16 Motor 17 Pedestal 18 Hexagon bolt 19 Washer 32 O ring CE CPC 1204 EN 01 33 8 4 34 User manual Pomac CPC pumps CPC KAV IEC 80 112 mmm a om es ee E o E mm SR NIZA E Nel SSS X SEN Ss SZILI PX A D 2 Q 4 5 OTOOTO 5 Q0 5 Q6 Item nr Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Protection cover 11 Intermediate piece 12 Stub shaft 13 Hexagon bolt 14 Washer 15 Hexagon nut 16 Motor 17 Washer 18 Hexagon bolt 32 O ring CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 5 CPC KAV IEC 132 250 pS d H E KH SA A NSSS m I AS NS CH s 19 XL LOK LX Aum UN EY i SS N JET A ASSN N N S S 27 ED I QD G5 09 Q0 2 WOH Item nr Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Protection cover 11 Intermediate piece 12 Stub shaft 13 Hexagon b
10. sunk key 504 If necessary dismantle the shaft seal If necessary dismantle the stub shaft 6 2 2 Assembling the pump 1 2 3 a If it has been dismantled fit the extension shaft 12 This has to be adjusted before the pump can be further assembled see next paragraph If it has been dismantled fit the shaft seal For an interior seal check that the spring of the seal is positioned firmly against the collar of the shaft sleeve 4 Place the O ring 32 on the shaft 5 6 Place the O ring 2 and fit the pump shaft nut 1 Push the impeller onto the shaft Use a feeler gauge to check that the gap between the impeller and the rear plate is correct If this is not the case readjust the extension shaft See next paragraph 7 18 Place the pump cover O ring 8 Fit the pump cover 3 and tighten the pump cover nuts 9 CE CPC 1204 EN 01 User manual Pomac CPC pumps 6 2 3 Adjusting the extension shaft For versions KAM KAC and KAV before the final assembly the extension shaft first must be adjusted on the motor shaft to set the proper gap between the impeller and the back plate later 1 If dismantled fit the lantern piece 15 and the back plate 6 2 If provided with shaft sealing F11 fit shaft sleeve 23 on the extension shaft Fit the impeller 2 and the pump shaft nut 3 to the extension shaft and fit the extension shaft to the motor shaft 3 Place a feeler gauge of thickness 0 5
11. the medium to be pumped 2 Check that the quench or flush system is set to the correct pressure 3 Switch the pump on briefly A Take care with any unprotected rotating parts 4 Check that the rotation direction of the motor corresponds with the rotation direction of the pump which is indicated by an arrow on the lantern piece If the rotation direction is not correct swap the connection wires L1 and L2 A This must be done by a qualified electrician 5 Fit the guard Putting into operation Check that the quench or flush system is set to the correct pressure Fully open the shut off valve in the suction pipe Close the delivery valve Switch the pump on and allow it to come up to pressure Subsequently open the delivery valve Set the pump to its required operating point OouahWND CE CPC 1204 EN 01 15 5 4 5 4 1 Bomm a 5 4 3 5 4 4 Bomm 16 User manual Pomac CPC pumps In operation Noise The noise data stated in this manual refer to normal usage with an electric motor Under these conditions the noise level measured at a distance of 1 meter and at a height of 1 6 meter is below 85 dB A If after the passage of time the pump produces excessive noise this can be an indication that there is a fault in the pump or elsewhere in the system e g worn out bearings cavitation Daily maintenance Regularly check the pressure of quench or flush supply if the shaft
12. wear protective gloves and safety goggles if the pump conveys harmful liquids Allow the pump to cool down first when it is used for conveying hot liquids 2 5 Changed application e Contact POMAC in case the pump is going to be used for other applications or in different circumstances than those specified during the initial pump selection 10 CE CPC 1204 EN 01 3 1 3 2 3 3 3 4 3 5 CPC User manual Pomac CPC pumps Description CPC centrifugal pump Pump description Stainless steel sanitary centrifugal pump that is used for pumping liquids up to 500 cP For this process a liquid flow with a pre pressure or an underpressure is constantly present on the suction side Certification Pump type CPC is certified in accordance with the EHEDG directives Pump type CPC is ATEX certified Application area The application area goes from a capacity of 300 m h to a manometric head of 9 bars at 3000 rpm 360 m h 13 bar at 3600 rpm Pump impeller design The pumps are provided with an open impeller Type description Depending on the area of application the following types are available e Stainless steel sanitary centrifugal pump designed with tangential outlet and suitable for system pressures up to 16 bars CPC H 3 6 3 7 e Stainless steel sanitary centrifugal pump designed with tangential outlet and suitable for system pressures up to 50 bars Connections All pump types are available wit
