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Christian Maier GmbH & Co. KG 

© 2020 by Christian Maier GmbH & Co. KG Maschinenfabrik | This document may not be copied or disclosed to third parties. 
All rights, including copyright and property rights, reserved by Christian Maier gmbH & Co. KG. 
Operating manual Series DP_en –Part-S- Version 9 – 27.05.2020 

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5

 

Media specification 

Approved media for the pressure pipe

 

Series DP … 06 may be used for water, compressed air and hydraulic oil, the series DP and DPN for water,    
having the quality described below. Other media including additives (e.g. anticorrosion or antifreeze agents) 
must be checked for compatibility with the sealing materials at the manufacturer's site.  
Thermal oil must not be used under any circumstances since the elastomers used in the units are not 
compatible with such media! Use only type DP … -800 rotary joints for thermal oil! 

General 

The quality of the Medium used plays a decisive role regarding the service life and reliability of Maier rotary 
joints. It is strongly recommended that the media meets the specifications listed below. Inappropriate water 
quality will result in heavy wear of the seals and premature failure of the rotary joint.  
 

Section 1: Water at temperatures -10°C - 70°C 

  

Row water: 

drinking water quality 

• 

General:  

clear, no sediments 

• 

Filtration: 

particle size 20 µm; max. 50µm  

• 

Water hardness: < 3,2 mmol/l  

 

If required, add a suitable antifreeze agent and a silicate-free anticorrosion agent (ensure compatibility with 
the materials used in the unit, check back with manufacturer, if necessary). 
 

Section 2: Water at temperatures > 70°C 

 

Row water: 

drinking water quality 

• 

General:  

clear, no sediments 

• 

Filtration: 

particle size 20 µm, max. 50µm  

• 

Water hardness: < 3,2 mmol/l  

 

Low salt concentration according to VdTÜV- Guideline TCh 1466 "Guideline for Circulation Water in Hot Water 
and Warm Water Heating Systems" ("Richtlinie für das Kreislaufwasser in Heißwasser – und 
Warmwasserheizungsanlagen), sheet 1 

 

If required, add a suitable antifreeze agent and a silicate-free anticorrosion agent (ensure compatibility with 
the materials used in the unit, check back with manufacturer, if necessary). 

 

 

Summary of Contents for DP Series

Page 1: ...Operating Instructions for Maier Rotary Joints Series DP...

Page 2: ...right Christian Maier GmbH Co KG Maschinenfabrik This manual including all parts of this manual is protected by international copyright laws Any use or modification of this manual beyond the limits of...

Page 3: ...tents Designation 1 General part of the operating instructions B 2 Specifications and spare parts S 3 For ATEX certified products directive 2014 34 EC Additional information for use in hazardous areas...

Page 4: ...tle Operating Instructions for Maier Rotary Joints Document designation B DP_en Document type Translation of the original Date of issue 05 2020 Version 0 List of modifications Version index Comment Da...

Page 5: ...Foreseeable Misuse 4 2 3 Components 5 2 4 Function 6 3 Safety 9 3 1 Introduction 9 3 2 General Safety Information 9 3 3 Structure of the safety Instructions 10 3 3 1 Signal words 10 3 3 2 Pictograms 1...

Page 6: ...uding copyright and property rights reserved by Christian Maier GmbH Co KG Operating manual Series DP_en Part B Version 10 19 03 2020 2 31 B 10 Repair 27 10 1 Tools 27 10 1 1 Repair Work 28 10 1 2 Dis...

Page 7: ...2014 34 EC The operators must read and fully understand this manual and observe all instructions it contains Exclusion of liability We shall not be responsible in any way for damages and op erational...

Page 8: ...e rotary joint as this can cause hazards Install operate and maintain the ro tary joint only as described in these operating instructions We shall not be liable for any damages and operational disrupt...

Page 9: ...2 3 Components B 1 SK Hexagon screw two way flow design FD2 Flat packing 2 two way flow design OR3 O ring 3 two way flow design F Spring GL Mechanical seal 2 x OR1 O ring 1 GR Counter ring SR1 Circli...

Page 10: ...y pressure system housing connection is made by means of the stationary part of the rotary joint the housing There are following design variations B 2 One way flow design single passage DP housing wit...

Page 11: ...rted in the elbow PR 2 The inner pipe runs inside the stationary el bow The points of support are subject to wear B 5 Stationary inner pipe with floating bearing and anti rotation device by means of s...

Page 12: ...Threaded connection The rotor has either a right hand or a left hand thread R L on one end A sealing ring or an O ring is used for sealing DN 06 50 with copper ring DN 65 100 with O ring fig B 6 or B...

Page 13: ...rotation device Use only flexible elements for housing connections Do not apply forces to the housing via the connections Only perform work on the rotary joint when the machine system is at a standsti...

Page 14: ...020 2 31 B 3 3 Structure of the safety Instructions 3 3 1 Signal words DANGER Acute danger Failure to avoid the situation will result in death or severe injuries WARNING Imminent danger Failure to avo...

