EXPO D760-ET MiniPurge Скачать руководство пользователя

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ML548 | v11

20-April-2022

D760-ET MiniPurge

Manual

ML 548

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 D760-ET MiniPurge

Страница 1: ...hese 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 en...

Страница 2: ...CLAPS Sensor 10 CLAPS Regulator 10 Relief Valve Unit 10 PA Terminal Box 10 Thermostat and Heater 10 Section 6 Installation of the System 11 Relief Valve Unit 11 Air Supply Quality 11 Pipe Work 12 Mult...

Страница 3: ...ML548 v10 ii Section 11 Glossary 19 Section 12 Drawings and Diagrams 19 Section 13 Certifications 20...

Страница 4: ...circuits as preferred The temperature monitoring circuits themselves are provided by others If the logic air supply temperature falls below 10 C this should be investigated and rectified If the logic...

Страница 5: ...to 2 5 barg 36 psi Process Connections Purge supply and outlet to pressurized enclosure 1 NPT female Minimum supply line 25 mm 1 ID tube inlet sized appropriately for flow rate Reference points signa...

Страница 6: ...arg 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 CLAPS sens...

Страница 7: ...n 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...

Страница 8: ...y 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 intri...

Страница 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...

Страница 10: ...he 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 Flow Sensor moni...

Страница 11: ...ical supply to the pressurized enclosure and to reduce the high purge flow rate to leakage compensation mode It also provides a hold on signal that maintains the leakage compensation mode with the pow...

Страница 12: ...from the switch is terminated in the PA terminal box Intermediate Switch This is a flameproof switch which is activated by the signal from the Intermediate Sensor The cable from the switch is termina...

Страница 13: ...tlet Valve is closed and the enclosure sealed The Relief Valve Unit has an in built relief valve This is sized to ensure that if the air supply pressure rises up from the specified maximum the interna...

Страница 14: ...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...

Страница 15: ...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...

Страница 16: ...nuity meter Gauge manometer 0 to 200 mbarg Differential manometer 2 off 4mm plugs If after commissioning the system does not perform as expected refer to the Fault Finding Section Follow the steps as...

Страница 17: ...be changed by removing the large cover plate from over the outlet valve assembly and screws Warning When opening the Purge Flow Regulator ensure the over pressure within the enclosure does not exceed...

Страница 18: ...nual should be supplemented with any additional requirements set out in appropriate local codes of practice The following checks should be carried out every 6 36 months dependent on environment accord...

Страница 19: ...tment screw in position using the hex key loosen the retaining nut Adjust the hex key clockwise to increase or anti clockwise to reduce the lift off pressure Before testing retighten the locking nut w...

Страница 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...

Страница 21: ...n the supply pipe Static pressure of 4 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 Pr...

Страница 22: ...must be factory set to the value as stated on the Customer Test and Inspection Sheet S0015 018 Pressure gauge Air Supply Pressure 0 10 barg S0015 135 Miniature gauge Logic Pressure 0 4 barg ETM IS31 0...

Страница 23: ...ficate IECEx SIR07 0027X UKCA Certificate CSAE 21UKEX1067X CCC Certificate 2020312304000830 EAC Certificate RU GB 58 00906 20 Ex e Terminal Box ATEX Certificate BASEEFA 06ATEX0117X IECEx Certificate I...

Страница 24: ...THERWISE STATED MOD No REVISION DRAWN CHECKED APPROVED DATE DRAWN DATE SURREY TW16 5DB UNITED KINGDOM Expo Technologies Limited DRAWING No REVISION RELEASED 14 04 2014 FLATNESS TO BE LESS THAN 0 4 OVE...

Страница 25: ...X XXX 0 05 06 DQN 12429 30 06 2020 AR CE AR AR RJ CE 17 06 2020 DQN 12436 05 PB 21 11 2018 DQN 12414 04 SHEET No 2 OF 4 XBR 7TD0 106 DIMENSIONS IN mm DENOTES IMPERIAL DO NOT SCALE IF IN DOUBT ASK NOT...

Страница 26: ...ALLY SEATED UNION 6 Ex e ELECTRICAL JUNCTION BOX 7 ELECTRONIC PURGE TIMER WITH LED INDICATOR 8 SYSTEM PURGING INDICATOR QUAD AMBER LEDS 9 LOW PRESSURE ALARM TRIP INDICATOR RED GREEN 10 ALARM PRESSURIZ...

Страница 27: ...VISION RELEASED 14 04 2014 06 DECIMALS X 0 5 X X 0 2 X XX 0 1 X XXX 0 05 06 DQN 12429 30 06 2020 AR CE AR AR RJ CE 17 06 2020 DQN 12436 05 PB 21 11 2018 DQN 12414 04 SHEET No 4 OF 4 XBR 7TD0 106 DIMEN...

Страница 28: ...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 OVER...

Страница 29: ...NIMUM SIZE FOR PURGE AIR 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 Technolo...

Страница 30: ...d IIC T6 OPTIONAL AC 15 4A 250V Ex d IIC T6 COMPLETE CONTACTS ALARM CONTACTS LOW PRESSURE HIGH PRESSURE INTERMEDIATE LOW PRESSURE SYSTEM PURGING PURGE PURGE INLET PRESSURE ENCLOSURE MOTOR ENCLOSURE PR...

Страница 31: ...PPLY SUPPLY PT100 RTD SENSOR PT100 RTD SENSOR TYPICAL TYPICAL 4 WIRE BARRIER CONNECTION 4 WIRE BARRIER CONNECTION 1 SH SH B C D E F 8 5 7 6 4 3 1 2 3RD ANGLE PROJECTION The contents of this drawing do...

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Страница 51: ...E info expoworldwide com Expo Technologies Ltd Registered in England No2854600 www expoworldwide com Expo Technologies purge pressurization systems may incorporate temperature sensors based on platin...

Страница 52: ...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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