EXPO MiniPurge D801/ET, Manual

Page 1: ...these instructions Please refer to the standard for principles and definition These instructions apply only to the pressurizing system it is the responsibility of the manufacturer of the pressurized e...

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Page 3: ...nal Box 9 Section 6 Installation of the System 10 Relief Valve Unit 10 Air Supply Quality 10 Pipe Work 11 Multiple Enclosures 11 Provision and Installation of Alarm Devices 11 Power Supplies and their...

Page 4: ...C Db Tamb 20 C to 55 C PA Power and Alarm Switches Integral PA Terminal Box OV Purge Outlet Valve is pneumatically operated Timing Method ET Electronic Timer MiniPurge Housing ss Stainless Steel 316L...

Page 5: ...um supply line 50 mm 2 I D Pipe Reference points signals 1 8 NPT female Visual Indicators Alarm Red Pressurized Green System Purging 4 LEDs that flash sequentially to indicate elapsed time Black when...

Page 6: ...iate and CLAPS sensor calibration point For example Minimum pressure 5 mbarg intermediate pressure 6 5 mbarg CLAPS sensor 9 mbarg Purge Time User selectable in 1 minute intervals up to 99 minutes tole...

Page 7: ...air supply pressure during the purge process Operation of the System Once the system is installed correctly turn on the air supply Refer to Commissioning section The purge system commences the purge...

Page 8: ...e used in IECEx and ATEX Zone 1 21 and or Zone 2 22 Categories 2 and 3 respectively MiniPurge systems may be used for hazards of any gas group Apparatus associated with the MiniPurge system such as in...

Page 9: ...e enclosure before pressurization Purging is the process of removal contaminated air and replacement with air or inert gas known to be free from flammable gas The duration of this purge process is nor...

Page 10: ...s the regulator that controls the leakage compensation air flow into the enclosure after the purging is complete It either increases or decreases the air flow into the enclosure as appropriate to main...

Page 11: ...oning section Alarm Only Circuit AO If the pressure in the pressurized enclosure is too low the system will normally cut off electrical power to it In certain circumstances where local codes of practi...

Page 12: ...ugh the Relief Valve Unit the preset pressure differential across the appropriate orifice ensures that the purge flow sensor is activated once the selected purge flow has been attained During the purg...

Page 13: ...might affect the calibration of the device In particular the exterior of the spark arrestor should not be painted or blocked in any way Air Supply Quality The MiniPurge system should be connected to...

Page 14: ...minal boxes Provision and Installation of Alarm Devices When the pressure inside the pressurized enclosure is above the minimum the Minimum Pressure Sensor re turns a positive pressurized signal causi...

Page 15: ...rior to commissioning check that the terminal box is clean the connections have been made properly the cables laid correctly and all screws in the terminals are secure In all cases the application and...

Page 16: ...the CLAPS regulator clockwise till the Low Pressure Alarm Indicator turns green This activates the Purge Flow Regulator Slowly open the Purge Flow Regulator until the Pressure Relief Valve opens This...

Page 17: ...Pressure Sensor check readings on manometer as system will automatically re purge when it reaches minimum pressure 19 While the system re purges return the CLAPS Regulator to the initial setting 20 I...

Page 18: ...interlocks and alarms function correctly Approval labels are legible and undamaged Adequate spares are carried The action on pressure failure is correct Re calibration of the Relief Valve Unit Warnin...

Page 19: ...d sealant If the thread has seized up remove to a safe area and heat slightly to soften prior to making any adjustment This prevents potential damage to the brass of the nozzle Disconnect pipe work fr...

Page 20: ...been designed for ease of fault finding and many of the components fitted are plug in or chassis mounted Check components by substitution only after establishing that such action is necessary Before c...

Page 21: ...the supply pipe Static pressure of 4 2 barg must be maintained during purge Check air supply pressure at the inlet to the control unit Ensure that the supply pipe bore is suitable for the flow rate P...

