EXPO MiniPurge Type X Manual Download Page 27

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ML442 | v5k

Page

Expo Technologies UK

T: +44 (0) 20 8398 8011
E: [email protected]

Expo Technologies US

T: +1 (440) 247 5314
E:[email protected]

Expo Technologies China

T: +86 532 8906 9858
E: [email protected]

8. Approval Documents

System

Certificate

Certificate Number

MiniPurge



IECEx Certificate

IECEx SIR 07.0027X

ATEX Certificate

01ATEX1295X

INMETRO/TÜV

TÜV 12.1462X

FM Certificate

1X8A4.AE

UL Certificate

E190061

For PA Option Only Certificate

Certificate Number

Ex e junction box

IECEx Certificate

IECEx ITS 10.0003X

ATEX Certificate

10ATEX37092X

INMETRO/TÜV

TÜV 12.1463

Ex d switches

IECEx Certificate

IECEx EPS 14.0092X

ATEX Certificate

EPS 14 ATEX 1 766 X

9. Glossary

Acronym

Description

A&T

Alarm and Trip

Alarm Only

Continuous Flow

Control Unit

FCV

Flow Control Valve

Factory Mutual

Intrinsically Safe

Leakage Compensation

LCV

Leakage Compensation Valve

MIU

MiniPurge



Interface Unit

Ex d Power and Alarm Switch Wired to Ex e terminal box

Pressurized Enclosure

Pneumatic Output

RLV

Relief Valve

Spark Arrestor Unit

Underwriter Laboratories

Summary of Contents for MiniPurge Type X

Page 1: ...ML 442 Contents 1 Specification Sheet MiniPurge Type X Systems 2 Application Suitability 3 Description and Principle of Operation 4 Installation of the System 5 Commissioning 6 Maintenance of the Sys...

Page 2: ......

Page 3: ...ge Timer Stepped adjustable between 1 minute and 30 minutes Flow Pressure Sensors CF One sensor for both Low Pressure and Flow 1 WC 250 Pa 2 5 mbar LC Low Pressure Sensor 0 2 WC 50 Pa 0 5 mbar Flow Se...

Page 4: ...ina T 86 532 8906 9858 E qingdao expoworldwide com Visual Indicators CF Alarm Pressurized Red Green Purge Complete Red Green LC Alarm Pressurized Red Green Purge Complete Black Amber Action on Loss of...

Page 5: ...itching devices may be limited in their gas group The certification documentation supplied with any such devices must be checked to ensure their suitability This system is designed for use primarily w...

Page 6: ...purge flow measurement purge timing and local visual indication of Pressurized Alarm and flow sensed It also provides the outputs for power and remote alarm control corresponding to the output type s...

Page 7: ...ies UK T 44 0 20 8398 8011 E sales expoworldwide com Expo Technologies US T 1 440 247 5314 E sales na expoworldwide com Expo Technologies China T 86 532 8906 9858 E qingdao expoworldwide com Figure 3...

Page 8: ...ou will find that the RLV spring will cycle open and closed If this happens contact our service department for advice Figure 4 Leakage Compensation Circuit Diagram 3 5 Type of Output The functions of...

Page 9: ...e connected to IS circuits as the switch contacts are in the hazardous area In many instances these outputs may be connected to the Expo range of MiniPurge Interface Units MIU Figure 7 Intrinsically S...

Page 10: ...lled as close as possible to the PE It should be installed so that the system indicators and certification labels may be readily observed 4 2 Relief Valve RLV and Spark Arrestor Unit SAU To achieve ef...

Page 11: ...l Unit should be piped within the pressurized enclosure to ensure purging of potential dead air spots The purge system is fitted with an internal regulator factory set to 3 bar feeding the logic 4 4 P...

Page 12: ...e user s responsibility to verify or enter this data on the PE and or MiniPurge system nameplate Ask Expo if in doubt The IEC EN 60079 2 permits 5 free volume changes and an example of the calculation...

Page 13: ...AND AUTOMATIC DISCONNECT OF POWER A T a Leakage Compensation The action on loss of pressurization is set by moving the jumper tube see Figure 10 Action on Loss of Pressurization Jumper Tube The standa...

Page 14: ...as Release If the PE contains an internal source of release of flammable gas or vapour the procedures for assessment of the release as given in NFPA 496 or IEC EN 60079 2 should be used Expo is please...

Page 15: ...er thread size as the MiniPurge CU inlet fitting upstream of the connection 5 1 Continuous Flow CF Systems Open the Flow Control Valve FCV until the alarm pressurized indicator just turns from red to...

Page 16: ...of the minimum are permitted and a tolerance of 20 is normally acceptable If the time is too short it must be increased accordingly After the power has been applied via the CU the purging valve will c...

Page 17: ...n as the alarm pressurized indicator turns red the system will start to re purge If Alarm and Trip function is selected the enclosure power will be switched off While it is re purging return the LCV t...

