How to Use a High Pressure Washer in Winter

Wiki Article

Although high-pressure washers offer many advantages, in northern regions, the cold winter temperatures pose a significant risk. If residual water remains in the outlet hoses or pumps of the equipment, it can easily freeze and damage the rubber hoses or plunger pumps. In severe cases, this can even render the high-pressure washer completely unusable, bringing cleaning operations to a halt and creating serious problems. On the other hand, low water temperatures in winter can also compromise cleaning effectiveness. Therefore, to ensure the proper operation of high-pressure washers in northern areas, it is crucial to address the issue of anti-freezing and anti-congealing effectively.

To balance the requirements of cleaning efficiency and anti-freezing protection for high-pressure washers, anti-freezing and anti-congealing measures should be implemented from three aspects: first, preheating the inlet water before supplying it to the high-pressure washer; second, adding thermal insulation and anti-freezing protection to the main unit casing; third, optimizing and improving the operating procedures to ensure cleaning performance in winter and minimize the risk of residual water in pumps, valves, and other components after shutdown. Below are the detailed specifications for the inlet water preheating methods of high-pressure washers.

1. Elevated Water Tank Type

The elevated water tank type involves heating the water in the tank before delivering it to the high-pressure washer. A positive pressure is sufficient to meet the inlet water pressure requirements of the equipment.

The process flow of the elevated water tank type is as follows: fresh water flows into the elevated water tank, then passes through a filter and connects to the inlet of the high-pressure washer. A steam heating coil or electric heating tube is installed inside the water tank for heating. A temperature sensor can be interlocked with the steam inlet valve, which will close automatically when the water temperature reaches 38℃.

2. Heat Exchanger Type

As the name suggests, the heat exchanger type heats the water via a heat exchanger before it enters the high-pressure washer.

The process flow of the heat exchanger type is as follows: fresh water passes through the heat exchanger, then goes through a filter and connects to the inlet of the high-pressure washer. The heat exchanger uses steam for heat exchange. A temperature sensor is installed at the water outlet and interlocked with the steam inlet valve to control its opening and closing.

3. Inlet Pipe Electric Tracing Heating Type

The inlet pipe electric tracing heating type regulates the inlet water temperature by controlling the electric tracing heating system based on the water temperature inside the pipe.

The specific process flow is as follows: electric tracing heating cables are wrapped around the inlet pipeline of the high-pressure washer, and a temperature control system is added to activate or deactivate the heating cables according to the temperature inside the pipeline.

All three methods mentioned above can effectively solve the problem of inlet water preheating for high-pressure washers. The specific method to be adopted should be determined based on on-site conditions. After the cleaning work is completed, it is essential to blow out all residual water from the equipment to prevent freezing and cracking.

The article is sourced from China-US Trade Network