13. User manual CPC Centrifugal pumps Pomac Pumps Pomac bv Feithspark 13 9356 BX Tolbert the Netherlands Tel 31 0 594 512877 Fax 31 0 594 517002 info pomacpumps com www pomacpumps com This user manual has been released d d and belongs to CPC Pump serial number capacity m h pressure bar NPSHR m Drive make type speed min voltage AJA V frequency Hz current A power kW isolation class protection class IP area classification Coupling make type size User manual Pomac CPC pumps User manual Pomac CPC pumps This manual has been compiled with the utmost care However POMAC assumes no liability for possible deficiencies of the information in this manual It is the responsibility of the buyer user of this pump to ensure this information is complete and up to date All technical information mentioned in this user manual remains property of Pomac bv and may only be used for the installation operation and maintenance of this pump The information may not be copied duplicated or passed on to third parties without our written permission Copyright 2012 Pomac bv Release date April 2012 Doc ID CE CPC 1204 EN 01 CE CPC 1204 EN 01 1 User manual Pomac CPC pumps DECLARATION OF INCORPORATION according to Annex II 1 B of the Mach
14. al 95 out of the seal seat 93 Mounting 1 If it has been disassembled Place the O ring 96 and refit the seal seat 93 to the back plate 7 with bolts 91 and washers 92 2 Apply some food grade grease to the seal seat 93 and press the static ring of the mechanical seal 95 into the seal seat Ensure the slot in the static seal ring corresponds with the lock pin 3 Fit the back plate 7 to the lantern piece 11 with bolts 6 and washers 5 4 Apply some food grade grease to the extension shaft and push the rotating parts of the mechanical seal 95 onto the shaft 5 For shaft seal B1 line up the rear side of the mechanical seal with the shaft collar and fix the lock screws 6 Fit the impeller and the pump cover CE CPC 1204 EN 01 6 5 6 5 1 6 5 2 Nu User manual Pomac CPC pumps Exterior mechanical seal S12 BA 95 96 97 98 ot dp Figure 3 Mechanical seal S12 Dismounting 1 2 3 4 Dismantle the pump cover the impeller and the back plate 7 Disassemble the back plate 7 Push the static ring of the mechanical seal 98 out of the seal seat 97 Remove the rotating ring of the mechanical seal 98 from the shaft Mounting 1 r If it has been disassembled Fit the set ring of the mechanical seal and adjust it according to figure 3 and the values from t
15. ce 5 malfunction 19 43 Manufacturer 8 User manual Pomac CPC pumps mechanical seal 7 13 non return valve 15 Note 9 occupational health and safety 10 order form 8 Ordering spare parts 8 original POMAC parts 5 O rings 13 oscillation 21 overhaul 9 10 Overhaul 20 pad lock 19 20 parts lists 8 20 29 Performance curves 41 personal protection 19 personnel 9 training 9 piping 11 20 43 44 Precautions 10 pre pressure 11 44 pump 1 5 6 8 9 10 11 12 14 15 16 17 18 19 20 24 assembling 20 dismantling 20 Pump identification 6 qualified electrician 16 17 44 quench 17 Quench 7 13 14 17 radial outlet 11 repair 20 44 rotation direction 17 44 ruler 16 Safety 9 sectional drawing 8 Sectional drawings 29 self priming operation 11 serial number 6 8 shaft seal dismantling 21 fitting 21 Shaft seals 38 shut off valve 17 speed 44 Staff 9 stainless steel shroud 5 12 standard electric motor 24 standards 10 tangential outlet 11 Transport 5 Transport and receipt 5 Trouble shooting 43 turbine 7 type code 6 7 Type indication code 13 type number 8 CE CPC 1204 EN 01 47 type plate 6 underpressure 11 14 visible leakage 18 Warranty 5 48 User manual Pomac CPC pumps water ring pump 12 Whey curd pump 42 whey curds 11 27 ZA 7 12 21 27 35 42 CE CPC 1204 EN 01
16. e also stated on the first page of this manual If the pump type plate is missing please provide us with the following details so that we can establish the correct pump size 8D pers Pump cover Diameter A Depth B A Diameter suction at Diameter discharge q Connection Please state K S H Impeller Diameter D Diameter E Blade width C Impeller type Motor There is a motor type plate on the motor itself 6 CE CPC 1204 EN 01 User manual Pomac CPC pumps 1 5 Type code The type code consists of the following items X X X X X E Xx T X T X 1 2 3 4 5 6 7 8 Example CPC 16044 KAM 2 0750 S1 AG XPS 1 Type CPC 2 Pump size 160 210 260 310 3 Connection sizes 22 33 44 55 66 88 108 1210 4 Construction KAM KAC KAV IG IGH 5 Electric motor poles 2 4 6 6 Power 0 55 0055 7 5 0750 18 5 1850 37 3700 7 Mechanical seal S1 mechanical seal unbalanced internal S2 mechanical seal unbalanced external B1 mechanical seal balanced internal Q1 double mechanical seal with Quench unbalanced Q2 double mechanical seal with Quench 1 side balanced F1 double mechanical seal Back to Back with Flush 8 Connections A DIN 11851 B SMS 1145 C Tri Clamp D DIN 11864 1 E Flanges EN 1092 1 F special co
