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®
D771/ET MiniPurge
Manual
ML435 & ML384
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.
ML435 | v23 & ML384 | v3
14-July-17
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Related Manuals for EXPO D771/ET MiniPurge
Summary of Contents for EXPO D771/ET MiniPurge
- Page 1 Manual ML435 & ML384 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 ® 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 ...................... -
Page 4: Section 1: System Specification
For limitations and conditions of use refer to the applicable certificates in Appendix A of this manual. ML435 | v23 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
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 sensor = 9 mbarg. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 6: Relief Valve Unit And Purge Outlet Valve With Integral Spark Arrestor
Rectangular cut-out and fixing holes as per drawing. Weight: 7 kg (15.4 lb). ML435 | v23 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. ML435 | v23 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 If an obvious problem has not been highlighted and corrected, follow the procedures in the Fault Finding section. If all checks have been carried out and the system still does not perform as expected, contact your local distributor or Expo Technologies. ML435 | v23...
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Page 9: 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 10: Section 4: Description And Principle Of Operation
This system has been specifically designed to maintain a stable internal pressure within the enclosure. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... - Page 11 Normal Operation Fault Condition - loss of pressure outside of CLAPS regulation ML435 | v23 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 12: Section 5: Main Components
This valve receives a signal from the purge timer that indicates the completion of the purge cycle and verifies that the pressurization signal is still present. If both conditions are satisfied a signal is sent to indicate that the purge ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 13: Or Gate
The cable from the switch is terminated in the Intrinsically Safe terminal box. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 14: Intermediate Switch
IEC / European or other relevant local codes and it is recommended to maintain a minimum IP54 ingress protection. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 15: 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 16: Pipe Work
Technical modifications to the switch are not permitted. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... - Page 17 Power to apparatus that is already suitable for use in hazardous locations need not be isolated by the MiniPurge system. ML435 | v23 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 18: Section 7: Commissioning
• The flashing yellow indicator confirms the correct flow rate. • The differential pressure should be greater than 6.4 mbarg. ML435 | v23 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: Normal Operation
For normal operation of the system, after commissioning has been carried out it is possible to turn the air supply valve on or off to start or stop the system. After this, the purge and pressurization sequence is automatic. ML435 | v23 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011... -
Page 20: Section 8:Maintenance Of The System
To adjust the lift off pressure of the Relief Valve: • Attach test equipment as described in the Commissioning Section. ML435 | v23 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 21: 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. ML435 | v23 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 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 23: Relief Valve Opens (Continuously Or Intermittently)
The intrinsically safe battery pack • Replace as necessary . is discharged ML435 | v23 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 24: Section 10: Recommended Spares List
Manual Override Switch Hook-Up AGE-WC00-186 Size 5 MotorPurge RLV XBR-RTD0-009 ML435 | v23 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 25 SA body) Compensation Valve” (LCV) which is adjusted so that the flow is enough to compensate for any leakage from the PE. ¤ ¤ Expo Technologies Limited Page 1 of 7 ML384 Issue 03 – 09.01.13...
- Page 26 In addition, for "Y" and "Z" Pressurization systems, a suitable indicator shall fitted in any tube connecting the Expo system to the PE. be provided. 1.1.4 The user or manufacturer of the PE shall determine the volume of the PE, the necessary purging volume, and 1.2.3 The tubing and fittings used must conform to...
- Page 27 Pressure Sensor settings, are used (please ask Expo if in doubt). flow rates and purge time. Note: No valves may be fitted between the Expo system 1.5.2 Other marking, for the PE, required by the and the alarm switch.
- Page 28 LCV slowly observing the manometer or gauge (see as follows: item 2.1.3 above). The PE pressure will start to fall as the 2.3.1 Open the supply shutoff valve. ¤ ¤ Expo Technologies Limited Page 4 of 7 ML384 Issue 03 – 09.01.13...
- Page 29 PE as 2.3.10 “Y” and “Z” purge systems do not control the shown on the PE or Expo system nameplate. enclosure power. It is the responsibility of the user to Never turn on the power without purging first unless...
- Page 30 Is there debris stuck on the face of the Relief Valve dealt with below. If a cure cannot be effected by following disk, perhaps held there because of the magnetic the procedure shown below please call Expo (24 hour material? answering) or your supplier for further assistance.
- Page 31 Purge Flow Sensor needs re-calibrating it can either be point to the Purge Flow Sensor is not air-tight e.g. fitting returned to Expo for this service or it can be done by nuts not tightened or tube damaged. Check and repair as the user as follows: necessary.
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Page 32: Appendix A: Certifications
IECEx Certificate IECEx FME 10.0001X FM Certificate (USA & Canada) 3036907 (USA&Canda) ML435 | v23 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 41 II 2(3) GD MiniPurge systems are manufactured under Production Quality Assurance Notification SIRA 99 ATEX M043, issued by SIRA Certification Service, Notified Body No 0518. Signed for and on behalf of Expo Technologies Ltd., John Paul de Beer hn Paul de...
- Page 44 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 Twinsburg Sunbury on Thames Jimo City, Qingdao, Shandong Province OH 44087, USA TW16 5DB, UK...
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