Page 22: ...0 123 CLAPS control sensor S0191 025 E x d IIC T6 limit switch SPCO S0191 026 E x d IIC T6 limit switch DPNO AGE GE00 168 Electronic Timer assembly c w potted Timer switch EPW EPPS 000 EPPS 10 8V 80mA...

Page 23: ...CIRCUIT DIAGRAM AGM PA00 031 1 D801 Ex e TERMINAL BOX LAYOUT AGE WC00 194 1 D801 SHOWING GAUGE BRACKET MOUNTING OPTION AGM GM00 308 1 Component Certificate Number Purge System ATEX Certificate SIRA 01...

Page 24: ...MALS X 0 5 X X 0 2 X XX 0 1 X XXX 0 05 02 DQN 12479 19 05 2021 CE RJ AR PB AR LG 05 08 2019 DRAWN 01 SHEET No 1 OF 3 D801MOTORSYS S DIMENSIONS IN mm DENOTES IMPERIAL DO NOT SCALE IF IN DOUBT ASK CONTR...

Page 25: ...KED APPROVED DATE DRAWN DATE SURREY TW16 5DB UNITED KINGDOM Expo Technologies Limited DRAWING No REVISION RELEASED 02 12 2019 02 DECIMALS X 0 5 X X 0 2 X XX 0 1 X XXX 0 05 02 DQN 12479 19 05 2021 CE R...

Page 26: ...OLLED REF DESCRIPTION 1 ISOLATION VALVE 2 MAIN AIR SUPPLY FILTER 3 SYSTEM REGULATOR 4 SYSTEM REGULATOR GAUGE 5 MAIN AIR SUPPLY GAUGE 6 VOLUME BOOSTER 7 INTERMEDIATE LOW PRESSURE SWITCH ACTUATOR 8 LOW...

Page 27: ...385 5 287 7 5 1 352 7 21 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXPHQW DUH RS ULJKW SR 7HFKQRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV FRQILGHQWLDO DQG DUH UHWXUQDEOH XSRQ UHTXHVW 7KH DUH QRW WR EH FRSLHG RU FRP...

Page 28: ...to be treated as confidential and are returnable upon request They are not to be copied or communicated in part or in whole without written consent from Expo Technologies Limited neither are they to b...

Page 29: ...DISTRIBUTION PIPEWORK ELECTRICAL SIGNAL VIA EEx e JUNCTION BOX B C D E F 8 5 7 6 4 3 1 2 3RD ANGLE PROJECTION The contents of this drawing document are Copyright Expo Technologies Limited They are to...

Page 30: ...ur interests DIMENSIONS IN mm DENOTES IMPERIAL WEIGHT Kg TITLE DO NOT SCALE IF IN DOUBT ASK FINISH MATERIAL A3 SCALE DRAWING STATUS A TOLERANCES UNLESS OTHERWISE STATED FLATNESS TO BE LESS THAN 0 4 OV...

Page 31: ...be copied or communicated in part or in whole without written consent from Expo Technologies Limited neither are they to be used in any way against our interests DIMENSIONS IN mm DENOTES IMPERIAL WEIG...

Page 32: ...i d e s u e b o t y e h t e r a r e h t i e n d e t i m i L s e i g o l o n h c e T o p x E m o r f t n e s n o c n e t t i r w t u o h t i w e l o h w n i r o t r a p n i d e t a c i n u m m o c r o...

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Page 38: ...o Technologies Limited United Kingdom Unit 2 The Summit Hanworth Road Sunbury on Thames Sur rey TW16 5DB fulfills the necessary requirements to be certified according to EAC regulations General Direct...

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Page 48: ...chnologies UK Expo Technologies Ltd Unit 2 The Summit Hanworth Road Sunbury On Thames TW16 5DB UK T 44 20 8398 8011 F 44 20 8398 8014 E sales expoworldwide com Expo Technologies China Qingdao Expo M E...