17. e the impeller viv viv motor shaft is bent Replace the motor viv viv extension shaft is loose Disassemble the pump inspect the extension shaft reassemble it and readjust viv viv bearings are damaged or Replace the motor For worn IG F replace the bearings viv motor is overloaded Check the viscosity of the liquid Switch off the motor and check if the pump does not drag If so disassemble the pump and repair it 46 CE CPC 1204 EN 01 Index 2RS1 17 address data 8 asafdichting 17 20 ATEX 7 11 12 14 axially fixed shaft 24 base plate 13 bearings assembling 24 dismantling 24 C I P 12 callipers 16 cavitation 18 centrifugal pump 11 Changed application 10 Cleaning agents 18 Cleaning procedure 18 Connection sizes 7 Connections 7 12 20 44 Construction 7 12 27 contaminations 44 coupling 16 aligning 6 12 15 16 CP 7 11 12 21 33 41 CP ZA 11 12 21 34 41 CP WW 11 27 Dimensions 25 electric motor 28 Dimensions drawings 25 drain 7 Drive 14 EHEDG directives 11 electric motor 16 18 44 Electric motor poles 7 EN 12756 DIN 24960 13 extension shaft 14 20 21 24 44 flexible coupling 13 flush 17 Flush 7 13 14 17 gap 15 20 21 General information 5 9 guard 17 heating jacket 7 IEC 24 injury 5 9 InLine connections 11 13 Introduction 5 lifting eyes 5 lines 17 20 liquid air mixtures 11 12 maintenance daily 1 5 9 10 18 periodic 18 major for
18. emove both static rings of the mechanical seals 93 and 95 from the seal seats of the seal housing Remove the rotating part of the other mechanical seal 93 from the shaft 6 6 2 Mounting 1 2 3 4 Q1 5 6 7 Q2 8 9 10 11 22 Fit the rotating part of the mechanical seal with the left wound spring 93 onto the shaft the seal face facing the impeller If it has been disassembled Mount the O ring 96 and refit the seal housing 94 to the back plate 7 Apply some food grade grease to the seal seats and push both static rings of the mechanical seals 93 and 95 in the seal seats of the seal housing 94 The static ring belonging to the exterior seal 93 is fitted at motor side Fit the back plate 7 with the seal housing Fit the rotating part of the other mechanical seal 95 onto the shaft Mount the O ring 32 on the shaft Fit the impeller Fit the rotating part of the other mechanical seal 95 onto the shaft Mount the O ring 98 on the seal Mount the O ring 32 on the shaft Fit the impeller Ensure the slot in the static seal ring corresponds with the lock pin CE CPC 1204 EN 01 6 7 6 7 1 6 7 2 User manual Pomac CPC pumps Mechanical seal with flush F11 Figure 7 mechanical seal F11 Dismounting 1 2 3 4 Dismantle the pump cover and the impeller Remove the flush supply l
19. en both coupling halves motor legs Fix the motor Align the coupling according to the following instructions 4 3 Connecting the electric motor A An electric motor may only be connected by a qualified electrician 14 CE CPC 1204 EN 01 5 1 2 5 1 3 5 2 User manual Pomac CPC pumps Putting into operation Precautions General e Check that the shaft can turn freely To do this rotate the pump shaft a few times manually e Check that the fuses have been fitted e Types IG and IGH are designed as standard with grease lubricated ball bearings that are provided with grease for their entire life 2RS1 e f type IG H is designed with oil lubricated bearings the bearing housing should be filled with oil first Quench If provided with quench shaft seals Q1 and Q12 1 Connect the quench lines to the quench space Capacity approx 3 l min The SUPPLY line must be connected to the LOWER port 2 Open the inlet and outlet of these lines 3 Set the required pressure The maximum pressure is 0 2 bar Flush If provided with flush shaft sealing F11 1 Connect the flush lines to the flush space The flushing must have a capacity of approx 3 Itr min The SUPPLY line must be connected to the LOWER port 2 Open the inlet and outlet of these lines 3 Set the required pressure This must be 2 bars higher than the maximum occurring system pressure Checking the rotation direction 1 Fill the pump with
20. er 12 Cil retainer 13 Bearing cover 14 Retaining ring 15 Allen screw 16 Retaining ring 17 Ball bearing 18 Key CE CPC 1204 EN 01 37 38 User manual Pomac CPC pumps 19 Set screw 20 Pedestal 21 Hexagon nut 22 Washer 23 Strip 24 Hexagon bolt 25 Hydromotor 26 Allen screw 27 Spring ring 28 Coupling 29 Shaft 30 Plug 31 Bearing bracket 32 O ring CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 8 Shaft sealings 8 8 1 Version S1 Internal mechanical seal unbalanced Item Nr Description 91 Hexagon bolt 92 Washer 94 Seal seat 95 Mechanical seal 96 O ring 8 8 2 Version S12 External mechanical seal unbalanced s2 ss s4 95 96 97 98 ieee Sf T E Item Nr Description 91 Hexagon bolt 92 Washer 93 Hexagon bolt 94 Support ring 95 Washer 96 O ring 97 Seal seat 98 Mechanical seal CE CPC 1204 EN 01 39 8 8 3 Version B1 User manual Pomac CPC pumps Internal mechanical seal balanced SL H e A
