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Series SCK,  Size 25-25-100 

Page 10

 

 
 

9220-003-en 

Revision  14 

TM 10272

 

Edition  01/2021 

Product description 

The  housing  dimensions,  nominal  ratings  and  tech-
nical  requirements  of  the  pump  series  SCK  corre-
spond  to  ISO  2858  /  DIN  EN  22858  /  DIN  ISO  5199. 
The  technical  requirements  of  the  VDMA  24279  are 
satisfied. 

The sectional drawing shows the design of the pump. 
See 

Section 9.2 and 9.3

Additional  information  for  the  pump  is  provided  in  the 
brochure. 

All components which come into contact with the  me-
dium are either plastic-lined or made of other resistant 
materials, e.g. silicon carbide. 

The pump consists of the assemblies: 
Housing,  lantern/back  plate,  impeller,  shaft  sleeve, 
bearing  pedestal,  shaft  gasket  and  mechanical  seal 
(separate manual). 

4.1  Housing 

The  metallic shell  gives the plastic lining of the hous-
ing 

100

 the necessary stability. 

Optionally, the housing can be fitted with a drain (see 

Section  5.4.6

)  or  heating.  This  is  shown  in  the  data 

sheet or in a separate technical document. 

4.2  Lantern with back plate 

The  replaceable  back  plate 

161

  consists  of  the  back 

plate  insert 

168

,  a  two-piece  ring 

501

  and  circlip 

932/4

.  These  parts  can  also  be  replaced  by  the  cus-

tomer. 

The back plate insert 

168

 is held in the lantern 

344

 by 

a  2-piece  ring 

501

.  A  circlip 

932/4

  holds  the  2-

piece ring together. See 

Fig. 2

.  

 

 

Fig. 1 

 

4.3  Impeller 

For  strength  reasons  the  impeller 

230

  has  a  metallic 

core inside with which is it screwed onto the shaft 

210

A  locking  unit 

930/1

  is  installed  between  the  impeller 

and the shaft as an anti-torsion insert.  

4.4  Shaft sleeve 

To protect the shaft 

210

 against corrosion, the section 

between the impeller and the shaft gasket is protected 
with  a  shaft  sleeve 

524

  made  of  a  hard,  corrosion-

resistant material. 

A plastic lining is provided at the bearing points in the 
shaft sleeve made of non-metallic materials in order to 
permit a safe transition to the metallic shaft. 

4.5  Bearing pedestal 

Long life grease lubrication 
The bearing 

321/2

 on the motor side is designed as a 

fixed  bearing and that on the pump side as  a floating 
bearing 

321/1

A rear bearing cover 

361

 is installed on the motor side 

as  additional  protection.  Grease  is  provided  between 
the  rear  bearing  cover  and  the  bearing  as  corrosion 
protection. An additional seal can be installed. 

Oil bath lubrication 
The bearing pedestal 

330

 contains radial ball bearings 

321/1, 321/2

, which are lubricated by an oil bath. The 

fixed  bearing  is  arranged  on  the  motor  side,  the 
floating bearing on the pump side. 
A rear bearing cover 

361

, which accomodates a rotary 

shaft seal 

421/1

 and an O-ring 

412/1

 for oil sealing, is 

installed on the motor side. 

 

A  so-called  spring  bushing 

546

  is  installed  on  the 

pump side.  

It has several functions: 

Any  medium  emerging  from  the  mechanical  seal  is 

kept away from the bearing. 

Cup  springs 

950/1

,  which  press  the  shaft  sleeve 

524

 

against  the  impeller 

230

  are  inserted  in  order  to 

seal at that location. 

It serves as a running surface when an additional seal 

ring is installed. 

4.6  Mechanical seals 

Designs: 

Single mechanical seal external 

Double mechanical seal to DIN EN 12756 

 

See  the  relevant  installation  and  operating 
manuals  of  Richter  or  the  mechanical  seal 
manufacturer. 

Summary of Contents for SCK Series

Page 1: ...efore transport installation operation and maintenance Subject to change without notice Reproduction is generally permitted with indication of the source Richter Chemie Technik GmbH 9220 003 en Revisi...

Page 2: ...pe fittings 12 5 6 Monitoring facilities 13 5 7 Drive 13 5 8 Coupling 13 5 9 Final check 13 5 10 Coupling guard 13 5 11 Electric connection 13 6 Commissioning Shutdown 14 6 1 Initial commissioning 14...

Page 3: ...hemie Technik GmbH Otto Schott Str 2 D 47906 Kempen Telephone 49 0 2152 146 0 Fax 49 0 2152 146 190 E Mail richter info idexcorp com Internet http www richter ct com Authorised person acc to machinery...

Page 4: ...ME Nm in lbs 25 1 4 x 8 70 1 2 Type plate ATEX and housing markings The stainless steel type plate is undetachably riveted to the housing If the operator attaches his identification it must be ensured...

Page 5: ...he pumps is only possible with pumps with grease lubricated rolling bearings or roll ing bearings with oil mist lubrication Please consult the manufacturer The observance of the specified physical lim...

Page 6: ...is only guaranteed if it is used properly in accordance with Section 2 1 of this operating manual The operating limits specified in the data sheet must under no circumstances be exceeded 2 6 Special r...

