EXPO MiniPurge D770/ET Page 33 Manual Download | Manualshive

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Summary of Contents for MiniPurge D770/ET

Page 1: ...se 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 encl...

Page 2: ......

Page 3: ...11 Relief Valve Unit 11 PA Terminal Box 11 Pneumatic Vortex Cooling Assembly 11 Vortex Cooler Activation Thermostat 12 Logic Isolation Thermostat 12 Section 6 Installation of the System 13 Relief Val...

Page 4: ...ii ML564 v3 Section 10 Recommended Spares List 22 Section 11 Glossary 22 Section 12 Drawings and Diagrams 22 Section 13 Certifications 23...

Page 5: ...Tamb 20 C to 60 C IECEx SIR07 0027X Ex pxb ia IIC T4 Gb Tamb 20 C to 60 C PC Pressurized Control Automatic leakage compensation CLAPS OV Purge Outlet Valve is pneumatically operated Timing Method ET E...

Page 6: ...y and outlet to pressurized enclosure 1 NPT female Minimum supply line 25 mm 1 ID tube inlet sized appropriately for flow rate Reference points signals 1 8 NPT female minimum 6 mm pipe to be used Visu...

Page 7: ...barg intermediate pressure 6 5 mbarg CLAPS sensor 9 mbarg Purge Time User selectable in 1 minute intervals up to 99 minutes tolerance 0 3 seconds Default Setting 99 minutes Weight 26 kg 57lb Air Consu...

Page 8: ...air supply pres sure during the purge process Operation of the System Once the system is installed correctly turn on the air supply Refer to Commissioning section The purge system commences the purge...

Page 9: ...er be less than the required purge time The system is now operating correctly in leakage compensation mode If the system has not performed as expected check the installation thoroughly and ensure it h...

Page 10: ...s 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 primarily designed for use with compressed...

Page 11: ...closure before pressurization Purging is the process of removal contaminated air and replacement with air or inert gas known to be free from flammable gas The duration of this purge process is normall...

Page 12: ...ower Interlock switch Alarm Trip Purge Time Machinery Start Normal Operation CLAPS Regulator Pressure Intermediate switch contacts open Intermediate sensor sends falling pressure signal Fault Conditio...

Page 13: ...specified pressure Purge Flow Sensor The Purge Flow Sensor monitors flow through the Purge Outlet Valve At correct purge flow rates above the minimum specified for purging the sensor sends a signal t...

Page 14: ...decision to use the Alarm Only facility and the allowable length of time for non pressurized operation is the responsibility of the user Warning It is potentially dangerous to energise the pressurized...

Page 15: ...aintain a stable running pressure The CLAPS Regulator must be set at the time of commissioning Relief Valve Unit The Relief Valve Unit allows the purge air to exit the enclosure safely via a built in...

Page 16: ...ient temperature caution should be used when placing sensitive components near the exhaust or physical handling during cooling operation Vortex Cooler Activation Thermostat A capillary tube thermostat...

Page 17: ...might affect the calibration of the device In particular the exterior of the spark arrestor should not be painted or blocked in any way Air Supply Quality The MiniPurge system should be connected to a...

Page 18: ...ove the minimum the Minimum Pressure Sensor re turns a positive pressurized signal causing the alarm indicator on the control unit to change from red to green When the pressure falls below the minimum...

Page 19: ...d all screws in the terminals are secure In all cases the application and isolation of power must be controlled by the MiniPurge system using the power interlock signal No switches are permitted betwe...

Page 20: ...ut to the MiniPurge This will disable all of the pressure sensors Using a 4 mm nylon tube connect a manometer to the bulkhead fitting from which the minimum pressure sensing pipe was removed Open the...

Page 21: ...sure sensor 19 To check operation of Minimum Pressure Sensor check readings on manometer as system will automatically re purge when it reaches minimum pressure 20 While the system re purges return the...

Page 22: ...ation There are no unauthorised modifications The air supply is uncontaminated The interlocks and alarms function correctly Approval labels are legible and undamaged Adequate spares are carried The ac...

