VESDA VLC, Руководство по обслуживанию

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B Recommended Frequencies for General Maintenance and Filter Replacement
Note: The VESDA VLI detector is designed for use in industrial applications and harsh environments. The detector monitors the condition of consumable components and
will raise faults when a filter requires replacement. Refer to the VESDA VLI Product Guide for further information.
Environment
Class
Typical Application Background Smoke
Level
Recommended Filter
Replacement
Frequency
Recommended
Maintenance Period
Factors that may affect filter
replacement frequency.
Recommendations of use
1 Fully enclosed, and strictly no leakage,
fully air-conditioned, usually with HEPA
filters fitted, strictly maintained to high
standards of cleanliness such as Clean
Room classification 1, 10,100 in
accordance with US Federal Standard
209D, computer rooms with restricted
access, medical facilities with positive
pressure, installations within medical and
semiconductor equipment etc. Usually less than
0.006% obs/m (average)
{<0.002% obs/ft}
(average)
At least every 60 months At least every 24 months
(code requirements
typically call for 12
month Service Intervals
Higher clean room classification,
protection of other areas such as
wet bench, subject to
contamination due to frequent
access or minor building leakage
2 Fully enclosed and usually air-conditioned
with some filters fitted, high airflow
extraction systems or standalone AHU,
routinely maintained to acceptable health
recommendations for occupants. Frequent
access. May be multi-function facility.
General office building, telecommunication
base station, equipment switch rooms,
shopping mall, heritage building, churches,
document storage and general warehouse
type building (including cold storages) with
high ceiling. Usually between 0.006-
0.009% obs/m {0.002-
0.003% obs/ft} At least every 36 months At least every 24 months
(code requirements
typically call for 12
month Service Intervals)
Frequent access and/or
excessive building leakage/doors
connected to a highly polluted
ambient environment, infrequent
HVAC maintenance, high relative
humidity, activities such as
cooking, production, dusty
spaces like ceiling void,
suspension floor, regular wash
downs.
3 Similar to Environment Class 2 in
countries with high levels of pollution and
no filtration of outside air. Facilities with
light industrial sites, manufacturing and
processing without noticeable airborne
particles, prison cells, etc. Usually less than
0.015% obs/m {<0.005%
obs/ft} At least every 24 months At least every 12 months Low ceiling, higher airborne
particles level, high relative
humidity. May require water trap
in high humidity climate.
VESDA VESDA Maintenance Guide
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