21. h the following connections e Couplings according to DIN 11851 DIN 11864 1 SMS etc Tube connections according to NEN 1472 en DIN 1850 Flanges according to EN 1092 1 DIN 11864 2 Tri clamp according to ISO 2852 DIN 32676 en DIN 11864 3 Connections according to client specification Materials e All parts that come into contact with the liquid are designed in stainless steel Materials nr 1 4404 e Atrequest also available in Materials nr 1 4435 or Materials nr 2 4602 Hastelloy C22 CE CPC 1204 EN 01 11 3 8 12 User manual Pomac CPC pumps Construction variants All pumps are available in the following fully exchangeable designs KAM Pump and motor close coupled and placed on adjustable stainless steel feet The motor is provided with a stainless steel shroud KAC KAV IGF Pump fitted to a bearing bracket and connected to an hydraulic motor CE CPC 1204 EN 01 3 9 Sh User manual Pomac CPC pumps aft seals 3 9 1 Materials Binnen de hygi nische normen van EHEDG kunnen de pompen geleverd worden met diverse asafdichtingssystemen The mechanical seals are available in the following materials De Carbon on silicon carbide Carbon on CrMo steel Carbon on Ceramic Hard metal on hard metal Silicon carbide on silicon carbide Tungsten carbide on tu
22. he table below Figure 4 Adjusting the set ring D mm X 0 5 mm 25 83 5 30 83 5 35 88 In case of different seal constructions follow the fitting instructions supplied by the manufacturer 2 Apply some food grade grease to the shaft and push the rotating part of the mechanical seal 98 onto the shaft the seal face facing the impeller 3 If it has been disassembled Mount the O ring 96 and refit the seal seat 97 to the back plate 7 4 Apply some food grade grease to the seal seat 97 and press the static ring of the mechanical seal 98 into the seal seat 5 Fit the back plate 7 to the lantern piece 11 with bolts 6 and washers 5 6 Fit the impeller and the pump cover CE CPC 1204 EN 01 21 User manual Pomac CPC pumps 6 6 Mechanical seal with quench Q1 Q12 iu Figure 5 Mechanical seal Q1 Figure 6 Mechanical seal Q12 6 6 1 Dismounting 1 2 3 4 Dismount the impeller and the pump cover Push the rotating parts of the mechanical seal 95 off the shaft In case of a balanced seal Q12 loosen the lock screws of the rotating part of the seal Disassemble the back plate 7 and the seal housing 94 and r
23. inery Directive 2006 42 EC 1st Edition December 2009 Pomac bv Feithspark 13 9356 BX Tolbert The Netherlands hereby declares completely under own responsibility that the pumps mentioned below Model Centrifugal pump Types CPC Execution KAM KAV KAC IG IGH Materials 1 4404 AISI 316L or 1 4435 or 2 4602 Hastelloy C22 to which this declaration refers to are in conformity with the following standards Standards EN ISO 12100 parts 1 amp 2 NEN EN 60204 part 1 EN 809 The pump must not be put into service until the final machinery into which it is to be incorporated has been declared in conformity with the provisions of this Directive 2006 42 EC where appropriate Issued at Tolbert 277 of April 2012 alst H Poelstra Managing Director 2 CE CPC 1204 EN 01 User manual Pomac CPC pumps Table of contents lr 3 4 5 6 Introduction eis BE eA eS Sie hi ate na 1 1 General Imtomaton ennemis 1 2 Warranty cete bete bete pedea Ir are ade ete 1 3 Transport and receipt ener 1 4 Pump identification nano enne 1 5 Type 01010 iii iia 1 6 Ordering spare parts ooomcinnnnnnnnccnnncnnnonnnnncnn nac c cnn A E O EE 2 1 General niormaton entree nennen nnne 2 2 INSUUCIONS He eoim o t P ERI DD IRR UHR he NI P iE DIOR Tee teu a ge Eege ee 2 4 Procautiots serr oean a E RE NA AE 2 5 Changed application oooooncninncnnnccnnnnnnnocnnnccccnnncnnnnn naar cnc cra rca nennen Descript
