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Dover PSG Mouvex P BI Series, Установка - Использование - Обслуживание, Страница: 39 / 45

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9.3.1 Operation of a double mechanical shaft seal

The shaft 

501

drives the rotating parts 

697

by means of

set screws 

617

. The fixed counterparts 

604

are integral,

one with the shaft seal holder 

601

by means of the seal

605

and the retainer 

627

and the other with the front

cover 

401a

via the seal 

605

and retainer 

627

.

The circulation of a liquid (at a pressure higher than that
between the two shaft seals) allows contact between the
pumped liquid and the air to be avoided and prevents
the pumped liquid leaking into the interior (this is called
a barrier liquid and is used where liquids could crystallize
in contact with air or in the case of dangerous liquids).

THE SEALING IS ACHIEVED :

• On the shaft by the ring seals 

613

of the rotating

parts 

697

.

• By the contact surfaces between the rotating parts

697

and the fixed counterparts 

604

.

• Between the fixed counterpart 

604

and the shaft seal

holder 

601

by the seal 

605

.

• Between the fixed counterpart 

604

and the insert 

603

via the ring seal 

605

.

• Between the insert 

603

and the strainer 

725

via the

ring seal 

602

.

• Between the shaft seal holder 

601

and the strainer

725

via the ring seal 

602

.

Fluid tightness therefore depends on the condition of the
friction faces and ring seals.

CLEANING OUT SHAFT SEALS :

• Two threaded G ¼’’ ports are provided for this purpose,

so as to avoid air pockets in the strainer, the liquid
enters via the lower port and exits via the upper port.

• To ensure that the double shaft seal unit will work pro-

perly, the flushing liquid should be pressurized to a
level higher than that between the seals.

REASONS FOR LEAKING SHAFT SEAL :

• Seal damaged during assembly (scratches on friction

faces, etc.).

• Seal unsuitable for the liquids it contacts (chemical attack

or mechanical damage to seals and counterparts).

• Normal shaft seal wear.

9.3.2 Replacing a double mechanical shaft seal

Before undertaking disassembly, make sure that the pump
has been drained, and take the necessary precautions
to prevent it from starting up. The pump must not start up,
even accidentally.

Uncouple the pump by removing the coupling sleeve.

Remove the pump mounting screws.

Place it on a workbench or on a flat surface free from obs-
tructions.

Dismantling :

• Remove the shaft key 

508

.

• Carefully clean the end of the shaft with emery paper

no. 320 to remove any traces of paint, oxidation, burrs,
etc.

• Unscrew the 4 screws 

723

.

• Remove the cover 

705

taking care not to damage the

lip seal 

707

.

• Remove the circlip 

537

.

• Remove the washer 

731

.

• Remove the bearing 

703

using the extractor : position

the claws behind the bearing, sliding them into the ope-
nings in the housing 

725

and pressing against the shaft

end 

501

.

• Remove the second washer

731

.

• Unscrew the 3 screws 

726

(4 screws in the case of jac-

ket versions P40 - P60 - P100).

• Slide the strainer assembly 

725

along the shaft 

501

taking care not to damage the lip seal

716

or the fixed

counterpart 

604

(for jacket versions P40 - P60 - P100,

the shaft seal holder 

601

is directly attached to the

front cover 

401a.

The strainer 

725

should be removed

with just its seals).

• Unscrew the 2 screws 

729

and their square nuts 

730

.

• Remove the shaft seal holder

601

.

• Remove the remaining counterpart 

604

and seal 

605

on the shaft seal holder 

601

.

• Undo the bolt on the shaft 

607

keeping the rotating part

in place 

697

(for jacket version P40 - P60 - P100 : uns-

crew the plugs 

651

on the front cover 

401a

to get

access to the screw 

617

, turn the shaft 

501

slowly to

align them).

• Remove the rotating parts

697

by sliding them along

the shaft 

501

(for jacket version P40 - P60 - P100 :

remove the jacket

622 

and rotating parts 

697,

fixed

counterpart

604 

from front cover

401a 

by sliding them

along the shaft 

501

).

• Remove the remaining fixed counterpart 

604

and seal

605 

on the pump (the counterpart

604 

and seal 

605

are

to be removed from the insert 

603,

for jacket version

P40 - P60 - P100 : unscrew the plugs 

651

on the front

cover 

401a

to get access to the screw 

617

, turn the

shaft 

501

slowly to align them).

