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DESMI Pumping Technology A/S 

9

 

 

Tagholm 1 

 

9400 Nørresundby 

– Dänemark 

Tlf. nr.: +45 96 32 81 11 
Fax +45 98 17 54 99 
E-mail: [email protected] 

www.desmi.com

 

 

 

 

 

 

 

6.4 FITTING SHAFT SEAL 
 
Before fitting the seat, clean the recess in the shaft seal cover (bearing housing in S32-25-110N and 
S50-32-135N). When fitting the seat, remove the protective coating, if any, without scratching the 
lapped surface. Dip the outer rubber ring of the seat into soapy water. Now press the seat into place 
with the fingers and check that all parts are correctly imbedded. If it is necessary to use tools for 
assembling, then protect the sliding surface of the seat to prevent it from being scratched or cut. 
Lubricate the inner diameter of the slide ring rubber bellows with soapy water and push it over the 
shaft. The use of a fitting bush as shown on the below assembly drawing is recommended to avoid 
that the rubber bellows is cut. Push the slide ring over the shaft with the hand. If the rubber bellows 
is tight, use a fitting tool and take care that the slide ring is not damaged. 

 
If the carbon ring is not fixed, it is important to check that it is fitted correctly, i.e. the 
chamfered/lapped side is to face the seat. The carbon ring can be held by a little grease. 
When using oil on the shaft, the bellows will settle and seat in about 15 minutes, and until then 
tightness should not be expected. After start, check by viewing the leak hole that there are no leaks. 
 
6.5 FITTING IMPELLER 
Fit the sunk key in the shaft and lead the impeller towards the shoulder of the shaft. Take care that 
the ring at the end of the shaft seal spring locates in the recess of the impeller. Secure the impeller 
with a washer and a nut. 
 
Only S32-25-110N and S50-32-135N: 
Apply Loctite 243 or similar to the thread on the shaft. Screw the impeller towards the shoulder of the 
shaft. Take care that the ring at the end of the shaft seal spring locates in the recess of the impeller. 
Tighten the impeller with 60 Nm torque. 
 
6.6 FITTING GUIDE RING AND GUIDE VANE PIECE (ONLY S32-25-110N) 
Place the guide ring (35) in the recess of the bearing housing. Fit and fasten the guide vane piece on 
the guide ring. Note that the flat part of the inlet neck of the guide vane piece is to face upwards, i.e. 
opposite of the drain passage for the shaft seal in the bearing housing. If the shaft cannot rotate freely, 
dismantle the guide vane piece again, and place a shim (34) between bearing housing and guide ring. 
 
6.7 FITTING BEARING HOUSING AND SHAFT SEAL COVER 
Place the gasket between pump casing and shaft seal cover on the shaft seal cover where it can be 
held with a little grease. Lead bearing housing with shaft seal cover into place and fasten. Note that 
the drain hole for the shaft seal faces downwards. 
 

 

Fitting bush

Содержание Modular S-N Series

Страница 1: ...MI self priming centrifugal pump MODULAR S N DESMI Pumping Technology A S Tagholm l DK 9400 Nørresundby Denmark Tel 45 96 32 81 11 Fax 45 98 17 54 99 E mail desmi desmi com Internet www desmi com Manual T1440 Language English Revision H 11 20 ...

Страница 2: ...G 8 6 2 FITTING SHAFT WITH BEARINGS 8 6 3 FITTING WATER DEFLECTOR 8 6 4 FITTING SHAFT SEAL 9 6 5 FITTING IMPELLER 9 6 6 FITTING GUIDE RING AND GUIDE VANE PIECE ONLY S32 25 110N 9 6 7 FITTING BEARING HOUSING AND SHAFT SEAL COVER 9 6 8 SHAFT 10 7 FROST PROTECTION 10 8 DISMANTLING 10 9 START UP 10 9 1 STARTING 10 10 SYSTEM BALANCING 11 11 INSPECTION AND MAINTENANCE 12 11 1 DRAINING THE PUMP 12 11 2 B...

Страница 3: ...th relief blades to reduce the load on the bearings Relief holes in the impeller ensure circulation of liquid for the shaft seal and prevent overheating of the shaft seal during normal operation The pump is particularly suitable for the pumping of water in connection with f inst cooling of diesel engines as bilge pumps ballast pumps pumps for irrigation washing plants air conditioning cooling syst...

