Desmi HD User Manual
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Desmi HD User Manual

Rotan pump
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User Manual – incl. ATEX/English
Types GP – HD - PD - CD - CC - ED*
DESMI PUMPING TECHNOLOGY A/S
ROTAN PUMP
Tel.: +45 96 32 81 11
Fax: +45 98 17 54 99
E-mail:
desmi@desmi.com
Internet:
www.desmi.com
T1456UK-V9.7

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  • Page 1 User Manual – incl. ATEX/English ROTAN PUMP Types GP – HD - PD - CD - CC - ED* DESMI PUMPING TECHNOLOGY A/S Tel.: +45 96 32 81 11 Fax: +45 98 17 54 99 E-mail: desmi@desmi.com Internet: www.desmi.com T1456UK-V9.7...
  • Page 2 Tel.: +45 96 32 81 11 E-mail: desmi@desmi.com DESMI Pumping Technology A/S hereby declares that the product in question has been produced in accordance with the following essential health and safety requirements of the Machinery Directive 2006/42/EC Annex I. Product:...
  • Page 3 HD, CD, PD, GP, CC, ED(MD) Serial No: From 10000-xx-xx to 999999-xx-xx DESMI Pumping Technology A/S hereby declares that the product in question has been produced in accordance with the following essential health and safety requirements of the Machinery Directive 2006/42/EC Annex I: The following harmonized standards have been applied: EN 809:2002 + AC –...

  • Page 5: Table Of Contents

    Table of Contents GENERAL INFORMATION .......................... - 2 - EC DECLARATION OF CONFORMITY ......................- 10 - SAFETY WARNINGS – IN GENERAL ......................- 11 - SAFETY WARNINGS – ELECTRICITY ......................- 13 - SAFETY WARNINGS – ATEX ........................- 13 - PUMP MODELS ............................
  • Page 6 ED Pumps ............................- 86 - 26.2.3 Bypass valve ..........................- 86 - SERVICE CENTRES – DENMARK ......................- 86 - SUBSIDIARY COMPANIES – DESMI PUMPING TECHNOLOGY A/S ............- 87 - *ED operations and service instructions. See manual T1386...
  • Page 7 Table of figures Figure 1:Shows the group (G=Gas/D=Dust), the categories, zones and temperature classes (T1/T2/T3/T4) for which DESMI PUMPING TECHNOLOGY A/S can supply pump units within potentially explosive environments.................. - 4 - Figure 2:Shows the liquid flow through the ROTAN pump – seen from the front end................... - 6 - Figure 3:Shows what is designated as front and rear of the ROTAN pump.
  • Page 8 Figure 38:Ball/Roller bearing types and the minimum service life in hours for the various pump types and sizes........- 58 - Figure 39:Ball bearing types and the minimum service life in hours for pump type GP in the sizes indicated..........- 59 - Figure 40:Re-lubrication intervals and amounts of grease in grams for lubrication of slide bearings –...
  • Page 9 If the name plate is removed, the pump cannot be identified immediately, and therefore warnings in this manual cannot be compared with the specific pump application. The pump’s order number and serial number are displayed on the flange. DESMI PUMPING TECHNOLOGY A/S P a g e | - 1 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 10: General Information

    In the event that the pump is transferred to a third party, this user manual with any updated amendments and the operating conditions defined when the order was submitted must accompany the pump. DESMI assumes no liability for any personal injury or damage to the pump or other material damage resulting from: ...
  • Page 11 After testing the pump is emptied, but it has not been cleaned for test oil in the factory. All pumps are supplied with a signed test certificate. The tests described are conducted in accordance with the procedures set out in DESMI’s quality management system and in accordance with international classification companies.

  • Page 12: Figure 1:Shows The Group (G=Gas/D=Dust), The Categories, Zones And Temperature Classes (T1/T2/T3/T4) For Which Desmi Pumping

    DESMI’s consent. The information on the pump’s name plate will define whether it can be used in a potentially explosive environment.
  • Page 13 This risk assessment must be in conformity with the ATEX labelling DESMI PUMPING TECHNOLOGY A/S has stated on the name plate of the supplied pump – before start-up of the pump is allowed.

