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Note that code 2, silicon carbide-on-silicon
carbide, seals are not recommended for
steam-purged applications as the seal faces
can bind together - see Cleaning and
Sterilizing. 

Pumps fitted with single seals require no
special installation but pumps must never be
run completely dry for more than 30
seconds, as this will cause excessive
heating of the seal faces.  Use flushed seals
in pumps that need to run dry.

The 

Flushed Mechanical Seals

fitted to

Hy~Line

and Ultima pumps are run with a

low-pressure liquid flush between the
primary mechanical seal and a lip seal to
form a barrier between the pump and the
atmosphere.  This allows the pump to be
used for applications where the single seal
is unsuitable. 

Flushed seals are used when:

• Pumped fluid changes state in contact

with air, e.g. crystallises, forms a film,
dries out or precipitates solids.  The flush
dissolves and rinses away the small
amount of reside which could build up on
the edges of the seal faces

• Pumped fluid is close to its boiling point

e.g. water over 80°C (175°F).  The
flushing fluid is used to cool the seal
faces.

• Pumped fluid is temperature sensitive and

degrades when heated by the shearing
action of the seal faces.  The flushing fluid
is used to cool the seal faces. 

• Pump must run “dry”, i.e. no liquid in pump

chamber.

• Pump is under high vacuum.

• A low pressure sterile barrier is required.

A low-pressure flushing fluid system
must be installed as follows:-

• Liquid must be compatible with the

pumped fluid; water is the most commonly
used liquid.

• Pressure shall typically be 0.5 bar (7 psi)

gauge.  Maximum of 1.0bar (14.5 psi)
gauge.

• Temperature shall be maximum of 70ºC

(160ºF) for water, less for volatile liquids
(maximum 20ºC (68ºF) below boiling point
of liquid).

• Flow rate shall preferably be 2 to 3

litres/min. (0.5 to 0.75 US gal/min) per
seal.

• Flush fluid should be connected to flow in

at the lowest point on the seal housing
and out at the highest point to vent air
pockets.

• Pipework should be as shown in the

diagram (see figure 4a).

Page 10

Hy~Line

and

Ultima

Lobe Pumps

07/03

Figure 4:

Flushed

Single Seal

Summary of Contents for Hy-Line

Page 1: ...Hy Line and Ultima Lobe Pumps 07 03 Installation Operating Maintenance and Spares Manual Hy Line Rotary Lobe Pump Ultima Rotary Lobe Pump...

Page 2: ...ection 3 LUBRICATION 4 START UP ROUTINE CHECKS 4 01 Start up 4 02 Daily Checks 4 03 Weekly Checks 4 04 Monthly Checks 4 05 Six Monthly Checks 4 06 Annual Checks 5 CLEANING AND STERILIZING 5 01 Cleanin...

Page 3: ...hout the life of the pump If service or repair other than that described in this manual should become necessary contact your supplier for assistance Any pump returned to the supplier for any reason mu...

Page 4: ...uring pump selection and specification these limitations are taken into account and must not be exceeded Every pump is supplied with a Performance Data Sheet which gives details of these limitations T...

Page 5: ...ection 8 before any work is carried out on the pump or parts are ordered The SERIAL NUMBER is unique to each pump Both numbers should be quoted with all queries or orders for spares 1 05 INSPECTION UP...

Page 6: ...uspension but will be damaged by hard particles Take care pumping solids crystals etc Never allow metal parts to enter pump e g weld metal screws tools etc as these will stop the pump leading to damag...

Page 7: ...of the shaft end being careful not to damage the inside of the lip seal on the edges of the keyway in the shaft Rotate the cover to the desired position and re fit It is wise to fit new sealing washe...

Page 8: ...e adhered to See Performance Data Sheet to calculate torque Pump and motor shafts should be accurately aligned in accordance with the coupling manufacturer s instructions Ultima only When providing dr...

Page 9: ...regulations In particular Connect electric motor in accordance with the manufacturer s recommendations All electrical work must be carried out by competent personnel to local safety regulations and co...

