Haier PJF2-200 User Manual - Page 13

Cleaning and Servicing Cleaning and Servicing • Switch off the power supply before cleaning the storage water tank. Wipe it by the wet cloth with some neutral detergent, and then wipe to dry it by the dry cloth, to maintain the drying of the storage water tank case. • To maintain the continuous high-efficient operation of the water heater, it is necessary to clean the pipe heater and the liner every three years. Note that the protective layer shall not be damaged. • It is necessary to replace the magnesia rods in the storage water tank according to the difference of local water quality. • If the water heater is not used for a long time, it is necessary to drain the storage water tank and the solar collector circular pipeline respectively. „„ Drain the storage water tank 1 Close the inlet valve of the storage water tank. 2 Remove the end cap at the drain outlet. 3 Open the handle of the temperature pressure relief valve in the storage water tank. 4 Drain the water in the storage water tank from the drain outlet. „„ Drain the solar collector circular pipeline 1 Unscrew the feeding cap in the priming valve, and open two small cutoff valves, and then use the containers to collect the anti-freezing fluid flowing out. 2 If no anti-freezing fluid flows out from the small cutoff valves, close the large cutoff valves, and connect the inflation equipment outlet with one feeding port, to ensure the flow direction of the gas is consistent with the installation direction of the check valve. 3 Activate the inflation equipment until the anti-freezing fluid is blown out completely. Haier solar water heater 13