Alfa Laval CPM-2 Instruction Manual
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Alfa Laval CPM-2 Instruction Manual

Constant-pressure modulating valve
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Instruction Manual
CPM-2 Constant-Pressure Modulating Valve
IM70775-EN4
20 0-

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Summary of Contents for Alfa Laval CPM-2

  • Page 1 Instruction Manual CPM-2 Constant-Pressure Modulating Valve IM70775-EN4 20 0-...
  • Page 2 Declaration of Conformity The designating company Alfa Laval Company Name 6000 Kolding Address +45 79 32 22 00 Phone No. hereby declare that CPM-2 Constant-Pressure Modulating Valve Denomination Type Year is in conformity with the following directives: - Machinery Directive 2006/42/EC Manager, Product Centres, Bjarne Søndergaard...

  • Page 3: Table Of Contents

    4.2 Dismantling ..................16 4.3 Assembly ..................18 5. Technical Data ..................20 5.1 Technical Data................20 5.2 Selection / Pressure drop - capacity diagram ....... 21 6. Parts lists and service kits ..............22 6.1 CPM-2 ................... 22 6.2 Booster ..................24...

  • Page 4: Safety

    1.1 Important information 1. Safety 1.2 Warning signs 1.3 Safety precautions Unsafe practices and other important information are emphasized in this manual. Warnings are emphasized by means of special signs. All warnings in the manual are summarized on this page. Pay special attention to the instructions below so that severe personal injury or damage to the valve are avoided.

  • Page 5: Installation

    - At end of use, the equipment shall be recycled according to relevant, local regulations. Beside the equipment itself, any hazardous residues from the process liquid must be considered and dealt with in a proper manner. When in doubt, or in the absence of local regulations, please contact the local Alfa Laval sales company.

  • Page 6: General Installation

    Always observe the technical data (see chapter 5) Always release compressed air after use. Never touch the valve top if compressed air is supplied to the valve. NOTE! Alfa Laval cannot be held responsible for incorrect installation. Step 2 CPMI-2 CPMO-2 Ensure that the flow direction is correct.

  • Page 7: Welding

    2. Installation 2.3 Welding Study the instructions carefully. The valve has welding ends as standard. Weld carefully. CPMI-2: Constant-Pressure Modulating Inlet. CPMO-2: Constant-Pressure Modulating Outlet. Step 1 Dismantle the valve in accordance with steps 1-4 in section 4.2. Pay special attention to the warning! Step 2 CPMI-2: 1.

  • Page 8: Fitting Of Booster (Optional Extra)

    2.4 Fitting of Booster (optional extra) 2. Installation Study the instructions carefully and pay special attention to the warnings! The items refer to the parts list and service kits section. The valve can be fitted with a Booster to allow for a product pressure higher than available air pressure. Step 1 Atmospheric Burning danger!
  • Page 9 An air pressure compensating regulating valve must be used and should be installed with min. clearance to the Booster/ CPM-2 valve. The pressure regulating valve (PR) and the pressure gauge (PG) are optional extras. Alfa Laval recommends using the air pressure regulating valve from Alfa Laval. Dimensions: ø164...

  • Page 10: Operation

    Step 1 Always observe the technical data (see chapter 5) Always release compressed air after use. NOTE! Alfa Laval cannot be held responsible for incorrect installation. Step 2 Burning danger! Never touch the valve or the pipelines when processing hot liquids or when sterilizing.

  • Page 11: Fault Finding

    (see section 5.1) Valve plug moving too fast Pressure pulsations because of Use an air throttling valve (optional extra up and down (unstable) fast changes in process conditions between the air pressure regulating valve and the CPM-2 valve.

  • Page 12: Recommended Cleaning

    3.3 Recommended cleaning 3. Operation The valve is designed for cleaning in place (CIP). CIP = Cleaning In Place. Study the instructions carefully and pay special attention to the warnings! NaOH = Caustic Soda. HNO = Nitric acid. Step 1 Caustic danger! Always handle lye and acid with great care.

