Available options
18 K-MT1-8_EN_08—2014
Signalling contacts of the control system & compressor synchronisation
The control system is equipped with a digital input for the synchronised operation
with a compressor. This feature allows for synchronised and thus efficient dryer
operation with discontinuous compressor operation.
Compressor synchronisation helps reduce energy costs, as the dryer can be
operated independently of the compressor.
The compressor synchronisation controller is a higher-level controller than the
pressure dew point controller (see below). When both options are in place, the
compressor synchronisation controller is treated as the prime controller.
The control system can also be equipped with an optional operation signalling
contact with which the dryer operation can be monitored from an external device.
Dryers with the optional dewpoint-sensing control are equipped with such a
contact as standard. It is used for the transmission of operating signals and for
the output of dewpoint alarms.
Regeneration gas return
When the compressor is switched off, the regeneration gas return ensures that
regeneration is continued, as soon as a certain compressed air volume is
reached behind the dryer. The regeneration process must be continued and
ended so that the drying agent does not become unusable prematurely.
Dewpoint-sensing control
With a dewpoint-sensing control system, you can operate the dryer in fixed or
variable cycles. In the fixed cycle, switchover is effected after a fixed time period
(usually after 5 minutes). In the variable cycle, the switchover is effected in
relation to the dew point reached and the charging of the drying agent . The
adsorption time in the variable cycle amounts to 60 minutes maximum.
Fine filter muffler
A fine filter muffler is used to reduce the noise emission of the dryer to lower
levels than the standard muffler can provide. If installed, the fine filter muffler
replaces the original installed muffler.
Nozzle kit
In the case that the operating pressure deviates from the standard design
pressure (7bar
e
) it is possible that the amount of necessary regeneration air
changes. This effect may have a negative impact on the cost-effectiveness of the
dryer. To prevent this, it is possible to replace the built in regeneration air nozzle
by a nozzle with a modified bore. This replacement optimizes the regeneration air
consumption and therefore restores the energy efficiency of the dryer. To receive
more information on this conversion, please contact the manufacturer.
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