© Danfoss A/S (AC-SMC/MWA), 06-2010
DKRCI.PI.FN0.A5.52 / 520H0583
3
ENGLISH
Installation
Refrigerants
Applicable to all common refrigerants,
including R717 and non-corrosive gases/
liquids dependent on sealing material
compatability.
The filter is only recommended for use
in closed circuits. For further information
please contact Danfoss.
Pressure and temperature range
–60/+150°C (–76/+302°F)
FIA 15-300:
The filters are designed for a max. working
pressure of 40 bar (580 psi g)
FIA 15-65 (special), FIA-SS 15-65:
The filters are designed for a max. working
pressure of 52 bar (754 psi g)
FIA 80-200 (special), FIA-SS 80-200:
The filters are designed for a max. working
pressure of 50 bar (725 psi g)
FIA 15-300, FIA 15-200 (special), FIA-SS:
The filters are designed for a max. working
pressure of 40 bar (580 psi g)
Installation
The filter must be installed with the top
cover downwards, and the flow must be
directed towards the top cover as indicated
by the arrow on the filter housing (fig. 1).
The filter element must be inserted after
welding.
The filter is designed to withstand a high
internal pressure. However, the piping
system should be designed to avoid liquid
traps and reduce the risk of hydraulic
pressure caused by thermal expansion. It
must be ensured that the filter is protected
from pressure transients like “liquid
hammer” in the system.
Recommended flow direction
The filter must be installed with the flow
towards the top cover as indicated by the
arrow on the side of the valve body (fig.
1). Flow in the opposite direction is not
acceptable.
Welding
The top cover should be removed before
welding (fig. 2) to prevent damage to
the gasket between the filter body and
top cover. Only materials and welding
methods, compatible with the valve
housing material, must be welded to the
valve housing. The filter should be cleaned
internally to remove welding debris on
completion of welding and before the
valve is reassembled.
Removing the top cover can be omitted
provided that:
The temperature in the area between the
valve body and top cover during welding
does not 150°C/+302°F. This
temperature depends on the welding
method as well as on any cooling of the
filter body during the welding itself.
(Cooling can be ensured by, for example,
wrapping a wet cloth around the filter
body.) Make sure that no dirt, welding
debris etc. get into the filter during the
welding procedure.
The filter housing must be free from
stresses (external loads) after installation.
Filters must not be mounted in systems
where the outlet side of the filter is open
to atmosphere. The outlet side of the filter
must always be connected to the system
or properly capped off, for example with a
welded-on end plate.
Assembly
Remove welding debris and any dirt from
pipes and filter body before assembly.
Check that the filter element has the right
size before it is inserted in the top cover
And check that there is no damage on the
gasket.
Place the filter element (pos. D) from
underneath. The element has a slight force
fit into the housing, no gaskets or O-rings
are used.
If magnets have been chosen as accessory,
these should be fitted on the top cover
before replacing the cover.
Tightening
Tighten the top cover with a torque
wrench, to the values indicated in the table
(fig. 3).
If the drain valve has been chosen as
accessory, the drain plug should be
replaced by the drain valve.
Colours and identification
The FIA valves are painted with a red oxide
primer in the factory. Stainless steel valves
are not painted. Precise identification of
the valve is made via the ID plate on the
top cover, as well as by the stamping on
the valve body. The external surface of the
valve housing must be prevented against
corrosion with a suitable protective coating
after installation and assembly.
Protection of the ID plate when repainting
the valve is recommended.
FIA-SS filters are not painted and do not
require any protective coating.
Maintenance
Mounting of accessory:
Filter bag (fig. 4)
A 50µ filter bag (pos. E), especially for
commissioning of the plant, can replace
the normal filter element.
When mounting the filter bag, which is
held in place by a filter holder, the utmost
care must be taken to place the filter bag
correctly in the filter as shown in fig. 4.
The flow must go into the filter bag cavity
and out or else the bag will not function
properly.
Above described function will only be valid
depending that the proper flow direction
of the filter valve has been used.
Dismantling the valve (fig. 3)
Before servicing the filter valves, isolate it
from the system and remove all refrigerant
by evacuation to zero pressure. check for
refrigerant pressure before unscrewing and
removal of the top cover.
The filter element should be removed
without any use of tools
Cleaning
Clean the filter element using an
appropriate solvent by flushing and
brushing. The use of strong acids cannot be
recommended. the filter element should
be wiped or blown dry before inspection. If
the element is damaged or the sediments
cannot be removed, the filter element
should be replaced.
Assembly
Remove any dirt from the body before the
valve is assembled.
Replacement of gasket
It is recommended to always change the
gasket for the top cover (pos. C) and drain
plug.
Check that the filter element is correctly
placed before remounting the top cover
and bolts (pos. A).
Tightening (fig. 3)
Tighten the top cover bolts (pos. A) with
a torque wrench according to the table in
fig. 3
Use only original Danfoss parts, including
gaskets for replacement. Materials of
new parts are certified for the relevant
refrigerant.
In cases of doubt, please contact Danfoss.
Danfoss accepts no responsibility for
errors and omissions. Danfoss Industrial
Refrigeration reserves the right to make
changes to products and specifications
without prior notice.
Note:
At delivery the filter housing
is not equipped with filter
element or accessories
www.danfoss.com/IR
Содержание FIA 15-300
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