Emerson CX2 Betriebsanleitung

G e n e r a l i n f o r ma t i o n :
CX2 electronic Expansion valve is designed based on
Pulse width modulation concept.
Note: CX2 is released as expansion valve and during
operation of valve CO must be feed in liquid phase to
2
inlet of the valve.
S a f e t y i n s t r u c t i o n s :
• Read operating instructions thoroughly. Failure
to comply can result in device failure, system
damage or personal injury.
• According to EN 13313 it is intended for use by
persons having the appropriate knowledge and
skill.
• Before opening any system make sure pressure in
system is brought to and remains at atmospheric
pressure.
• Do not release any refrigerant into the
atmosphere!
• Do not operate the valve at atmospheric pressure.
• Ensure that the system piping is grounded.
• Do not use any other fluid media without prior
approval of EMERSON. Use of fluids not listed
could result in: Change of hazard category of
product and consequently change of conformity
assessment requirement
accordance with European pressure equipment
directive 14/68/EU.
• Ensure that design, installation and operation are
according to European
standards/regulations.
M o u n t i n g l o c a t i o n : ( s e e F i g . 1 )
• The CX2 should be installed in a position, which
allows the enclosing tube to be above the horizontal
axis (preferred: vertical position ± 45°). If the
enclosing tube is lower than the body of the valve,
particle may accumulate causing inconsistent
operation.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Electronic Expansion Valve CX2 for CO
• A filter drier mounted upstream of the valve is
recommended
contaminates.
I n s t a l l a t i o n :
• Do not remove seal caps until ready for installation in
order to minimize entering of moisture and dirt.
• The seal caps should be removed with care to avoid
damaging the extension tube connections.
• Direction of flow must match with arrow on valve
body.
• After Brazing open the valve to allow evacuation of
system prior to charging with refrigerant.
B r a z i n g : ( s e e F i g . 2 )
• Perform and consider the brazing joint as per
EN 14324.
• Before and after brazing clean tubing and brazing
joints.
• Minimize vibrations in the piping lines by
appropriate solutions.
• To avoid oxidization, it is advised to purge the
system with an inert gas such as nitrogen while
brazing.
• To avoid overheating it is advised to make the joint
at one end cool the device completely before
repeating the procedure on the other end connection.
• Do not exceed the max. body temperature of
for product in
100°C!
I n s t a l l a t i o n C o i l :
• For coil mounting please refer to corresponding coil
and national
operating instruction.
P r e s s u r e T e s t :
After completion of installation, a pressure test must be
carried out as follows:
- according to EN 378 for systems which must
comply with European pressure equipment
directive 14/68/EU.
- to maximum working pressure of system for other
applications.
www.emersonclimate.eu
Operating instruction
subcritical application
to protect the valve
Date: 10.03.2017
2
Warning:
against
• Failure to do so could result in loss of refrigerant
and personal injury.
• The pressure test must be conducted by skilled
persons with due respect regarding the danger
related to pressure.
T i g h t n e s s T e s t :
Conduct a tightness test according to EN 378-2 with
appropriate equipment and method to identify leakages
of external joints. The allowable leakage rate must be
according system manufacturer's specification.
O p e r a t i o n :
Note: CX2 is mainly designed for use in liquid line.
Prevent to operate the valve under vacuum condition or
lack of liquid refrigerant in system.
T e c h n i c a l D a t a :
• Maximum working pressure PS: 90 bar
• Test pressure PT: 129 bar
• Medium temperature: -40... +31°C
• Connection sizes (ODF):
CX2-I00 imperial: 3/8" inlet 1/2" outlet.
• Compatibility:
R744, Mineral, Alkyl benzene and ester lubricants
• Permissible coils:
ASC 24/230V, 50 Hz (AC)
MOPD Supply voltage
65 bar Nominal voltage
60 bar -5%
50 bar -10%
45 bar -15%
Note: MOPD values are valid only for 50 Hz supply
voltage operation.
• Marking: pending
CX2_OI_ML_R01_865913.docx