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Technical description
11.17 DMC 18 electronics (control unit compressed-air chiller) – LC 55-355
Set
DISPLAY
The DMC18 controls the alarms and the settings of the chiller operation and of the BEKOMAT drain.
11.17.1 Switching the chiller on
Connect the chiller to the electric mains and switch it on via the ON/OFF switch (pos. 1 Section 11.1).
During normal operation, the display shows the dew point temperature.
The condensate drain test is always possible via the
11.17.2 Switching the chiller off
Switch the device off via the ON/OFF switch (pos. 1 Section 11.1).
11.17.3 Indication of the operating parameters
During normal operation, the display shows the dew point temperature (in °C or °F).
Press the
Set
button and keep it pressed to display the
dew point).
Press the
button and keep it pressed to display the hours remaining until the next maintenance.
Press the
Set
+
chiller.
Note:
The temperatures are indicated in °C or °F (LED
The total operating hours and the hours until the next maintenance are indicated in the field 0...999 hours,
and in thousand hours from 1.0 hours onwards (example: when the display shows 35, this means 35 hours
and when the display shows 3.5, this means 3,500 hours).
11.17.4 Indication of a service warning/service alarm
A service warning/alarm is an exceptional event and requires the attention of the operator/service technician. The
chiller will not be stopped.
When a service warning/alarm is active, the
The display successively shows the dew point temperature and the active service warnings/alarms.
Service warnings/alarms are automatically reset as soon as the problem has been eliminated, except for
(maintenance time expired), where manual resetting is required (press the
least 20 seconds).
NOTE: the operator/service technician must check the chiller and eliminate the problem that led to the
activation of the service warning.
Service warning alarm
NOTE: when the chiller is switched on but no system pressure is applied, the
may appear.
32
buttons and keep them pressed to display the total number of operating hours of the
LED flashes.
PF – Probe failure: failure temperature probe
HdP – High dew point: dew point too high, higher than the adjusted HdS value.
LdP – Low dew point: dew point too low, lower than the adjusted LdS value.
drA - Drain: failure Bekomat IF condensate drain
SrV - Service: maintenance service time expired SrV
Led - temperature in °C
Led - temperature in °F
Led – drain ON
Led – alarm/service
Button – access configuration menu
Set
Button – decrease / service
Button – increase / drain test
button.
parameter (alarm release temperature at a high
or
is on).
button and keep it pressed for at
Description
drain trouble indication
BEKOBLIZZ® LC 12-355
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Troubleshooting
