Page 1: Table Of Contents
ML 488 IMPORTANT NOTE It is essential for safety that the installer and user of the Expo system observe the following instructions: Please refer to the standard for principles and definitions. (N.B. These instructions apply only to the Pressurizing system. It is the responsibility of the manufacturer of the Pressurized Motor Enclosure to provide appropriate instructions for the Enclosure.)
Page 3: D801 Minipurge  - General System Specification
(Tamb -20ºC to 60ºC) IP66. Mounted inside D801 system c/w terminals, front access cover & access for glands on bottom of D801 system. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 4 : Factory set to 12000 Available flow rate: 7000, 8000, 10000, 12000 & 14000 Nl/min ML488 | 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 : Rectangular cut-out & fixing holes as per drawing. Weight : 23 kg (50.6 lb) ML488 | 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: Quick User Guide
If an obvious problem has not been highlighted and corrected then follow the checks in the section “Fault Finding”. ML488 | 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 If the checks have been made and the system will still not work then please contact your local distributor or EXPO. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 8: 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 for further guidance. Materials of construction: • Stainless Steel • Aluminium •...
Page 9: Description And Principle Of Operation
“Pressurization” is a method of protection used in Zone 1 and Zone 2 Hazardous Locations to ensure that the interior of an electrical enclosure, for example the motor housing, is free of flammable gas.  With the utilisation of the Expo MiniPurge system, the motor may be used safely in a hazardous environment.
Page 10: Main Components
Compensation” mode with the power switch on even when the Purge Timer has reset ready for the next purge cycle whenever it is required. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 11 = “Purge flow too low” (or not in the purge mode)  Yellow (Flashing)= “Purge Flow above the minimum” ML488 | 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 12 Cable glands must be “Ex” certified if they are non- metallic. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 13: Installation Of The System
6. Installation of the System This equipment 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 shall be installed in accordance with relevant standards, such as IEC / EN 60079-14, and any local codes of practice that are in force.
Page 14 The Motor Interlock Switch is a BARTEC 07-2511-1322 Limit Switch, “Ex d IIC Tamb -20ºC +60ºC” IECEx & ATEX certifications IECEx PTB 07.0045X & PTB 00ATEX1093X. Rated voltage/current: 250Vac, 4A (AC-15) ML488 | 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 15 No switches are permitted between the Power Switch and the MiniPurge system other than an authorised “Manual Override” circuit. ML488 | 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 16: Commissioning
• The "CLAPS Leakage Compensation Valve" can be set finally only when the enclosure has been installed in its permanent operating location. • Check that the system has been installed in accordance with Expo Instructions.  • Disconnect the supply pipe from the inlet to the MiniPurge system and blow clean air through it for at least 10 seconds per meter of length to remove any debris, oil and condensation.
Page 17 Turn the air supply valve On or Off to start or stop the system. After this, the Pressurizing and Purging sequence is entirely automatic. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 18: Maintenance Of The System
The maintenance recommended for the system consists of the following, supplemented by any additional local requirements imposed by the local Code of Practice. Expo recommends that the commissioning tests be repeated at every six to 24 months, dependent on the environment. In addition the following checks are also recommended at that time: •...
Page 19: Fault Finding
If the system is less than 12 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, oil and dirt in the air supply. For this reason the air system must always incorporate a dust and water filter to provide air to instrument quality.
Page 20 If it works OK reset the time to the original setting. Finally recheck the purge timer at its full setting. ML488 | v18 Page Expo Technologies UK Expo Technologies US Expo Technologies China T: +44 (0) 20 8398 8011...
Page 21: Recommended Spares List
Electronic Timer assembly c/w potted Timer Switch *must be factory set to correct value that is stated on Customer System Test & Inspection sheet. 11. Recommended Tools List Expo provided door key Flat bladed screwdriver 8mm Spanner 2.5mm Allen key 12.
Page 32 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 Date 16/08/2017...
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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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