Page 15: ...ivities that may cause damage to the rotary joints due to incorrect operation 3 4 Authorized Staff Only staff that has read and fully understood these operating instructions and that is fully aware of...

Page 16: ...ures if possible An analysis carried out by Christian Maier GmbH Co KG Maschinenfabrik resulted in the aspects listed below which necessitate an additional risk assessment by the user after instal lat...

Page 17: ...ith the materials and sealing elements used Otherwise there is the risk of chemical reactions and deposits at sealing and bearing elements 5 Information on Mounting and Operation The following has to...

Page 18: ...he rotary joint has a large nominal diameter or a long inner pipe or is operated at high speeds it is recommended to separate the inner pipe in the area of the rotor connection This facilitates mounti...

Page 19: ...roller DN 10 to 50 INFORMATION Use only flat packings made of pure graphite with metal insert Use only flat packings made of pure graphite with metal insert Preparation for mounting and separation of...

Page 20: ...nner pipe DPO2 Insert inner pipe into elbow Take care not to damage the O ring in the elbow A screw secures the inner pipe against rotation 6 2 Mounting the rotary joint to the roller DN 65 to 100 B 1...

Page 21: ...place the sealing element 7 into roller W 2 The flat packing as standard sealing can also be replaced by a different element e g an O ring Refer to the section Specifications and Spare Parts for ad di...

Page 22: ...mounting of rotor 90 to roller W MA 1 mm Otherwise leakage will occur at the sealing element and the rotary joint the inner pipe or roller W will be damaged Mount stud bolts 9 4 Lift the rotary joint...

Page 23: ...r W 5 Lift the rotary joint and insert it into the centering element of the roller W Design with inner pipe the inner pipe must be centered with the rotary joint and the roller W If it is hard to turn...

Page 24: ...e M from the static machine frame MG onto the rotary joint 2 Rotate roller W until the dial gauge is at the bottom dead center UT Mark the pointer position 3 Rotate roller W until you reach the top de...

Page 25: ...ion device INFORMATION Also refer to chapter 5 for important information on this section 6 3 1 Anti rotation device B 22 up to DN 50 The anti rotation device is a radial stop at housing connection B M...

Page 26: ...l Series DP_en Part B Version 10 19 03 2020 2 31 B 7 General information on connection lines The following sections show examples of the design of the flexible connection elements Permissible movement...

Page 27: ...GmbH Co KG Operating manual Series DP_en Part B Version 10 19 03 2020 2 31 B B 27 Avoid connection offset Bear in mind that bending causes linear deformation B 28 Allow for restricted degrees of freed...

Page 28: ...GmbH Co KG Maschinenfabrik This document may not be copied or disclosed to third parties All rights including copyright and property rights reserved by Christian Maier GmbH Co KG Operating manual Ser...

Page 29: ...imum values 8 1 Commissioning During initial commissioning minor dripping leakage of the medium may occur during the breaking in period of the dynamic seal The duration of the breaking in period de pe...

Page 30: ...cation bearing worn bearing damaged overhaul or repair observe the lubrication intervals replace rotary joint if dam aged friction torque exceeded bearing damaged sealing element damaged moving parts...

Page 31: ...joint always wear safety glasses to protect your eyes against escaping medium Use only genuine spare parts If protective equipment was removed it must be refitted after you have finished your work Ma...

Page 32: ...efer to the operating instructions of the complete system for any further information on properly performing preparatory work 1 Remove the housing connections 2 Secure the rotary joint with a restrain...

Page 33: ...0 1 4 DP size DN 10 to 50 B 32 1 Remove circlip L situated in the housing 2 Remove rotor M with bearings LA1 and LA2 from the housing G 3 Remove mechanical seal GL 4 Remove compression spring F 5 Remo...

Page 34: ...p L situated in the housing 2 Remove rotor M with bearings LA1 and LA2 from the housing G 3 Loosen screws S 4 Remove locking ring A 5 Remove O ring O 6 Remove mechanical seal GL 7 Remove O ring O1 8 R...

Page 35: ...laced every 12 months 10 1 6 1 Assembly of the rotary joint NOTICE Never grease or lubricate the sealing faces of the mechanical seal Apply a very thin film of a suitable lubricant to sealing rings O...

Page 36: ...fication 5 5 1 Approved media for the pressure pipe 5 5 1 1 Section 1 Water at temperatures 10 C 70 C 5 5 1 2 Section 2 Water at temperatures 70 C 5 5 1 3 Section 3 Thermal oil temperature 160 C 6 5 1...

Page 37: ...55000 DN 55000 DN 55000 DN 55000 DN 55000 DN Speed limite for formula values max min 1 3000 400 2500 2500 850 2500 The internal mechanical seal is balanced free and can be easely replaced with other...

Page 38: ...50 65 75 80 100 Initial lubrication QE Bearing 1 cm3 1 1 5 2 5 6 10 12 25 50 100 100 150 Bearing 2 cm3 1 1 5 2 5 6 10 12 25 25 50 50 75 Relubrication QN Rotary joint Strokes 2 3 2 4 5 6 8 10 15 20 40...

