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Idiomas disponibles
Idiomas disponibles
6
then drop below the brine freezing point, which could
damage the evaporator.
– Use a flow switch and a low-pressure switch.
Control and operation
The following should be borne in mind to ensure
that the heat exchanger will operate satisfactorily
and have the longest possible useful life.
– Locate the temperature sensor as close as possible to
the outlet from the heat exchanger.
– Sudden temperature and pressure changes could
cause fatigue damage to the heat exchanger. To
ensure longest possible lifetime for the BHE, it is impor-
tant to dimension and choose valves and regulation
equipment which give stable temperatures in the unit.
With stable regulation and temperatures, the lifetime
will not be limited due to fatigue.
– To avoid water hammer, do not use quick-closing
valves. On/Off control by pressure pulses through the
heat exchanger should not be employed.
– Do not use the heat exchanger for media (e.g. de-
ionized water)/installations (e.g. galvanized pipes) that
(chemically/electrochemically) could affect or be
affected by the plates (Stainless steel) and the brazing
material (Copper).
Insulation
Specially designed insulation is available as an acces-
sory. Airtight insulation is recommended and is necessary
if the heat exchanger is used as an evaporator at low tem-
peratures.
Troubleshooting
To ensure correct performance of the heat exchanger,
check that:
– the connection has been correctly made as shown in
this manual
– the heat exchanger is perfectly clean and free from
deposits. 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 representa-
tive 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.
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