5.2 Unit in operation
Adjustments of flow rates should be made slowly in order to protect the
system against sudden and extreme variations of temperature and pressure.
During operation, check that media temperatures and pressures are within the
limits stated on the name plate and the PHE drawing.
WARNING
In case of failures that endanger safety operation, turn off the flows to the
plate heat exchanger in order to decrease the pressure.
5.3 Shut-down
NOTE
If several pumps are included in the system, make sure you know which one should be stopped
first.
1
Slowly close the valve controlling the flow
rate of the pump you are about to stop.
2
When the valve is closed, stop the pump.
3
Repeat the two steps for the other side for the
second media. Continue with both sides of
each section.
4
If the plate heat exchanger is shut down for
several days or longer, it should be drained.
Draining should also be done if the process is
shut down and the ambient temperature is
below the freezing temperature of the media.
Depending on the media processed, it is also
recommended to rinse and dry the plate heat
exchanger plates and connections.
NOTE
Avoid vacuum in the plate heat
exchanger by opening vent valves.
200000420-4-EN-GB
47
Operation 5
EN