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Rotor Clearance

Rotor clearance must be precisely maintained to provide maximum pumping efficiency, yet prevent

contact between rotors, rotor housing, and front cover during operation. If pumping efficiency is

below expectations, or if parts contact has occurred during operation (Within rated differential

pressure), check, rotor clearances and adjust if incorrect.

Shims

Rotor to Housing

Radial Top & Bottom

Back Face Front

Face

Rotor to

Rotor

Radial Sides

Figure 20

Standard Rotor Clearances (Millimeters)

Model

Back Face

Front Face

Radial Sides

Radial Top &

Bottom

Rotor to

Rotor

ZLF120-021-21

0.15

0.3

0.15

ZLF220-040-25

0.2

0.3

0.15

0.2

ZLF225-062-21

0.2

0.4

0.2

ZLF330-102-25

0.3

0.4

0.2

0.3

ZLF340-144-21

0.3

0.5

0.3

ZLF440-227-25

0.45

0.55

0.3

0.4

ZLF450-334-21

0.45

0.7

0.45

0.4

ZLF580-700-12

0.45

0.7

0.45

0.4

ZLF5100-1000-08

0.45

0.7

0.45

0.4

ZLF5120-1200-06

0.45

0.7

0.45

0.4

There are two areas of rotor clearances as illustrated following:

Rotor tip clearance – not adjustable set by manufacturer

Front and back face clearance – adjustable by shim

Rotor width and body depth are fixed at manufacture. Therefore, with the correct rotor size selected,

the only maintenance adjustment that can be made is the proportion of front and rear clearance.

Measure the front clearance as follows:
1.

The rotor to rotor housing back face clearance is maintained by the shim.

Check that the rotor housing is tight to gearbox. And check the rotor bolts are tight.

Measure the clearance between the back face of the pump housing and the back of the rotor with

a feeler gauge. Check the reading with the recommended back face clearance.

If incorrect, adjust by adding or removing shim plates from behind the pump housing.

Check each rotor and adjust as necessary.

Содержание JEC JRZLF Series

Страница 1: ...nd you local supplier at www verderliquids com Operation and maintenance manual JEC_ZLF_man rev01 2019_ uk JEC HYGIENIC PUMP SOLUTIONS JEC JRZLF SERIES Hygienic rotary lobe pumps with front bearing cover ...

Страница 2: ... A Sanitary Standards Inc EHEDG European Hygienic Engineering Design group ATEX European Explosion proof certification 1935 2004 EC CE Declaration of conformity SAFETY DO S and DON TS INSTALLATION Installation Start Up TROUBLESHOOTING Troubleshooting MAINTENANCE Pump housing disassembly Inspection Seal assembly Pump housing assembly Rotor clearance Rotor Timing Shaft and bearing replacement TECHNI...

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Страница 8: ... pump DO NOT start the pump until all personnel are clear DO NOT touches the pump or the lines when pumping hot fluids or when performing Clean In Place CIP procedures DO NOT run the pump with BOTH the suction inlet and discharge outlet blocked Running the pump with the inlet the blocked will cause serious damage to the pump DO NOT checks pump rotation with liquid in the pump DO NOT runs the pump ...

Страница 9: ...t be seen look through the pump case adaptor after takeoff motor shroud Bump means to momentarily apply power to the motor and then immediately remove power 3 Direction of rotation must only be checked with a completely filed system Where double mechanical shaft seals are installed the flush supply must be operational Any dry running will result in seal damage 4 The motor rating plate should be ch...

Страница 10: ... temp Leaks in piping or pump Dissolved gas in product Mechanical noise Excessive weight from piping Pump body distorted Excessive discharge pressure Worn bearing Worn gears Rotor to rotor contact Increase net inlet pressure Slow pump reduce product Reduce temperature Repair leaks Reduce discharge pressure Check tolerances Support piping Check align and level Reduce discharge pressure Replace bear...

Страница 11: ...re listed in parts list refer to the sectional view on pages 22 24 Loosen and remove the four cap nuts and two wrench bolts Figure 2 from the cover And use special Jack bolt to loose stick front bearing cover Figure 3 And remove the cover If it is stuck tap on the cover with a soft hammer Figure 1 Figure 2 Figure 3 To remove extended shaft rotor bolt place the plastic dowel between the rotors to f...