  • Page 13: Maintenance

    4. Maintenance 4.1 General maintenance Maintain the valve carefully. Study the instructions carefully and pay special attention to the warnings! Always keep spare diaphrams and o-rings in stock. Step 1 Always observe the technical data (see chapter 5). Always disconnect the compressed air before service. NOTE! All scrap must be stored/discharged in accordance with current rules/directives.

  • Page 14: Dismantling

    4.2 Dismantling 4. Maintenance Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. CPMI-2: Constant-Pressure Modulating Inlet. CPMO-2: Constant-Pressure Modulating Outlet. Step 1 Loosen and remove clamp (6). Step 2 CPMI-2: Remove cover (7) together with the internal parts of the valve from valve body (16).
  • Page 15 4. Maintenance 4.2 Dismantling Step 7 Remove outer ring (13), upper inner ring (11) and upper diaphragm (10). Step 8 Remove guide (9) from cover (7). Step 9 Remove O-ring (8) from guide (9). Step 10 Replace the O-ring and the diaphragms.

  • Page 16: Assembly

    4.3 Assembly 4. Maintenance Study the instructions carefully. The items refer to the parts list and service kits section. Lubricate the guide, the sectors and the threads before assembly. CPMI-2: Constant-Pressure Modulating Inlet. CPMO-2: Constant-Pressure Modulating Outlet. Step 1 Fit O-ring (8) Step 2 Lubricate guide (9) and fit it into cover (7).
  • Page 17 4. Maintenance 4.3 Assembly Step 7 Fit valve body (16) in cover (7). Step 8 CPMO-2: Fit plug (15b) through valve body (16) and in the diaphragm unit and guide (9) until the flange of the plug contacts lower diaphragm (14). Step 9 Fit top (3), washer (2) and top nut (1) on plug (15a or 15b).

  • Page 18: Technical Data

    5.1 Technical Data 5. Technical Data It is important to observe the technical data during installation, operation and maintenance. Inform the personnel about the technical data. Data Max. product pressure 1000 kPa (10 bar) (145 psi) Min. product pressure No vacuum Temperature range C to +95 C (14°F to 203°F)

  • Page 19: Selection / Pressure Drop - Capacity Diagram

    5. Technical Data 5.2 Selection / Pressure drop - capacity diagram It is important to observe the technical data during installation, operation and maintenance. Inform the personnel about the technical data. CPMI-2: Constant-Pressure Modulating Inlet. CPMO-2: Constant-Pressure Modulating Outlet. Q [m ∆P 500 [kPa] ∆P 400 [kPa] ∆P 300 [kPa]...

  • Page 20: Parts Lists And Service Kits

    6.1 CPM-2 6. Parts lists and service kits The drawing and the parts list include all items. Parts list Service Kits Item Qty. Denomination Denomination Item number Product wetted parts Washer NBR/EPDM-PTFE ........9611-92-0218 FPM/ PTFE ..........9611-92-0515 Washer FPM/EPDM-PTFE ........9611-92-0516 Screw FPM/PTFE/EPDM-PTFE ......
  • Page 21 6. Parts lists and service kits 6.1 CPM-2 The drawing below shows CPM-2. CPMI-2: Constant-Pressure Modulating Inlet. CPMO-2: Constant-Pressure Modulating Outlet. The drawing includes all items of the valve. The items refer to the parts list on the opposite part of the page.

  • Page 22: Booster

    6.2 Booster 6. Parts lists and service kits The drawings and the parts list include all items. Parts list Service Kits Pos. Qty. Denomination Denomination Item number Booster housing Diaphragm ..........31356-0094-1 Lock nut Washer Spring washer Booster piston 7 ∆ Diaphragm Booster cover Clamps and screws...
  • Page 23 6. Parts lists and service kits 6.2 Booster The drawing below shows the Booster. The items refer to the parts list on the opposite part of the page. The drawing includes all items of the valve.

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