Emerson Alco Controls CS1 Serie Instructions De Service

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.
The device has a potential ignition source and has not
been qualified according to ATEX standards. Installation
only in "non-explosive location".
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 or a specific training for
flammable refrigerants.
• 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 damage. Proper protective equipment
(gloves, eye protection, etc.) has to be used.
• Ensure that the system is correctly labelled with applied
refrigerant type and a warning for explosion risk.
• In a severely contaminated system, avoid breathing acid
vapours and avoid contact with skin from contaminated
refrigerant / lubricants. Failure to do so could result in
injury.
• 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, temperature, voltage and current.
• Ensure that the system piping is grounded.
• Before installation or service disconnect all voltages
from system and device.
• Observe and avoid mechanical damage of housing in
order to maintain protection class.
• 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 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.
• For flammable refrigerants only use valves and
accessories approved for it!
F u n c t i o n
Fig. 1: automatic reset function:
• 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.
Fig.1
M o u n t i n g l o c a 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 )
• CS1 controls 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!
T y p e C o d e
Product Name: CS1
High Pressure Single version
Function
W High Pressure limiter, automatic , DIN / EN 12263
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
Pressure Controls Series CS1
In order to achieve protection class IP33, 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 )
• When connecting CS1 to the hot gas line of a refrigeration
system, a pipe, capillary or flexible tube of at least 80 mm
shall be used to allow sufficient temperature drop between
refrigeration line and pressure switch bellows.
Threaded connection:
• Do not apply torsional load to pressure connector; use
second spanner to counter-balance torque when
tightening pressure connection.
• The CS1 is equipped with a snubber to dampen
pulsations.
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.
E l e c t r i c a l c o n n e c t i o n : ( F i g . 4 )
(1) Range spindle
(2) Differential spindle
• Entire electrical connections have to comply with local
regulations.
• Wire size must match the electrical load connected to
the switch contacts.
• 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 neighbouring parts .
• Feed cables through rubber grommet at switch bottom.
• Optionally, the rubber grommet may be replaced by a
standard PG 13.5 cable gland.
• Connect wires to terminals 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 screwdriver or a 1/4" refrigeration (square)
wrench to adjust setpoints as described below.
• Adjust upper setpoint using the range spindle. (Fig.4, (1))
• Adjust lower setpoint by turning the differential spindle.
(Fig.4, (2))
Upper setpoint – Differential = Lower setpoint
(1) Upper setpoint
(2) Lower setpoint
(3) Differential = constant
(4) Turning range spindle
CS 1 -
www.climate.emerson.com/en-gb
(3) Electrical terminals
(4) Check-out lever
(5) Cable entry grommet
(5) Upper setpoint
(6) Lower setpoint
(7) Differential = variable
(8) Turning differential spindle
⌂ ⌂ ⌂
Pressure Connection:
Pressure Range (bar)
OI_CS1_A1_A2L_EN_DE_FR_ES_IT_RU_Rev04_866914.docx
• A separate 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 Emerson catalogue or Technical Information
for standard factory settings.
C h e c k - o u t l e v e r : ( ( 5 ) F i g . 4 )
• Use the check-out lever to manually override the
electrical contact position for testing out the system.
S e r v i c e / M a i n t e n a n c e :
• Disconnect electrical power before service.
• Defective CS1 must be replaced, they cannot be
repaired.
• 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 :
Medium compatibility
Fluid Group II R410A, R744
Fluid Group I R32, R452B, R454B
Electrical rating for
A1 (A2L)
Resistive load (AC1) 24 A / 230 VAC (10 A / 230 VAC*)
Inductive load (AC15) 10 A / 230 VAC
(1 A / 230 VAC*; 10 A / 24 VAC*)
Inductive load (DC13) 0.1 A / 230 VDC (0.1 A / 230 VDC*)
3 A / 24 VDC (3 A / 24 VDC*)
6 A / 12 VDC (6 A / 12 VDC*)
Start-up (AC3) 144 A / 120 VAC / 230 VAC (-)
Motor rating (FLA) 24 A / 120 VAC / 240 VAC (-)
Locked rotor (LRA 144 A / 120 VAC / 240 VAC (-)
NOTE:
*) acc. IEC 60335-2-40 max. electrical load = 2.5 kVA.
Use proper fuse for short circuit case by considering
above voltages/currents.
Protection class IP33 (IEC 529/EN 60529)
Temperature range
TS
Storage / Transport -50 °C...+70 °C
Ambient -25 °C...+70 °C
Medium -25 °C...+150 °C
Max. allowable
pressure PS/ See Type code table
Test pressure PT
Vibration resistance
1 g (10...150 Hz)
(acc. EN 12263)
Max. relative humidity 95% non-condensing
Standards - 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
Markings
for devices under PED
0035
for devices under LVD
All types
pending
Dimensions See Fig. 2
A
7/16"-20 UNF male
PS PT
6 10...45 70 77 7
EN
during each periodic
PS PT
15...65 70 77
Date: 30.03.2022