Страница 12: ... could be changed too Remove the extended shafts rotors and seal ring in rotor casing as shown in figure 5 Figure 5 1 Figure 5 2 The rotors can be removed from the pump housing by pulling straight If it is stuck tight alternately tap on the back of the inlet and outlet ports with soft hammer Handle the rotors with care to avoid damage The seal ring can be replaced without remove the pump housing a...

Страница 13: ...ge If the housing is stuck alternately tap on the back of the inlet and outlet ports with a soft hammer Figure 9 Please handle the shims with care to avoid lost and damage when assemble and disassemble Figure 10 Figure 11 Figure 12 Clean and examine all of the pump components for damage Replace damaged components as required JEC recommends replacing all of the wetted elastomers during reassembly ...

Страница 14: ... With the rotor lying face down on a table and push downward to press the seal ring in to the rotor in Figure 15 Figure 15 INSPECTION 1 Inspect O rings and seals for reuse Worn O rings and seals should be replaced 2 Inspect seal faces for scoring or cracks Replace any seal faces that are damaged 3 Inspect shaft shoulder matched to rotors and other metal parts for wear or damage 4 Inspect rotor gal...

Страница 15: ...ousing onto the gear box and secure the four housing set nuts Place the plastic dowel between the rotors Tighten the first rotor bolt with a spanner To tighten the second rotor place the plastic dowel on the opposite side of the rotor and tighten the second rotor bolt to the proper torque Before tight four front cover nuts wrench bolts should be loosen as shown arrow After tighten for cover nuts w...

Страница 16: ... 45 0 45 0 7 0 45 0 4 ZLF580 700 12 0 45 0 45 0 7 0 45 0 4 ZLF5100 1000 08 0 45 0 45 0 7 0 45 0 4 ZLF5120 1200 06 0 45 0 45 0 7 0 45 0 4 There are two areas of rotor clearances as illustrated following Rotor tip clearance not adjustable set by manufacturer Front and back face clearance adjustable by shim Rotor width and body depth are fixed at manufacture Therefore with the correct rotor size sele...

Страница 17: ...elical gears 18 on the shafts Gear spacers 13 are used to adjust the location and the timing When adjusting timing move only one of the two gears 6 Place the wooden dowel between the rotors 7 Bend away the tab of the lock washer 19 on one shaft Loosen the lock nut and temporarily insert shim stock between the gear and gear spacer Tighten the lock nut reassemble the rotor in its correct location an...

Страница 18: ...he bearing lock washer Reinstall the rotors 5 on the drive and idle shafts Lock the rotor with a plastic dowel Remove the lock nut 19 and lock nut washer from the drive shaft 7 and idle shaft 8 7 Pull the two helical gears 18 off the pump shafts Remove the gear keys 14 8 Remove the front bearing gland set bolts 9 Place the gearbox 1 wet end rotor side down on an arbor press 10 Protect the shaft en...

Страница 19: ...ar oil seal gland 20 into gear box 1 9 Place the gear spacer 13 over the shafts 10 Clean and lubricate the gear area of the shaft and the face of the lock washer with oil 11 Position both shaft key 15 and gear keys 14 to the 12 00 position 12 Place the gear lock washer and lock nut 19 onto the shafts and hand tighten 13 After the gears are installed turn the shafts to make sure they turn freely an...

Страница 20: ...le mechanical seal Double mechanical seal Other seal option please contact JEC Maximum Flushing Water Pressure Maximum 0 5 bar 7 psi Flushing Water Consumption 0 25 0 5 liter min 30 60 cubic inches min Stationary Seal ring Material Tungsten Carbide Rotating Seal Ring Material Tungsten Carbide standard or Silicon Carbide O ring Material EPDM standard Lip seal Material PTFE Polytetrafluoroethylene R...

Страница 21: ...13 324 458 522 198 210 320 121 30 80 324 170 247 55 67 14 15 ZLF560 700 12 818 470 458 587 198 210 320 178 30 80 324 170 247 55 67 14 15 ZLF580 1000 08 974 668 458 642 198 210 320 235 30 80 324 170 247 55 67 14 15 ZLF5100 1200 06 1014 660 458 662 198 210 320 255 30 80 324 170 247 55 67 14 15 Model No Ports Dimension B1 mm Weight Volume ISO BS DIN SMS FLANGE KG CBM ZLF120 021 21 2 22 26 30 22 30 25...

