| |
| Illustration 1 | g00655851 |
|
Heat exchanger | |
Debris in the water will reduce the efficiency of the heat exchanger. This can result in excessive water temperatures that may require an engine shutdown.
The quality of the water can also affect the performance of the heat exchanger. Buildup such as sediment and scale reduces the heat transfer characteristics of the plates. The pressure differential of fluids that flow through the heat exchanger is increased. Corrosion can occur beneath the buildup. The buildup can result from sources that are organic and/or inorganic.
The combination of the following two factors indicate that the heat exchanger requires cleaning:
- Inability of the heat exchanger to maintain the temperatures that are desired
- Increased pressure differential of the fluids that flow through the heat exchanger
Frequently record these parameters during operation:
- Aftercooler inlet water temperature
- Inlet manifold air temperature
- Jacket water temperature
- Pressure differential of the fluids that flow through the heat exchanger
Compare the data to previously recorded data. Clean the heat exchanger, if necessary.
Cleaning the heat exchanger involves the following procedures:
- Draining the heat exchanger
- Disconnecting the coolant lines
- Opening the heat exchanger
- Cleaning the plates of the heat exchanger
- Closing the heat exchanger
- Connecting the coolant lines
- Filling the cooling system
| NOTICE |
|---|
|
The use of some chemicals in cleaning solutions can cause corrosion and damage to some components. For the proper cleaning solutions, follow the recommendations that are provided by the OEM of the heat exchanger. |
Usually, the plates inside the heat exchanger can be cleaned with a soft brush and running water. When the plates are cleaned, be careful not to damage the gaskets.
Different types of buildup may require different cleaning solutions. To determine the cause of the buildup, obtain an analysis of the material and the water. Consult the OEM of the heat exchanger in order to determine the proper method of cleaning to use. Service the heat exchanger according to the instructions that are provided by the OEM of the heat exchanger.