Page 10: ...on pump ports Fit expansion joints if necessary to prevent thermal expansion forces being transmitted to pump Ensure all pipe joints are adequately sealed to be a Air tight under vacuum b Liquid tigh...

Page 11: ...the Multi Lip Seal Single O ring Seals utilise a single Viton O ring on each shaft which are working under dynamic conditions This type of seal requires a constant supply of pumped product in order t...

Page 12: ...on the edges of the seal faces Pumped fluid is close to its boiling point e g water over 80 C 175 F The flushing fluid is used to cool the seal faces Pumped fluid is temperature sensitive and degrades...

Page 13: ...tanding the full pressure within the pumped fluid pipe system Double Mechanical Seal with a high pressure liquid flush when The pumped fluid has no lubricating properties and cannot be allowed onto se...

Page 14: ...vent air pockets Where steam is essential great care must be taken with the design of pipework steam traps and controls Steam must be clean filtered and wet i e not superheated The pressure of steam s...

Page 15: ...rotect the system or to provide long term by pass of liquid If this is required then an IN LINE relief valve should be fitted which can by pass the liquid back to the suction vessel during overpressur...

Page 16: ...ommodate a barrier of sterile liquid or steam This offers additional security when no bacteria or contamination can be allowed to enter pump i e an aseptic system see figure 7 Liquid Barriers The flus...

Page 17: ...ressure varies with temperature 3 LUBRICATION Jabsco Hy Line and Ultima pumps have oil lubricated shaft bearings and timing gears Pumps are supplied without oil in the bearing housing Before starting...

Page 18: ...When possible start pump slowly and increase speed gradually Listen for unexpected noises Check for leaks Check that pump gives desired flow rate at normal operating speed Do not continue to run pump...

Page 19: ...Weekly Checks Remove end cover and rotors and inspect seal faces for wear and condition of elastomers Replace as necessary or note for planned maintenance If an end cover relief valve is fitted check...

Page 20: ...The type of cleaning system used depends partly on the level of cleaning required but also on what is to be removed Organic materials such as oils fats proteins need a different system to inorganic m...

Page 21: ...th neutralisers and clean water to remove all traces of cleaning agents Do not pass cold liquid through pump immediately after hot allow temperature to change slowly Failure to observe can result in p...

Page 22: ...a filter may be necessary Typically steam will be at 121 C 250 F and 1 bar 15 psi Soak time to bring the pump up to temperature is typically 20 minutes but this should be established e g using thermoc...

Page 23: ...y be cleaned or replaced before they fail in service All primary fluid contact components of the pump can be inspected and serviced without removing the pump rotor case from the bearing carrier and wi...

Page 24: ...seal damage by contact between shaft ends and seals faces which are located on the back of the rotors a LH72 74 76 Tanker Pumps Lock the pump rotors with a soft spacer A plastic block 180 is provided...

Page 25: ...e 11a c LH72 74 76 Tanker Pumps Lock the rotors using a soft spacer and re fit the three rotor bolts to torque specified in Fig 11a Re fit the O ring 58 to the hygienic cap and lubricate the bore in t...

Page 26: ...orcase and seal housings see section 6 06 c Only remove the rotary seal seat 80 from the back of the rotor 56 57 if you intend to fit a new seal or cup rubber 83 Gently prise out the seat from the rot...

Page 27: ...as seals are precision components Be sure not to damage the joint ring 83 if difficulty is experienced put the joint ring into the rotorcase bore then push the seal seat into the bore Note if the rot...

Page 28: ...he pin in the seal housing and push the face back firmly against the coils springs It should be free to spring backwards and forwards c To fit the seat to the rotor first fit a new cup rubber 83 to th...

Page 29: ...hanical seals 80 are not damaged by the shaft splines or shaft ends Re assembly a Push new lip seals into the seal housings b Fit the O rings into the grooves in the outside diameter of the housings c...

Page 30: ...mbly a To re assemble place O ring 93 in double seal housing 95 lubricate outside of static seat with a suitable lubricant compatible with the barrier fluid Align slots in seal face with dogs of drive...

Page 31: ...ter edge of the drive plate locate on the 3 pins in the housing Drive plate should be assembled with drive dog side last ie opposing direction to first drive plate b For flushed or double seals positi...