Страница 22: ...22 PARTS LIST EXPLODED VIEW ZLF120 ZLF200 and ZLF300 ...

Страница 23: ...23 NB Oil Seal Cover 23x43x7t NBR 1 1 PMZL OS23 FP Oil Seal Cover 23x43x7t FPM 1 1 12 PMZL LW05 CS Lock Washer S45C 1 2 12 1 PMZL LN05 CS Lock Nut S45C 1 2 13 PMZL PT12 P1 Breather Gearbox PT 1 2 PE 1 1 14 PMZL HG1X CS Helical Gear S45C 1 2 15 PMZL PN1G SS Dowel Gear Box Φ6 SUS304 1 2 16 MMZL GS1X CS Spacer Gear Φ35x5L S45C 1 2 17 PMZL BE05 CS Bearing Rear 5205 S45C 1 2 18 MMZL BS0X CS Spacer Bear...

Страница 24: ...OR A028 PF O ring Rotor AN028 Perfluoro 1 2 53 PCOR A220 NB O ring Rotor Case AN220 NBR 1 2 PCOR A220 EP O ring Rotor Case AN220 EPDM 1 2 PCOR A220 FP O ring Rotor Case AN220 FPM 1 2 PMOR A220 PF O ring Rotor Case AN220 Perfluoro 1 2 123 Refer to Rotor Case Section Rotor Case High Pressure SUS316L 1 1 124 Refer to Rotor Section Rotor High Pressure SUS316L 1 2 125 MMZL SE1X SS Extend Shaft Check Si...

Страница 25: ...TRICLAMP SUS316L 1 1 MMZF 120K SS Rotor Case 2 FLANGE SUS316L 1 1 124 MMZF SW1B SS Rotor Single Wing SUS316L 1 2 MMZF BW1D SS Rotor Bi Wing SUS316L 1 2 MMZF BW1H SS Rotor Bi Wing high temp clearance SUS316L 1 2 MMZF BL1D SS Rotor Bi Lobe SUS316L 1 2 MMZF TL1D SS Rotor Tri Lobe SUS316L 1 2 MMZF TL1H SS Rotor Tri Lobe high temp clearance SUS316L 1 2 MMZF HL1B SS Rotor Heli Lobe SUS316L 1 2 MMZF HL1D...

Страница 26: ...COR A028 EP O ring Rotor AN028 EPDM 1 4 PCOR A028 FP O ring Rotor AN028 FPM 1 4 PMOR A028 PF O ring Rotor AN028 Perfluoro 1 4 52 PMZL SR1X TC Seal Ring TC 2 8 PMZL SR1X SI Seal Ring SiC 2 8 53 PCOR A220 NB O ring Rotor Case AN220 NBR 1 4 PCOR A220 EP O ring Rotor Case AN220 EPDM 1 4 PCOR A220 FP O ring Rotor Case AN220 FPM 1 4 PMOR A220 PF O ring Rotor Case AN220 Perfluoro 1 4 54A PMZL SSB1 HP Sin...

Страница 27: ...pressure TC SUS304 1 4 PMZL DSB1 HS Double Seal Body Case High pressure SiC SUS304 1 4 62 PCOR A036 NB O ring Case Double seal AN036 NBR 1 4 PCOR A036 EP O ring Case Double seal AN036 EPDM 1 4 PCOR A036 FP O ring Case Double seal AN036 FPM 1 4 PMOR A036 PF O ring Case Double seal AN036 Perfluoro 1 4 63 PMZL DRR1 CA Rotation part Double Seal Shaft Carbon SUS304 1 4 PMZL DRR1 TC Rotation part Double...

