Start-up
A190-930TX_EN_03_ 2009-02-06 33
Display Explanation
2 215
Default display: The figure to the left indicates the current
processing step; the figure to the right shows the remaining
time in seconds.
In this example, step 2 is being completed, whereby there are
215 seconds remaining.
SEr.
After 8000 operating hours, "SEr." (service) is displayed for
periods of 1 minute, alternating with the default display.
Notify the service personnel of the manufacturer, as a routine
service is now due.
– 25
With the dewpoint-sensing control option, the display shows the
currently measured dewpoint instead of the default data. The
range of display is -100 °C (-148 °F) to +20 °C (68 °F).
If the measured dewpoint exceeds the preset alarm limit (5 °C
(41 °F) above the switchover value), the displayed dewpoint
value is flashing.
With the optional dewpoint-sensing control, the following error messages might
be displayed:
Display Cause
+20
Upper measuring range limit exceeded
999
Dewpoint sensor defective
sens
or
–999
Dewpoint sensor not powered
Cable defective or disconnected
Sensor defective
LED Economy cycle (4)
This LED is only relevant in units that are equipped with the optional dewpoint-
sensing control. The diode lights up when the dryer is switched on and in the
standby phase and no regeneration air is required.
Vessel pressure gauge
On both vessels, pressure gauges are fitted which show the operating
overpressure. The operating overpressure indicates the operating phase of the
relevant vessel:
During adsorption the pressure gauge should indicate the nominal operating
overpressure.
During regeneration the indication of the pressure gauge on the regenerating
vessel
— should decrease in the expansion phase from operating overpressure to
0 bar overpressure,
— indicate an overpressure of 0 bar in the dehumidification phase.
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