42
HDK-MT350_EN_06
Draining condensate
Depending on the amount of accumulated condensate, open the condensate
drain at regular intervals to drain off the condensate.
Check operation of an automatic condensate drain as described in the
condensate drain manual.
Maintenance work to be completed every 12 months
Danger!
There is a very considerable risk of personal injury, when carrying out
work on the activated and pressurised dryer.
Maintenance tasks should only be carried out with the system switched
off and depressurised.
Replace dewpoint sensor
To ensure precision dew point measurement, it is recommended to replace the
dew point sensor every year.
Take care not to damage the sensor!
The dew point sensor is a sensitive measuring device. It can be damaged
if subjected to forceful vibrations or shocks. Therefore, please handle the
dew point sensor with great care at all times.
Replace the sensor as follows:
► Depressurise the dryer and shut it down (see page 35).
► Loosen the screw at the adapter and
disconnect signal cable with the adapter.
► Remove dewpoint sensor from the sensor
cell by turning the nut.
► Take the new dewpoint sensor from the
box, remove the protective caps and screw
it into the sensor chamber.
► Plug in connector and secure with screw.
Dewpoint sensor
► Check that all screw connections are tight.
► If no other maintenance work is to be carried out: Restart the dryer (see
page 36).
► Place the protective caps (4, 5) onto the old dew point sensor and dispose of
it in accordance with the applicable regulations.
Note on changing the connecting cable:
The connecting cable between the dewpoint sensor and control
system must be shielded to ensure trouble-free operation and reliable
measured values!