39/45

NT 1008-D00 08 18 P BI series  e

9. SHAFT SEAL (continued)

Содержание PSG Mouvex P BI Series

Страница 1: ... Z I La Plaine des Isles F 89000 AUXERRE FRANCE Tel 33 0 3 86 49 86 30 Fax 33 0 3 86 49 87 17 contact mouvex com www mouvex com WARRANTY P Series pumps are covered 24 months by warranty within the limits mentioned in our General Sales Conditions In case of a use other than that mentioned in the Instructions manual and without preliminary agreement of MOUVEX warranty will be canceled ...

Страница 2: ...pass operation 29 8 2 Bypass orientation 29 8 3 Bypass inversion 29 8 4 Bypass adjustment 29 8 5 Obtaining the flow 30 8 6 Energy consumption 30 8 7 Replacing the spring 30 9 SHAFT SEAL 31 9 1 Single mechanical shaft seal 31 9 2 Remounting a single mechanical shaft seal with grease container 35 9 3 Double mechanical shaft seal 36 10 MAINTENANCE 41 10 1 Lubrication of the bearing 41 10 2 Checking t...

Страница 3: ...t cover P Pump plate PA ATEX plate 4 holes Ø 18 at 90 PN16 4 holes Ø 14 4 holes Ø 18 at 90 on Ø 145 P15 P25 BI Single bypass P15 P25 BI Stirrup AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max Ø 122 Ø 185 18 ...

Страница 4: ... at 90 PN16 4 holes Ø 14 Weight 45 kg P15 P25 BI Jacket Stirrup AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover K Reheating jacket G3 4 port P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max 4 holes Ø 18 at 90 on Ø 145 4 holes Ø 14 Weight 51 kg P15 P25 BI Jacket Single bypass Ø 122 Ø 185 18 Ø 122 Ø 185 ...

Страница 5: ...equired for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max 4 holes Ø 14 Weight 65 kg 8 holes Ø 18 at 45 on Ø 160 P40 BI Single bypass Ø 200 Ø 138 22 4 holes Ø 14 8 holes Ø 18 at 45 PN16 Weight 52 kg J Space required for removing front cover P Pump plate PA ATEX plate P40 BI Stirrup ...

Страница 6: ...es Ø 18 at 45 PN16 4 holes Ø 14 Weight 64 kg P40 BI Jacket Stirrup 4 holes Ø 14 8 holes Ø 18 at 45 on Ø 160 Weight 70 kg P40 BI Double bypass AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max Ø 200 Ø 138 22 2 sensors on double bypass 1 on each plug ...

Страница 7: ...ize 8 mm max Weight 76 kg 8 holes Ø 18 at 45 on Ø 160 4 holes Ø 14 Ø 200 Ø 138 22 P40 BI Jacket Double bypass AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover K Reheating jacket G3 4 port P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max 4 holes Ø 14 Weight 68 kg 8 holes Ø 18 at 45 on Ø 160 Ø 200 Ø 138 22 P40 BI Jacket Single bypa...

Страница 8: ...equired for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max 4 holes Ø 14 8 holes Ø 18 at 45 on Ø 180 Weight 85 kg Ø 220 Ø 158 22 P60 BI Single bypass 4 holes Ø 14 8 holes Ø 18 at 45 PN16 J Space required for removing front cover P Pump plate PA ATEX plate Weight 79 kg P60 BI Stirrup ...

Страница 9: ...es Ø 14 8 holes Ø 18 at 45 PN16 Weight 82 kg P60 BI Jacket Stirrup 8 holes Ø 18 at 45 on Ø 180 Weight 88 kg 4 holes Ø 14 AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max Ø 220 Ø 158 22 P60 BI Double bypass 2 sensors on double bypass 1 on each plug ...

Страница 10: ...front cover L Reheating jacket G3 4 port P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max Weight 87 kg 8 holes Ø 18 at 45 on Ø 180 4 holes Ø 14 Ø 220 Ø 158 22 P60 BI Jacket Single bypass AJ Space required for removing cap F Bypass adjustment J Space required for removing front cover L Reheating jacket G3 4 port P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm ...

Страница 11: ...uired for removing front cover P Pump plate PA ATEX plate S Inserting M6 sensor Thread size 8 mm max 4 holes Ø 18 8 holes Ø 18 at 45 on Ø 210 Weight 175 kg 24 Ø 188 Ø 250 P100 BI Single bypass J Space required for removing front cover P Pump plate PA ATEX plate Weight 161 kg P100 BI Stirrup 8 holes Ø 18 at 45 PN16 4 holes Ø 18 ...

