Maintenance of electrical parts (pump/transformer/sensors/switches) Addressing leaks and replacing connections, seals, and rubber gaskets Measuring salts (TDS) + checking water quality before/after Replacing filters for all stages (5/6/7 stages) according to your device Replacing the RO membrane when performance weakens Sterilizing and cleaning the device and lines (as needed) Adjusting water pressure and installing/replacing the pressure regulator when needed Installing and replacing the water purifier faucet and its accessories Installing and replacing the tank (and checking its pressure) when needed Replacing hoses and extending the water line neatly Disassembling, moving, and reassembling the device when relocating Repairing weak water flow or changes in taste/odor (diagnosis and solution) Providing new water purification devices (multiple options) Maintenance of water purification stations (diagnosis, repair, adjustment) Replacing station filters (according to station type and stages) Cleaning/replacing station hoses, valves, and faucets Connecting the water purification device to the water cooler and extending a line to the refrigerator/water cooler safely Installing/replacing the pre-filter for the device (for better protection) when needed Following the periodic maintenance schedule and reminding about filter changes (optional)