Emerson Alco Controls CS3 series Betriebsanleitung

G e n e r a l i n f o r ma t i o n :
For application in refrigeration systems in compliance
with standard EN 378.
A professional and appropriate storage and allocation
of the devices is mandatory.
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.
• Before installation or service disconnect all
voltages from system and device.
• Do not exceed the specified maximum ratings for
pressure, temperature, voltage and current.
• Keep temperatures within nominal limits. Switch
housing temperature must not exceed 70°C in
high medium temperature applications.
S e t t i n g :
• CS3 Pressure switches are factory preset to a
specific value (see label).
• Note: Cut-in/cut-out and differential may not be
readjusted by the customer (otherwise product
looses warranty).
F u n c t i o n / T y p e o f s w i t c h : ( F i g . 1 & 2 )
Fig. 1: Pressure switch with automatic reset
Fig. 2: High pressure cut-out (manual reset)
F i g . 1 F i g . 2
4
1
1
2
+ +
P
P
-
-
CS3 with automatic reset:
CS3 Pressure switches are equipped with a SPDT
snap action contact switching from 1-2 to 1-4 on
rising and from 1-4 to 1-2 on falling pressure.
CS3 with manual reset:
Reaching the preset switching point contact 1-2
opens and latches. After the pressure drops by
appr.13-25 bar depending on pressure range the
switch can be reset by pushing the reset button.
Emerson Climate Technologies GmbH
Holzhauser Str. 180 I 13509 Berlin I Germany
Pressure Switch Series CS3
I n s t a l l a t i o n :
• Mounting direction: any
• Do not apply torsional force to housing assembly
during mounting (Fig. 3).
P r e s s u r e c o n n e c t i o n : s e e F i g . 3

= Copper gasket
E l e c t r i c a l c o n n e c t i o n :
Note: Entire electrical connections have to comply
with local regulations. To maintain IP65, proper
installation is mandatory.
Connection with cables PS3-Nxx/-2xx/-4xx
(Fig.4 & 5):
bk = black;
− Plug meets requirements of DIN 40050/IEC 529/
EN60529.
− Plug has an integrated gasket.
− Fasten screw with max. torque 0,05Nm.
− Plug cannot be repaired, in case of failure replace
product.
− Only one mounting position is possible.
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:
–
–
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
4
persons with due respect regarding the danger
2
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
specification.
M a i n t e n a n c e / S e r v i c e :
In case of repair work or replacing the control always
use new gaskets (Fig 3 –
www.emersonclimate.eu
Operating instruction
bl = blue; br = brown
according to EN 378 for systems which
must comply with European pressure
equipment directive 97/23/EC.
to maximum working pressure of system
for other applications.
according system manufacturer's

).
Date: 23.07.2015
T e c h n i c a l d a t a :
• Protection class (EN 60529):
IP65 with PS3-Nxx
IP00 (w/o appliance socket)
• Ambient temperature (housing): -40°C...+70°C
For high temperature applications, i.e. medium
temperatures between 70°C and 150°C, the
maximum ambient temperature must be derated
as per drawing.
(see Fig. 6;
Tm = Medium temperature,
Ta = Ambient temperature
E.g.: On medium temperature 120°C the ambient
temperature of 55°C around the switch housing
should not be exceeded.
• Storage and transportation temperature:
• Medium temperature:
• Max. working pressure PS:
• Test pressure PT:
• Vibration resistance:
• Electrical rating - Standard / Micro-switch:
Inductive (AC15):
Locked rotor (LRA, AC3):
For electronic applications with low electrical loads
(current <100 mA) standard contacts are not
suitable.
• Medium compatibility:
• Marking:
acc. Low Voltage Directive
acc. to PED 97/23/EC
0035
T y p e c o d e :
  
CS3 -
e.g. CS3 – W 8 S

Function
B = Pressure cut out, external manual reset,
type approval, EN 12263, PZH
S = Safety pressure cut out, internal manual reset,
type approval, EN 12263 PZHH
W = Pressure limiter, automatic, type approval,
EN 12263, PSH
NOTE: Function types B or S protect against high
pressure

Pressure Max. allowable
setting Pressure
range (PS)
7/P = 40...70 bar 90 bar
8/Q = 60...140bar 140 bar
NOTE: 7/8 Standard contacts
P/Q Microswitch

Pressure connection
S = 7/16"-20 UNF female with schraeder opener,
(with snubber)
CS3_OI_ML_R01_0718303.docx
)
-40°C...+70°C
-40°C... +150°C
Range 7/P: 90 bar
Range 8/Q: 140 bar
Range 7/P: 100 bar
Range 8/Q: 154 bar
4g (at 10...250 Hz)
3A/1.5A; 230V AC
36A/15A; 230V AC
CO2 (R744)
Test
Pressure
(PT)
100 bar
154 bar