24. ines Remove the back plate 7 from the lantern piece 11 and pull the entire flush configuration 974913 including the shaft sleeve 98 from the shaft Remove the entire flush configuration 972 913 from the back plate and remove the O ring 93 5 Separate the flush compartment 97 from the seal seat 913 6 Remove the O ring 93 and the fixing ring 253 7 8 9 Push the static rings of both mechanical seals 95 910 out of their respective seats Remove the O ring 99 from the shaft sleeve Remove the rotating ring of mechanical seal 910 and the support ring 912 from the shaft sleeve 10 Remove the snap ring 911 11 Remove the support ring 912 and the rotating ring of mechanical seal 95 from the shaft sleeve Mounting 1 OP oo ON OD Apply some food grade grease into the seat of the flush compartment 97 and push the static ring of the mechanical seal 910 in the seat Ensure the slot in the static ring coincides with the lock pin Apply some food grade grease into the seat of the seal seat 913 and push the static ring of the mechanical seal 95 in the seat Insert the shaft sleeve 98 from outside in through the seal seat 913 Place the fixing ring 94 over the static seal ring 95 in the seal seat 913 Apply some food grade grease to the shaft sleeve 98 and fit the rotating ring of the mechanical seal 95 onto the shaft sleeve the seal face facing the static sea
25. information This manual provides important information regarding the correct way of installing operating and servicing this pump This manual also provides information necessary to prevent the installer operator from injury or discomfort during installation and operation of this pump and to ensure the correct use and reliable performance of this pump This manual represents the most recent information regarding the pump types mentioned in this manual at the time of going to print However POMAC reserves the right to modify the construction of the pump types mentioned as well as the contents of this manual without prior or afterward notification Read this manual thoroughly before installing operating or servicing this pump Ensure that operators and maintenance staff are familiar with the symbols used Follow the instructions in this manual step by step Warranty Warranty is strictly limited to the conditions specified by POMAC and will only be granted according to these conditions Warranty will only come into force provided that e the pump has been installed and put into operation strictly in accordance with the instructions given in this manual e maintenance and repairs have been carried out according to the instructions given in this manual e exclusively original POMAC parts or parts provided by POMAC have been used for replacing parts e the pump has not been used for applications other than those shown in the specification
26. ion CPC centrifugal pump cooocccconccinoccnancccconcnnnonananonnnanc cnn nncn arrancan Beli PUMP deser ici 32 COMIICA ON cba ura terea A E E eeler te BT isina a o E EAT IEE AE 3 4 Pump impeller desigN oooooonnncccnnnncccnnnnnccnnnncccnnnncrcn cnn 3 5 Type description ceiu Arari ei e en 3 6 Connections tae e Ge Eaa E 3 7 Maternal arena en Ina 3 8 Construction varia MSi ee ee aan 3 9 Shaft seals 1 2 12 msn Een 3 91 Material iii erede dt 3 9 2 Type indication Codeine ia ae i nn rc cnn rr 3 9 3 Explanation double action mechanical seals sssessessssesrnenseeeerenn ne 3 10 Bum Installation 2 A te pee teet pateste te ort eei ee diet dv utes 42 Assembling Type IQ tere Pte rt tee lee 4 3 Connecting the electric motor sssssssssssseeeene eene PUTING Ito operation tdeo E eite Ree E i eder ees 5 1 PRECAUTIONS fnt ted ta eet c dee Do Pr cde 5d General ei eret reda rettet ie Ee ben e ebbe 5 1 2 ene RE Dude EE 5 2 Checking the rotation direction sssssssseeeeneeens 533 Putting into Operation ete e beta ede edens 5 4 In operatiOl oco oi tette E E t cete D e et caede etes bd NOISOz ou bonne etre te Estee de ree te br EE E Pss 5 4 8 Daly maintenance ocomocccnnnnncccnnnnccccnnnneccnnnnnencnnnnnn cnn nando cnn irk RE EAKA GREER 5 4 3 Cleaning procedure and agemts nen naar cnn rca 5 4 4 Periodic maintenance
27. l ring Fit a support ring 912 onto the shaft sleeve Fitthe snap ring 911 onto the shaft sleeve Fit the other support ring 912 onto the shaft sleeve Fit the rotating ring of the other mechanical seal 910 onto the shaft sleeve the seal face facing outward and the spring bearing to the support ring This set up is called a Back to Back assembly 10 Fit the O ring 93 Fit the seal seat 913 to the flush compartment 97 by means of the Allen screws 11 Fit the O ring 96 and fit the assembly to the back plate 7 CE CPC 1204 EN 01 23 24 User manual Pomac CPC pumps 12 Slide the entire subassembly onto the shaft and fit the back plate 7 to the lantern piece 11 Ensure the shaft sleeve does not slip out of the seal seat 13 Fit the O ring 99 onto the shaft 14 Fit the impeller CE CPC 1204 EN 01 User manual Pomac CPC pumps 6 8 Dismantling and assembling bearings First dismantle the pump unit to the extent that the following parts can be reached and can be dismantled Remove the electric motor and the coupling Disassemble the pump T Ce N Y wil y A V LL CZ AM m KESh NN EC lt gt X XXE pd T c 62 62 SI S Me 2 ED SN N S C709 010 2 0 Q0 09 06 D 06 9 Q0 6 8 1 Dismantling bearing of IG construction 1 Remove the intermediate piece 15 and the bearing cover 21 2 Remove the outer circlip 19 from the beari