  • Page 14: Figure 2:Shows The Liquid Flow Through The Rotan Pump - Seen From The Front End

    Front Rear Figure 3:Shows what is designated as front and rear of the ROTAN pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 6 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 15: Figure 4:: A List Of The Various Pump Types, Their Designation And Application

    If the user manual proves to be incomplete with regard to the above or to the item supplied, you are of course welcome to contact DESMI. This user manual differentiates between the terms: ...

  • Page 16: Figure 5: A List Of Pump Sizes Based On The Internal Diameter Of The Pump's Inlet/Outlet In Inches And Millimetres

    Figure 6:A list of the various pump sizes together with the pump types available in the various pump sizes. Fields that are shaded grey indicate the sizes available in the pump types listed. The pump’s inlet/outlet can be supplied with internal threads or flanges. DESMI PUMPING TECHNOLOGY A/S P a g e | - 8 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 17: Figure 7:A List Of The Various Pump Sizes And Pump Types Supplied With An Internal Thread

    10 bar. The liquid in the heating chambers must have an ignition temperature of at least 50° C above the pump’s maximum surface temperature. ATEX DESMI PUMPING TECHNOLOGY A/S P a g e | - 9 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 18: Ec Declaration Of Conformity

    CE label in order to ensure that the combination represents no new hazards with regard to health and safety. Please note that pumps supplied by DESMI without a motor must be connected using an explosion-proof motor if you intend to use the pump in a potentially explosive atmosphere.

  • Page 19: Safety Warnings - In General

    ROTAN bypass valve.  Pumps without a ROTAN bypass valve must use another equivalent safety device which protects pump and motor DESMI PUMPING TECHNOLOGY A/S P a g e | - 11 - Tagholm 1 9400 Nørresundby - Denmark...
  • Page 20 The system must be depressurised before emptying the pump.  The safety instructions in the data sheet for the liquid in question must be observed, and the safety equipment specified must be used. DESMI PUMPING TECHNOLOGY A/S P a g e | - 12 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 21: Safety Warnings - Electricity

    Set the axial clearance to prevent heat generation and the subsequent risk of explosion  Position and fit vertical pumps in conformity with DESMI's instructions in order to avoid dry running and the subsequent risk of explosion in Ex pumps ...

  • Page 22: Pump Models

    The numbers in the above example refer to the numbers on the next page. This particular pump's designation is displayed on the pump’s name plate – refer to that! DESMI PUMPING TECHNOLOGY A/S P a g e | - 14 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 23: Pump Models

    Tungsten carbide Tungsten carbide DN100 - 4” 8) Material codes for main bearing DN125 - 5” DN150 - 6” Code Bearing Bush Shaft: GP-HD-PD Shaft: CD DN150 - 6” Cast iron St.60.2 X 8 CrNiMo 27 5 DN200 - 8”...

  • Page 24: Pump Versions

    6.2 Pump versions M – GP/HD M –PD/CD Sealing with packing coil, with or without lantern Sealing with single mechanical shaft seal, Sealing with single mechanical shaft seal, ring for external lubrication. Used for liquids with DIN 24960/EN 1275-KU, together with DIN 24960/EN 12756-KU, together with media- high viscosities and where leaking is allowed.

  • Page 25: Transporting The Pump

    We refer to the prevailing national rules at the location! The table below – Figure 9 - shows the weight in kg of the various pump types in the various pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 17 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 26: Figure 9:Table Showing The Weight In Kg Of The Various Pump Types In The Various Pump Sizes

    Lift of the pump shall be performed in conformity with the lifting instructions in Figure 10 – Figure 16 DESMI PUMPING TECHNOLOGY A/S P a g e | - 18 - Tagholm 1 9400 Nørresundby - Denmark...
  • Page 27 Pump type GP with thread Pump type GP with flange Figure 12: Figure 13: Lifting instructions for GP pump type with thread. Lifting instructions for GP pump type with flange. DESMI PUMPING TECHNOLOGY A/S P a g e | - 19 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 28: Figure 10:Lifting Instructions For Pump With Free Shaft End With Flange

    Figure 10:Lifting instructions for pump with free shaft end with flange. (Not applicable for HD202） Figure 11:Lifting instructions for pump with free shaft end with thread. Figure 12:Lifting instructions for GP pump type with thread. Figure 13:Lifting instructions for GP pump type with flange.