Страница 12: ...ing cir cuit should always be determined so as to reduce the height and length of the piping as much as possible Wherever possible siphons and reverse slopes should be avoided in the inlet piping Particular care needs to be taken with the sealing on the inlet side to prevent air entering Pipe elbows must always have a large radius more than 3 times the diameter of the pipes and must not be mounted...

Страница 13: ...function of the ope rating direction of the pump see BYPASS It is also possible to order the following options Bypass clamp the pump then has no other integrated safety device In that case it is strongly recommended to install a pressure switch to limit any overpressure Double bypass Here the pump is fitted with an inte grated safety device to protect the system in both directions of operation If ...

Страница 14: ...tlet will be on the lower opening If using liquid the inlet will be on the lower opening and outlet will be on the upper opening Draining the product when hot could cause serious injuries or damage 2 9 Heat insulation Take care of keeping outboard bearing holder and bea ring outside insulation to ensure sufficient bearing cooling Coupling guard For any application with a pumped product temperature...

Страница 15: ...eduction gearbox pump shafts The motor and pump shafts are accurately aligned at the factory before dispatch but they should be checked carefully when received at the site and realigned if necessary To align the coupling and the shaft use a straight edge to check the concentricity and thickness gauges for the angular misalignment The 3 figures below show the procedure in detail and the admissible ...

Страница 16: ...he motor 2 13 Diesel engines drive Do not forget that these engines are not reversible It is therefore vital to carefully check the inlet and outlet sides of the pump before connecting the pump unit to the piping The use of diesel engines drive is now well known Nevertheless we strongly recommend that you carefully read the technical manuals concerning them WARNING DISCONNECT THE ELECTRICITYSUPPLY...

Страница 17: ...hed for the MOUVEX P BI series pump in good conditions without the drive is less than P15 P25 74 dB A P40 P60 76 dB A P100 78 dB A 3 4 Starting up the pump Before starting the pump make sure that the following conditions are met The circuit should be in one of its pumping configu rations with the appropriate valves open especially on the intake side For products requiring heating they must be brou...

Страница 18: ...and bad wea ther This protection should also prevent condensation It is recommended to turn the pump by hand every two months to distribute the lubricant around the interior Items should then be placed where there is no risk of damage if they are moved slightly by vibrations 3 7 3 Restarting Follow the standard start up procedure for the pump motor driven pump as well as the instructions below Tur...

Страница 19: ... cleaned up WARNING BE CAREFUL WITH THE WEIGHT OF THE PARTS WHEN THEY ARE BEING REMOVED The weight ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEMPERATURE LIABLE TO CAUSE INJURY OR SEVERE DAMAGE Excessive temperature can cause injury or severe damage WARNING TAKE ALL NECESSARY MEASURES TO RENDER ANY START UP EVEN AC...

Страница 20: ...ile parts susceptible to shock Unscrew the 3 screws 726 Remove the cover 712 and its seal 714 Check the seals 403 and 714 Check the bushing 407 inside the front cover 401 see MAINTENANCE 5 2 Checking the vanes Remove a vane 317 situated in an horizontal plane Check it for wear see MAINTENANCE In the case of abnormal wear check the state of the body and front cover faces Replace the vane with a new...

Страница 21: ...s necessary to replace the wearing disk 422 to remove the old disk it may be necessary to break it Clean its seating Take care with the positioning of the disk The 3 diameter 4 holes must be opposite the 2 circulation holes of the cover and the pin 423 P15 P25 P40 only In this assembly operation check and replace as necessary the seal 403 and fit it with a suitable lubri cant Orient the front cove...

Страница 22: ...S INJURY ANY SPILLS MUST BE CLEANED UP Slippery lubricant Spills should be cleaned up WARNING BE CAREFUL WITH THE WEIGHT OF THE PARTS WHEN THEY ARE BEING REMOVED The weight ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEMPERATURE LIABLE TO CAUSE INJURY OR SEVERE DAMAGE Excessive temperature can cause injury or severe...

Страница 23: ...n a bench remove the straps and the vanes Check the seal 403 6 2 Dismantling the vanes and pushrods Place the front cover 401 and rotor 301 assembly on a bench Remove the straps and the vanes 317 Pull out the pushrods 318 by pushing them if necessary with a screwdriver Check the pushrods 318 for wear see MAINTENANCE and change them as necessary Pull out the rotor 301 Remove the keyways 536 Check t...

