Emerson Vilter VSH, Инструкция по установке, эксплуатации и обслуживанию

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10 DKRCI.PI.FT0.C4.02 / 520H5450 © Danfoss A/S (AC-MCI/MWA), 2012-12
ENGLISH
Installation
Refrigerants
Applicable to HCFC, non flammable HFC,
R717 (Ammonia) and R744 (CO
2
).
The use of ICF valve stations with flammable
hydrocarbons is not recommended.
The ICF is only recommended for use in
closed circuits. For further information
please contact Danfoss.
Temperature range
–60/+120°C (–76/+248°F)
Pressure range
The ICF is designed for a max. working
pressure of 52 bar g (754 psi g).
Technical data
The ICF can be used in suction, liquid,
hotgas and liquid/vapor lines. The ICF are
available with 4 or 6 function modules. The
ICF regulates the flow of the medium by
modulation or on/off function, depending
on function modules installed on the ICF.
Regulating range
Dependent on the chosen type and
combination of modules installed in the
valve.
Installation
The ICF must be installed according to
fig. 1. The ICF must be installed with the
arrow in the direction of the flow).
The ICF will be delivered with all the
function modules fully assembled. The
modules can be taken off for service
or inspection and may be rotated 4 x
90° in relation to the valve body upon
installation.
The ICF may be fitted with a spindle for
manual opening of the solenoid valve.
The ICF 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 ICF is protected
from pressure transients like “liquid
hammer” in the system.
Welding
The ICF valve station can be welded by
using either TIG/MIG/SMAW welding (fig. 2)
or gas welding (fig. 3).
Attention!
It is not necessary to remove any of the
modules before TIG/MIG/SMAW welding;
however, it must be ensured that the
valve is cooled during the welding ( e. g.
by wet cloth) and that the ICF is protected
against weld splatter. Inlet and outlet stop
valves must be closed all the time before
commissioning in order to protect ICF
against rust formations.
The ICF valves are delivered with closed
stop valves.
During Gas welding the modules must be
removed.
Avoid welding debris and dirt in the
valve body and the function module.
The housing must be free from stresses
(external loads) after installation. The
ICF must not be mounted in systems
where the outlet side of the ICF is open
to atmosphere. The outlet side of the ICF
must always be connected to the system
or properly capped off, for example with a
welded-on end plate.
Surface protection and identification
The external surface is zinc-chromated to
provide corrosion protection according
to EN 12284:2003 8.13. The Zinc-
Chromatization does not cover the welding
connections. After installation has been
completed the external surface of the valve
must be protected against corrosion with a
suitable top coating.
Protection of the ID label when painting
the ICF is recommended.
Precise identification of the ICF is made via
the ID label on each of the 4 or 6 function
modules.
Maintenance
Service
The ICF valve stations are easy to service.
Do not open the ICF while the it is still
under pressure.
Debris blocking the bolt hole will need
cleaning. Upon opening and removal of
the function modules:
- Check that the O-rings on the function
module has not been damaged.
A valve with a damaged o-ring might
not modulate according to the
specification.
For both ICF 20 and ICF 25 - 40 with ICM
Please Note:
When used in CO
2
, the o-rings
(see fig.4) on the ICM and ICFE
25-40 modules can swell (grow).
At service it is recommend that new o-rings
are installed, before the ICM function
module is reinstalled in the ICF valve body.
- Check that the piston and cylinder is
free of scratches and look for wear
marks. If the wear is excessive the
function module should be replaced to
prevent false pilot signal around the
piston ring.
- Check that the movement of the
cylinder and valve seat is free and with
low friction.
- If the teflon valve plate has been
damaged, the function module must be
replaced.
- On ICM 20 motor valve modules check
that the PEEK seat has not been
damaged or scratched. If damaged or
scratched; replace the PEEK seat.
Assembly
Remove any dirt from the housing before
the ICF is assembled.
- Check that all channels in the ICF
are free of particles or similar debris.
If possible, apply some refrigeration oil
to ease the insertion of the modules and
to protect the O-rings.
Tightening (fig. 5)
Tighten the top cover with a torque
wrench, to the values indicated in the
table.
Use only original Danfoss parts, including
O-rings and gaskets for replacement.
Materials of new parts are certified for the
relevant refrigerant.
In cases of doubt, please contact Danfoss.
Drawings are only for illustration, not for
dimensioning or construction. Danfoss
accepts no responsibility for errors and
omissions.
Danfoss Industrial Refrigeration reserves
the right to make changes to products and
specifications without prior notice.