  • Page 29: Storage, Long-Term Preservation And Frost Protection Of The Pump

    Pumps fitted with EPDM rubber seals do not tolerate mineral oil-based oils and certain food oils. As an alternative, in this instance you can use silicon oil or a fire-resistant type of polyglycol-based hydraulic oil. DESMI PUMPING TECHNOLOGY A/S P a g e | - 21 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 30: Frost Protection

    ROTAN pumps to function in potentially explosive environments The flange motor in and GP pumps must have a locked bearing at the end of the shaft end – as well as vertically positioned pumps, to ensure that the pump’s axial clearance falls within permitted parameters.

  • Page 31: Connecting The Motor And The Pump

    2. Centring may deviate by a maximum of 0.05 mm when both halves of the coupling rotate. 3. Check the parallelism/gap between the halves of the coupling, using an air gap gauge. DESMI PUMPING TECHNOLOGY A/S P a g e...

  • Page 32: Axial Clearance

    The pump is fitted so that the shaft is horizontal. Point “A” shows the top point of the water trap which must be above the upper flange of the pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 24 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 33: Horizontal Positioning Of The Pump

    The pump is fitted so that the shaft is horizontal. Point “A” shows the top point of the water trap which must be above the upper flange of the pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 25 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 34: Vertical Positioning Of The Pump

    The pump is fitted so that the shaft is vertical. Point “A” shows the top point of the water trap which must be higher up than the pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 26 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 35: Positioning Of The Pump On Foundation

    Vertical pumps are bolted securely to an existing wall or a vertically cast foundation. The minimum distance between front cover and floor appears from Figure 19. DESMI PUMPING TECHNOLOGY A/S P a g e | - 27 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 36: Before Connecting The Pipes

    The diagram below shows the maximum permitted external force and torque that can be applied to the pump flanges. Figure 20:The location of forces and torque on the pump casing. DESMI PUMPING TECHNOLOGY A/S P a g e | - 28 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 37: Figure 21:The Maximum Permitted External Forces And Torque That May Be Applied To Pump Flanges For The Various Pump Sizes

    If a ROTAN pump with belt drive is required, the permitted power on the outlet shaft is provided on request. DESMI PUMPING TECHNOLOGY A/S P a g e | - 29 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 38: Flange Coupling

    *You should not use bolts with a yield stress of more than 240 N/mm , corresponding to quality 4.8, for pumps manufactured in grey cast iron – material code “1”. DESMI PUMPING TECHNOLOGY A/S P a g e | - 30 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 39: Threaded Coupling

    All pump types and pump sizes must always be protected against dry running either by means of a Liquiphant™ or other comparable devices ATEX DESMI PUMPING TECHNOLOGY A/S P a g e | - 31 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 40: Thermal Sensor

    The table below shows which temperature the control should be set to on the basis of the temperature class and whether it is an environment containing gas or dust. DESMI PUMPING TECHNOLOGY A/S P a g e | - 32 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 41: Emergency Stop

    It, however, it is deemed necessary to set the control to a higher temperature than indicated in the table, special approval has to be obtained from DESMI PUMPING TECHNOLOGY A/S, and a separate, unique assessment should be prepared. As a customer, you should also be able to present documentation that no sparks are formed in the area in question in the event a deviation is requested from the temperatures prescribed in the table.

