CU-EMA+
CAUTION
Health hazard if the heat exchanger leaks
The heat exchanger is charged with glycol-based coolant.
In the event of a heat exchanger leak:
a) Avoid contact with the skin and eyes.
b) In the event of a leak, do not restart the cooler under any circumstances The cooler
must be repaired by the manufacturer.
CAUTION
Hot surface
Burning hazard
Let the device cool down before maintaining.
7.3 Replacing the hose of the peristaltic pump
– Purge the device with inert gas or air (only when non-flammable gases inside the gas path) for some time before connecting
the lines or performing maintenance.
– Close gas supply.
– Disconnect device from power.
– After shutting off the power, allow a discharge time of at least 5 seconds.
– Loosen the 4 service cover service cover screws and remove cover.
– Disconnect supply and discharge tube from the pump (
observe safety notes!
).
– Loosen but do not remove centre knurled nut. Flip the screw to the side.
– Pull cover up and off.
– Unplug external connections and remove hose.
– Replace hose (Bühler spare part) and install pump in reverse order.
– Attach the service cover with the 4 screws.
– Restore the power and gas supply.
7.4 Cleaning and Calibrating the Moisture Detector
Moisture detectors only need to be replaced or serviced if unexpectedly trip or are damaged. If they are clogged, we recommend
checking if using a filter will avoid future occurrences.
– Purge the device with inert gas or air (only when non-flammable gases inside the gas path) for some time before connecting
the lines or performing maintenance.
– Close gas supply.
– Switch off and unplug the device (also applies to external controller voltage).
– After shutting off the power, allow a discharge time of at least 5 seconds.
– Uninstall, clean and reinstall moisture detector.
– Restore the power and gas supply.
– The device can be calibrated as described in the menu navigation above.
7.5 Cleaning and removal of the heat exchanger
Heat exchangers only need to be replaced or maintained if clogged or damaged. If they are clogged, we recommend checking if
using a filter will avoid future occurrences.
– Purge the device with inert gas or air (only when non-flammable gases inside the gas path) for some time before connecting
the lines or performing maintenance.
– Connect hoses or maintain.
– Close gas supply.
– Switch off the device and disconnect all plugs (also applies to external controller voltage).
– After shutting off the power, allow a discharge time of at least 5 seconds.
– Disconnect gas connections and condensate drain.
– Pull the heat exchanger up and out.
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Bühler Technologies GmbH
BE440029 ◦ 10/2020
