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. Provides maximum comfort with optimal energy saving methods. [. . . ] Leak detection methods The following leak detection methods are deemed acceptable for all refrigerant systems. € No leaks shall be detected when using detection equipment with a capability of 10−6 Pa· M3/s or better, for example, a helium sniffer. € Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need recalibration. (Detection equipment shall be calibrated in a refrigerant-free area. ) • 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. OFN = oxygen free nitrogen, type of inert gas. 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. € This process may need to be repeated several times. € Compressed air or oxygen shall not be used for this task. € 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. [. . . ] 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. NON SERVICEABLE CRITERIAS TURN OFF THE POWER SUPPLY AND UNPLUG then please consult an authorised dealer when in following conditions: • Abnormal noise during operation. € Water/foreign particles have entered the remote control. [. . . ]