Specialist Maintenance - Zehnder Rittling ComfoSpot 50 Manual

Specialist maintenance

Inspection and cleaning of the enthalpy exchanger must be carried out at two-yearly maintenance intervals.
NOTE
Instructions for proper disinfection can be found at www.core.life.
In doing so, proceed as follows:
1. Disconnect the ComfoSpot 50 from the supply voltage.
2. Take the interior top cover off and remove the filter caps and filters (see chapter "3.3 Maintenance by the user").
3. Remove the plastic box for covering the electrical connection and disconnect the unit connecting cable (see chapter
"4.3 Installing the ventilation unit" and "4.4 Electrical connections").
NOTE
Disconnect the plug connection of the connecting cable if the external control panel is connected.
4. Pull the ventilation unit far enough out of the wall mounting pipe until the PVC cover for the control board is freely
accessible.
5. Remove the PVC cover of the control board at the side of the ribbon cable entry out of the slot on the EPP housing,
and gripping the plug, cautiously pull the ribbon cable out of the UI X9 plug connection on the control board.
NOTE
In the case of a connected external control panel and/or a built-in radio module, pull the connection cable out of the
BUS X7 connector on the control board in order to be able to remove it from the EPP housing together with the
bottom cover of the interior cover.
6. Undo the remaining three PVC nuts used to fasten the bottom cover of the interior cover from the threaded bolts and
remove the bottom cover.
7. Gripping the strap, cautiously pull the enthalpy exchanger out of the EPP housing.
NOTE
When withdrawing the enthalpy exchanger, use your other hand to hold the EPP housing tight, gripping the lower
filter compartment.
Enthalpy exchanger strap
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