1.4 DESCRIPTION
The dryer consists of :
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2 aluminium tanks filled with desiccant
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2 solenoid valves
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2 exhaust silencers
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1 regeneration nozzle
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1 electronic control panel
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2 aluminium blocks including air seals and non return valve
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1 pressure gauge
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1 sub-micron pre-filter (0.3 to 0.6 micron)
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2 After filters
1.5 ADSORBANT MATERIAL
The desiccant takes the form of highly porous particles with surfaces which are able to
retain (adsorb) the water vapour present in the compressed air (drying phase) and
restore it when the air is at atmospheric pressure (regeneration phase). The desiccant
used is activated alumina (CD067A).
1.6 OPERATING PRINCIPLES
The two columns operate alternately in the drying and regeneration phases. Regenera-
tion in one tank results from the expansion to atmospheric pressure of part of the dry
compressed air in the other. The pressure reducer is responsible for this transfer. Under
nominal conditions (service pressure of 7 bars), 10% of the nominal flow is depressurised.
The regeneration phase is shorter than the drying phase in order to allow the regenerated
column to return to service pressure before a new cycle starts.
1.7 SAFETY
Pressurised tanks may explode if used improperly. It is therefore essential to
locate any equipment which contains one or more of such tanks in such a
way that the risks relating to incorrect use are reduced to the absolute
minimum.
The person responsible for the staff who is going to install, operate and maintain the
machines described in this manual must make sure that they have read and understood
these instructions.
In particular we draw your attention to the safety procedures which are described in this
manual and which must be scrupulously adhered to. Observing these measures will
allow you to install, operate and maintain your dryer without risk.
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Reference : Manual Version 2
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