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Alfa Laval Brazed Heat Exchangers
Protection against thermal or/and pressure fatigue
Sudden temperature and pressure changes could
cause fatigue damage to the heat exchanger.
Therefore, the following must be taken into
consideration to ensure that the heat exchangers
operate without swinging pressures/temperatures.
•
Locate the temperature sensor as close as
possible to the outlet from the heat exchanger.
•
Choose valves and regulation equipment which
give stable temperatures/pressures for the heat
exchanger.
•
To avoid water hammer, quick-closing valves must
not be used, e.g. on/off valves.
•
In automated installations, the stopping and
starting of pumps and actuation of valves should
be programmed so that the resulting amplitude
and frequency of the pressure variation will be as
low as possible.
Insulation
Heating and cooling insulations are available as
accessories.
Note: Be aware that temperature limits of insulation and the
heat exchanger can be different.
Troubleshooting
To ensure the correct performance of the heat
exchanger, check that:
•
the piping system has been connected to the heat
exchanger according to the instructions in this
manual
•
the heat exchanger is perfectly clean and free from
deposits.
Note: Particles and fibers could clog the heat exchanger. An
increase in pressure drop or a drop in thermal efficiency
indicates that the heat exchanger is fouled.
•
the control circuit is correctly preset and no
freezing occurs.
Cleaning
The equipment is suitable for cleaning in place. For
advice on suitable cleaning processes, consult the
representative of the supplier or visit the Internet site of
the supplier. The person responsible for operation
should ensure that the correct cleaning method is used
and should decide on suitable cleaning intervals.
Note: The plate package is not meant to be opened.
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Part number 340500021401
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