Страница 24: ...A The side of the ring must be offset by 0 1 mm relative to the cover disk 422 Fit the front cover 401 on the strainer 725 If there is a double shaft seal index the seal insert and the front cover Tighten the 3 screws 726 6 4 Reassembly the vanes and pushrods Position the shaft 501 vertically with the front cover 401 facing down Proceed as necessary to replace the wearing disk 422 to remove the ol...

Страница 25: ...ted in the right direction see detail A and check that they slide freely Hold them in place using suitable straps elastic bra celets 6 5 Closing the drive side base Insert this assembly into the body 101 removing the straps at an opportune moment version with pushrods only Orientate the front cover 401 pin 423 to the vertical fix it to the pump body See Détail A Detail A Elastic ...

Страница 26: ... ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEMPERATURE LIABLE TO CAUSE INJURY OR SEVERE DAMAGE Excessive temperature can cause injury or severe damage WARNING TAKE ALL NECESSARY MEASURES TO RENDER ANY START UP EVEN ACCIDENTAL OF THE PUMP DURING THE WORK IMPOSSIBLE Any unforeseen start up can cause serious injuries...

Страница 27: ...731 is pressed against the shoulder of the shaft 501 Couple the balls bearing 703 on to the shaft by hand see GREASING OF THE BALL BEARING Push it on with a sleeve until it comes to bear against the washer 731 In no case must the balls bearing be pushed on to the shaft without support for the shaft 501 FAILURE TO FOLLOW THIS PROCEDURE CAN SERIOUS LY DAMAGE THE INTERIOR OF THE PUMP Place a second w...

Страница 28: ...OVED The weight ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEMPERATURE LIABLE TO CAUSE INJURY OR SEVERE DAMAGE Excessive temperature can cause injury or severe damage WARNING TAKE ALL NECESSARY MEASURES TO RENDER ANY START UP EVEN ACCIDENTAL OF THE PUMP DURING THE WORK IMPOSSIBLE Any unforeseen start up can cause s...

Страница 29: ... only protects the pump in one direc tion of operation Consequently it is necessary to check that the pump s direction of operation is correct by veri fying that the cap 827 is located on the inlet side The bypass must be reversed if in the wrong direction 8 3 Bypass inversion Loosen the 2 screws 859 Remove the bypass Check the seals 858 and change them as necessary Turn the bypass through 180 Scr...

Страница 30: ...cessary precautions to prevent it from starting up The pump must not start up even accidentally Disassembly Loosen the 2 screws 859 Lift off the bypass and place it on a bench or flat surface free from obstructions Set the bypass pressure to the minimum see BYPASS ADJUSTMENT Keep the bypass vertical during the rest of the process Slowly loosen the screws 856 THE SPRING IS ALWAYS UNDER SLIGHT TENSI...

Страница 31: ... PUMP LUBRICANT IS VERY SLIPPE RY AND MAY CAUSE SERIOUS INJURY ANY SPILLS MUST BE CLEANED UP Slippery lubricant Spills should be cleaned up WARNING BE CAREFUL WITH THE WEIGHT OF THE PARTS WHEN THEY ARE BEING REMOVED The weight ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEMPERATURE LIABLE TO CAUSE INJURY OR SEVERE D...

Страница 32: ...32 45 NT 1008 D00 08 18 P BI series e 9 SHAFT SEAL continued P15 P25 P40 P60 PUMPS P100 PUMPS 9 1 Single mechanical shaft seal L1K X L L1K X L ...

Страница 33: ...of the shaft with emery paper no 320 to remove any traces of paint oxidation burrs etc Unscrew the 4 screws 723 Remove the cover 705 without damaging the seal 707 Remove the circlips 537 Remove the washer 731 Using the bearing puller remove the bearing 703 position the claws behind the bearing sliding them into the openings in the housing 725 and pressing against the shaft end 501 Remove the secon...

Страница 34: ...ront cover 401a and turning the shaft 501 for jacket versions P40 P60 P100 Insert the shaft seal holder assembly 601 and the counterpart 604 into the strainer 725 be careful not to bump the edge of the shaft seal counterpart 604 Tighten the 2 screws 729 and nuts 730 on the strainer 725 Slide the strainer assembly 725 onto the shaft 501 until it reaches the front cover 401a be careful with the fric...

