Optimal Water Reservoir Height for Automatic Washing Machines
When it comes to ensuring the proper functioning of an automatic washing machine, the height of the water reservoir plays a crucial role. This article delves into the minimum height requirements, the importance of water pressure, and the factors that influence overall performance.
The Role of Water Reservoir Height and Pressure
The minimum height for a water reservoir supplying an automatic washing machine is not fixed but depends on the machine's water pressure requirements. Most automatic washing machines operate with a water pressure of around 1 to 10 bar, which is equivalent to 14.5 to 145 psi. To achieve this, the reservoir should ideally be at least 1 meter (approximately 3.3 feet) above the washing machine for a minimum pressure of about 1 bar (14.5 psi).
Optimal Performance and Pressure Fluctuations
However, for optimal performance and to accommodate fluctuations in pressure, it is often recommended to have the reservoir at a height of 1.5 to 2 meters (5 to 6.5 feet) above the washing machine. This height helps maintain a consistent water supply and ensures the machine operates efficiently. This is especially critical in environments where water pressure can vary, such as in residential areas far from the main water source.
Comparison with Bathing Shower Heads
Other household appliances, such as bathing shower heads, require a specific water pressure to function effectively. Manufacturers specify a head of 3 Kgf/cm2 water pressure, which is approximately 100 feet of water head. However, these shower heads often work well with a lower head of around 20 feet. Similarly, automatic washing machines need a comparable head of water. A lower head will extend the time it takes to fill the drum to the required level and lengthen the cycle time specified by the manufacturer.
Minimum Water Flow and Tank Size
For any brand or make of automatic washing machine, a minimum water flow of about 20 liters per minute is required at a height of 1.0 meters (3.28 feet) above the top of the machine. The water tank should be a minimum of 75 to 100 liters for a 6 kg wash cycle to ensure a full wash cycle.
The Deciding Factor: Fill Time
The minimum height of the water reservoir is not as critical as the duration it takes for the machine to fill up. The internal limit set by the washing machine ensures that it does not suspend the cycle if it is not fully filled within a certain time. This time limit is typically around 180 seconds for a 45-minute wash cycle, allowing the machine to fill up two or three times. The fill time also depends on the pipe size, which is usually 1/2 inch (12mm). Even if the tank is at a greater height, such as on the second floor, it will not significantly reduce the fill time.
Understanding these key factors helps homeowners and businesses ensure their automatic washing machines are set up correctly for efficient and reliable operation. Whether a front load or top load, maintaining the right water pressure and fill time can enhance the overall performance of the machine, leading to better cleaning results and extended equipment life.