MTS Water Quality Guide - Manual (Page 22)

Heat Exchanger Care and Water Quality Guide 22 Troubleshooting
Troubleshooting
Symptoms Corrective Action
HPU won't cool (hydraulic
fluid-to-water models) • Verify the proper water connections:
IN
→IN
OUT
→OUT
• Verify that the water temperature vs. flow rate is correct for your
model of HPU (refer to the MTS Hydraulic Power Supply Product
Manual that came with your system).
• Verify that the operation of the water saver valve is correct. Adjust it
if necessary (refer to the instructions in the MTS Hydraulic Power
Supply Product Manual that came with your system).
Heat exchanger is plugged • Perform a mechanical cleaning
• Perform a chemical cleaning as needed
• Install a filter in the cooling water inlet line to prevent the buildup of
sediment
• Ensure that you are using clean cooling water
Heat exchanger leaks
externally • Inspect the heat exchanger for signs of corrosion
• Repair the leak
• If the leak occurs at a fitting, it may be loose. Remove the fitting,
inspect it and repair or replace it as necessary. Re-install the fitting,
being careful not to over tighten it.
Heat exchanger leaks
internally • Disassemble the heat exchanger
• Conduct a pressure test to determine the location of the leak
• Repair the leak if possible, or replace the heat exchanger