Oper ation
Operation
Start-up
During the start-up, check that there are no visible leakages from the plate pack, valves or
piping system.
Caution!
Before pressurizing the heat exchanger, it is important to ensure that the temperature of
the h eat exchanger is within the temperatu re range as stated in the PHE d rawing.
Caution!
If the temperatur e of th e heat exchange r is below the minimum temperature for the
gaske ts prior to the service, it is recommended to heat the hea t exchanger above this
limit to avoid cold le akage.
Note!
If several pumps ar e 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 operat ed 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 pres sure peak that can appear during t he start-up o r
shut-down of a system, causing liquids t o travel along a pipe as a wave at the speed of
sound. This can cause considerable damage to th e equipment.
Step 1
Before start- up, check that all the tightening bolts are firmly
tightened and that the dime nsion A is correct. Refer to the PH E
drawing.
Step 2
Check that the valve is closed between the pu
m p and the unit
controlling t he system flow rate to avoid pressur e surge.
Document ID La nguage Edition
3490010217 EN 2016-06 Instruction Ma nual - Plate Heat Exchan gers 15
EN
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