Страница 28: ...r 32x52x8t FPM 1 1 12 PMZL LW07 CS Lock Washer S45C 1 2 12 1 PMZL LN07 CS Lock Nut S45C 1 2 13 PMZL PT12 P1 Breather Gearbox PT 1 2 PE 1 1 14 PMZL HG2X CS Helical Gear S45C 1 2 15 PMZL PN2G SS Dowel Gear Box Φ10 SUS304 1 2 16 MMZL GS2X CS Spacer Gear Φ35x6L S45C 1 2 17 PMZL BE07 CS Bearing Rear 5207 S45C 1 2 18 MMZL BS2X CS Spacer Bearing S45C 1 2 19 PCZL IM10 SS I bolt M10 SUS304 1 2 20 PMZL BE08...

Страница 29: ...2 4 47 PMNP PT18 SS Nipple Flush PT 1 8 for double seal SUS304 1 2 48 PCZL NA12 SS Name Plate SUS304 1 1 51 PCOR A031 NB O ring Rotor AN031 NBR 1 2 PCOR A031 EP O ring Rotor AN031 EPDM 1 2 PCOR A031 FP O ring Rotor AN031 FPM 1 2 PMOR A031 PE O ring Rotor AN031 Perfluoro 1 2 53 PCOR A225 NB O ring Rotor Case AN225 NBR 1 2 PCOR A225 EP O ring Rotor Case AN225 EPDM 1 2 PCOR A225 FP O ring Rotor Case ...

Страница 30: ...N M08L SS Lock Nut M8 SUS304 1 8 134 PMZL LB09 SS Bush Lock Nut Ø 13xØ 9x13 SUS304 1 8 135 PCWB M08G SS Wrench Bolt M8x30L SUS304 1 4 136 PCWB M08H SS Wrench Bolt M8x35L SUS304 1 2 Note 1 Please refer to appendix list for the parts with marked 2 Please contact local distributor or JEC for purchased product before 2011 October Rotor case Front cover Gear box Stud bolt and Shim ...

Страница 31: ...ase 2 5 TRICLAMP ZLF225 SUS316L 1 1 MMZF 225K SS Rotor Case 2 5 FLANGE ZLF225 SUS316L 1 1 124 MMZF SW2A SS Rotor Single Wing ZLF220 SUS316L 1 2 MMZF BW2A SS Rotor Bi Wing ZLF220 SUS316L 1 2 MMZF BW2C SS Rotor Bi Wing high temp clearance ZLF220 SUS316L 1 2 MMZF BL2A SS Rotor Bi Lobe ZLF220 SUS316L 1 2 MMZF TL2A SS Rotor Tri Lobe ZLF220 SUS316L 1 2 MMZF TL2C SS Rotor Tri Lobe high temp clearance ZLF...

Страница 32: ...COR A031 EP O ring Rotor AN031 EPDM 1 4 PCOR A031 FP O ring Rotor AN031 FPM 1 4 PMOR A031 PF O ring Rotor AN031 Perfluoro 1 4 52 PMZL SR2X TC Seal Ring TC 2 8 PMZL SR2X SI Seal Ring SiC 2 8 53 PCOR A225 NB O ring Rotor Case AN225 NBR 1 4 PCOR A225 EP O ring Rotor Case AN225 EPDM 1 4 PCOR A225 FP O ring Rotor Case AN225 FPM 1 4 PMOR A225 PF O ring Rotor Case AN225 Perfluoro 1 4 54A PMZL SSB2 HP Sin...

Страница 33: ...pressure TC SUS304 1 4 PMZL DSB2 HS Double Seal Body Case High pressure SiC SUS304 1 4 62 PCOR A039 NB O ring Case Double seal AN039 NBR 1 4 PCOR A039 EP O ring Case Double seal AN039 EPDM 1 4 PCOR A039 FP O ring Case Double seal AN039 FPM 1 4 PMOR A039 PE O ring Case Double seal AN039 Perfluoro 1 4 63 PMZL DRR2 CA Rotation part Double Seal Shaft Carbon SUS304 1 4 PMZL DRR2 TC Rotation part Double...

