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TECHNICAL MAINTENANCE
Maintenance operations of the unit are required 3-4 times per year. Maintenance includes general cleaning of the unit and the following
operations:
1. Filter maintenance.
Clogged filters increase air resistance in the system and reduce supply air volume.
Clean the filters as required, but not less than 3-4 times per year.
Upon elapsing of the set time for filter replacement a signal for filter replacement or cleaning is generated. In this case clean or replace
the filters and reset the operating hours.
The filter timer must be reset by a service engineer.
Filter cleaning with a vacuum cleaner is allowed.
After two consecutive cleanings the filters must be replaced.
For new filters of the type stated in the technical data, please contact to the unit Seller.
Steps for removal of the filters:
• Disconnect the unit from power supply.
• Open the service door using the key.
• Press slightly and release the retaining clips to remove the supply filters.
• Pull the filters to remove. Install the filters in the reverse order.
Release the supply filters
by releasing the retaining clips
CONTROL
Depending on the model the unit can be controlled:
• via a built-in control panel A17/A18
• via a wired control panel A17/A18
• via a controller (located in the control unit)
The functions of the controller and the th-Tune and pGDE control panels are described in the respective user's manuals.
WARNING! ELECTRIC SHOCK HAZARD!
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
