12
ITEM
A-03-343
DATED
NOVEMBER 2012
SUPERCEDES
MARCH 2011
Fault
Possible Cause
Remedy
Leak between the HE plates.
Inadequate or excessive
compression dimension of the
heat exchanger.
• Compare the actual compression with the compression
dimension on the data plate, and correct as needed.
Too high working pressures.
• Compare the actual pressure with the design pressure on the
data plate.
Too high/too low working
temperatures.
• Compare the actual temperature with the design temperatures
on the data plate.
Gaskets fitted incorrectly.
• Open the heat exchanger and correct the gasket installation.
Gaskets are dirty.
• Open the heat exchanger and clean the gaskets.
Gaskets are defective or
hardened.
• Open the heat exchanger and replace the gaskets.
Leak between the heat
exchanger plates and the
frame.
Gaskets fitted incorrectly.
• Open the heat exchanger and correct the installation of the
gaskets.
Gaskets are dirty.
• Open the heat exchanger and clean the gaskets.
Gaskets are defective.
• Open the heat exchanger and replace the gaskets.
Damage to the heat
exchanger plates.
Overtightened plate packs
(compression dimension less
than “a min”).
• Replace heat exchanger plates and gaskets.
Corrosion of the heat
exchanger plate material.
• Check the design of the heat exchanger concerning flow-
through media; consult Aurora.
Leak between pipe connection
and the pressure plate.
Too high loads at the pipe
connection due to the pipe.
• Reduce connection loads.
Gasket fitted incorrectly.
• Loosen the pipe connection and correct the installation of the
gasket.
Gasket is dirty.
• Loosen the pipe connection and clean the gasket.
Gasket is defective.
• Loosen the pipe joint and replace the gasket.
Flange connection is not
sufficiently tightened.
• Check the gasket and connection and tighten any loose bolts.
Insufficient heat transfer.
Deposits on the heat
exchanger plates.
• Clean heat exchanger plates.
Flow paths, media etc.
changed from the original
design.
• Have the design of the heat exchanger with the new
operating data checked by Aurora.
Too high pressure loss.
Flow impeded by blockage
of the flow channels of the
distributor.
• Clean heat exchanger plates.
Flow impeded by incorrect
mounting of the heat
exchanger plates.
• Check the installation against the flow diagram.
INSTALLATION TROUBLESHOOTING GUIDE