28. mm between the impeller and the back plate Gently tighten the bolts of the extension shaft Do not tighten the Allen screw for disassembly of the extension shaft too much ED 0 5 0 5 4 Dismantle the impeller and the back plate and assemble the pump according to the relevant instructions 5 Check the extension shaft for oscillation This must not be more than 0 05 mm CE CPC 1204 EN 01 19 6 3 6 3 Bomm 6 4 6 4 1 6 4 2 20 User manual Pomac CPC pumps Dismantling and fitting the shaft seal Instructions The fitting dismantling instructions can differ between manufacturers You will find below the fitting dismantling instructions for the most commonly applied mechanical seals in Pomac pumps In other cases always follow the instructions that are provided by the supplier of the seal in question Interior mechanical seal S1 B1 H Figure 1 Mechanical seal S1 Figure 2 Mechanical seal B1 Dismounting 1 Dismantle the pump cover and the impeller 2 Remove the rotating ring of the mechanical seal 95 from the extension shaft 3 Dismantle the back plate 7 4 Push the static ring of the mechanical se
29. nced stainless steel extension shaft The design KAC is fitted with a B5 flange motor acc to IEC provided with a balanced stainless steel extension shaft Only available up to build size IEC 132 The electric motors are available in all possible efficiency classes voltages insulation categories protection categories and in low noise and in ATEX design The designs IG and IGH are available with air driven hydro combustion and electric motors CE CPC 1204 EN 01 13 User manual Pomac CPC pumps 4 Installation 4 1 General The foundation must be smooth and level For the KAM design set the adjustable legs using the leg adjustment bolts 21 in such a way that the pump is stable on all 4 legs Secure the leg adjustment bolts with the lock nuts 22 Verify that the system pressure does not exceed the permitted operating pressure Verify that the pipes do not show any leakage The pipes must be installed and connected stress free If backflow of the liquid flow is undesired or there is a chance of undesired liquid mixing apply a non return valve 4 2 Assembling Type IG Type IG can be assembled with all drives Proceed as follows 1 5 Fit one coupling half to the pump shaft and one half to the drive shaft 2 Place the pump on the foundation and fix it 3 4 Level the drive to the correct height in relation to the pump using the copper shims under the Place the drive on the foundation Keep a gap of 3 mm betwe
30. ng 17 at drive side and push the shaft with the other bearing out of the bearing bracket 3 Remove the other outer circlip 19 and remove the bearing from the shaft 4 Remove the bearing from the bearing bracket 6 8 2 Assembling bearing of IG construction Nu First check both oil catchers 16 in the intermediate piece 15 and the bearing cover 21 Replace them if they are damaged Lubricate the inner and outer ring of the bearing shaft and bearing seats in order to prevent seizing up Fit the bearing 17 to the shaft at pump side and fix it with circlip 19 Insert the shaft 29 at pump side into the bearing bracket 18 Fi the intermediate piece 15 with bolts 13 and washers 14 Fit the bearing 17 onto the shaft at motor side and press i tinto the bearing bracket 18 Fix the bearing with circlip 19 Fit the bearing cover 21 Ox gi co m 6 9 Application IEC standard motors with extension shaft When replacing a standard IEC standard electric motor the new motor must always be designed with an axially fixed shaft at flange side CE CPC 1204 EN 01 25 User manual Pomac CPC pumps 7 Dimensions 7 1 Dimensions drawings CPC KAC 26 CE CPC 1204 EN 01 User manual Pomac CPC pumps CPC IG CPC IGH CE CPC 1204 EN 01 27 User manual Pomac CPC pumps 7 2 Dimensions electric motors KA series powe
31. ngsten carbide Carbon on hard metal mechanische asafdichtingen zijn leverbaar met EPDM Viton Perbunan en Teflon O ringen Alle materialen voldoen aan FDA CFR 21 of de gelijkwaardige Europese normen Pomac pumps are supplied as standard with an interior balanced mechanical seal carbon on silicon carbide with EPDM O rings type EHP configuration B1 1 3 9 2 Type indication code Code Description type S1 interior single mechanical seal unbalanced NP 12 exterior single mechanical seal unbalanced according to EHEDG EHP B1 interior single mechanical seal balanced NP B11 interior single mechanical seal balanced according to EHEDG EHP Q1 double mechanical seal with Quench unbalanced NP Q12 double mechanical seal with Quench 1 side balanced according to EHEDG EHP F11 double mechanical seal with Flush unbalanced according to EHEDG EHP 3 9 3 Explanation double action mechanical seals Quench e Flush e This is applied where a constant pressure free flush is required because of the product This is applied when a considerable underpressure prevails on the suction side or when a constant flushing is required in order to prevent fouling of the shaft seal The pressure of the flushing fluid must always be higher than the discharge pressure of the pump 3 10 Drive The designs KAM and KAV are fitted with B3 B5 foot flange motors acc to IEC provided with a bala