Page 32: ...that the flushing system if fitted is switched off Removal a Remove the rotor retaining screws 59 being careful not to lose the O rings 58 Withdraw the rotors from their shafts The rotor has a small...

Page 33: ...exagon socket screws 52 holding the rotor case 51 to the bearing carrier 1 Note that the rotor case is dowelled and can only be re fitted one way round Secure the pump onto a workbench or baseplate be...

Page 34: ...need to be done with scissors prior to fitment LH32 and LH34 shims are not split f Fit the shims and retain them with the O ring 31 No O ring on LH32 and LH34 models g Refit rotors and tighten retaini...

Page 35: ...seat onto the end cover with the O ring towards the end cover ie the conical face uppermost Position the 2 screw holes in the valve seat over the corresponding threaded holes in the end cover Ensure...

Page 36: ...5 THERMAL JACKET ROTOR CASE Ensure that the liquid feed to the jackets is switched off before attempting to service it a Dismantle the jackets from the rotor case 51 by removing the nuts 153 from the...

Page 37: ...ontained within the appropriate Repair Kit k in addition to any new gears 6 or bearings 4 5 required which should be purchased before commencing 6 17 GEARBOX SHAFTS GEARS BEARINGS If the shafts are to...

Page 38: ...ft side to side or axially new bearings must be fitted see section 6 17 and correctly pre loaded Assembly of the shafts is as follows Safety Bearings inner races require heating to 110 C 230 F Protect...

Page 39: ...ceived Bearing nut 8a for LH32 and LH34 models g Repeat c to f for drive shaft Note when fitting the second gear align gear timing marks See figure 24 DO NOT fit gear 6 on LH32 and LH34 models h Check...

Page 40: ...d the oil drain outlet is at the lowest point and sealed with a suitable thread sealant l Re fit seal housings if removed rotorcase seals rotors and end cover as described in section 6 Remember to che...

Page 41: ...07 03 Page 39 Hy Line and Ultima Lobe Pumps 7 00 MODEL NUMBER BUILD CODE...

Page 42: ...ODEL BUILD CODE on page 36 to identify the pump specification 3 Refer to the exploded view of the pump pages 40 41 and the sectional views of the options pages 42 43 in order to ascertain the parts re...

Page 43: ...07 03 Page 41 Hy Line and Ultima Lobe Pumps 8 01 PARTS LIST...

Page 44: ...Page 42 Hy Line and Ultima Lobe Pumps 07 03 8 01 PARTS LIST CONTENTS OF KITS...

Page 45: ...Page 43 Hy Line and Ultima Lobe Pumps 07 03 8 02 Hy Line EXPLODED DIAGRAM...

Page 46: ...07 03 Page 44 Hy Line and Ultima Lobe Pumps 8 03 Ultima EXPLODED DIAGRAM...

Page 47: ...07 03 Page 45 Hy Line and Ultima Lobe Pumps 8 04 Hy Line 3 Size SECTIONAL VIEW...

Page 48: ...Lobe Pumps Double Mechanical Seal Flushed Mechanical Seal Single Mechanical Seal Double O ring Seal Single O ring Seal Hy Line 3 Size Single Mechanical Seal Hy Line 3 Size Flushed Mechanical Seal 8 0...

Page 49: ...07 03 Page 47 Hy Line and Ultima Lobe Pumps End Cover Relief Valve End Cover Barrier 8 05 OPTIONS EXTRAS SECTIONAL VIEWS Multi Lip Seal...

Page 50: ...07 03 Page 48 Hy Line and Ultima Lobe Pumps Thermal Jacket Pump Head Thermal Jacket Rotor Case Thermal Jacket End Cover 8 05 OPTIONS EXTRAS SECTIONAL VIEWS...

Page 51: ...07 03 Page 49 Hy Line and Ultima Lobe Pumps...

Page 52: ...9 859 1254 Fax 44 0 1992 467 132 Fax 49 0 40 53 53 73 11 Warranty All products of the company are sold and all services of the company are offered subject to the company s warranty and terms and condi...

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