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5.13 - Troubleshooting
FLUID LEAKS BETWEEN PLATE PACK AND FRAME
PROBLEM : Leak detected at the bottom of the pack.
POSSIBLE SOLUTIONS
o Make sure that all the bolts are correctly tightened.
o Make sure that there is no mechanical stress on any of the connections.
o Reposition or replace the gasket on the starter or end plate.
o Check the internal surface of the fixed head for defects.
o Make sure that there are no foreign bodies between the starter plate and the fixed head.
o Test the starter/end plate for signs of damage (cracks, holes).
FLUID LEAKS BETWEEN CONNECTIONS AND FRAME
PROBLEM : Fluid leaks where a connection passes through the fixed head.
POSSIBLE SOLUTIONS
o If welded union couplings are used, check the condition of the welding.
o If cracks are found, contact your CIAT consultant before attempting any repairs.
o If other union couplings are used, contact your CIAT consultant.
FLUID LEAKS FROM THE PLATE PACK
PROBLEM : Leak detected from plate pack.
POSSIBLE SOLUTIONS
o Measure the tightening dimension and check it against the data plate. Tighten if need be.
o Mark the area around the leak with a felt-tip pen then open the heat exchanger and inspect the area.
o Check the sequence and alignment of the plates.
o Check the condition of the gaskets (correct position, overall condition, elasticity). Reposition or replace the plates as needed.
INTERNAL LEAKS WITH mixing of fluids
Contact your CIAT consultant as quickly as possible.
PROBLEM : The fluids in the heat exchanger are mixing together at the unit’s outlet.
POSSIBLE SOLUTIONS
o Make sure that the hydraulic connections are correct.
o Disassemble the heat exchanger and use penetrant liquids to check the entire surface of each plate for cracks and holes.
Replace any damaged plates.
INCREASED PRESSURE DROPS
PROBLEM : The pressure drop is higher than the design value.
POSSIBLE SOLUTIONS
o Check the accuracy of the measuring instruments used.
o Test the operation of the pumps.
o Dirt may be the cause. Clean the heat exchanger.
o Circulate the fluids in the opposite direction to remove any blockages in the pipes.
TEMPERATURE DRIFT
PROBLEM : The heat exchanger’s outlet temperatures do not correspond to the expected temperatures.
POSSIBLE SOLUTIONS
o Check the accuracy of the measuring instruments used.
o A build-up of dirt may be restricting the flow along the ducts and thus reducing the heat transfer capacity (drop in efficiency).
Clean the heat exchanger.
6 - DISPOSAL
- Disconnect the heat exchanger from its power sources and wait until it has cooled fully.
- Drain the heat exchanger and collect the fluids in accordance with environmental standards.
- Dispose of the plates in accordance with the prevailing legislation.
- Use the lifting devices employed when installing the heat exchanger.
- Check whether any part of the heat exchanger may be recycled for another purpose.
Materials:
Consult the documentation provided with the order for information on the materials used.
- Plates: stainless steel or titanium.
- Other metal components: carbon steel or stainless steel.
- Gaskets: NBR, peroxide-cured EPDM, Viton
®
, HNBR.
- Insulation or plate protection materials: stainless steel + ceramic or alu polyurethane panels.
Summary of Contents for ITEX NA 10.51 D
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