  • Page 42: Electrical Coupling

    Connect any monitoring and safety systems that are necessary for safe operation Connect and adjust any monitoring and safety systems – manometers, flowmeters, etc. – according to the operating condition DESMI PUMPING TECHNOLOGY A/S P a g e | - 34 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 43: Before Starting The Pump

     That the necessary monitoring and safety systems are connected and adjusted according to the operating conditions/instructions in this manual DESMI PUMPING TECHNOLOGY A/S P a g e | - 35 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 44: Before Starting After Preservation

    That ball/roller bearings and any elastomers are replaced if the pump has been in storage for more than 6 years, as the lubricating grease used for elastomers and ball/roller bearings has a limited service life DESMI PUMPING TECHNOLOGY A/S P a g e | - 36 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 45: After Starting The Pump

    Always ensure that there is adequate pressure at the pump inlet to avoid cavitation so that the liquid does not boil or evaporate. Always check that the pump suction pressure is greater than the liquid’s steam pressure irrespective of the temperature. DESMI PUMPING TECHNOLOGY A/S P a g e | - 37 - Tagholm 1 9400 Nørresundby - Denmark...
  • Page 46 If the pump is not fitted with a valve, you may bleed the pump casing by removing the blank flange on top of the pump. DESMI PUMPING TECHNOLOGY A/S P a g e | - 38 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 47: Running In The Soft Shaft Seal - When Starting The Pump

    The soft shaft seal must leak continuously. 6. The leakage rate must be checked at regular intervals, see section entitled “Maintenance” If necessary, see also the section entitled: ”Adjustment of soft shaft seal” DESMI PUMPING TECHNOLOGY A/S P a g e | - 39 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 48: Bypass Valve

    The safety valve has return flow to the liquid tank. Bypass valve is defined as the valve supplied by DESMI PUMPING TECHNOLOGY A/S and which is fitted on the ROTAN pump – see Figure 26. The bypass valve secures only pump and motor.

  • Page 49: Figure 24:A Double-Action Bypass Valve

    However, in some cases a special ROTAN bypass valve can be supplied with heating jacket for connection to heating to prevent coagulation of the liquid – see Figure 25. DESMI PUMPING TECHNOLOGY A/S P a g e | - 41 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 50: Valve Configurations

    Outlet Pressure side Pressure side The suction side and pressure side are indicated on the valve by the letters S and P – see below: DESMI PUMPING TECHNOLOGY A/S P a g e | - 42 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 51: Operating Principle - Valve

    In this way recirculation of the pump liquid is created. This recirculation may not last for a long period of time, as this will cause the liquid and the pump to heat up significantly. DESMI PUMPING TECHNOLOGY A/S P a g e | - 43 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 52: Setting The By-Pass Valve

    “Bypass valve”. If the setting is DESMI’s default setting, this has been made on the basis of the tables – Figure 29 or Figure 30. Figure 29 covers valves fitted with a non-stainless spring and Figure 30 covers valves fitted with a stainless spring.
  • Page 53 Example Pump designation: HD/PD/GP/ED 26-202 - ”1U…” + ”4U…”+”5U…” Non-stainless spring - ”3U…” Pump designation: CD/ED 26-201 Stainless spring All settings of the regulating screw must be made on the basis of the tables – Figure 29 – or Figure 30 – or by means of pressure gauge.

  • Page 54: Figure 28:The Setting Value "A" For Rotan Valves

    HD26 / Valve no.: 8300 (non-stainless spring) A-value: 23.9 mm. Operating pressure = 8 bar. Figure 28:The setting value “A” for ROTAN valves. DESMI PUMPING TECHNOLOGY A/S P a g e | - 46 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 55: Figure 29:Setting Value "A" In Mm, Based On The Valve Number Or On Pump Type/Pump Size And The Valve's Operating Pressure In Bar

    Setting of valve Type HD / GP / PD / ED ( non-stainless ) Operating pressure / bar A-value w/non- Pump Pump size Valve no. compres type Setting value A/mm. spring 8300, 8301 26/33/41 8302, 8303 27,2 26,6 25,7 24,7...