Page 23: ...sitive and it is recommended that a 1 4 turn maximum adjustments are applied between tests Re calibration of the Pressure Sensors The brass nozzle on the sensor is sealed into position using Loctite t...

Page 24: ...esigned for ease of fault finding and many of the components fitted are plug in or chassis mounted Check components by substitution only after establishing that such action is necessary Before carryin...

Page 25: ...the supply pipe Static pressure of 5 barg must be maintained during purge Check air supply pressure at the inlet to the control unit Ensure that the supply pipe bore is suitable for the flow rate Pre...

Page 26: ...gauge Logic Pressure 0 4 barg ETM IS31 001 IS battery pack for electronic timer module AGE GE00 168 Electronic Timer Assembly c w potted Timer Switch Acronym Definition A T Alarm and Trip AO Alarm On...

Page 27: ...worldwide com downloads Component Certificate Number Purge System ATEX Certificate SIRA 01ATEX1295X IECEx Certificate IECEx SIR07 0027X INMETRO T V Certificate T V 12 1462X MIU e Ex e Terminal Box ATE...

Page 28: ...H 81 7 21 2 67 1 66 67 8 77 1 6 67 1 66 67 5 9 6 21 7 5 9 02 180 5 33529 7 33529 5 1 3 5 1 352 7 21 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXPHQW DUH RS ULJKW SR 7HFKQRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV F...

Page 29: ...85 1 0 1 385 28 1 725 175 16 6 7 50 1 6 25 57 6 1625 7 50 1 5 7 50 1 6 203 17 3 7 50 1 2 7521 7 0 5 7 1 5 7 50267 7 21752 9257 22 5 9257 22 5 7 9 7 21 7 50267 7 2 62 7 21 7 50267 7 9257 22 5 27 5 867...

Page 30: ...0 5 6 7 1R 2 6855 7 5 81 7 1 20 5 1 1R 6 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXPHQW DUH RS ULJKW SR 7HFKQRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV FRQILGHQWLDO DQG DUH UHWXUQDEOH XSRQ UHTXHVW 7KH DUH QRW WR...

Page 31: ...0 5 1 1R 6 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXPHQW DUH RS ULJKW SR 7HFKQRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV FRQILGHQWLDO DQG DUH UHWXUQDEOH XSRQ UHTXHVW 7KH DUH QRW WR EH FRSLHG RU FRPPXQLFDWHG LQ S...

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Page 34: ...6720 5 6 7 1R 2 6855 7 5 81 7 1 20 5 1 1R 6 7KH FRQWHQWV RI WKLV GUDZLQJ GRFXPHQW DUH RS ULJKW SR 7HFKQRORJLHV LPLWHG 7KH DUH WR EH WUHDWHG DV FRQILGHQWLDO DQG DUH UHWXUQDEOH XSRQ UHTXHVW 7KH DUH QRW...

Page 35: ...e i p o c e b o t t o n e r a y e h T t s e u q e r n o p u e l b a n r u t e r e r a d n a s t s e r e t n i r u o t s n i a g a y a w y n a n i d e s u e b o t y e h t e r a r e h t i e n d e t i m...

Page 36: ...ormal operation Key to functions Minimum Pressure sensor turns on Purge Complete signal to electrical Power Switch Automatic operation by the system No PRESSURIZED INDICATOR Purge Outlet flow above th...

Page 37: ...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 38: ...ment Directive 2014 68 EU MiniPurge Systems are classified as not higher than category I under Article 13 of this Directive and intended for use in potentially explosive atmospheres Hazardous Areas an...

Page 39: ...This Page Intentionally Left Blank...

Page 40: ...ologies Ltd Unit 2 The Summit Hanworth Road Sunbury on Thames TW16 5DB UK Tel 44 0 20 8398 8011 Fax 44 0 20 8398 8014 E mail sales expoworldwide com Qingdao Expo M E Technologies Co Ltd 329 Huashan Er...

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