Maintenance
English
3490008529 rev 2012-01
Plate Heat Exchanger
-19
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Opening and closing
Opening
1
Shut down the PHE.
2
Close the valves and isolate the PHE from
the rest of the system.
3
Drain the PHE.
4
Remove the protective sheets, if any.
5
Dismantle pipes from the pressure plate
and the connections plate(s) so that the
pressure plate and the connection plate(s)
are free to move along the carrying bar.
6
Inspect the sliding surfaces of the carrying
bar and wipe clean and greased.
7
Mark the plate assembly on the outside by
a diagonal line.
8
Measure and note down the dimension A.
9
Loosen and remove the bolts as shown in
the figures below.
10
Use the remaining four bolts, equipped with
bearing boxes, to open the PHE. During the
opening procedure keep the frame plate
and pressure plate always in parallel.
Skewing of the pressure plate during open-
ing must not exceed 10 mm (2 turns per
Note!
Before opening the PHE check the warranty conditions.
If any doubt contact Alfa Laval sales representative.
Refer to
“Warranty conditions” on page 2
.
Warning!
If the PHE is hot, wait until it has cooled
down to about 40 °C (104 °F).
Warning!
If necessary use proper protective equipment, such as
safety boots, safety gloves and eye protection, depend-
ing on type of media in the PHE.
Note!
Brush the threads with a steel wire brush of the tighten-
ing bolts and then grease the threads before loosening
them.
Remove the bolts
