Alfa Laval Industrial Series, Instruction Manual

Page: 42 / 46

CAUTION
The recommended pressure for the leakage test is a pressure equal to the
operating pr 10% of the actual unit but never above the allowable
pressure (PS) as stated on the name plate.
WARNING
Testing by putting gas (compressible media) under pressure can be very
dangerous. Local laws and regulations regarding to the hazard involved in
testing with a compressible medium must be respected. Hazardous
examples are explosion risk due to uncontrolled medium expansion and/or
suffocation risk due to oxygen depletion.
WARNING
Any rebuilding or modification of the heat exchanger is the responsibility of
the end user. Regarding recertification and pressure test (PT) of the heat
exchanger the local laws and regulations for in service inspection must be
respected. Example of a rebuilding is that more number of plates are
added to the plate pack.
If there is any uncertainty about the testing procedure of the heat exchanger,
consult an Alfa Laval representative.
6.7 Regasketing
The procedures below concern field gaskets, ring gaskets and end gaskets.
NOTE
Before removing the old gaskets, check how they are attached.
6.7.1 Clip-on / ClipGrip
1
Open the heat exchanger, refer to Opening
on page 33, and remove the plate that is to
have a new gasket.
NOTE
Before opening the heat exchanger,
check the warranty conditions. If in any
doubt, contact the Alfa Laval sales
representative. Refer to
Warranty
conditions on page 7.
2
Remove the old gasket.
200000418-2-EN-GB 42
6 Maintenance EN