Emerson CS1 series Betriebsanleitung

G e n e r a l i n f o r m a 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.
F u n c t i o n :
• CS1 Pressure switches are equipped with SPDT snap
action contacts switching from 1-2 to 1-4 on rising
and from 1-4 to 1-2 on falling pressure. Reaching the
preset switch point on rising pressure, contact 1-2
opens while contact 1-4 closes and vice versa on
falling pressure.
Fig.1
M o u n t i n g d i r e c t i o n :
• Any direction except upside down.
I n s t a l l a t i o n ( F i g . 2 & 4 ) :
• CS1 may be installed by using a mounting plate or as
a wall-mounted device against a flat surface.
• Use universal thread M4 or UNC8-32 mounting
holes for installation via mounting plate.
• Use the standard mounting holes at the backside for
wall mounting.
• Use mounting screws supplied with control.
• Mounting screws must not penetrate control backside
by more than 8 mm to ensure proper operation.
• Do not use CS1 in pulsating operating conditions!
Minimize vibrations in the piping lines by
appropriate solutions.
• In order to achieve protection class IP44, the
following instructions must be observed:
- Cover must be closed and cover screw fastened.
- Control must be mounted against a flat surface so
that all openings on the housing backside are fully
covered.
- Cable grommet (Fig.4, No.5) is sealing the cable
entry to the housing
P r e s s u r e c o n n e c t i o n ( F i g . 3 ) :
• Do not apply torsional load to pressure connector;
use second spanner to counter-balance torque when
tightening pressure connection. High pressure
versions are equipped with a snubber to dampen
pulsations.
• When connecting CS1 to the hot gas line of a
refrigeration system, a pipe or high-pressure hose of
at least 80 mm shall be used to allow sufficient
temperature drop between refrigeration line and
pressure switch bellows.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Operating instruction
Pressure Controls Series CS1
P r e s s u r e t e s t :
After completion of installation, a test pressure must be
carried out as follows:
- according to EN378 for systems which must comply
with European pressure
2014/68/EU
- to maximum working pressure of system for regions
out of Europe
Warning:
• 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.
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.
• Wire size must match the electrical load
connected to the switch contacts.
• Feed cables through rubber grommet at switch
bottom (Fig.4, No.5).
• Optionally, the rubber grommet may be replaced by
a standard PG 13.5 cable gland.
• Connect wires to terminals (Fig.4, No.3) by taking
into account switch functions as shown in Fig.1
• Fasten terminal screws with torque 1.2 Nm max.
• Warning: CS1 might not be suitable for
connection to electronic controllers with low
electrical loads (voltage <24 V and current
<50 mA).
S e t p o i n t a d j u s t m e n t ( F i g . 4 & 5 ) :
• CS1 pressure switches come with individually
adjustable range and differential depending on the
exact model.
• Use a flat screw driver or a ¼" refrigeration (square)
wrench to adjust setpoints as described below.
• Adjust upper setpoint using the range spindle (Fig.4,
No.1).
• Adjust lower setpoint by turning the differential
spindle (Fig.4, No.2).
Upper setpoint – Differential = Lower setpoint
Fig.5a/5b
(1) Upper setpoint
(2) Lower setpoint
(3) Differential
(8) Turning range spindle
• A separate accurate gauge must be used for exact
adjustment of the setpoints. The integrated display
scale can only be used for obtaining approximate
settings. Maximum cut-out level must be as follows:
- System with single protection device: At PS of
system minus tolerances.
- System with two individual protection devices: At
0.9*PS of system.
• When changing the upper setpoint the lower setpoint
must be re-checked.
• Refer to the Technical Bulletin for standard factory
settings.
www.climate.emerson.com/en-gb
C h e c k - o u t l e v e r ( F i g . 4 , N o . 4 ) :
• Use the check-out lever to manually override the
equipment directive
S e r v i c e / M a i n t e n a n c e :
• Defective CS1 must be replaced, they cannot be
T e c h n i c a l d a t a :
Protection class
(IEC 529/EN 60529)
Ambient temperature
(housing)
Max. relative humidity
Storage / transportation
temperature
Medium temperature TS
Vibration resistance
(acc. EN12263)
Electrical rating
Medium compatibility
Standards:
Marking:
•
•
T y p e c o d e :
e.g.CS1- W 6 A


Pressure setting
range
6 = 10...45 bar
7 = 15...65 bar
(5) Upper setpoint
(6) Lower setpoint 
(7) Differential = variable
(9) Turning differential spindle
Date: 25.10.2018
electrical contact position for testing out the system.
repaired.
95% non-condensing
Resistive load (AC1)
Inductive load (AC15)
Inductive load (DC13)
Use proper fuse for short circuit case by considering
above voltages/currents
R744, R410A
• EN 12263
• PED 2014/68/EU, Category IV for all devices
with TÜV approval under EN12263
• LVD 2014/35/EU, EN 60947-1, EN 60947-5-1
0035 marking for devices under PED
marking for devices under LVD
  
CS1–
Function
W = High Pressure limiter, automatic,
TÜV/ EN12263 approval (PSH)
Pressure range
Max. allowable
Pressure (PS)
70 bar
70 bar
Pressures are relative (gauge pressure).
Pressure connection (Fig. 3)
A=7/16"-20 UNF male
CS1_OI_ML_R01_866914.docx
IP44
-25°C...+70°C
-50°C...+70°C
-25°C...+150°C
1g (10...150 Hz)
24A / 230V AC
10A / 230V AC
0.1A / 230V DC
1A / 24V DC
2A / 12V DC
Test Pressure
(PT)
77 bar
77 bar