  • Page 56: Pump Liquids

    There are various maximum temperatures for ROTAN pumps, depending on the pump type and the type of elastomer used, see Figure 31 and Figure 32. DESMI PUMPING TECHNOLOGY A/S P a g e | - 48 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 57: Figure 31:The Pump Liquid's Maximum Permitted Temperature For The Various Pump Types

    About –15° C / +170° C PTFE Teflon Figure 32:The pump liquid’s minimum/maximum temperature limits for the various elastomers used in ROTAN pumps. DESMI PUMPING TECHNOLOGY A/S P a g e | - 49 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 58: Foods

    Extra shielding may be purchased from DESMI 14.2 Foods ROTAN pumps must not be used to pump foods requiring FDA or 3A approval. Noise The noise level of ROTAN pumps depends on various parameters. The different parameters that can influence the sound pressure level are: differential pressure, viscosity, installation conditions, pump size and flow.

  • Page 59: Storing The User Manual

    Observe the inspection and maintenance instructions contained in this manual to achieve explosion protection for Ex-labelled pumps. ATEX DESMI PUMPING TECHNOLOGY A/S P a g e | - 51 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 60: Figure 34:The Figure Shows Which Parts Or What Must Be Checked And Maintained On The Pump, And At What Intervals This Must Be Undertaken

    That all parts are located correctly in connection with assembly Figure 34:The figure shows which parts or what must be checked and maintained on the pump, and at what intervals this must be undertaken. DESMI PUMPING TECHNOLOGY A/S P a g e | - 52 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 61: Adjusting The Soft Shaft Seal

    Figure 35:The location of the soft shaft seal, the shaft seal casing and the packing gland on the pump. The design of the shaft seal casing, does, however, depend on the individual pump application. DESMI PUMPING TECHNOLOGY A/S P a g e...

  • Page 62: Repacking - Soft Shaft Seal

    8. If the packing rings are difficult to move into position, they can be rolled with a pipe or similar item. Never strike a gasket, as the fibres in the material will be destroyed and the sealing property will be significantly worsened. DESMI PUMPING TECHNOLOGY A/S P a g e | - 54 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 63: Ball/Roller Bearings

    If the ball/roller bearings require lubrication, they are fitted with a lubrication nipple. The bearings must be lubricated at the lubrication intervals and using the volume of grease as stated in the table in Figure 37. DESMI PUMPING TECHNOLOGY A/S P a g e | - 55 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 64: Lubrication Of Ball/Roller Bearings

    * = C3 bearing ** = bracket bearing *** = main bearing DESMI PUMPING TECHNOLOGY A/S P a g e | - 56 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11...

  • Page 65: Service Life - Ball/Roller Bearings

    Example: Temperature: up to 70° C = 9000/10,000 hours (ATEX/non-ATEX ) 85° C = 4500/5,000 hours (ATEX/non-ATEX ) DESMI PUMPING TECHNOLOGY A/S P a g e | - 57 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 66: Figure 38:Ball/Roller Bearing Types And The Minimum Service Life In Hours For The Various Pump Types And Sizes

    The service life is calculated on the basis of a temperature of 70° C and a viscosity of 1000 cSt., and based on the maximum operating pressure of the various pump types. The bearings’ service life is reduced at temperatures above 70°C and in ATEX pumps – see section above. DESMI PUMPING TECHNOLOGY A/S P a g e | - 58 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 67: Figure 39:Ball Bearing Types And The Minimum Service Life In Hours For Pump Type Gp In The Sizes Indicated

    8,000 Figure 39:Ball bearing types and the minimum service life in hours for pump type GP in the sizes indicated. The service life is calculated on the basis of a temperature of 70° C and a viscosity of 1000 cSt., and based on the maximum operating pressure of ROTAN high-pressure pumps.
  • Page 68 ”CHD” pumps with lubrication connection in the back cover must not be pressure- lubricated with more than 20 bar The lubricant for chocolate pumps must not be harmful. The lubricant must be compatible with the chocolate mass DESMI PUMPING TECHNOLOGY A/S P a g e | - 60 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 69: Lubrication Of Slide Bearings

    Lubrication of slide bearings Fat quantity in grams Pump type: Relubrication interval HD, GP, CD, PD, ED, Main bearing Idler bearing in hours 8 hours Figure 40:Re-lubrication intervals and amounts of grease in grams for lubrication of slide bearings – main bearing and idler bearing.