Page 39: ...should be checked within the next 3 days Column Stop If these values are exceeded stop the rotary joint immediately for safety reasons check and repair it if necessary Friction torque for Maier rotary...

Page 40: ...of Maier rotary joints It is strongly recommended that the media meets the specifications listed below Inappropriate water quality will result in heavy wear of the seals and premature failure of the r...

Page 41: ...gap the value should be as good as possible Kinematic viscosity For excellent flow in the system and lubrication effect in the rotary joint the following values should be attained as low as possible a...

Page 42: ...12353 091 B1 NPT Type DP 10 R 11 DP 15 R 11 DP 20 R 11 DP 25 R 11 DP 32 R 11 DP 40 R 11 DP 50 R 11 Order No 1112050 011 1112100 011 1112150 011 1112200 011 1112250 011 1112300 011 1112350 011 Type DP...

Page 43: ...3 0 5 0 6 1 3 Inner pipe for Elbow PO2 DN mm 10 15 20 25 32 40 50 C 1 G Type Order No P2 10 G 1112066 P2 15 G 1112116 P2 20 G 1112166 P2 25 G 1112216 P2 32 G 1112266 P2 40 G 1112316 P2 50 1112366 Type...

Page 44: ...0 1112101 800 DP 20 L 53 800 1112151 800 DP 25 L 53 800 1112201 800 DP 32 L 53 800 1112251 800 DP 40 L 53 800 1112301 800 DP 50 L 53 800 1112351 800 Type Order No DP 40 K 93 800 1112302 800 DP 50 K 93...

Page 45: ...15 G 800 1112118 800 PO2 20 G 800 1112168 800 PO2 25 G 800 1112218 800 PO2 32 G 800 1112268 800 PO2 40 G 800 1112318 800 PO2 50 G 800 1112368 800 C1 G 1 4 G 3 8 G 1 2 G 1 2 G 3 4 G 3 4 G 1 1 4 M 18 2...

Page 46: ...7 18E Mechanical seal E V 1112088 001 1112138 001 1112188 001 1112238 001 1112288 001 1112338 001 1112388 001 18C Mechanical seal C V 1112088 002 1112138 002 1112188 002 1112238 002 1112288 002 111233...

Page 47: ...12001 055 Type DP 06 R 101 Order No 1112000 101 Type DP 06 L 101 Order No 1112001 101 A 6 5 B G1 4 D G1 4 A E1 80 E2 89 F 70 J 40 M 17 5 U 11 5 GM1 60 GM2 33 5 LA 30 LB 3 2 SW 19 WZ1 25 4 WZ2 41 66 ZL...

Page 48: ...r No 1112402 091 11112577 091 1112452 091 1112552 091 B2 NPT Type DP 165 R 11 DP 175 R 11 DP 180 R 11 DP 1100 R 11 Order No 1112400 011 1112575 011 1112450 011 1112550 011 Type DP 165 L 11 DP 175 L 11...

Page 49: ...91 1112456 091 1112556 091 B2 C2 NPT Type DP 265 R 11 DP 275 R 11 DP 280 R 11 DP 2100 R 11 Order No 1112404 011 1112579 011 1112454 011 1112554 011 Type DP 265 L 11 DP 275 L 11 DP 280 L 11 DP 2100 L 1...

Page 50: ...NPT Type DPR 265 R 11 DPR 275 R 11 DPR 280 R 11 DPR 2100 R 11 Order No 1112408 011 1112583 011 1112458 011 1112558 011 Type DPR 265 L 11 DPR 275 L 11 DPR 280 L 11 DPR 2100 L 11 Order No 1112409 011 1...

Page 51: ...488 001 1112488 001 1112539 001 18C Mechanical seal C V 1112438 002 1112488 002 1112488 002 1112539 002 19K Counter face K V 3511385 001 3511386 001 3511386 001 3511388 001 19W Counter face W V 351138...

Page 52: ...201 051 1113251 051 1113301 051 1113351 051 Type DPN 1B40 K 91 DPN 1B50 K 91 Order No 1113302 091 1113352 091 Type DPN 1C10 R 51 DPN 1C15 R 51 DPN 1C20 R 51 DPN 1C25 R 51 DPN 1C32 R 51 DPN 1C40 R 51 D...

Page 53: ...1 051 1113261 051 1113311 051 1113361 051 Type DPN 240 K DPN 250 K Order No 1113312 091 1113362 091 Type DPNR 210 R DPNR 215 R DPNR 220 R DPNR 225 R DPNR 232 R DPNR 240 R DPNR 250 R Order No 1113063 0...

Page 54: ...tor K 1112336 1112386 14a Rotor K 1112336 163 1112386 163 18 Slide ring E V 1112088 001 1112138 001 1112188 001 1112238 001 1112288 001 1112338 001 1112388 001 18 Mechanical seal C V 1112088 002 11121...

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