Page 7: ...d and the discharge side shut off element slightly opened Start up against a closed check valve is also possible The discharge side shut off element is to be regulated to the operating design point di...

Page 8: ...ervance of the temperature class T4 with oil bath lubrication is not possible with the standard shaft seal A labirinth seal must be used instead of the shaft seal for the temperature class T4 and with...

Page 9: ...orage conservation agents on machined component surfaces and packing with a desiccant may be necessary 3 1 Return consignments Pumps which have conveyed aggressive or toxic me dia must be well flushed...

Page 10: ...er and the shaft as an anti torsion insert 4 4 Shaft sleeve To protect the shaft 210 against corrosion the section between the impeller and the shaft gasket is protected with a shaft sleeve 524 made o...

Page 11: ...d in all directions using a spirit level on shaft discharge nozzle admissible position deviation max 0 08 in ft 0 2 mm m See installation drawing Use supports in the direct vicinity of the bolts found...

Page 12: ...internals up stream of the pump be horizontal a low point can of course be located upstream of these internals From here the pipe is then laid with an upward gradient to the pump so that the gas bubb...

Page 13: ...face on the motor shaft Observe the operating manual of the coupling manu facturer A coupling with a valid ATEX certificate is to be used if deployed in zone 1 and 2 Regulations exist e g for the fol...

Page 14: ...cannot be vented into the discharge line e g a drop in pressure in this line is not permitted vent ing must be performed upstream of the discharge valve Monitor the venting operation until no air but...

Page 15: ...g electrostatic and induced charges mechanical and electric sparks can result from these inadmissible modes of operation their occurrence can only be prevented by adhering to the intended use Pump is...

Page 16: ...place the bearings as a precaution See Fig 10 Fig 6 7 2 2 Oil bath lubrication With an expected bearing temperature of about 70 C we recommend a mineral oil with the following charac teristics Viscosi...

Page 17: ...unit If the housing 100 remains in the plant leave the housing gasket 401 in the centering to protect the housing sealing surface Dismantling can be checked using the sectional drawing in Section 9 2...

Page 18: ...Use original spare parts See also Section 2 4 Do not use any defective parts The recommendations of the mechanical seal manu facturer are to be observed Close tolerance areas screws and cup springs ar...

Page 19: ...the plastic container shut and insert it into the holder If the oil level still drops too far add oil to the plas tic container again Fig 11 7 11 Tests The pumps are tested with water at the manufact...

Page 20: ...pipe resistances too high Is the viscosity too high Is the direction of rotation correct Is the speed too low or the impeller diameter too small Are pump parts worn Gas in the medium Flow rate too hi...

Page 21: ...05 shoulder ring 524 shaft sleeve 501 ring 2 piece 505 shoulder ring 524 shaft sleeve 546 spring bushing 554 x washer 557 x contact disc 901 x hex screw 902 1 stud screw 914 5 hex socket screw 920 x h...

Page 22: ...Series SCK Size 25 25 100 Page 22 9220 003 en Revision 14 TM 10272 Edition 01 2021 9 2 Sectional drawing long life grease lubrication Illustration without mechanical seal...

Page 23: ...Series SCK Size 25 25 100 Page 23 9220 003 en Revision 14 TM 10272 Edition 01 2021 9 3 Sectional drawing SCK oil bath lubrication Illustration without mechanical seal...

Page 24: ...eller is turned into the position you want by turning the impeller wrench clockwise or counterclockwise 10 2 Clamping device for SCK single mechanical seals Pump size Ident No SCK Gruppe 0 WSH 25 mm 9...

Page 25: ...e nderungen vorbehalten Nicht ma st blich Ma e nur mit Unterschrift verbindlich CHEMIENORMPUMPEN CHEMICAL PROCESS PUMPS POMPE POUR L INDUSTRIE CHIMIQUE Baureihe Series S rie Ausf hrung Gleitringdichtu...

Page 26: ...ma st blich Ma e nur mit Unterschrift verbindlich CHEMIENORMPUMPEN CHEMICAL PROCESS PUMPS POMPE POUR L INDUSTRIE CHIMIQUE Baureihe Series S rie Ausf hrung Gleitringdichtungspumpen Design Mechanical se...

Page 27: ...d von den dargestellten Diagrammen gilt f r die Pumpentypen SCK und SCK B 25 25 100 eine H chsttemperatur von 150 C SCK and SCK B 25 25 100 In contrast to the diagrams shown a maximum temperature of 1...

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Page 30: ...ls The laws are such as the Health and Safety at Work Act ArbSt ttV the Ordinance on Harzadous Substances GefStoffV BIOSTOFFV the procedures for the prevention of accidents as well as regulations to e...

Page 31: ...tamination of the pumps valves and component sent in for repair On the basis of this information for the contractor is it possible to meet the necessary preventive action during the execution of the r...

Page 32: ...ch cleaning method radioactive3 1 if no then forward to D other pollutant 2 Aggregates which are contaminated with microbiological or explosive substances are only accepted with documented evidence of...

Page 33: ...ai Info idexcorp com Internet www richter ct com Richter Pumps Valves Inc 406 State Street Cedar Falls 50613 IA USA Tel 1 319 268 8038 Fax 1 319 273 8157 Email RichterCedarFalls Info idexcorp com Inte...

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