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5 Maintenance

Maintain the pump carefully. Study the instructions carefully and pay special attention to the warnings!
Always keep spare shaft seals and rubber seals in stock.
See separate motor instructions.
Check the pump for smooth operation after service.

5.1

General maintenance

Step 1

Always read the technical data thoroughly. (See chaper 6 Technical data)

Always disconnect the power supply when servicing the pump.

NOTE
All scrap must be stored/discharged in accordance with current rules/directives.

Step 2

Never service the pump when it is hot.

Danger of burns!

Step 3

Never service the pump with pump and pipelines under pressure.

CAUTION
Fit the electrical connections correctly if they have been removed
from the motor during service. (see 3.3 Pre-use check)

CAUTION
Pay special attention to the warnings!

Atmospheric pressure
required!

Step 4
Recommended spare parts:
Order service kits from the service kits list
See chapter 7 Parts list and service kits

Ordering spare parts
Contact your local Alfa Laval sales company.

Note:
If the pump is supplied with FEP O-rings, Alfa Laval recommends that the casing O-ring is replaced during maintenance
of the pump.

Содержание FM-OS

Страница 1: ...3010 0009 ESE02171 EN4 2016 10 Original manual Instruction Manual FM OS Centrifugal Pump ...

Страница 2: ......

Страница 3: ...ration 12 4 1 Operation control 12 4 2 Trouble shooting 13 4 3 Recommended cleaning 14 5 Maintenance 15 5 1 General maintenance 15 5 2 Dismantling single shaft seal 17 5 3 Dismantling flushed shaft seal 18 5 4 Assembly single shaft seal 19 5 5 Assembly flushed shaft seal 20 5 6 Assembly new shaft 20 6 Technical data 21 6 1 Technical data 21 6 2 Torque specifications 22 6 3 Weight kg 22 6 4 Noise e...

Страница 4: ...hereby declare that Pump Designation FM OS Type From serial number 10 000 to 1 000 000 is in conformity with the following directive with amendments Machinery Directive 2006 42 EC The person authorised to compile the technical file is the signer of this document Global Product Quality Manager Pump Valves Fittings and Tank Equipment Lars Kruse Andersen Title Name Kolding 2013 12 03 Place Date Signa...

Страница 5: ...using the pump 2 1 Important information WARNING Indicates that special procedures must be followed to avoid serious personal injury CAUTION Indicates that special procedures must be followed to avoid damage to the pump NOTE Indicates important information to simplify or clarify procedures 2 2 Warning signs General warning Dangerous electrical voltage Caustic agents 5 ...

Страница 6: ...e pump when partially installed or not completely assembled Necessary precautions must be taken if leakage occurs as this can lead to hazardous situations Always handle lye and acid with great care Never use the pump for products not mentioned in Alfa Laval pump selection program The Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company Maintenance Always read ...

Страница 7: ... 3 Instruction manual 4 Motor instructions 5 Test certificate IF ORDERED Step 2 Remove any possible packing materials from the inlet and the outlet Avoid damaging the inlet and the outlet Avoid damaging the connections for flushing liquid if supplied Step 3 Inspect the pump for visible transport damage Step 4 Always remove the shroud if fitted before lifting the pump 7 ...

Страница 8: ...he colours of the repair breaker must be red and yellow Caution The pump does not prevent back flow when intentionally or unintentionally stopped If back flow can cause any hazardous situations precautions must be taken e g check valve to be installed in the system preventing that described above Note In case of shaft seal leakage the media will drip from the slot in the bottom of the adaptor In c...

Страница 9: ...tion to the warnings Always check the pump before operation See pre use check in section 3 3 Pre use check Step 5 Avoid stresses to the pump Pay special attention to Vibrations Thermal expansion of the tubes Excessive welding Overloading of the pipelines Risk of damage 9 ...

Страница 10: ... the pump if the impeller is fitted and the pump casing is removed Step 2 Dismantle the pump in accordance with instructions in section 5 2 for single shaft seal and 5 3 for flushed shaft seal Step 3 1 Start and stop the motor momentarily 2 Ensure that the direction of rotation of the stub shaft 7 is anticlockwise as viewed from the inlet side See the indication label Step 4 Assemble the pump in a...