32. nnection G inch H metric 9 Options V heating jacket drain T turbine X ATEX P PTC probe in electric motor S extra surface roughness treatment internal parts W z internal parts hardened CE CPC 1204 EN 01 1 6 1 7 User manual Pomac CPC pumps Ordering spare parts An order form for ordering spare part is included in the documents accompanying this pump You should state the following details on this form e your address data e the serial number and the type number these are stated on the type plate of the pump and on the first page of this manual e the item numbers and quantities of the desired parts See chapter 8 for the sectional drawings of the pump with the corresponding parts lists with item numbers Manufacturer CPC pumps are manufactured by Pomac bv Feithspark 13 9356 BX Tolbert The Netherlands Tel 31 0 594 5128 77 Fax 31 0 594 5170 02 info pomacpumps com www pomacpumps com CE CPC 1204 EN 01 User manual Pomac CPC pumps 2 Safety 2 1 General information This manual provides information necessary to prevent the installer operator from injury or discomfort during installation and operation of this pump and to ensure the correct use and reliable performance of this pump e Read this manual thoroughly before installing operating or servicing this pump e Ensure that operators and maintenance staff are familiar with the contents of this manual and with the instr
33. nocccccnoccccnonoccccnononcnnnnnoncncnnno cnn cnnnonccnnnnnn nc nnnnannncnnns 5 5 Ma UMCU a uiri it did eis Overhaul and repair esses eene nnn entente nsns nnne tenens 6 1 Removing the PUMO eirean Aaea AREA A aria AR AAE dA 6 2 Dismantling and assembling the poump 6 2 1 Dismantling the pump nennen 6 2 2 Assembling the PUMP sirsiciiuirriarerirriiaersraatani radiaani arinki dinui baniak radien 6 2 3 Adjusting the extension haft 6 3 Dismantling and fitting the shaft ee Bt AMSUUCUIONS deeem pecie tele t testet ite ria 6 4 Interior mechanical seal S1 Bi GAT l DEMOUN RTE 6 42 MONG t iiec aa EAR aA NEA aaa 6 5 Exterior mechanical seal Gi 6 51 ETA RE CE CPC 1204 EN 01 User manual Pomac CPC pumps 8 95 22 MOUNU S dot eene M n Lt eu 21 6 6 Mechanical seal with quench Q1 Q12 uessssssennnnnnennnnnnnnnnnnnnnnennnnnnnnnnennnnnnnennnonnennnnann 22 6 6 1 Dismountirigis iif st Sere eno eta 22 E Ee le EE 22 6 7 Mechanical seal with flush EI 23 Gale SDiSmo untingiss i o eem teet belts Detalle ALLEE XS 23 Gags MOUNU eio bebe oo elt ble noe nr td 23 6 8 Dismantling and assembling bearings eene enn 25 6 8 1 Dismantling bearing of IG copnstructlon eene 25 6 8 28 Assembling bearing of IG construction ssesssesssesssesssetesrtstrnstnretnnstnnntnnesnnnsnnsnnssrnnnnn 25 6 9 Application IEC standard motors with extension shaft 25 TS DIMENSIONS ERR EID LIUIUS 26
34. olt 14 Washer 15 Hexagon nut 16 Motor 17 Washer 18 Hexagon bolt 32 O ring CE CPC 1204 EN 01 35 User manual Pomac CPC pumps 8 6 CPC IG f LI E IN PT RO N a AN We SOIVOODO 6 5 06 17 6 9 QU SM uM Lm 7 SS N CES rs SS Wi S 7 WNNSNNNNS N N N E amp 5 3 Item nr__ Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Washer 6 Hexagon bolt 7 Back plate 8 O ring 9 Cap nut 10 Hexagon bolt 11 Washer 12 Pedestal 13 Hexagon bolt 14 Washer 15 Bearing cover 16 Oil retainer 17 Ball bearing 18 Bearing bracket 19 Circlip 20 Pedestal 21 Bearing cover 22 Washer 23 Hexagon bolt 24 Shaft 25 Key 32 O ring 36 CE CPC 1204 EN 01 8 7 CPC IGH User manual Pomac CPC pumps IGH is an IG construction driven by a flanged on hydromotor EBEN REC LL AA qx e Eoo Y Nz a D Inm I d WS P I d oe 4 OR Oe IN x N 3 AN N zm Nn N o t Lad a E ee ETE LLILB T MET SL AL TES 3636209 C900 0 0 50 1 IO G 0009 28 17 Q8 25 Item Nr Description 1 Impeller nut 2 O ring 3 Pump casing 4 Impeller 5 Spring ring 6 Allen screw 7 Back plate 8 O ring 9 Allen screw 10 Cap nut 11 Wash
