Operation
Start-up
During the start-up, check that there are no visible leakages from the plate pack, valves or piping
system.
CAUTION
Risk of leakage.
If the temperature of the plate heat exchanger is below the minimum temperature for the gaskets
prior to the service, it is recommended to heat the plate heat exchanger above this limit to avoid
cold leakage.
NOTE
If several pumps are included in the system, make sure you know which one should be activated
first.
Centrifugal pumps must be started with valves closed and the valves must be operated as smoothly
as possible.
Do not run pumps temporarily empty on the suction side.
NOTE
Adjustments of flow rates should be made slowly in order to avoid the risk of pressure surge
(water hammer).
Water hammer is a short lasting pressure peak that can appear during the start-up or shut-down
of a system, causing liquids to travel along a pipe as a wave at the speed of sound. This can
cause considerable damage to the equipment.
1
Check that the valve is closed between the
pump and the unit controlling the system flow
rate to avoid pressure surge.
2
If there is a vent valve installed at the exit,
make sure it is fully open.
3
Increase the flow rate slowly.
200001927-2-EN-GB14
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