DALUM CO2 - Page 47

CO2-Recovery Plant 47 EN/2020
Check the behavior of the Pressure
indicators on the condensate
separators. Contact DALUM.
53 Alarm
05DT61 Dew
point too high
The dew point has
been above
-30°C for 30 seconds.
High dew point is most
likely caused by
insufficiently
regenerated
dehydrator caused by
malfunctioning purge
valve on the
dehydrator in service.
High dew point can be
caused by water carry
over from a blocked
condensate separator
or scrubber water carry
over.
Moreover, high dew
point reading can be
caused by leakage
around the dewpoint
sensor 05DT61 or a
defect sensor.
Finally absorbent
desiccant might need
replacement.
Firstly, check for false alarm caused
by leakage near the sensor. Ice
around a leak could be visible. If the
sensor is under cooled misreading’s
will occur. Liquid CO2 around the
sensor will give high readings.
Depressurize and check if all
Dehydrator purge valves click by
forcing valve on. There could be a
debris in a valve or a blocked plunger.
Replace solenoid, plunger or valve if
needed.
Another cause could be carried over
water from the compressor if
condensate separators overflow,
check weekly check list. Contact
DBE.
If the dewpoint reads 20C in
operation the sensor is malfunctioning
or wet. Water and moist will damage
the sensor and a wet sensor should
be unscrews asap for drying up
ambiently.
Adsorbent may need replacement
especially if it has been wet or in
service for more than 1 - 2 years.
55 Alarm
Coolant too
hot for 60
minutes
This alarm sets the
machine in stop if the
Warning 33 06TT61
Coolant Too Hot has
been active for 12
hours.
Check if all manual cooling valves are
open.
Check if the coolant valve 06VA42
functions and opens. Check if the
external cooling system is functioning.
60 Alarm
05TE41 Not
Heating Up
Dehydrator 501 did not
reach 260 C during the
heating process. Could
be caused by
numerous stops and
start during the heating
cycle or a defect
heating element
05TE41.
Check the history for starts and stops
and if it’s the reason try rest and call
DALUM if dew point goes high in next
cycle.
If the dehydrator was not warming up
during the heating cycle, force on the
heating element and check if there is
power on the relay terminal once the
Heating element 501 is forced on.