35. r KW Build in dimensions electric motors 3000 1500 1000 80 A 0 75 0 55 0 37 90S 90L 2 90L 4 6 8 100L 2 4A 100L 4B 100L 6 8A 100L 8B 132S 2A 6 8 132S 2B 4 132M 4 6A 8 132M 6B 225M 2 2258 4 225M 4 6 2258 8 225M 8 2808 2 280S 4 6 2808 8 280M 2 280M 4 6 280M 8 28 CE CPC 1204 EN 01 User manual Pomac CPC pumps 7 3 Pump dimensions Ero pmmensiorerimpcasmgcro CPC Dimensions pump casing CPC 16033 200 40 40 68 67 98 16044 1 5 200 50 50 68 69 100 21044 250 50 50 8 75 115 21055 2 250 65 65 82 80 120 21066 2 2 5 250 80 80 82 80 120 26044 300 50 50 75 115 26055 2 300 65 65 80 120 26066 2 2 5 300 80 80 80 120 26088 3 300 80 161 31044 350 50 50 75 115 31055 2 350 65 65 80 120 31066 2 2 5 350 80 80 80 120 31088 3 350 161 310108 3 350 98 153 310128 3 350 95 157 7 4 Dimensions IGH Bearing bracket for hydromotors Beater O 180 220 250 36 160 230 179 190 225 22 188 257 CE CPC 1204 EN 01 User manual Pomac CPC pumps 7 5 Dimensions IG series
36. s according to which the pump was sold e no changes have been made to the construction of the pump itself by the buyer e the damage is not the result of work carried out by persons not qualified or appointed e the damage has not been caused through major force Transport and receipt 1 Check to see if the pump has not been subject to damage during transportation If this is the case report it directly to the carrier and to POMAC 2 If the pump is delivered on a pallet leave it on the pallet for as long as possible This facilitates internal transport 3 If a suitable hoisting device is available use this if the pump is fitted with lifting eyes 4 With the exception of the motors fitted with a stainless steel shroud the motors pumps from construction size 112 or 132 can be fitted with a screw in lifting eye Motor size 100 112 132 160 180 200 Lifting eye thread size M8 M10 M10 M12 M16 CE CPC 1204 EN 01 5 User manual Pomac CPC pumps 1 4 Pump identification lo Year ity m h Pressure kW Speed Tel 31 0 594 512877 www pomacpumps com O e Onthe type plate of the pump the serial number and the type code are indicated The type code describes the arrangement of the pump e Always refer to the serial number and the type code in any correspondence and when ordering parts These pump data ar
37. seal is equipped with it e Check that the high flush pressure does not provoke any undesired leakage to the liquid to be pumped e The valve in the suction pipe must always be completely open e Regularly check that the inlet pressure is not too low to avoid the occurrence of cavitation in the pump e Regularly check the delivery pressure e Regularly check the shaft seals for leakage The pump may never run without liquid Cleaning procedure and agents The pumps are suitable for being CIP cleaned Use the cleaning agents recommended for the products Periodic maintenance The pumps basically are maintenance free Only the following items require periodic attention Periodically check that the quench or flush system is still set at the correct pressure and capacity e The electric motor bearings are greased for their entire life and do not require any maintenance or subsequent lubrication This also applies to the designs IG and IGH if designed with grease lubricated bearings e Regularly check the oil level for designs IG and IGH designed with oil bath lubricated bearings This oil must also be changed annually or after every 5000 operating hours Check that the spent oil is disposed of in the correct manner environment e A mechanical seal may not show any visible leakage If this is the case replace the shaft seal e Ifa mechanical seal does not show any visible leakage disassembly is not recommended CE CPC 1204 EN 01
38. uctions given e Ensure that operators and maintenance staff are familiar with the symbols used e Follow the instructions in this manual step by step e Store this manual in a place that is known and accessible to any user 2 2 Instructions This manual contains instructions with regard to the safety of the user the continued good functioning of the pump and hints to facilitate certain actions or procedures These instructions are indicated with the following symbols A Warning May cause injury to the user Act strictly in accordance with the instructions given j D Caution May cause severe damage to the pump or bad functioning Closely follow the instructions given s Note Hint or instruction that can facilitate certain actions Issues which require extra attention are printed in bold 2 3 Staff All personnel in charge of the installation operation or maintenance and overhaul of the pump should have received the necessary training CE CPC 1204 EN 01 User manual Pomac CPC pumps N 4 Precautions When performing maintenance work to the pump ensure that the drive of the pump is shut down and can not be switched on unintentionally All work on and with the pump must always be in accordance with all the prevailing standards regarding occupational health and safety as well as machine safety that may cause injuries See to is that the pump is depressurized when it has to be disassembled for overhaul wv
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