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Summary of Contents for Forbes Marshall SOFT31
- Page 1 Installation and Maintenance Manual Single Orifice Float Trap With SLR and/or TV SOFT31 (DN15-25) Energy Conservation | Environment | Process Efficiency www.forbesmarshall.com...
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Page 2: Table Of Contents
Table of Contents Preface .................1 Important Safety Notes ............1 Brief Product Information ............3 Product Working Principle ...........5 Installation Guidelines ............6 Start-up and Commissioning ..........7 Maintenance Guidelines .............8 Troubleshooting ..............11 Available Spares ..............13 Warranty Period ..............14 PLEASE NOTE - Throughout this manual this cautionary symbol is used to describe a potential damage or injury that might occur if the safety considerations are overlooked. -
Page 3: Preface
The product is suitable for use as defined in the technical information sheet. In case the need arises to use the product on any other fluid please contact Forbes Marshall for assistance. - Page 4 India & abroad 2.11 Returning products: Customers and Stockist are reminded that, when returning products to Forbes Marshall they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health, safety or environmental risk.
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Page 5: Brief Product Information
Brief Product Information: Description: The Forbes Marshall Single Orifice Float Trap, SOFT31, is a cast iron single orifice float trap available with an integral automatic air venting facility. It is available with horizontal or vertical connections with flow downwards. As an alternative a manual needle valve can be added and used as a steam lock release. - Page 6 Operating Range: Steam saturation Pressure bar g 4 11 Figure1: Single Orifice Float Trap with SLR and / or TV Material: Sr.No Part Material Standard Cover Cast iron IS 210 FG260 Cover bolts Carbon steel ASTM A193 Gr.B7 Cover gasket Asbestos free synthetic fibre Base Cast iron...
- Page 7 Product Dimension and Drawing: SOFT31 SOFT31 (Flanged Version #125 & PN16) (Flanged Version) Dimensions (approx.) in mm: Size (DN) Wt.(kg) 15/20 General Tol : ±3 Figure 2: Dimensional Drawing of SOFT31 Single Orifice Float Trap With SLR and/ or TV...
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Page 8: Product Working Principle
INLET Pivot Pivot OUTLET OUTLET 3(b) Trap Discharge Closed 3(a) Trap Discharge Open Figure 3: Single Orifice Float trap working *The trap in the figure 3 shows a TV+SLR assembly. SOFT31(DN15-25) also comes with only TV or SLR assembly. SOFT31(DN15-25) -
Page 9: Installation Guidelines
Installation Guidelines: (Refer to Figure 4, 5, and 6) Note: Before implementing any installations observe the 'Important Safety notes” in section 2. Referring to the Installation and Maintenance Instructions, name-plate and Technical Information Sheet, check that the product is suitable for the intended installation. -
Page 10: Start-Up And Commissioning
Loosen the gland nut (1) by one thread Rotate the stem (2) in clockwise direction. This moves the stem (2) towards SLR seat. Once the stem touches the SLR seat, rotate the stem (2) in anti-clockwise direction by 1/4 of a turn. SOFT31(DN15-25) -
Page 11: Maintenance Guidelines
Immediately Daily Weekly Monthly Quarterly Annually yearly Test medium pressure SOFT31 (3.5 barg to 17.5 barg) Repair / Replace SOFT31 - when testing shows leaks Clean strainers of SOFT31 Clean internals of SOFT31 Visual inspection for leakages Arresting any other leaks... - Page 12 Tool Kit: To carry out any maintenance on the SOFT31 please use the tools mentioned below: Components Tool Tool Size SLR seat Box Spanner 17 mm (A/F) Valve seat (4.1mm ID) Box Spanner 17 mm (A/F) SLR Stem Slot Screw Driver...
- Page 13 Procedure to fit the steam lock release (SLR) assembly: (Refer to Figure 9) Unscrew the complete SLR assembly. Remove the SLR gasket. (not shown in the figure 9.) Replace the SLR assembly and gasket with new ones. Reset the SLR . Figure 9: SLR assembly Inspection and maintenance of air vent assembly :(Refer to Figure 10) Valve seat...
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Page 14: Troubleshooting
Leaking steam. Check for SLR leakage/setting check for air vent leakage. Tighten the cover nuts and bolts to the recommended torque. Steam leaking from the trap body. Check the gasket for any possible damage and replace it if required. SOFT31(DN15-25) - Page 15 Failure Mode Possible Cause Remedy Check parameters and trap sizing. The trap will not discharge enough condensate if the actual size is below the recommended size based on the condensate load. Check for back pressure and corresponding discharge capacities as per the capacity charts.
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Page 16: Available Spares
Always order spares by using the description given in the column above and stating the size of the trap. Example : Main valve assembly for DN 15 Single Orifice Float Trap SOFT31-T-4.5 Warranty Period: As per the ordering information and agreements in the contract. - Page 17 Always order spares by using the description given in the column above and stating the size of the trap. Example : Main valve assembly for DN 15 Single Orifice Float Trap SOFT31-T-4.5 Warranty Period: As per the ordering information and agreements in the contract.
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