  • Page 70: Troubleshooting

    24. Pump twisted in relation to pipe system 25. Leaking pipes/assemblies Figure 41:Various problems that can arise and possible causes of the problems. *Point 11 does not apply for pump type ED. DESMI PUMPING TECHNOLOGY A/S P a g e | - 62 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 71: Emptying And Cleaning The Pump

    If the pump has been bought in Denmark, we therefore refer to DESMI’s service centres at the back of this manual. If the pump was bought outside Denmark, we refer to the relevant distributor.

  • Page 72: Disposal Of Liquid

    Please refer to the relevant liquid’s safety data sheet! The safety instructions in the data sheet for the liquid in question must be observed, and the safety equipment specified must be used. DESMI PUMPING TECHNOLOGY A/S P a g e | - 64 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 73: Repairs

    Use spark-free tools when assembling and dismantling the pump and pump parts in potentially explosive atmospheres. ATEX Pumps that are sent to DESMI for repair must have been emptied and cleaned before our factory can accept them, and the pumps must be accompanied by information about the pump liquid used.

  • Page 74: Figure 42:The Axial Clearance Between The Rotor/Idler And The Front Cover

    There are various ways of setting the axial clearance, depending on the pump type and whether or not the pump is installed in a pipe system. See the section entitled: “Setting of axial clearance”. DESMI PUMPING TECHNOLOGY A/S P a g e | - 66 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 75: Axial Clearance

    Figure 43:The axial clearance in mm for the various pump sizes for standard pumps and pumps with special tolerances respectively. This table applies to pump types HD, CD, PD, GP, CC and ED. The pump size appears from the pump designation. Example: CD26EFMDK-3U332.

  • Page 76: Setting The Axial Clearance

    (for pumps excluding HD202) to a specific angle. Find the angle in the table below. *For axial clearance adjustment of HD202,please refer to Figure 46. DESMI PUMPING TECHNOLOGY A/S P a g e | - 68 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 77: Figure 44:Adjusting Screws' Min./Max. Angle Turn In Degrees - When Setting The Axial Clearance - For The Shown Pump Types, In The Specified

    Figure 44:Adjusting screws’ min./max. angle turn in degrees – when setting the axial clearance – for the shown pump types, in the specified materials and versions. DESMI PUMPING TECHNOLOGY A/S P a g e | - 69 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 78: Figure 45: The Size Of The Angle For A Single Surface On The Hexagonal Bolt Head On The Adjusting Screws

    Figure 46:HD202 axial clearance adjustment - adjust the bearing housing(pos. CR) . The procedure for setting the axial clearance in the various pumps for installed and non- installed pumps respectively. – appears from Figure 47. DESMI PUMPING TECHNOLOGY A/S P a g e | - 70 - Tagholm 1 9400 Nørresundby - Denmark...
  • Page 79 AS according to the above! 10. When adjustment is complete, make sure that the pump shaft turns easily and regularly, and that no jarring noises can be heard DESMI PUMPING TECHNOLOGY A/S P a g e | - 71 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 80: Figure 47:The Procedure For Setting The Axial Clearance In The Various Pumps For Installed And Non-Installed Pumps Respectively

    7. When adjustment is complete, make sure that the pump shaft turns easily and regularly, and that no jarring noises can be heard. (The flange motor in GP pumps must have a locked bearing at the end of the shaft end, to ensure that the pump’s axial clearance falls within permitted parameters) Figure 47:The procedure for setting the axial clearance in the various pumps for installed and non-installed pumps respectively.