Страница 4: ... supplier R may be the following 01 With electromagnetic clutch 02 Monobloc flange mounted with electric motor 03 With hydraulic motor 04 V belt pulley and disengaging clutch 07 On base plate with petrol or diesel engine or with electric motor 08 Mounted on trolley with petrol or diesel engine or with electric motor 09 With bare shaft end 10 Special tailored according to task Any use of the pump i...

Страница 5: ...1450 1050 1800 270 S80 70 220N 1450 1050 1800 270 S80 70 275N 1450 1050 1800 270 S100 80 175N 1800 1250 2200 470 S100 80 220N 1800 1250 2200 470 S100 80 275N 1800 1250 2200 470 S125 80 220N 3200 1900 3750 950 S125 80 275N 3300 2000 3850 1020 S125 100 220N 3300 2000 3850 1020 In connection with the permissible loads on the flanges the following is to be observed v F zin F zout F 3 2 h F F yout F xo...

Страница 6: ...OCK bush When dimensioning the V belt pulley it is important to follow the rules of the DESMI nomograms for the pump size in question contact DESMI Be careful when fitting the suction line to the pump so that it is absolutely tight as even small leakages may impede the priming When pumping polluted liquids a strainer is necessary The strainer must be equipped with a sieve the passage area of which...

Страница 7: ...RT STORAGE The weights of the pumps in A09 combination are stated in the following table and the pumps are to be lifted as shown Pump Weight kg Pump Weight kg S32 25 110N 21 5 S80 70 275N 86 0 S50 32 135N 22 0 S100 80 175N 79 0 S70 50 175N 42 0 S100 80 220N 92 5 S70 50 220N 58 0 S100 80 275N 107 0 S70 50 275N 72 0 S125 80 220N 116 0 S80 70 175N 53 0 S125 80 275N 122 0 S80 70 220N 59 0 S125 100 220...

Страница 8: ...5 3 DISMANTLING SEAT Press out the seat from behind the shaft seal cover the bearing housing in S32 25 110N and S50 32 135N 5 4 DISMANTLING SHAFT WITH BEARINGS Before dismantling the shaft with bearings remove the sunk key 16 The shaft can now be pulled out of the bearing housing allowing inspection of the bearings 5 5 INSPECTION When the pump has been dismantled check the following parts for wear...

Страница 9: ...ill settle and seat in about 15 minutes and until then tightness should not be expected After start check by viewing the leak hole that there are no leaks 6 5 FITTING IMPELLER Fit the sunk key in the shaft and lead the impeller towards the shoulder of the shaft Take care that the ring at the end of the shaft seal spring locates in the recess of the impeller Secure the impeller with a washer and a ...

Страница 10: ...are of this and take the necessary safety measures If the pump has been pumping hot liquids take great care that it is drained before it is removed from the piping system If the pump has been pumping cold or very hot liquids be aware that touching the pump surface is dangerous Therefore the necessary precautionary measures must be taken 9 START UP A self priming centrifugal pump will not function ...

Страница 11: ... as intended please proceed according to the fault finding list Bear in mind though that the pump was carefully checked and tested at the factory and that the majority of faults stem from the piping system FAULT CAUSE REMEDY The pump does not Prime 1 The pump is not filled with liquid 2 Leaking non return valve in pump 3 Wrong direction of rotation 4 Air is drawn in because of too little liquid or...

Страница 12: ... it if possible Before inspection of a pump without guard check that the pump cannot be started unintentionally The system is to be without pressure and drained of liquid The repairman must be familiar with the type of liquid which has been pumped as well as the safety measures he is to take when handling the liquid 11 1 DRAINING THE PUMP When the piping system has been drained note that there is ...

