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CLOSE CONTROL AIR CONDITIONERS
OPERATION AND ROUTINE MAINTENANCE MANUAL
4.1 MAINTENANCE OF THE AIR FILTERS
On TECNAIR LV air conditioners, all air filters are equipped with differential pressure switches to monitor pressure loss
caused by clogging. The microprocessor signals when the measured pressure difference exceeds the set value. To change the trip
setting of a differential pressure switch, simply unscrew the cover and turn the setting dial to the desired pressure differential value.
4.1.1 AIR FILTER REPLACEMENT
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FILTER TYPE POSITION VALUE [Pa]
G4 / F7 filter Suction 250
NOTE:
G4 can be partially regenerated by washing in hot water and neutral detergents.
To ensure the efficiency of the filters, it is necessary to install the 15x3 mm seal
(supplied with replacement filters)
To replace the air filters the following instructions must be observed, as well as full compliance with safety obligations
regarding use of the equipment:
1. Set the main switch to “0”.
2. Open the front panels via the relative safety locks.
3. Remove the filter support by means of the fixing screws.
4. Replace clogged filters with clean or regenerated versions.
5. Position the support and secure by means of the fixing screws.
6. Close the front panels and return the main switch to “I”.
Air filter position
For more detailed and specific information on causes of the alarm, refer to the
INSTALLATION OPERATION AND MAINTENANCE MANUAL of the unit enclosed with the
IT media supplied.