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®
D808/ET MiniPurge
Manual
ML501_ET
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.
ML501_ET | v18
17-Jan-20
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Table of Contents
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Summary of Contents for EXPO MiniPurge D808/ET
- Page 1 Manual ML501_ET 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 3: Table Of Contents
Section 1: System Specification ......................1 ® D808 MiniPurge Control Unit Data ....................2 D808 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 ...................... -
Page 4: Section 1: System Specification
-20ºC to +55ºC For limitations and conditions of use refer to the applicable certificates. ML501_ET| v18 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: D808 Minipurge ® Control Unit Data
Note: There must be a 1.5 mbarg difference between the minimum pressure and intermediate sensors. Purge Flow Sensor: Set at 6.4 mbarg (Tolerance: -0, +10%). ML501_ET | v18 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: D808 Relief Valve Unit And Purge Outlet Valve With Integral Spark Arrestor
Special orifice plate may be required. Note: Special settings are available on request, see Test and Inspection Sheet. ML501_ET| v18 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
Yellow On completion of an uninterrupted purge cycle of the required length, the system will indicate purge complete. ML501_ET | v18 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
This system has been specifically designed to maintain a stable internal pressure within the enclosure. ML501_ET | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 10: Section 5: Main Components
Red/”Green” visual indicator. The sensor is factory calibrated to operate on a falling pressure at or above the minimum specified pressure. ML501_ET| v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 11: Purge Flow Sensor
The cable from the switch is terminated in the /PA terminal box. ML501_ET | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 12: System Purging Switch (Optional)
The main requirement is that IP66 (or better) ingress protection must be provided by use of seals or washers. ML501_ET| v18 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 13: Section 6: Installation Of The System
® 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: Pipe Work
These contacts are terminated and accessible to the user in the Ex e terminal box. It is the responsibility of the user to ensure that the switch is only operated within appropriate technical limits. ML501_ET| v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... - Page 15 Power to apparatus that is already suitable for use in hazardous locations need not be isolated by the ® MiniPurge system. ML501_ET | v18 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...
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Page 16: Section 7: Commissioning
• The flashing yellow indicator confirms the timer has started. • The differential pressure should be greater than 6.4 mbarg. ML501_ET| v18 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. ML501_ET | v18 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 To adjust the lift off pressure of the Relief Valve: ML501_ET| v18 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. • Reconnect all pipe work. ML501_ET | v18 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 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)
The intrinsically safe battery pack • Replace as necessary . is discharged ML501_ET | v18 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
D808 P and I Diagram D808-PI D808/D838 Circuit Diagram AGM-PA00-167 ML501_ET| v18 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 E:sales.na@expoworldwide.com... -
Page 23: Section 13: Certificates
IECEx EPS 14.0092X Ex d limit switch EPS 14 ATEX 1766 X ML501_ET | v18 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 32 [This Page Intentionally Left Blank] ...
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- Page 36 Expo Technologies USA Expo Technologies UK Expo Technologies China Expo Technologies Inc. Expo Technologies Ltd. Qingdao Expo M&E Technologies Co. Ltd 9140 Ravenna Road Unit #3 Unit 2 The Summit, Hanworth Road 329 Huashan Er Lu Sunbury-On-Thames, Jimo City, Qingdao,...
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