Nuvair Open Voyager II, Руководство пользователя

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Voyager II & Open Voyager II Nitrox System
Nuvair
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17.4 LP Feed Air Filtration
Special attention needs to be given to the arrangement of the three LP Feed Air Filtration
Elements and Bowls. Properly reinstall each Element and Bowl to the correct Housing.
Improper sequence can cause damage to downstream components
The use of Grade D or better feed air is critical to prevent the passing of any residual oil vapor into
the Membrane System. Three stages of Hankison LP filtration are used to produce Grade D air:
1) Coalescing & Water/Oil Vapor Removal to 1 micron (HF7-20)
2) Coalescing & Water/Oil Vapor Removal to 0.01 micron (HF5-20)
3) Final Stage - Oil Vapor Removal to 0.003 PPM (HF1-20)
LP Filtration Inspection
Open each Filter and inspect as follows:
1) Inspect Bowl for the presence of moisture. A high level of moisture build-up in the HF7-20 Filter
indicates improper operation of auto-drain floats. Evidence of any moisture in the HF1=20 Filter
indicates air is not cooling properly and moisture is not properly being removed. Excess moisture
will prevent the final filter from operating properly and can lead to damage of the membrane.
HF1-20 HF5-20 HF7-20
Oil Coalescing Particle
Vapor &Water/Oil &
Removal Vapor Moisture
Removal Removal
Replacement Element Part Number
E1-20 E5-20 E7-20
Air Flow
HF5-20 Filter
with Auto-
Drain Float &
Liquid Level/
Service
Indicators
Element
HF1-20 Filter
with Manual
Drain –
Should not
Contain
Moisture
HF7-20 Filter
with Auto-
Drain Float &
Liquid Level
Indicator
Bowl
Housing