Swagelok Changeover SCO User Manual Download Page 11

SCO User Manual

11

Setting the Regulator Changeover Pressure

Follow these instructions when either of the changeover regulators need to be serviced, replaced, or reset to ensure the 
regulator changeover pressure setting is correct and the LH and RH regulators are assembled in the proper orientation.

1.  Establish the requested changeover pressure from the ordering number.

2.  Use the 7 mm hex on the end of the 

stem

 to set the regulator to the desired changeover pressure.

3.  For the LH regulator only, once the desired pressure is reached, rotate the 

stem

 clockwise an additional half turn (180° 

of rotation).

4.  Mark the end of the 

stem

 with a line at the bottom. This will allow you to confirm nothing has moved after screwing on 

the hub.

HP Gauge

HP Inlet

HP Vent Valve

7 mm Hex

LP Outlet/ 

Changeover Set Point

Stem

Summary of Contents for Changeover SCO

Page 1: ...Swagelok Changeover SCO User Manual...

Page 2: ...SCO User Manual 2 Content SCO User Manual Introduction 3 Configurations 4 Mounting 6 Installation 7 System Startup 8 Operation 9 Maintenance 10 Reference Instruction Documents 18 Troubleshooting 19...

Page 3: ...y gas control system pre engineered for applications where the continuous supply of gas is critical When one source is depleted below a selected changeover pressure the continuous gas delivery system...

Page 4: ...l information Configuration 1 No Outlet Regulator Relief Valve Gauge and Noncaptured Inlet Valve Changeover Lever Handle Relief Valve Outlet Isolation Valve Outlet Gauge PI Inlet Gauges PI Inlet 1 pri...

Page 5: ...Regulator Relief Valve Gauge and Captured Inlet Vent Relief Valve Outlet Gauge PI Outlet Isolation Valve Inlet Gauges PI Captured Inlet Vent Valves Inlet 1 primary source Inlet 2 secondary source Outl...

Page 6: ...teners Approximate weight of the SCO is 20 4 lb 9 3 kg Dimensions Dimensions in inches millimeters are for reference only and are subject to change NOTE Weight will vary based on options ordered 13 6...

Page 7: ...et vent systems a bleed valve is used to vent to atmosphere CAUTION Position the bleed valve so that system fluid is directed away from operating personnel Always open bleed valves slowly Operating pe...

Page 8: ...elief valves conform to them Country Regional standard relief valves are to be maintained in accordance with local rules and regulations of the country in which they are installed CAUTION Swagelok pro...

Page 9: ...lever handle from the upward position 12 o clock to the downward position 6 o clock Note The primary gas source changeover regulator is set to a slightly higher outlet pressure than the opposing secon...

Page 10: ...regulators to their respective mounting brackets High Pressure HP Ports Are Shown in Red Low Pressure Ports Are Shown in Blue The Regulators Are E Pattern Changeover Handle Assembly To decouple the c...

Page 11: ...stablish the requested changeover pressure from the ordering number 2 Use the 7 mm hex on the end of the stem to set the regulator to the desired changeover pressure 3 For the LH regulator only once t...

Page 12: ...nd 5 32 in 4 mm before contacting the regulator body The changeover lever handle must be pointed toward the top of the panel 6 Screw the regulator handle lock nut M10 x 1 mm back onto the regulator st...

Page 13: ...to the main panel 16 Thread the shaft onto the regulator stem to achieve engagement of the shaft and hub ensuring the regulator stem does not rotate The shaft should extend past the set screw hole 17...

Page 14: ...the 12 o clock position The handle should always be pointing to the top of the panel 12 o clock 20 Mark the hub and shaft Cycle the changeover valve several times to ensure smooth operation Check to...

Page 15: ...w heads are recessed on the rear of the bracket so it can assemble to the main panel flush and without interference To remove the regulator the 1 4 in or 6 mm button head cap screws must be loosened t...

Page 16: ...nel first unscrew the 1 4 in or 6 mm button head cap screws to remove the bracket from the main panel The 1 4 in or 6 mm Swagelok tube fittings can then be loosened and the valve and bracket are remov...

Page 17: ...Area Flowmeters G Series and M Series MS 02 346 KPR series regulator Pressure Regulators K Series MS 02 230 D series needle valve Nonrotating Stem Needle Valves D Series MS 01 42 Ball valve 40G or 40...

Page 18: ...xternally Adjustable Relief Valve Maintenance Instructions MS CRD 0013 Service Instructions CH Series Check Valve MS CRD 0025 CA and CPA Series Check Valve Cracking Pressure Adjustment MS CRD 0047 D S...

Page 19: ...s damaged Inspect repair and or replace gauge Additional pressure source downstream in system Identify and correct system malfunctions Changeover function not operating properly Changeover handle asse...

Page 20: ...designer and user Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty For a copy visit swagelok com or contact your authorized Swagelok sales and service center...

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