Страница 34: ... 45x70x12t FPM 1 1 12 PMZL LW10 CS Lock Washer S45C 1 2 12 1 PMZL LN10 CS Lock Nut S45C 1 2 13 PMZL PT34 P1 Breather Gearbox PT 3 4 PE 1 1 14 PMZL HG3X CS Helical Gear S45C 1 2 15 PMZL PN2G SS Dowel Gear Box Φ8 SUS304 1 2 16 MMZL GS3X CS Spacer Gear Φ35x6L S45C 1 2 17 PMZL BE10 CS Bearing Rear 5210 S45C 1 2 18 MMZL BS3X CS Spacer Bearing S45C 1 2 19 PCZL IM12 SS I bolt M8 SUS304 1 2 20 PMZL BE12 C...

Страница 35: ...4 2 4 47 PMNP PT18 SS Nipple Flush PT 1 8 for double seal SUS304 1 4 48 PCZL NA34 SS Name Plate SUS304 1 1 51 PCOR A142 NB O ring Rotor AN142 NBR 1 2 PCOR A142 EP O ring Rotor AN142 EPDM 1 2 PCOR A142 FP O ring Rotor AN142 FPM 1 2 PMOR A142 PF O ring Rotor AN142 Perfluoro 1 2 53 PCOR A230 NB O ring Rotor Case AN230 NBR 1 2 PCOR A230 EP O ring Rotor Case AN230 EPDM 1 2 PCOR A230 FP O ring Rotor Cas...

Страница 36: ...HN M10L SS Lock Nut M10 SUS304 1 8 134 PMZL LB11 SS Bush Lock Nut Ø 16x12 SUS304 1 8 135 PCWB M10F SS Wrench Bolt M10x40L SUS304 1 4 136 PCWB M10G SS Wrench Bolt M10x60L SUS304 1 2 Note 1 Please refer to appendix list for the parts with marked 2 Please contact local distributor or JEC for purchased product before 2011 October Rotor case Front cover Gear box Stud bolt and Shim ...

Страница 37: ...4 TRICLAMP ZLF340 SUS316L 1 1 MMZF 340K SS Rotor Case 4 FLANGE ZLF340 SUS316L 1 1 124 MMZF SW3A SS Rotor Single Wing ZLF330 SUS316L 1 2 MMZF BW3A SS Rotor Bi Wing ZLF330 SUS316L 1 2 MMZF BW3C SS Rotor Bi Wing high temp clearance ZLF330 SUS316L 1 2 MMZF BL3A SS Rotor Bi Lobe ZLF330 SUS316L 1 2 MMZF TL3A SS Rotor Tri Lobe ZLF330 SUS316L 1 2 MMZF TL3C SS Rotor Tri Lobe high temp clearance ZLF330 SUS3...

Страница 38: ...COR A142 EP O ring Rotor AN142 EPDM 1 4 PCOR A142 FP O ring Rotor AN142 FPM 1 4 PMOR A142 PF O ring Rotor AN142 Perfluoro 1 4 52 PMZL SR3C TC Seal Ring TC 2 8 PMZL SR3C SI Seal Ring SiC 2 8 53 PCOR A230 NB O ring Rotor Case AN230 NBR 1 4 PCOR A230 EP O ring Rotor Case AN230 EPDM 1 4 PCOR A230 FP O ring Rotor Case AN230 FPM 1 4 PMOR A230 PF O ring Rotor Case AN230 Perfluoro 1 4 54A PMZL SSB3 HP Sin...

Страница 39: ...pressure TC SUS304 1 4 PMZL DSB3 HS Double Seal Body Case High pressure SiC SUS304 1 4 62 PCOR A042 NB O ring Case Double seal AN042 NBR 1 4 PCOR A042 EP O ring Case Double seal AN042 EPDM 1 4 PCOR A042 FP O ring Case Double seal AN042 FPM 1 4 PMOR A042 PF O ring Case Double seal AN042 Perfluoro 1 4 63 PMZL DRR3 CA Rotation part Double Seal Shaft Carbon SUS304 1 4 PMZL DRR3 TC Rotation part Double...

Страница 40: ...40 EXPLODED VIEW ZLF400 ...

