English Maintenance
16 Plate Heat Exchanger
eng
Pressure test after maintenance
Before start-up of production, whenever plates or
gaskets have been removed, inserted or ex-
changed, it is strongly recommended to perform a
pressure test to confirm the internal and external
sealing function of the PHE. At this test, one media
side at the time must be tested with the other side
open to the atmosphere.
The pressure testing shall be performed at a pres-
sure equal to the operating pressure of the actual
unit but never above the design pressure as stated
on the nameplate.
The recommended test time is 10 minutes.
Please note that PHE units for refrigeration appli-
cations and units with media not mixable with wa-
ter must be dried after hydrostatic pressure
testing.
Please consult the local office/representative of
the supplier for advice on the pressure testing pro-
cedure.
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