Страница 11: ...hine are replaced All metal parts should be sent for material recycling Worn out or defective electronic parts should be sent to a licensed handler for material recycling Oil and all non metal wear parts must be taken care of in accordance with local regulations Scrapping At end of use the equipment must be recycled according to relevant local regulations Beside the equipment itself any hazardous ...

Страница 12: ...pump with both the suction side and the pressure side blocked Explosion danger See the warning label Step 4 CAUTION The shaft seal must not run dry CAUTION Never throttle the inlet side Step 5 Flushed shaft seal 1 Connect the inlet of the flushing liquid correctly 2 Regulate the water supply correctly 3 Observe the steam data O Free outlet I Inlet Correct Free out let Tmax 100 C R1 8 BSP Inlet Pma...

Страница 13: ...r pressure throttling Lamination of precipitates from the liquid Frequent cleaning Cavitation Damage Low inlet pressure Increase the inlet pressure Pressure reduction sometimes to zero High liquid temperature Reduce the liquid temperature Increasing of the noise level Reduce the pressure drop before the pump Reduce speed Leaking shaft seal Dry run Replace All wearing parts Incorrect rubber grade I...

Страница 14: ...an water free from chlorides 1 1 by weight NaOH at 70 C 158 F 1 kg 2 2 lb 100 l 26 4 gal Cleaning agent NaOH water 2 2 l 0 6 gal 100 l 26 4 gal Cleaning agent 33 NaOH water 2 0 5 by weight HNO3 at 70 C 158 F 0 7 l 0 2 gal 100 l 26 4 gal Cleaning agent 53 HNO3 water 1 Avoid excessive concentration of the cleaning agent Dose gradually 2 Adjust the cleaning flow to the process Sterilisation of milk v...

Страница 15: ...urrent rules directives Step 2 Never service the pump when it is hot Danger of burns Step 3 Never service the pump with pump and pipelines under pressure CAUTION Fit the electrical connections correctly if they have been removed from the motor during service see 3 3 Pre use check CAUTION Pay special attention to the warnings Atmospheric pressure required Step 4 Recommended spare parts Order servic...

Страница 16: ... maintenance Regular inspection for leakage and smooth operation Keep a record of the pump Use the statistics for inspection planning Replace after leakage Complete shaft seal Replace when replacing the shaft seal Yearly inspection is recommended Replace complete bearing if worn Ensure that the bearing is axially locked See motor instructions Lubrication Before fitting Lubricate the O rings with s...

Страница 17: ...e and remove it from pump shaft 26 use a plastic hammer if necessary Step 4 1 Remove back plate 9 2 The shaft seal is now accessible Step 5 Turn nut 24 clockwise and remove it from stationary seal ring 23 Step 6 Remove stationary seal ring 23 and seal 25 from back plate 9 Step 7 1 Remove rotating seal ring 27 and O ring 29 from pump shaft 26 2 Remove spring 22 from the rotating seal ring Step 8 1 ...

Страница 18: ...mediate flange 44 Step 3 1 Remove flushing tubes 45 2 Turn seal housing 35 clockwise and remove it together with fastening ring 43 3 Remove O ring 41 from the fastening ring Step 4 Remove stationary seal ring 23 and seal 25 from back plate 9 Step 5 1 Remove screws 39 2 Remove fastening ring 43 and O ring 40 from seal housing 35 3 The shaft seal is now accessible Step 6 Remove rotating seal rings 3...

Страница 19: ...ters the notch in the rotating seal ring Step 3 1 Lubricate the inner surface of rotating seal ring 27 2 Fit spring 22 on the rotating seal ring 3 Push the rotating seal ring over O ring 29 as far as possible against the shoulder Step 4 1 Fit seal ring 25 and stationary seal ring 23 in back plate 9 2 Fit nut 24 turn it anticlockwise and tighten Step 5 Fit back plate 9 together with the stationary ...