Page 18: ...re Check the condition of the air supply filter element Clean or replace it as necessary At least every two years check the following additional items Apparatus is suitable for the Hazardous Location...

Page 19: ...2 months old parts under warranty should be returned to Expo for investigation with a full report of the fault and the system serial number As with any pneumatic system the greatest enemies are water...

Page 20: ...r supply pressure at the inlet to the MiniPurge is stable between 4 8 Barg 60 115 psi Yes Replace pipe work No Yes Any significant leakage must be corrected Check for leaks down the cables or conduit...

Page 21: ...vailable No Yes Check the small indicator button on the timer valve When the valve has timed out it should return out when depressed No Yes Yes Check if the external Power Switch contacts close at 1 4...

Page 22: ...s there debris on the RLV disk allowing air to leak from the valve Relief Valve opens continuously or intermittently Call Expo Remove the RLV cover and clean the valve disk If it is necessary to remov...

Page 23: ...ing LC Is the actual PE pressure below the setting of the Minimum Pressure Sensor Is the Leakage Compensation Valve setting too low causing the MiniPurge to auto repurge System purges correctly but th...

Page 24: ...MiniPurge is stable between 4 8 Barg 60 115 psi Yes Replace pipe work No Yes Any significant leakage must be corrected Check for leaks down the cables or conduit Ensure leakage does not exceed 60 Nl m...

Page 25: ...vailable No Yes Check the small indicator button on the timer valve When the valve has timed out it should return out when depressed No Yes Yes Check if the external Power Switch contacts close at 1 4...

Page 26: ...ere debris on the RLV disk allowing air to leak from the valve Relief Valve opens continuously or intermittently Call Expo Remove the RLV cover and clean the valve disk If it is necessary to remove th...

Page 27: ...y Certificate Certificate Number Ex e junction box IECEx Certificate IECEx ITS 10 0003X ATEX Certificate 10ATEX37092X INMETRO T V T V 12 1463 Ex d switches IECEx Certificate IECEx EPS 14 0092X ATEX Ce...

Page 28: ...rned off automatically without delay Pressurized signal absent i e Alarm ON include Alarm and or Trip Red Pressure Low Low Pressure sensor turns off Enclosure pressure falls below the minimum Enclosur...

Page 29: ...Flow starts No Yes Power on Power Sw signal ON Purge timer times out Yes Power turned off automatically Red Pressure Flow Low Low Pressure Flow sensor turns off Enclosure pressure or Flow Green Pressu...

Page 30: ...E 0 1 CERT RELATED MJF DRAWN 1 1 1 STAINLESS STEEL 3 CF OPTION SAU 25 SPARK ARRESTOR CF OPTION ONLY D P LO 6mm OR M5 10 32 UNF FITTING SUPPLIED MiniPurge CONFIGURATION PIPING KIT OPTIONAL DIRECT MOUNT...

Page 31: ......

Page 32: ...CONNECTION 1 8 NPTF 129 5 08 REMOVABLE COVER HOLE SUITABLE FOR GLAND M20 OR 1 2 NPT MOUNTING BAR PITCH 210 8 27 MOUNTING BAR SPECIAL OPTION ONLY 1 2 PA OPTION CUSTOMER TO SITE AND DRILL INPUT GLAND HO...

Page 33: ...RIP DOOR INTERNAL AO C A T A T AO C 26 22 LC LEAKAGE COMPENSATION SHOWN ITEMS IN DOTTED REMOVED FOR CF DRAWING STATUS APPROVED MOD No DATE ISSUE MATERIAL FINISH SURREY KT7 0RH UNITED KINGDOM Expo Tech...

Page 34: ...RH UNITED KINGDOM Expo Technologies Limited JOB No TITLE CUSTOMER DRAWING No SHEET No SCALE OF NO DEC PLACE 0 5 1 DEC PLACE 0 2 2 DEC PLACE 0 1 FLATNESS TO BE LESS THAN 0 4mm OVER ANY 100mm LENGTH 3rd...

Page 35: ...I e c a f r e t n I t i n U y l p p u s r e w o P s r o t c a t n o c r e w o p r o n o i t a c o L s u o d r a z a H n o N n o i t a c o L s u o d r a z a H V 0 3 x a m V A m 0 0 1 x a m I s y a l e...

Page 36: ...connection of the MIU e shall be connected to earth using minimum 4mm2 conductor TERMINALS MIU e may be fitted with a combination of WDU2 5 terminals certified to KEMA 98ATEX1683U IECEx ULD05 0008U S...

Page 37: ...Pressure Equipment Directive 97 23 EC MiniPurge Systems are classified as not higher than category I under Article 9 of this Directive and intended for use in potentially explosive atmospheres Hazard...

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Page 40: ...Technologies 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...

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