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Dover PSG Mouvex AZ O, Installation Operation & Maintenance

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Dover PSG Mouvex AZ O Installation Operation & Maintenance Download Page 10

10/19

NT 1003-A00 09 18 AZ O  e

5. MONODIR MECHANICAL SEAL

5.1 Operation

The shaft 

501

with the driver 

641

drive seal housing 

612

,

spring 

615,

spring guide 

614

and seal 

613

.

Stationary seal face 

604

is holden in pump body by seal

605

.

Sealing is done :

• on the shaft, by the seal 

613

rotating with it,

• by the surfaces in contact between the rotating seal

housing 

612

and the static stationary seal face 

604

,

• in the bore of the pump body by the seal 

605

tighte-

ned between the stationary seal face 

604

and the

washer 

608

.

Sealing is therefore done as a function of the stationary
seal face condition of these contact surfaces and the
seals 

605

and 

613

.

5.2 Disassembly

Before opening the pump, you must always drain it and
release the pressure it may contain. Make sure that the
isolation valves, if any, are closed or drain the installation
before pulling out the drain plug 

812

and its seal 

848

.

After opening the pump :

• remove screws 

706

and washers 

721

.

• remove the cover 

705

with its seal 

707

.

• release shaft by tapping with a mallet on opposite

shaft end.

• remove the ring 

704

and the washer 

731

. Then, by

tapping on shaft end, drive side, the set : bearing
cage 

701,

bearing 

703

and protection circlip 

733

.

• remove the washer 

608

, the seal 

605

, the stationary

seal face 

604

and the set : seal housing 

612,

seal

613

, guide 

614

, spring 

615

and driver 

641

.

5.3 Reassembly

Check the good condition of the seals 

707

, 

605

and 

613

.

Check the surfaces in contact of the stationary seal face

604 

and the seal housing 

612

are flat and mirror smooth.

Replace all parts on shaft in the reverse order and install
ring 

704

.

Replace shaft with ball bearing and mechanical seal on
the pump, making sure one of the drain vents is turned
downwards.

Install the cover 

705

and its seal 

707

(taking care not to

damage the lip of this seal with the groove of the shaft
keying) and the screws 

706

with their washer 

721

.

WARNING

FAILURE TO RELIEVE SYSTEM
PRESSURE PRIOR TO PERFORMING
PUMP SERVICE OR MAINTENANCE
CAN CAUSE PERSONAL INJURY OR
PROPERTY DAMAGE.

Hazardous pressure 

can cause 

personal injury 

or property damage.

WARNING

DISCONNECTING THE FLUID OR
PRESSURE CONTAINMENT COMPO-
NENTS DURING PUMP OPERATION
CAN CAUSE SERIOUS PERSONAL
INJURY, DEATH OR MAJOR PROPERTY
DAMAGE.

Hazardous pressure 

can cause 

personal injury 

or property damage.

WARNING

IF PUMPING HAZARDOUS OR TOXIC
FLUIDS, THE SYSTEM MUST BE FLUS-
HED PRIOR TO PERFORMING ANY
SERVICE OPERATION.

Hazardous or toxic

fluids can cause 

serious injury.

WARNING

DISCONNECT THE ELECTRICITY
SUPPLY BEFORE ANY MAINTENAN-
CE OPERATION.

Dangerous voltage.

Can cause 

injury and death.

Summary of Contents for PSG Mouvex AZ O

Page 1: ... 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 A 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 ...

Page 2: ...peration 11 6 2 Orientation 11 6 3 Inversion 12 6 4 Adjustment 12 6 5 Obtaining the flow 13 6 6 Energy consumption 13 6 7 Bypass use 13 7 MAINTENANCE 14 7 1 Greasing 14 7 2 Checking of parts 14 8 DRILLED PISTON PUMP 14 9 STORAGE 15 9 1 Short duration 1 month 15 9 2 Long duration 1 month 15 10 SCRAPPING 15 11 TROUBLESHOOTING 16 12 CERTIFICATE OF CONFORMITY 19 Unit without suffix Differential pressu...

Page 3: ... removing pump P Pump plate PAT Support foot pump S Mounting point for probe M6 threaded width max 8 mm Noise level The sound level of a pump is greatly influenced by its condi tions of use Cavitation and pumping products with high gas contents generally increases the sound level Under the following pumping conditions excluding cavitation discharge pressure 5 bar speed of rotation 1500 rpm product...

Page 4: ... side A straight pipe 5 diameters is recommended between the pump flange and any pipe fitting elbow valve The stresses exerted by the piping on the pump can deform the pump parts increase wear misalign the bea rings and even cause parts to break The pipes must be designed to allow thermal expansion and contraction and be firmly secured the use of flexible hoses and expansion loops is recommended W...

