Emerson Alco Controls CVE Series Operating Instructions Manual

G e n e r a l i n f o r m a t i o n :
The CVE/ CVS series of Bi-directional Ball valves are
designed for general use in isolating suction, discharge and
liquid line pipe-work during maintenance shutdown periods.
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.
• This product is intended for use by qualified personnel
having the appropriate knowledge and skills like trained
according to EN 13313.
• 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 exceed the specified maximum ratings for
pressure and temperature.
• Do not use any other fluid media without prior approval
of EMERSON. Use of fluids not listed could result in:
- Change of hazard category
consequently change of conformity assessment
requirement for product in accordance with European
Pressure Equipment Directive 2014/68/EU.
• Ensure that design, installation and operation comply
with European and national standards/regulations.
• The attached strap (Fig. 3) contains important valve
data. Do not remove because of warranty and
traceability reasons.
• Do not connect on CVS Schrader connection any
safety pressure switches or other control devices.
M o u n t i n g l o c a t i o n :
• The CVE/ CVS valve may be installed in any position
which allows access to remove the stem cap. The valves
are bi-directional.
• Locate the CVE/ CVS as close as possible to the section
of pipe-work to be isolated. This will reduce the amount of
refrigerant to be recovered during future maintenance of
the system.
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.
• WARNING: Avoid damaging the connections!
• For CVS version do not mount schrader valve and cap
before brazing.
Emerson Climate Technologies GmbH
Pascalstrasse 65 I 52076 Aachen I Germany
O P E R A T I N G I N ST RU C T I O N S
Ball Valves Series CVE / CVS
• For installing the Schrader valve core use torque
0.4 – 0.5 Nm. Standard torque tool for Schrader valve
should be used.
• For panel mounting see dimension of holes in Fig. 4.
B r a z i n g : ( F i g . 1 )
• WARNING: Ensure valve is in the fully open
position before brazing (see Fig. 2a). Failure to do so
could cause damage to internal components.
• Perform 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.
• Do not exceed the max. surface temperature of
120 °C!
• 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.
of product and
• For CVS version install schrader valve and schrader valve
cap after cooling down of the ball valve.
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 2014/68/EU.
- to maximum working pressure of system for other
applications.
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
from joints and products. The allowable leakage rate must
be according system manufacturer's specification.
WARNING:
• Failure to pressure test or tightness test as described
could result in loss of refrigerant, damage to property
and/or personal injury.
• The tests must be conducted by skilled personnel
with due respect regarding the danger related to
pressure.
O p e r a t i o n :
• The Valve has a built-in stop for the stem and
opening/closing of the valve is clearly indicated as shown
in Fig. 3. Open Valve is shown in Fig. 2a and closed valve
in Fig. 2b.
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• WARNING: Never leave the ball position as
shown in Fig. 2c otherwise seat leakage can occur.
• To avoid operation by unauthorized person's valve can be
equipped with a sealable cap which is available as
accessory (see Fig. 5).
• The plastic cap is equipped with an O-Ring. Do not use
any tool to mount the cap. Cap must be closed hand tight
only.
WARNING: If the valve is installed in hot gas
discharge line, the valve has hot surface temperature
during operation of system or short after off-cycle.
S e r v i c e / M a i n t e n a n c e :
• Before starting repair work the internal R744 pressure has
to be reduced gradually to atmospheric; not more than
1 bar/min. Rapid decompression cause seal demage.
• According to EN 378-4
maintenance, tightness tests shall be carried out at the
relevant part of the refrigerating system. This shall apply
where appropriate following any repair.
T e c h n i c a l D a t a :
Type:
Connection
Max. allowable pressure PS 60 bar
Factory test pressure PT
Medium temperature TS
Fluid group (PED)
Hazard category (PED)
Medium
compatibility
Material
Dimensions
Markings
OI_CVE(S)_A1_A2L_EN_DE_FR_ES_IT_RU_Rev03_864199.docx
EN
during each periodic
CVE- / CVS-... ≤ 22 mm
(DN < 25)
1/4" (6 mm) ... 7/8" (22 mm)
66 bar
–40°C ... +120°C
II
SEP
Fluid Group II: R744
CW617N
See Fig. 6
Date: 02.09.2022