EXPO MiniPurge D808/ET, Руководство пользователя, Страница: 8 / 36

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ML501_ET| v18
Expo Technologies UK
T: +44 (0) 20 8398 8011
E: sales@expoworldwide.com
Expo Technologies US
T: +1 (440) 247 5314
E:sales.na@expoworldwide.com
Expo Technologies China
T: +86 532 8906 9858
E: qingdao@expoworldwide.com
Stop the stopwatch when the purging indicator stops flashing.
Check stopwatch timing to verify that the actual purge time is equal to or greater than the required purge time.
Note: The recorded purge time must never 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 has been carried
out according to the instructions.
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.
Section 3: Application Suitability
MiniPurge
®
systems are certified for use in hazardous locations, where the hazardous location is non-mining
(above ground) and the hazard is caused by flammable gasses, vapours or dust. Depending on the model the
systems may be used in IECEx and ATEX Zone 1(21) and/or Zone 2(22) - Categories 2 and 3 respectively.
MiniPurge
®
systems may be used for hazards of any gas group. Apparatus associated with the MiniPurge
®
system, such as intrinsically safe signalling circuits and flameproof enclosures containing switching devices
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 air. Where other inert compressed gasses are
used (Nitrogen, for example) the user must take suitable precautions so that the build up of the inert gas does
not present a hazard to health. Consult the Control of Substances Hazardous to Health (COSHH) data sheet
for the gas used. Where a risk of asphyxiation exists, a warning label must be fitted to the pressurized
enclosure.
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.
Indicator Colour Status
Alarm / Pressurized Green Pressurized and in leakage compensation mode
Purging Black No longer in purge mode
Materials of Construction
Stainless Steel
Aluminium Acrylic
Mild (Carbon) Steel Nylon Silicone
Brass Polyurethane Neoprene
ABS Polycarbonate Polyester (glass filled)