Page 5: ...se stress prejudicial to the pump and the drive device and put the coupling out of true thereby causing vibrations noise and prema ture wear Care must be taken so that the chassis is clear of the ground apart from the base plates The chassis is equipped with a ground connection that must be used We recommend leaving an unoccupied space of about 20 cm on either end of the chassis to permit access t...

Page 6: ...the manual supplied with the motor 2 10 Diesel engine 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 is now well known Nevertheless we strongly recommend that you carefully read the technical manuals concerning them 2 11 Belt drive trans...

Page 7: ...rting up the pump Before starting up the pump always ensure that the pumping conditions are correct with the corresponding valves open especially the inlet valve For products requiring heating they must be brought to their pumping temperature before starting the pump 3 5 Shutting down the pump When shutting down the pump we recommend waiting for the pump to stop completely before closing the val v...

Page 8: ...NENTS DURING PUMP OPERATION CAN CAUSE SERIOUS PERSONAL INJURY DEATH OR MAJOR PROPERTY DAMAGE Hazardous pressure can cause personal injury or property damage WARNING IF PUMPING HAZARDOUS OR TOXIC FLUIDS THE SYSTEM MUST BE FLUS HED PRIOR TO PERFORMING ANY SERVICE OPERATION Hazardous or toxic fluids can cause serious injury CAUTION THE PUMP LUBRICANT IS VERY SLIPPE RY AND MAY CAUSE SERIOUS INJURY ANY...

Page 9: ...emove the mechanical seal and the shaft by following the directions MECHANICAL SEAL 4 3 Reassembly Reassembly is done in the reverse order than the dis mantling Take the following precautions Check the condition of the mechanical seal see MECHANICAL SEAL Check the condition of the spring 504 and the piston bearing mini length in the rest 13 5 mm Light load must be applied to the spring in order to...

Page 10: ... remove the washer 608 the seal 605 the stationary seal face 604 and the set seal housing 612 seal 613 guide 614 spring 615 and driver 641 5 3 Reassembly Check the good condition of the seals 707 605 and 613 Check the surfaces in contact of the stationary seal face 604 and the seal housing 612 are flat and mirror smooth Replace all parts on shaft in the reverse order and install ring 704 Replace s...

Page 11: ...ion of operation Consequently it is necessary to check that the pumps direction of operation is correct by verifying that the cap 810 is located on the inlet side The bypass must be reversed if in the wrong direction WARNING FAILURE TO RELIEVE SYSTEM PRESSURE PRIOR TO PERFORMING PUMP SERVICE OR MAINTENANCE CAN CAUSE PERSONAL INJURY OR PROPERTY DAMAGE Hazardous pressure can cause personal injury or...

Page 12: ...seen upon closing the discharge This is how the bypasses of our pump units are adjusted as a function of the infor mation provided by our Technical Services The pumps supplied bare shaft are delivered with a standard bypass setting which needs to be adjusted with the exact working conditions and installation as per the above described procedure WARNING FAILURE TO RELIEVE SYSTEM PRESSURE PRIOR TO P...

Page 13: ... you obtain the required flow make sure that the motor can withstand the increased power due to the overpressure created by closing off the discharge line 6 6 Energy consumption If the energy consumption does not correspond with expectations the reason may be poor adjustment of the bypass valve If consumption is low and you do not get the required flow close the discharge valve and tighten the adj...

Page 14: ...rication of the shaft inlet bearing Use a grease for good quality ball bearings Lubrication must be done every 1 000 hours of operation or at least once a year The quantity of grease to be added must not exceed 5 cm3 For pumps operating at high temperatures in principle from 100 C upwards use a grease with a high drop point If the pump is equipped with a Stofer oiler and when the type of product r...

Page 15: ...be covered in some form of anti corrosion protection The bearing should be well greased If the pump is to be stored for more than the life of the grease this one should be replaced in time to prevent an excessive degradation of its qualities The best storage conditions are inside a building that meets the conditions set out above If inside storage is not possible the materials should be covered to...

Page 16: ...g after checking that the electric motor is suitably protected 2 1 2 The bypass valve is not closed either the plunger has not returned to its initial position or there is dirt on the valve seat 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 press...

Page 17: ... become too elevated due to a change of temperature cf 3 1 3 3 2 2 If the vacuum is low or non existent the reason could be a that 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 internal tightness is out of specification the piston bushings are worn worn piston and cylinder broken ...

Page 18: ...ress on the pump the transmission is pulling on the shaft pulling on the flanges by the piping 8 3 a broken part or foreign body has entered the pump EXCESS POWER CONSUMPTION 9 The most spectacular event occurs when a diesel engine 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 the bypass is assembled back to fron...

Page 19: ...ezogen 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 1 20...

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