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UNDERGROUND GAS PRESSURE REDUCING STATION
TYPE: COCON 26 N-LP/MP
Gorter Controls B.V.
Broeikweg 13
2871 RM SCHOONHOVEN
THE NETHERLANDS
Tel
:
0031 (0)182 387575
Fax
:
0031 (0)182 387272
Internet :
www.gorter.nl
E-mail
:
info@gorter.nl
SCHOONHOVEN
OPERATORS MANUAL
THE NETHERLANDS
Number
: 80.98.24.01.03.03
Edition
: September 7th 2001
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Table of Contents
Summary of Contents for GORTER CONTROLS COCON 26 N-LP
- Page 1 SCHOONHOVEN THE NETHERLANDS UNDERGROUND GAS PRESSURE REDUCING STATION TYPE: COCON 26 N-LP/MP OPERATORS MANUAL Gorter Controls B.V. Broeikweg 13 2871 RM SCHOONHOVEN THE NETHERLANDS 0031 (0)182 387575 0031 (0)182 387272 Internet : www.gorter.nl Number : 80.98.24.01.03.03 E-mail info@gorter.nl Edition : September 7th 2001...
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Page 2: Table Of Contents
4.9.2 Lower seal rings 4.9.3 Dust filter 4.10 Capacity: Increase of 4.11 Storage 5. Options 5.1 Introduction: Options 6. Additional data 6.1 Adjustment form Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 2... -
Page 3: Introduction
GORTER-Controls. Do not forget to state the manual version, the type of gas pressure reducing station and the serial number. The version number is printed at the cover of this manual. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 3... -
Page 4: General
Location of type plates Casing beneath pit cover Unit on membrane cover Pilots on the side of the pilot Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 4... -
Page 5: What Is The Cocon
The top of the station is located a few centimetres above or at ground level. Depending on the composition of the soil, a concrete foundation (plate) under the station may be needed. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 5... - Page 6 Ball valve DN50 Casing cover Pit cover Dust filter Regulator Monitor control Safety shut-off valve Shut-off relay Butterfly valve DN150 Handles Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 6...
- Page 7 Two handles are attached to the cartridge, so that the gas pressure reducing and safety unit can be easily removed from the casing. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 7...
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Page 8: Operation
The outlet pressure must be equal to the pressure set on the regulator pilot. No dirt particles in the discharge pipe. No moisture may enter the casing. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 8... -
Page 9: Automatic Operation
You will find the maintenance check list on page 10 (paragraph 4.2). This list contains all the check points which must be checked during a maintenance check. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 9... -
Page 10: Safety
Use spark free tools for all maintenance work to prevent explosions. Take care of your back during the installation and removal of the cartridge. Kneel and keep your back straight. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 10... -
Page 11: Operator
Check that the seal surfaces of the casing and the cartridge are clean. Check that the seal rings are sufficiently greased. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 11... -
Page 12: Checking: Correct Operation
Cause f The safety shut-off valve is closed. Solution f Replace the cartridge with a spare cartridge. Overhaul the defect cartridge. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 12... -
Page 13: Spare Parts
Illustration 4.1 is a drawing of a fully installed station. Use this drawing for guidance in the next four paragraphs. Illustration 4.1 'Fully installed station' Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 13... -
Page 14: Soil Condition And Foundation
Fasten the piping - tension free - in the clamps, which are attached to the foundations. Delivery of a complete foundation - supplied with a positioning frame for the casing and fastening clamps for the piping - is possible. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 14... -
Page 15: Placement Of The Casing
Close the pit cover. Fill the space between the station and wall of the hole to ground level with soil. Press the soil firmly. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 15... -
Page 16: Starting Up Unit Operations
After correcting the malfunction you can reset the emergency stop control button, by pushing the red button downwards. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 16... -
Page 17: Installation Of Unit
Replace the cartridge with a spare cartridge, if you cannot correct the malfunction on site. The replaced cartridge must be checked by a maintenance engineer. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 17... -
Page 18: Operation
Kneel and keep your back straight. Lift the cartridge perpendicular from the casing by the handles. See paragraph 4.6.2 for installing a spare cartridge. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 18... -
Page 19: Adjustment Data
Slowly open the ball valve DN50 in the supply pipe. The reduced pressure, shown on the pressure gauge, is now controlled by the monitor control. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 19... -
Page 20: Replacing Parts
The remaining parts must be replaced by a qualified maintenance engineer in the service workshop. Paragraph 4.7 describes how to remove the cartridge from its casing. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 20... -
Page 21: Upper Seal Rings
Clean both grooves with a solvent, which does not effect the cartridge's material. Make sure that the seal rings are sufficient greased with a low viscosity, gas Remark: resistant gel. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 21... -
Page 22: Dust Filter
Spare units (when being stored for long periods) should be stored in clean, dry and vibration free storerooms. Ensure that seal rings are well greased or talced with talcum powder, this prevents the Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 22... -
Page 23: Options
Inlet- and outlet headers for parallel uses of Cocon 26. Electronic pressure recorder. Thermometer. Testing unit. Flow (indication) meter. Relief valve. (Dis-) mounting tool for cartridge. Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 23... -
Page 24: Additional Data
Pilot monitor control ....bar/mbar Shut off relay ....bar/mbar Use the space underneath for notes: ....................................................................................................................................................................................................Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 24... - Page 25 Operators manual ..................................................................................................................................................................................Gorter-Controls B.V. – Schoonhoven- The Netherlands Operators manual underground gas pressure reducing station Type: COCON 26 N-LP Page 25...
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