Emerson Alco Controls PS4- ATEX Serie Betriebsanleitung

G e n e r a l i n f o r ma t i o n :
The Pressure Controls PS4-...ATEX are intended to
monitor the pressure and to act as a safety device.
The listed products are electrical operated switches
with ignition source and are in compliance with
EN 60079 / directive 2014/34/EU therefore rated /
marked as:
II 3G ExnA IIA T2Gc U
PS4-...ATEX must be installed in an appropriate
housing to protect them from mechanical damage or
shock.
!
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.
Flammable refrigerants require special handling
•
and care due to its flammability. Sufficient
ventilation is required during service of the
system. Contact with rapidly expanding gases can
cause frostbite and eye
protective equipment (gloves, eye protection, etc.)
has to be used.
In a severely contaminated system, avoid
•
breathing acid vapors and avoid contact with
skin from contaminated refrigerant / lubricants.
Failure to do so could result in injury.
Ensure that the system is correctly labeled with
•
applied refrigerant type and a warning for
explosion risk.
Make sure that the high pressure switch is
•
installed on high pressure side and low pressure
switch on low pressure side of system. Failure to
do will result in system without protection
against high and low pressure and consequently
risk of explosion and human injury.
Do not release any refrigerant into the
•
atmosphere!
Do not exceed the specified maximum ratings for
•
pressure, temperature, voltage and current.
Before opening any system make sure pressure in
•
system is brought to and remains at atmospheric
pressure.
Ensure that the system piping is grounded.
•
Before installation or service disconnect voltage
•
from system and device.
Observe and avoid mechanical damage of
•
housing in order to maintain protection class.
Ensure that design, installation and operation
•
are according European ATEX Directive, as well
as the according national standards / regulations
are respected.
I n s t a l l a t i o n ( F i g . 1 ) :
• PS4-...ATEX pressure controls should not be
exposed to gas pulsations. When pulsations can be
expected, use a pulsation damper or a capillary tube
connection (min. 1m).
• Mounting directions per Fig. 1 in order to prevent
the collection of contaminant in pressure sensing
element.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Pressure Controls PS4 Versions
released for R290 / R1270
Fig. 1
B r a z i n g ( 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.
damage. Proper
F i g . 2
P r e s s u r e t e s t :
• After completion of installation, a pressure test must
be carried out according to EN 378 for systems which
must comply with European pressure equipment
directive 2014/68/EU.
• The max. system test pressure shall be 30 bar for low
pressure side and 41 bar for high pressure side.
!
W a r n i n g :
• 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 tightness test according to EN 378-2 with
appropriate equipment and method to identify tightness
of external joints. The allowable leakage rate must be
according system manufacturer's specification.
!
E l e c t r i c a l c o n n e c t i o n :
Entire electrical connections have to comply with
•
local regulations.
Ensure that the cables are mounted without
•
tension; always leave the cable a bit loose.
Ensure that cables are not mounted near sharp
•
edges.
Do not bend or mechanically stress the cable
•
outlet, maintain a clearance of 20 mm to
neighboring parts.
!
O p e r a t i o n :
Perform a functional test of electrical circuit
•
before charging the system with refrigerant.
www.climate.emerson.com/en-gb
Operating Instructions
!
S e r v i c e / M a i n t e n a n c e :
Defective PS4-...ATEX must be replaced; they
•
cannot be repaired.
Disconnect electrical power before service.
•
The lowest pressure inside system must be at least
•
0.4 bar higher than ambient pressure at any time.
Failure to do so could accumulate air inside the
system and create an explosive mixture over time.
Before any debrazing ensure that the flammable
•
refrigerant is pumped out of the system and the
room around the system is well vented so no
refrigerant left.
T e c h n i c a l D a t a o f P S 4 - . . . A T E X :
Max. allowable working
pressure PS
Test pressure PT
Protection class (EN
60529)
Temperatures
Ambient (housing)
Storage / transportation
Medium
Released / compatible for
Electrical rating
50mA
Function
Pressure controls PS4-...ATEX are factory preset to
specific switch points (see label). The set points
cannot be modified.
Type of electrical contact Single pole single throw
Marking
- ENEC05 and CE according to PED
0035
2014/68/EU
- II 3G ExnA IIA T2Gc U
Only PS4-...ATEX types, listed in the following
table, are released for use with flammable
refrigerants!
Type Settings Part No.
808306
PS4-W1-0.2/1.4 bar ATEX
808308*
808314M
PS4-W5-ATEX 0.35/1.8 bar
808314*
808301
PS4-W1 0.6/1.8 bar ATEX
808303*
808312
PS4-W5 0.6/1.8 bar ATEX
808311*
808305
PS4-W1 18/24 bar ATEX
808304*
808300
PS4-W1 20/26 bar ATEX
808302*
808310
PS4-W5 20/26 bar ATEX
808309*
808315M
PS4-W5-ATEX 24/16 bar
808315*
808316M
PS4-W5-ATEX 32/24 bar
808316*
808317M
PS4-W5-ATEX 49/38 bar
808317*
808318M
PS4-W5-ATEX 51.5/40 bar
808318*
*) Singlepack
PS4-ATEX_OI_EN-DE_R07_0320_865178.docx
(see table below)
(see table below)
IP67
-30°C...+65°C
-30°C...+80°C
-35°C...+135°C
R290, R1270
. at 24VDC
max max
Pressure limiter, type
approval EN 12263,
PSL/PSH
(SPST)
PS PT
(bar) (bar)
22.7 25
22.7 25
22.7 25
22.7 25
37 41
37 41
37 41
37 41
50 55
63 69
63 69
Date: 10.03.2020