Страница 41: ...Lock Nut drive shaft S45C 1 2 12 3 PMZL LW15 CS Lock Washer idle shaft S45C 1 2 12 4 PMZL LN15 CS Lock Nut idle shaft S45C 2 4 13 PMZL PT34 P1 Breather Gearbox PT 3 4 PE 1 1 14 PMZL HG4X CS Helical Gear S45C 1 2 15 PMZL PN2G SS Dowel Gear Box Φ8 SUS304 1 2 16 MMZL GS4X CS Spacer Gear Φ35x5L S45C 1 2 17 PMZL BE13 CS Bearing Rear E32213J S45C 2 4 18 MMZL BS4I CS Spacer Bearing inner S45C 2 4 18 1 MM...

Страница 42: ...t Stud Bolt M10 14mm SUS304 2 4 47 PMNP PT18 SS Nipple Flush PT 1 8 for double seal SUS304 1 2 48 PCZL NA34 SS Name Plate SUS304 1 1 51 PCOR A151 NB O ring Rotor AN151 NBR 1 2 PCOR A151 EP O ring Rotor AN151 EPDM 1 2 PCOR A151 FP O ring Rotor AN151 FPM 1 2 PMOR A151 PF O ring Rotor AN151 Perfluoro 1 2 53 PCOR A235 NB O ring Rotor Case AN235 NBR 1 2 PCOR A235 EP O ring Rotor Case AN235 EPDM 1 2 PCO...

Страница 43: ...SUS304 1 2 132 PCWB M10G SS Wrench Bolt M10x60L SUS304 1 8 133 PMHN M10L SS Lock Nut M10 SUS304 1 8 134 PMZL LB11 SS Bush Lock Nut Ø 15xØ 11x13 SUS304 1 8 135 PCWB M12D SS Wrench Bolt M12x40L SUS304 1 4 136 PCWB M12E SS Wrench Bolt M12x80L SUS304 1 2 Note 1 Please refer to appendix list for the parts with marked ...

Страница 44: ...5 TRICLAMP ZLF450 SUS316L 1 1 124 MMZF 450K SS Rotor Case 5 FLANGE ZLF450 SUS316L 1 1 MMZF SW4A SS Rotor Single Wing ZLF440 SUS316L 1 2 MMZF BW4A SS Rotor Bi Wing ZLF440 SUS316L 1 2 MMZF BW4C SS Rotor Bi Wing high temp clearance ZLF440 SUS316L 1 2 MMZF BL4A SS Rotor Bi Lobe ZLF440 SUS316L 1 2 MMZF TL4A SS Rotor Tri Lobe ZLF440 SUS316L 1 2 MMZF TL4C SS Rotor Tri Lobe high temp clearance ZLF440 SUS3...

Страница 45: ...COR A151 EP O ring Rotor AN151 EPDM 1 4 PCOR A151 FP O ring Rotor AN151 FPM 1 4 PMOR A151 PF O ring Rotor AN151 Perfluoro 1 4 52 PMZL SR4X TC Seal Ring TC 2 8 PMZL SR4X SI Seal Ring SiC 2 8 53 PCOR A235 NB O ring Rotor Case AN235 NBR 1 4 PCOR A235 EP O ring Rotor Case AN235 EPDM 1 4 PCOR A235 FP O ring Rotor Case AN235 FPM 1 4 PMOR A235 PF O ring Rotor Case AN235 Perfluoro 1 4 54A PMZL SSB4 HP Sin...

Страница 46: ...pressure TC SUS304 1 4 PMZL DSB4 HS Double Seal Body Case High pressure SiC SUS304 1 4 62 PCOR A045 NB O ring Case Double seal AN045 NBR 1 4 PCOR A045 EP O ring Case Double seal AN045 EPDM 1 4 PCOR A045 FP O ring Case Double seal AN045 FPM 1 4 PMOR A045 PF O ring Case Double seal AN045 Perfluoro 1 4 63 PMZL DRR4 CA Rotation part Double Seal Shaft Carbon SUS304 1 4 PMZL DRR4 TC Rotation part Double...

Страница 47: ... reproduced copied duplicated or transmitted in any form or by any means electronic or mechanical photocopying recording for any purpose without any consent or expressed permission of JEC Ltd Copyright 2016 All Rights Reserved JEC LTD 15 26 Beodeul ro Paltan myun Hwaseong si Gyeonggi do 18578 Rep of Korea Tel 82 31 355 0316 Fax 82 31 355 0319 E mail jec jecpump com Website www jecpump com Ver JRZL...

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