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ML434_ES | v11

20-April-2022

D758-ES MiniPurge

Manual

ML434_ES

Important Note:

It is essential for safety that the installer and user of the Expo system follow 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 enclosure to provide instructions for the enclosure.

Expo Technologies reserves the right to replace any component, with one of the equivalent functionality.

Содержание MiniPurge D758-ES

Страница 1: ...w 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...

Страница 2: ...S Regulator 9 Relief Valve Unit 9 PA Terminal Box 10 Section 6 Installation of the System 10 Relief Valve Unit 10 Air Supply Quality 10 Pipe Work 11 Multiple Enclosures 11 Provision and Installation o...

Страница 3: ...Ex rules Directive 2014 34 EU or UKCA Regulations as applicable For further details refer to the applicable certificates 5 X LC ss ES OV PA PC Size 5 MiniPurge Purge flow rate 6000 NI min Approval Cer...

Страница 4: ...5 mm 1 ID tube inlet sized appropriately for flow rate Reference points signals 1 8 NPT female minimum 6 mm pipe to be used Visual Indicators Alarm Red Pressurized Green System Purging 4 LEDs that fla...

Страница 5: ...10 mbarg Tolerance 0 10 Note there must be a 2 5 mbarg difference between the intermediate and CLAPS sensor calibration point For example Minimum pressure 5 mbarg intermediate pressure 6 5 mbarg CLAP...

Страница 6: ...in 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 purg...

Страница 7: ...ay be used in IECEx and ATEX Zone 1 and or Zone 2 Categories 2 and 3 respectively MiniPurge systems may be used for hazards of any gas group Apparatus associated with the MiniPurge system such as intr...

Страница 8: ...educed but remains high enough to compensate for the leakage of air from the enclosure whilst maintaining the minimum over pressure state In the event of pressure failure within the pressurized enclos...

Страница 9: ...o reset and the Alarm Pressurized indicator turns Red The sensor is factory calibrated and set to operate in falling pressure at or above the minimum specified pressure Purge Flow Sensor The Purge Flo...

Страница 10: ...e sent to the purge complete valve 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...

Страница 11: ...nimum required flow rate The Purge Flow Restrictor must be readjusted during commissioning CLAPS Sensor This sensor monitors the pressure within the pressurized enclosure and sends a control signal to...

Страница 12: ...points where air enters and exits the pressurized enclosure should normally be at opposite ends of the enclosure The RLV unit must be mounted vertically and there should be a minimum clearance of 300...

Страница 13: ...ppropriate to the environment into which the system is installed No valve may be fitted in any signal pipe connecting the Control Unit to the pressurized enclosure This pipe work must be fitted in acc...

Страница 14: ...must be replaced after any short circuit that occurs within the main circuit the switch is a piece of encapsulated equipment and as such it is not possible to check the state of the contacts Technical...

Страница 15: ...ll disable all of the pressure sensors Using a 4 mm nylon tube connect a manometer to the bulkhead fitting from which the minimum pressure sensing pipe was removed Open the Purge Flow Restrictor Valve...

Страница 16: ...operation of Minimum Pressure Sensor check readings on manometer as system will automatically re purge when it reaches minimum pressure 21 While the system re purges return the CLAPS Regulator to the...

Страница 17: ...us is suitable for use in the hazardous location There are no unauthorised modifications The air supply is uncontaminated The interlocks and alarms function correctly Approval labels are legible and u...

Страница 18: ...thread 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 w...

Страница 19: ...s 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...

Страница 20: ...uring purge Check air supply pressure at the inlet to the control unit Ensure that the supply pipe bore is suitable for the flow rate Pressurized Enclosure Excessive leakage from the pressurized enclo...

Страница 21: ...06 Purge flow sensor factory set to 6 4 mbarg S0030 016 Minimum Pressure sensor must be factory set to the value as stated on the Customer Test and Inspection Sheet HSI 0160 000 Intermediate pressure...

Страница 22: ...ystem Status Indication TP 518 058 WD 2 Component Certificate Number Purge System EU Declaration of Conformity SC004 UKCA Declaration of Conformity SC004 UK ATEX Certificate SIRA 01ATEX1295X IECEx Cer...

Страница 23: ...2 67 1 66 67 8 77 1 6 67 1 66 67 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 Q...

Страница 24: ...85 7 0 5 752 31 80 7 32 5 6833 336 1 725 50 35 6685 1 725 6 67 0 385 1 0 1 385 28 1 725 7 50 1 5 7 50 1 6 203 17 3 7 50 1 2 67 1 66 67 28 9 6 1 3527 725 5 1 352 7 21 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXP...

Страница 25: ...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...

Страница 26: ...6mm I D 1 8 NPT TEST POINT NORMALLY PLUGGED 1 8 NPT PRIMARY ENCLOSURE PRESSURE 1 4 6mm I D 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 Techn...

Страница 27: ...e they to be used in any way against our 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...

Страница 28: ...55 C 250V 4A AC 15 SYSTEM PURGING CONTACTS GREY BLACK BROWN 1 2 3 4 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 ar...

Страница 29: ...IF IN DOUBT ASK FINISH MATERIAL A3 SCALE DRAWING STATUS A TOLERANCES UNLESS OTHERWISE STATED FLATNESS TO BE LESS THAN 0 4 OVER ANY 100mm LENGTH ANGLE STD 1 MOD REVISION DRAWN CHECKED APPROVED DATE DR...

Страница 30: ...76 72 68 7 0 02817 1 7 6 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...

Страница 31: ...ORZ 2 ODFN 3XUJH IORZ WRR ORZ 3XUJH ORZ 6HQVRU WXUQV RQ HV 1R 3XUJH 2XWOHW IORZ DERYH WKH PLQLPXP 5HOLHI 9DOYH RSHQV 3XUJH IORZ VWDUWV 3UHVVXUL HG VLJQDO WR UHPRWH DODUP VZLWFK 35 6685 1 725 UHHQ 3UHV...

Страница 32: ...QRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV FRQILGHQWLDO DQG DUH UHWXUQDEOH XSRQ UHTXHVW 7KH DUH QRW WR EH FRSLHG RU FRPPXQLFDWHG LQ SDUW RU LQ ZKROH ZLWKRXW ZULWWHQ FRQVHQW IURP SR 7HFKQRORJLHV LPLWHG Q...

Страница 33: ...o further guidance for the selection of cable and cable glands or conductors in conduit When the MIU e application requires the hazardous area marking code Ex eb IIC T4 Gb Tamb 20 C to 60 C the user s...

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Страница 36: ...19ATEX0542X...

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Страница 39: ...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...

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