Alfa Laval 34500021401 Manual De Instrucciones página 6

Alfa Laval Brazed Heat Exchangers
Requirements
Warning: The heat exchanger must be installed and
operated in such a manner that no risk of injury to
personnel and damage to property will be incurred.
Note: Unless otherwise specified, product data for normal
refrigerants, i.e. HFC and HCFC, are applicable to refrigeration
applications. Before the heat exchanger is used for flammable,
toxic or dangerous liquids (e.g. hydrocarbons) the relevant
safety rules for handling such liquids must be used. For further
information, please refer to the Internet site of the supplier.
Installation
The installation must be provided with equipment that
protects the heat exchanger against pressures and
temperatures outside the approved minimum and
maximum values shown on the nameplate.
Caution: To avoid hand injuries from sharp edges,
protective gloves should always be worn when
handling the brazed heat exchangers.
For best possible heat transfer performance, the heat
exchanger should be connected so that the media flow
through the heat exchanger in opposite directions (in
counter-flow)..
Note: Before connecting any piping, make sure all foreign
objects have been flushed out of the system.
Caution: Take into account the risk of fire during the
installation work, i.e. bear in mind the distance to
flammable substances.
Caution: Never lift by the connections. Straps should
be used when lifting. Place the straps according to
figure 1.
Note: In evaporator applications and in applications in which a
phase change of the media occurs, the heat exchanger must
be installed vertically with a straight pipe (at least 150-200 mm
in length) between the expansion valve and refrigerant inlet.
Mounting
In a rigid pipe system, small heat exchangers
(weighting 1–6 kg) can be suspended directly in the
pipework (Figure 2A). Larger heat exchangers should
be secured with support mountings (Figure 2D)
intended for a specific heat exchanger (accessory), or
be secured with straps (Figure 2C) or by means of
mounting bolts (Figure 2B). For special orders,
mounting bolts can be welded to the front or rear. The
tightening torque for M6 bolts is 3.8 Nm, M8 bolts is 9.5
Nm, and for M10 bolts 19.0 Nm.
Note: If there is risk of vibrations, use anti-vibration mountings
as shown in Figure 2A.
Note: Heat exchangers with refrigerant distributors should be
mounted with the distributor at the bottom.
Note: The pipework should be well-anchored and loads must
not exceed values according to the table "Limits for Connection
loads" on the inside of the cover page.
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Part number 340500021401