Setting times of the operating phases
28 K-MT1-8_EN_08—2014
Setting times of the operating phases
In its standard version the dryer is delivered with a time-dependent control
system. The phase sequence occurs in a fixed cycle.
With the optional dewpoint-sensing control, the dryer can also be operated at
variable cycles (depending on the dewpoint).
The following table provides information on the duration of the individual phases.
Phase duration Fixed cycle Variable cycle
Adsorption 5 min 60 min, maximum
− of which: expansion time
~ 0.2 min ~ 0.2 min
− of which: dehumidification time
~ 4 min ~ 4 min
− of which: pressure build-up
~ 1 min ~ 1 min
Standby — ~ 55 min, maximum
Overview of operating and control elements
ON/OFF switch
The ON/OFF switch (2) is located to the side of the switchbox and above the
mains plug (1, see figure):
If it is set to 0, the power supply is disconnected and the dryer is switched
off. The main valves are (V1, V2) are open, while the expansion valves (V3,
V4) are closed. This means that the air can circulate in the main processing
direction, even if the dryer is switched off.
If the switch is set to I, the dryer is
switched on and begins to operate in
fixed cycle mode (i.e. time-controlled).
If the switch is set to position II, the
dryer is switched on and begins to
operate
— with compressor synchronisation
— in variable cycle mode (i.e. dew-
point-controlled).
Position II is only relevant for
operation with the optional
compressor synchronisation and/or
dewpoint-sensing control.
Switchbox with ON/OFF switch
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