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®
D870-ES MiniPurge
Manual
ML 636
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.
ML636 | v4
19 September 2024
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Table of Contents
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Summary of Contents for EXPO MiniPurge D870-ES
- Page 1 Manual ML 636 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.
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Page 2: Table Of Contents
Section 1: System Specification ....................1 ® MiniPurge Control Unit Data....................2 Relief Valve Unit and Purge Outlet Valve with integral spark arrestor........3 Section 2: Quick User Guide ...................... 4 Installation ..........................4 Operation of the System......................4 Section 3: Application Suitability ....................5 Section 4: Description and Principle of Operation ..............6 Section 5: Main Components ..................... - Page 3 System begins purging but cycles fail to complete..............20 Section 10: Recommended Spares List.................. 20 Section 11: Glossary ........................ 21 Section 12: Drawings and Diagrams..................21 Section 13: Certifications......................22 ML636 | v4...
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Page 4: Section 1: System Specification
6. Where a Vortex cooler is fitted the hot air outlet pipe shall be kept free from obstructions and blockage. ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 5: Minipurge ® Control Unit Data
Maximum: 5.0 mbarg. Default Setting: 1.5 mbarg. Tolerance -0, +0.7 mbarg. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 6: Relief Valve Unit And Purge Outlet Valve With Integral Spark Arrestor
Rectangular cut-out and fixing holes as per drawing. Weight: 23 kg (50.7 lb). ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 7: Section 2: Quick User Guide
Status Alarm / Pressurized Green Pressurized and in leakage compensation mode ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 8: Section 3: Application Suitability
® The following materials are used in the construction of MiniPurge systems. If substances that will adversely affect any of these materials are present in the surrounding environment, please consult Expo Technologies for further guidance. Materials of Construction Stainless Steel... -
Page 9: Section 4: Description And Principle Of Operation
Normal Operation Fault Condition - loss of pressure outside of CLAPS regulation ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 10: Section 5: Main Components
The Electronic Timer is powered by an EPPS (Electro-Pneumatic Power Supply.) Supply air must be available for the EPPS to operate. ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 11: Epps (Electro-Pneumatic Power Supply)
The cable from the switch is terminated in the /PA terminal box. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 12: Alarm / Pressurized Switch
Relief Valve Unit. When the system changes to leakage compensation mode, the Purge Outlet Valve is closed and the enclosure sealed. ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 13: Pneumatic Vortex Cooling Assembly
® The MiniPurge is designed for use under normal industrial conditions of ambient temperature, humidity and vibration. Please consult Expo before installing this equipment in conditions that may cause stresses beyond ® normal industrial conditions. The MiniPurge system must be installed by a competent person in accordance with relevant standards, such as IEC / EN 60079-14, and any local codes of practice. -
Page 14: Relief Valve Unit
No valve may be fitted in any signal pipe connecting the Control Unit to the pressurized enclosure. This pipe work must be fitted in accordance with local codes of practice where relevant. ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 15: Multiple Enclosures
Power to apparatus that is already suitable for use in hazardous locations need not be isolated by the ® MiniPurge system. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 16: Section 7: Commissioning
• The flashing yellow indicator confirms the correct flow rate. • The differential pressure should be greater than 6.4 mbarg. ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 17: Normal Operation
After this, the purge and pressurization sequence is automatic. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 18: Section 8: Maintenance Of The System
• Check that the interior and all components are clean and free from contamination. • Replace large cover plate ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 19: Re-Calibration Of The Pressure Sensors
• Turn clockwise to reduce the pressure setting and anti-clockwise to increase. • Replace sensor, screwing clockwise, then reconnect all pipe work. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 20: Section 9: Fault Finding
General Information If you are having problems that cannot be corrected using one of the methods described, please call Expo or your supplier for further assistance. If the system is less than 12 months old, parts under warranty should be returned to Expo for investigation. -
Page 21: Relief Valve Opens (Continuously Or Intermittently)
EPPS is free of any debris or obstructions. • EPPS may need to be replaced. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 22: Section 10: Recommended Spares List
D870 CIRCUIT DIAGRAM AGM-PA00-205 D870 & D872 Ex e TERMINAL BOX LAYOUT AGE-WC00-338 ML636| v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... -
Page 23: Section 13: Certifications
LCIE 99 ATEX 6017 X* IECEx Certificate IECEx LCI 07.0003X* *Certificates attached to manual. ML636 | v4 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011 T: +1 (440) 247 5314 T: +86 532 8906 9858 E: sales@expoworldwide.com... - Page 52 T : +44 20 8398 8011 E : euar@expopharma.ie E : sales@expoworldwide.com Expo Technologies Inc. Expo Technologies China Expo Technologies Inc. Qingdao Expo M&E Technologies Co. Ltd 9140 Ravenna Road Unit #3 617 Shilin Er Lu Twinsburg, Jimo District, Qingdao, OH 44087, USA...
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