User manual PANASONIC FZ 3

[. . . ] ACXF55-18840 Español Français English CS-FZ25UKE CS-FZ35UKE CS-FZ50UKE CS-FZ60UKE CU-FZ25UKE CU-FZ35UKE CU-FZ50UKE CU-FZ60UKE Operating Instructions Air Conditioner 2-23 Before operating the unit, please read these operating instructions thoroughly and keep them for future reference. The included Installation Instructions should be kept and read by the installer before installation. Remote control is packaged in the indoor unit and removed by the installer before installation. Use remote control within 8 m from the remote control receiver of the indoor unit. [. . . ] € Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need recalibration. ) • Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. € Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate percentage of gas (25 % maximum) is confirmed. € Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. € If a leak is suspected, all naked flames shall be removed/ extinguished. € If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. Oxygen free nitrogen (OFN) shall then be purged through the system both before and during the brazing process. Removal and evacuation • When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: remove refrigerant -> purge the circuit with inert gas -> evacuate -> purge again with inert gas -> open the circuit by cutting or brazing • The refrigerant charge shall be recovered into the correct recovery cylinders. € The system shall be “flushed” with OFN to render the unit safe. € Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. € This process shall be repeated until no refrigerant is within the system. € When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. € This operation is absolutely vital if brazing operations on the pipe work are to take place. € Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation available. Charging procedures • In addition to conventional charging procedures, the following requirements shall be followed. -Ensure that contamination of different refrigerants does not occur when using charging equipment. -Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them. -Ensure that the refrigeration system is earthed prior to charging the system with refrigerant. -Extreme care shall be taken not to over fill the refrigeration system. € Prior to recharging the system it shall be pressure tested with OFN (refer to #7). [. . . ] – Conducting a seasonal inspection after extended non-use • Check the remote control batteries. € Check that there is no obstruction around the air inlet and outlet vents. After 15 minutes of operation, it is normal to have the following temperature difference between the air inlet and outlet vents: COOL: ≥ 8 °C / 14. 2 °F ■ The units are not going to be used for a long period of time • Activate HEAT mode for 2~3 hours to remove moisture left in the internal parts thoroughly to prevent mould growth. [. . . ]