Preface English
3490008529 rev 2012-01 Plate Heat Exchanger
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Storage of the PHE
Alfa Laval delivers the PHE ready to be put in service
upon arrival, if nothing else has been agreed. Al-
though keep the PHE in the packing box until the in-
stallation.
Storage for longer periods of time, one month or
longer, certain precautions should made to avoid un-
necessary damages on the PHE.
If any uncertainty appear about storage of the PHE
consult an Alfa Laval Representative.
Storage in packing box
If storage after delivery of the PHE is known in ad-
vance, inform Alfa Laval when ordering the PHE to
ensure that it will be properly prepared for storage
before packing.
Indoor storage
• Storage inside room with temperature between
15 and 20 °C (60 - 70 °F) and humidity around
70 %. For outdoor storage read “Outdoor stor-
age” on this page.
• To prevent damage on the gaskets, there should
absolutely not be any ozone-producing equip-
ment in the room such as electric motors or weld-
ing equipment.
• To prevent damage on the gaskets, do not store
organic solvents or acids in the room and avoid
direct sunlight, intensive heat radiation or ultravi-
olet radiation.
• The tightening bolts should be well covered with
light grease coating.
Outdoor storage
If the PHE has to be storage outdoor all precaution in
section “Indoor storage” on this page should be
done. Also protection against climate is very impor-
tant.
The stored PHE shall be visually checked every third
month. The check includes:
• Greasing of the tightening bolts
• Metal port covers
• Protection of the plate pack and gaskets
Taken out of service
If the PHE is closed down and taken out of service for
for a longer period of time, for any reason, follow the
same advice as previous section “Indoor storage” on
this page. Although before storage following actions
has to be done.
• Check the measurement of the plate pack (meas-
ure between frame and pressure plate, A dimen-
sion).
• Drain both media sides of the PHE.
• Depending on media the PHE should be rinsed
and then dried.
• The connection should be covered if the piping
system is not connected. Use plastic or plywood
cover for the connection.
• Cover the plate pack with non-transparent plastic
film.
Installation after long time storage
In cases when the PHE has been taken out of service
for an extensive time, longer than one year, the risk
of leakage when starting up increases. To avoid this
problem it is recommended to let the gasket rubber
rest and get regain most of its elasticity.
1. If the PHE is not in position follow the instructions
“Installation” on page 10.
2. Note the measurement between frame and pres-
sure plate (A dimension).
3. Remove feet attached to the pressure plate.
4. Loose the tightening bolts. Follow the instruction
“Opening” on page 19. Open the PHE until the
measure is 1.25A.
5. Leave the PHE between 24-48 hours, the longer
the better, for gaskets to relax.
6. Re-tightening according to instruction “Closing”
on page 22 or “Pressure test after maintenance”
on page 23.
7. Alfa Laval recommend a hydraulic test to be car-
ried out. The media, usually water, should be
entered in intervals to avoid sudden shocks in the
PHE. It is recommended to test up to the Design
Pressure, refer to PHE drawing.
Note!
Alfa Laval and its representatives reserve the right to
inspect the storage space and /or equipment whenever
necessary until expiry of the warranty period stipulated
in the contract. Notification has to be given 10 days
prior to date of inspection.
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