  • Page 81: Figure 48:The Procedure For Setting The Axial Clearance On Installed And Non-Installed Hd202 Pumps

    44. as indicated by a wrenc h to move the rotor to backwards. Figure 48:The procedure for setting the axial clearance on installed and non-installed HD202 pumps. DESMI PUMPING TECHNOLOGY A/S P a g e | - 73 - Tagholm 1 9400 Nørresundby - Denmark...

  • Page 82: Spare Parts

    We recommend that you use original spare parts. DESMI accepts no liability for any personal injury or damage to the pump as a consequence of the use of non-original spare parts that do not satisfy precisely the same strict quality requirements as original DESMI spare parts.

  • Page 83: Spare Parts Drawings

    This section contains a representative selection of ROTAN sectional drawings. Not all pump configurations are included, but taken together the drawings selected show the most common position designations and designs. CD/PD..EFDKMMW – (CD/PD..EFMM) – (CD/PD..EFMMP) DESMI PUMPING TECHNOLOGY A/S P a g e | - 75 - Tagholm 1 9400 Nørresundby - Denmark...
  • Page 84 CD/PD..EF DESMI PUMPING TECHNOLOGY A/S P a g e | - 76 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
  • Page 85 GP..EM (HD..EM) Grove must face crescent vendes mod halvmåne DESMI PUMPING TECHNOLOGY A/S P a g e | - 77 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 86 ED…EFDK Bypass valve for HD,GP (CD,PD,ED) DESMI PUMPING TECHNOLOGY A/S P a g e | - 78 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...
  • Page 87 HD202EM DESMI PUMPING TECHNOLOGY A/S P a g e | - 79 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com www.desmi.com...

  • Page 88: Spare Part List

    Valve cone Spring Adjusting screw Fixing ring/spacer ring Threaded screw Canister DESMI PUMPING TECHNOLOGY A/S P a g e | - 80 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com...
  • Page 89 Thread fitting Spacer ring O-ring Bolt Draining plug Cylindrical pin DESMI PUMPING TECHNOLOGY A/S P a g e | - 81 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 90: Technical Specifications

    ROTAN pump may have further limitations due to the pump liquid, the shaft seal selected and in particular the motor selected. If the pump was bought in Denmark, we therefore refer to DESMI’s service centres at the back of this manual.

  • Page 91: Operational Pressure

    The stated max. operational pressure depends on the inlet pressure to the pump and the pump size. * Pump type GP is also supplied in a special high-pressure version which manages a max. of 25 bar. The high-pressure version is available in pump sizes: 27 / 34 / 42 / 52 / 67 / 82/ 102.

  • Page 92: Temperature

    ED pumps and pumps with soft shaft seal, must always be installed with a PT100 sensor according to DESMI PUMPING TECHNOLOGY A/S instructions. If the ROTAN ATEX pump is fitted with a bypass valve, a PT100 sensor has to be mounted on the bypass valve.

  • Page 93: Installation Of The Pt100 Sensor

    PT100 sensor. If DESMI is to deliver the PT100 sensor it is important that it is informed whether the PT100 sensor is installed in a intrinsically safe electrical circuit or not. If this information not can be given, DESMI will deliver a PT100 sensor according to 26.1.1...

  • Page 94: Ed Pumps

    DK-2650 Hvidovre Odense Hestehaven 61 +45 70236363 +45 6595 7565 DK-5260 Odense S DESMI PUMPING TECHNOLOGY A/S P a g e | - 86 - Tagholm 1 9400 Nørresundby - Denmark Phone.: +45 96 32 81 11 Fax : +45 98 17 54 99 E-mail: desmi@desmi.com...

  • Page 95: Subsidiary Companies - Desmi Pumping Technology A/S

    28. Subsidiary companies – DESMI PUMPING TECHNOLOGY A/S Subsidiary companies – DESMI Pumping Technology A/S Company Name Address Country Telephone DESMI Pumping No. 740 Fengting Avenue China +86 512 6274 0400 +86 512 6274 Technology (Suzhou) Weiting Sub District 0418 Co.,Ltd.

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