2.3.
Mounting of refrigerant heat exchangers
In the applications of the refrigerant heat
exchangers and in the applications in which the
medium phase transition takes place, the heat
exchanger should be mounted vertically according
to
Fig.4
.
Freezing of working media
in the heat exchanger
must be avoided!
During the mounting of the refrigerant heat
exchangers an anti-freeze thermostat and flow
control equipment should be used to ensure the
constant fluid flow before and after the start-up of
the compressor.
The technical condition of the pump should be
controlled to avoid its breakdown.
2.4.
Welding / brazing
D u r i n g t h e m o u nt i n g wo r k s t a ke i nt o
consideration a fire risk, e.g. keep the distance
from flammable substances in mind.
In case of welding / brazing the heat exchanger
should be protected against overheating around
the connections by heat absorbing components,
e.g. a cotton string soaked with water.
The refrigeration system should be silver-
brazed (min. 35% of silver); however, the
temperature cannot exceed 650°C/1200°F,
Fig.5.
Mounting
29
EN