Страница 35: ...the screws 729 and nuts slightly 730 Follow step 12 in REPLACING A SINGLE MECHANICAL SHAFT SEAL Reassembly then Fit the lubricator 644 and breather 643 Unscrew the 2 screws 729 and push the cover 645 out ward Using a grease gun fill the interior of the shaft seal hol der 601 and the cover 645 with grease driving out as much air as possible then tighten the 2 screws 729 Use the lubricator to fill t...

Страница 36: ...sonal injury or property damage CAUTION THE PUMP LUBRICANT IS VERY SLIPPE RY AND MAY CAUSE SERIOUS INJURY ANY SPILLS MUST BE CLEANED UP Slippery lubricant Spills should be cleaned up WARNING BE CAREFUL WITH THE WEIGHT OF THE PARTS WHEN THEY ARE BEING REMOVED The weight ot the parts can be dangerous and may provoke bodily injuries or material damages CAUTION THE SURFACES OF THE PUMP CAN BE AT A TEM...

Страница 37: ... 1008 D00 08 18 P BI series e 9 SHAFT SEAL continued P15 P25 PUMPS P40 P60 PUMPS 1 Slope of standard thread lock Loctite 243 2 Slope of standard thread lock Loctite 241 Loctite is a registered trademark A 1 A 2 ...

Страница 38: ...38 45 NT 1008 D00 08 18 P BI series e 9 SHAFT SEAL continued P100 PUMPS 1 Slope of standard thread lock Loctite 243 Loctite is a registered trademark B 1 A C ...

Страница 39: ...has been drained and take the necessary precautions to prevent it from starting up The pump must not start up even accidentally Uncouple the pump by removing the coupling sleeve Remove the pump mounting screws Place it on a workbench or on a flat surface free from obs tructions Dismantling Remove the shaft key 508 Carefully clean the end of the shaft with emery paper no 320 to remove any traces of...

Страница 40: ...the counterpart Insert the shaft seal holder 601 and seal 602 in the strainer 725 be careful not to bump the edge of the counterpart 604 of the shaft seal Tighten the 2 screws 729 and their nuts 730 Slide the strainer 725 onto the shaft 501 until it contacts the front cover 401a Tighten the 3 screws 726 Position the washer 731 against the shoulder of the shaft 501 Fit the bearing 703 on the shaft ...

Страница 41: ... Vanes Pushrods 10 3 Checking the condition of friction bushings We advise checking the condition of the friction bushings at the same intervals as the vanes and pushrods Replacement of the bushings should be scheduled if a bushing shows large scratches or if it is more than 1 mm out of oval Bushings 10 4 Mechanical seal Mechanical shaft seals should be replaced if there are leaks from the contact...

Страница 42: ... screw or replace the spring after checking that the electric motor is suitably protected 2 1 2 The bypass valve is not closed check whether the seat is contaminated 2 1 3 The pump is worn this will also affect the suction capacity of the pump cf 3 2 2 c 2 2 If the pressure complies with the equipment data pump speed and motor output it is possible that 2 2 1 The pressure required for the given in...

Страница 43: ...he cause a air must be entering upstream of the pump isolating valve b the vapor tension of the liquid is to high or has become so as a result of a change in temperature cf 3 1 3 3 2 2 If the vacuum is low or zero this may be because a the bypass valve is not closing properly due to dirt on the valve seat b air is entering the pump check the front cover seals flanges etc c the pump is worn and the...

Страница 44: ...ably protected 8 2 abnormal stress on the pump the transmission is pulling on the shaft pulling on the flanges by the piping 8 3 broken material or a foreign body in the pump EXCESS POWER CONSUMPTION 9 The most spectacular event occurs when a heat motor stalls or the power to an electric motor is shut off 9 1 If this incident occurs when closing the discharge line the cause may be a bypass fitted ...

Страница 45: ...en bezogen auf mechanische und elektrische Risiken die für rotierende Maschinen gelten NF EN 809 2009 NF EN 1672 2 2009 NF EN ISO 13857 2008 NF EN 12162 2009 ATEX Richtlinie 2014 34 EU 26 Feb 2014 wie umgesetzt im nationalen Recht in Bezug auf Ausrüstungen für den Einsatz in explosionsgefährdeter Atmosphäre Die Konformität hat Geltung durch Anwendung folgender Normen NF EN 1127 1 1997 NF EN 13463 ...

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