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- Page 1 A531-14-880 Issue B Instruction Manual Model 250 Water-Cooled Exhaust Trap Description Item Number Model 250 Water-Cooled Exhaust Trap A531-14-000 Manor Royal, Crawley, West Sussex, RH10 9LW, UK Telephone: +44 (0) 1293 528844 Fax: +44 (0) 1293 533453 http://www.bocedwards.com...
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Page 2: Table Of Contents
MAINTENANCE Safety Maintenance plan Inspect hoses, pipelines and connections Clean the exhaust-silencer Replace the Exhaust Trap liners STORAGE AND DISPOSAL Storage Disposal SERVICE, SPARES AND ACCESSORIES Introduction Service Spares Accessories RETURN OF BOC EDWARDS EQUIPMENT Model 250 Water-Cooled Exhaust Trap... - Page 3 Publication Number Drystar MKII Dry Pumping System A302-73-880 Compact Drystar Pumps Models CDP40Si and CDP80Si A526-43-880 QDP Drystar Vacuum Pumps A528-40-880 QMKII Dry Pumping System A529-78-880 Disposable Liners for the Model 250 Water-Cooled Exhaust Trap A531-15-880 Model 250 Water-Cooled Exhaust Trap...
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Page 4: Introduction
Exhaust Trap is not suitable for connection to a pump which is used in other processes. The Exhaust Trap is designed to fit BOC Edwards CDP and QDP dry pumps and Drystar MKI, MKII and QMKII dry pumping systems. Your system must incorporate a pressure switch to shut-down the pump if the exhaust system becomes blocked. -
Page 5: Principle Of Operation
29. Inlet end-shield 13. Lifting-bolt 30. Cold-finger liner 14. ‘O’ ring 31. Outer liner 15. Top-flange 32. Trap inner body 16. Trap outlet 33. Cooling-coils 17. Outlet liner 34. Outlet end-shield Figure 1 - Key Model 250 Water-Cooled Exhaust Trap... - Page 6 Figure 1 - Components of the Exhaust Trap (with a cross-section of the trap-body) Model 250 Water-Cooled Exhaust Trap...
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Page 7: Installation Options
Exhaust Trap inlet, you must ensure that the temperature of the connecting pipeline does not fall to below 120 C. A BOC Edwards Temperature Management System (TMS) of suitable heaters and insulators is available for this purpose. Model 250 Water-Cooled Exhaust Trap... -
Page 8: Technical Data
See Figure 2 Trap inlet NW40 Trap outlet NW40 Water-inlet connector inch BSP male quick-connect Water-outlet connector inch BSP female quick-connect Construction materials Trap-body AISI 304L stainless steel Cooling-water coils Copper Liner components Zinc coated mild steel Model 250 Water-Cooled Exhaust Trap... - Page 9 Drystar MKI, pump outlet and 1433 CDP 40/80Ni, exhaust-silencer outlet * CDP 40/80i/Ei/Si exhaust-silencer outlet * 1373 * Installation configuration not described in this manual: see Section 1.3 Figure 2 - Exhaust Trap dimensions (mm) Model 250 Water-Cooled Exhaust Trap...
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Page 10: Installation
• Leak-test the system after installation work is complete and seal any leaks found to prevent the leakage of dangerous substances from the system and the leakage of air into the system. Model 250 Water-Cooled Exhaust Trap... -
Page 11: Unpack And Inspect
Exhaust Trap to the baseframe with the eight bolts. 4. Purge then shut down the pumping system. Allow the pump to cool to a safe temperature. 5. Remove the acoustic enclosure (if fitted) on the pump-outlet side of the pump. Model 250 Water-Cooled Exhaust Trap... - Page 12 Exhaust silencer Exhaust Trap QMB Booster Frame Acoustic Enclosure QDP pump Figure 3 - Exhaust Trap shown installed on a QMB/QDP combination pumping system Model 250 Water-Cooled Exhaust Trap...
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Page 13: Fit The Exhaust Trap To The Dry Pump
If your application uses hexachlorodisilane, ensure that liquid hexachlorodisilane cannot reach the Exhauust Trap. WARNING Use only BOC Edwards barrier shield trapped 'O' rings to seal pipeline connections. Note: In the following procedure, where necessary refer to the instruction manual(s) supplied with your pump or pumping system. -
Page 14: Connect The Cooling-Water Hoses
Your system must incorporate a pressure switch to shut-down the pump if the exhaust system becomes blocked. BOC Edwards CDP Si pumps and Drystar MKII and QMKII pumping systems incorporate a pressure switch. If you use the Exhaust Trap with a QDP pump, you must fit a QDP Exhaust Pressure Module which is available as an accessory (see Section 7). -
Page 15: Install A Nitrogen Flow Switch
Also, if air leaks into the exhaust-system, this will promote the collection of particulates in the exhaust-system. We recommend that the maximum allowed leak rate is 1 x 10 mbar l s (1 x 10 Pa l s ) helium. Model 250 Water-Cooled Exhaust Trap... -
Page 16: Operation
When the pump starts, the flow of water through the Exhaust Trap will cool the exhaust gases and particulates will start to collect in the Exhaust Trap. Shut-down After you switch off the pump, immediately turn off the cooling-water supply to the Exhaust Trap. Model 250 Water-Cooled Exhaust Trap... -
Page 17: Maintenance
• Take care to protect sealing-faces from damage. • Leak-test the system after maintenance. Seal all detected leaks to prevent the leakage of dangerous substances from the system and leakage of air into the system. Model 250 Water-Cooled Exhaust Trap... -
Page 18: Maintenance Plan
(or with your pump/pumping system). 4. Use the clamp (3) and Co-Seal (removed in Step 2) to connect the exhaust-silencer inlet to the Exhaust Trap outlet elbow (4). 5. Connect the exhaust-silencer outlet (2) to your exhaust-extraction system. Model 250 Water-Cooled Exhaust Trap... -
Page 19: Replace The Exhaust Trap Liners
You cannot clean the Exhaust Trap liners, you must replace them. Replacement Exhaust Trap liners are available as spares (see Section 7). Replace the Exhaust Trap liners as described in the instruction manual supplied with the Exhaust Trap liners. Model 250 Water-Cooled Exhaust Trap... -
Page 20: Storage And Disposal
Dispose of the Exhaust Trap and any components quickly and safely in accordance with all local and national safety and environmental requirements. Take particular care with components which have been contaminated with dangerous process substances. Model 250 Water-Cooled Exhaust Trap... -
Page 21: Service, Spares And Accessories
For more information about service options, contact your nearest Service Centre or other BOC Edwards company. Spares You must only use BOC Edwards recommended spares. The spares available for the Exhaust Trap are as follows: Spare Item Number... -
Page 22: Accessories
Accessory Item Number QDP Exhaust Pressure Module A528-06-000 CDP/QDP Exhaust-silencer A528-19-000 Exhaust Trap Connection and T.M.S. Kit for pump with 250/500 booster A531-14-060 Exhaust Trap Connection and T.M.S. Kit for pump with 1200 booster A531-14-065 T.M.S. Controller Unit 220/240V A550-01-068 T.M.S. - Page 23 (This page deliberately left blank) Model 250 Water-Cooled Exhaust Trap...
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