Страница 20: ...ate flange 44 on back plate 9 4 Fit and tighten flushing tubes 45 Step 5 1 Push mandrel 46 together with the shaft seal parts onto pump shaft 42 2 Push back plate 9 together with the shaft seal into its correct position Step 6 1 Fit impeller 6 with the rounded parts of the hub outwards and turn it clockwise 2 Check the clearance between back plate 9 and the impeller 0 8 1 mm Step 7 1 Lubricate O r...

Страница 21: ...l types Mechanical single or flushed seal Max water pressure flushed seal Normally atmospheric max 1 bar max 14 5 psi Water consumption flushed seal 0 25 0 5 l min 0 07 0 13 gl Material stationary seal ring AISI 329 with sealing surface of silicon carbide Material rotating seal ring Carbon standard or silicon carbide Material O rings Nitrile NBR standard Alternative material O rings EPDM Viton FPM...

Страница 22: ...es for the screws bolts and nuts in this pump Always use the following torques if no other values are stated This can be a matter of personal safety Size Tightening torque Nm lbf ft M8 20 14 8 M10 40 29 5 M12 67 49 0 M14 110 81 0 6 3 Weight kg Pump Type FM OS Motor 80 Size 1 1kW FM OS 34 Weight can vary depending of configuration Weihgt is only to be seen as a reference value during handling trans...

Страница 23: ...5 82 MR 200 81 MR 300 82 GM 54 FM OS 61 The above LKH noise levels are the same for LKHPF LKHI LKH UltraPure LKH Evap LKHex The above SolidC noise levels are the same for SolidC UltraPure The noise measurements have been carried out using the original motor and shroud at the approximate Best Efficiency Point BEP with water at ambient temperature and at 50 Hz Very often the noise level generated by...

Страница 24: ... 24 ...

Страница 25: ...7 Parts list and service kits The drawing shows FM OS The items refer to the parts list on the part on the page 7 1 Drawings FM OS Single shaft seal FM OS Flushed shaft seal 25 ...

Страница 26: ...list and service kits The drawing includes all items of the pump 7 2 FM OS Centrifugal pump single shaft seal 1 4 28 26 11 2 3 24 27 29 22 21 9 25 23 10 6 7a 5 8 7b 47 49 57 51 50 52 53 54 55 56 48 3010 0014 26 ...

Страница 27: ...DN 40 outlet 8 2 Nut 9 1 Back plate 10 1 O ring 11 2 Stud bolt 21 1 Thrower 22 1 Spring 23 1 Stationary seal ring SiC 24 1 Nut 25 1 Seal 26 1 Pump shaft 27 1 Rotating seal ring carbon 1 Rotating seal ring SiC 28 1 Tubular spring pin 29 1 O ring 47 1 Shroud complete 48 1 Support bar left 49 1 Support bar right 50 4 Nut 51 4 Washer 52 4 Leg 53 4 Screw 54 4 Washer 55 4 Washer 56 4 Nut 57 4 Screw Serv...

Страница 28: ...e drawing includes all items of the pump 7 3 FM OS Centrifugal pump flushed shaft seal 1 4 34 42 11 2 3 9 25 23 10 6 7a 5 8 7b 47 49 57 51 50 52 53 54 55 56 48 3010 0015 45 39 39a 35 32 33 36b 29b 30 37 31 30 29a 36a 40 43 41 44 45 28 ...

Страница 29: ...k 30 3 Washer 31 1 Spacer 32 1 O ring 33 1 Stationary seal ring 34 1 Tubular spring pin 35 1 Seal housing 36a b 2 Rotating seal ring carbon 37 1 Spring 39 4 Screw 39a 4 Washer 40 1 O ring 41 1 O ring 42 1 Pump shaft 43 1 Fastening ring 44 1 Intermediate flange 45 2 Flushing tube 46 1 Assembly mandrel not shown 47 1 Shroud complete 48 1 Support bar left 49 1 Support bar right 50 4 Nut 51 4 Washer 5...

Страница 30: ... 30 ...

Страница 31: ... 31 ...

Страница 32: ...is the responsibility of the user of this document to comply with all applicable intellectual property laws Without limiting any rights related to this document no part of this document may be copied reproduced or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise or for any purpose without the expressed permission of Alfa Laval Corporate AB Alfa Lava...

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