Страница 13: ...1450 1750 2950 3500 RPM Max Fflow m3 h 1450 1750 2950 3500 RPM Min Pressure mVS 1450 1750 2950 3500 RPM Max Pressure mVS 1450 1750 2950 3500 RPM S32 25 110N 0 2 0 3 0 9 1 4 2 5 3 0 4 5 5 5 6 0 7 0 12 0 13 5 1 7 2 8 8 0 12 5 3 6 5 3 15 0 21 S50 32 135N 0 3 0 5 2 1 3 5 4 0 4 5 8 0 9 0 11 0 13 5 23 27 3 0 4 2 12 0 17 0 6 0 8 7 25 35 S70 50 175N 0 8 1 2 6 0 10 0 8 0 10 0 17 5 20 20 24 45 53 5 6 8 4 19...

Страница 14: ...ones being reached by the upper limbs EN 809 1998 A1 2009 Pumps and pump units for liquids Common safety requirements EN12162 2001 A1 2009 Liquid pumps Safety requirements Procedure for hydrostatic testing EN 60204 1 2006 A1 2009 Safety of machinery Electrical equipment of machines item 4 General requirements Pumps delivered by us connected with prime movers are CE marked and comply with the above...

Страница 15: ...RMATION RELEVANT FOR DISASSEMBLY OR DISPOSAL AT END OF LIFE No damage materials are used in DESMI pumps please refer to DESMI Green Passport can be sent on request contact a DESMI sales office i e common recycling companies can handle the disposal at end of life Alternatively the pump and motor can be returned to DESMI at end of life for safe recycling ...

Страница 16: ...2 25 110N and S50 32 135N are shown on the next pages 1 Pump casing 11 Water deflector 21 Gasket 2 Pipe plug 12 Ring lock 22 Allen screw 3 Pipe plug 13 Ball bearing 23 Suction piece 4 Sealing ring 14 Support disc 24 Allen screw 5 Impeller 15 Ball bearing 25 Non return flap 6 Nut 16 Sunk key 26 Contact ring 7 Spring collar 17 Shaft 27 Gasket 8 Washer 18 Bearing housing 28 Gasket 9 Sunk key 19 Allen...

Страница 17: ...110N Spare parts list for S50 32 135N is shown on the next page 1 Pump casing 18 Bearing housing 29 Allen screw 3 Pipe plug 21 Gasket 30 Ring lock 5 Impeller 22 Allen screw 31 Oil seal ring 10Mech shaft seal 23 Suction piece 32 Reducing bush 11Water deflector 24 Allen screw 33 Gasket 14Support disc 25 Non return flap 34 Shim 15Ball bearing 26 Guide vane piece 35 Guide ring 16Sunk key 27 Contact ri...

Страница 18: ...50 32 135N SPARE PARTS LIST S50 32 135N 1 Pump casing 16 Sunk key 25 Non return flap 3 Pipe plug 17 Shaft 26 Contact ring 5 Impeller 18 Bearing housing 28 Sealing washer 10 Mech shaft seal 21 Gasket 29 O ring 11 Water deflector 22 Allen screw 30 Ring lock 14 Support disc 23 Suction piece 31 Oil seal ring 15 Ball bearing 24 Allen screw 75 Drain plug 76 Relief valve ...

Страница 19: ...4j6 27 8 15 170 200 12 68 S70 50 275N 140 350 50 390 240 225 24j6 27 8 19 170 210 12 75 S80 70 175N 150 5 363 50 295 200 180 24j6 27 8 15 190 220 13 69 S80 70 220N 155 365 50 330 220 190 24j6 27 8 15 190 220 12 70 S80 70 275N 150 360 50 390 250 225 24j6 27 8 19 170 210 12 75 S100 80 175N 175 5 374 50 344 240 200 24j6 27 8 15 220 270 13 72 S100 80 220N 180 376 50 400 280 250 24j6 27 8 19 225 265 15...

Страница 20: ...50 4x18 1 4 BSP 1 2 BSP S80 70 175N 200 273 200 160 80 8x18 185 145 70 4x18 1 4 BSP 3 4 BSP S80 70 220N 230 305 200 160 80 8x18 185 145 70 4x18 1 4 BSP 3 4 BSP S80 70 275N 280 360 200 160 80 8x18 185 145 70 4x18 1 4 BSP 3 4 BSP S100 80 175N 230 319 220 180 100 8x18 200 160 80 8x18 1 4 BSP 3 4 BSP S100 80 220N 265 365 220 180 100 8x18 200 160 80 8x18 1 4 BSP 3 4 BSP S100 80 275N 280 380 220 180 100...

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