Parker CEV-S User Manual

EN - USER’S MANUAL
DE - HANDBUCH
FR - MANUEL D’UTILISATION
IT - MANUALE UTENTE
ES - MANUAL DE USUARIO
CEV-S
CEC
Unipolar Electric Expansion Valve
Einpoliges elektronisches Expansionsventil
Détendeur électronique unipolaire
Valvola di espansione elettrionica unipolare
Válvula de expansión electrónica unipolar
RE1.U.9T1.CEV-S.ML.1.2019.5
1 of 15
EN – Original instructions
The User’s manual is an integral part of the product. It is the User’s responsibility to keep this documentation available
at any time (including transportation, reselling, etc.), to allow for its consultation during the entire equipment lifespan.
The present manual is addressed to skilled and expert technicians.
The product shall be employed only if it has been properly installed and it is free from damages.
ATEX rated products shall only be handled by skilled personnel according to IEC 60079-17.
Specic instructions in the User’s manual impacting or covering ATEX rated products are marked with the
symbol
for easy identication.
RESIDUAL RISKS
 High velocity or high-pressure uid discharge.
 Surfaces that may become very hot or very cold.
 Contact with conveyed uids that may be hot, cold, toxic or otherwise injurious.
 Sparking or explosion caused by static electricity build-up or other sources of electricity.
 Sparking or explosion from ammable liquids.
In case of doubts or for any further information needed, always consult the complete User’s manual or contact your most
convenient Parker Hannin representative.
1. FOREWORD
The present instruction manual refers to the CEV-S Series electric expansion valves and to their related CEC Series
motor stators. This manual covers all the versions indistinctly.
2. PRODUCT INFORMATION
Consult the product catalogue “RE1.C.9T1.CEV-S.UK” for complete information about the product.
2.1. PRODUCT IDENTIFICATION
Each valve body and stator is indelibly marked, to provide useful information for model identication and servicing.
Refer to these data when contacting our Customer Service.
1 Valve model 1 Coil model
2 Date code 2 Date code
3 Manufacturing plant
3. USE
3.1. PROPER USE
The purpose of the CEV-S Series valve is to be permanently installed in a vapour compression refrigeration appliance,
with or without reverse cycle features, as the expansion (lamination) element to reduce the condensing pressure down
to the value of the evaporating pressure. The CEV-S valve body must be securely coupled to one of the available CEC
Series stator, connected to a properly designed control system.
Bi-ow feature
Direct ow Reverse ow
OPERATIVE LIMITS
MWP / PS 45 bar(g)
Fluid temperature -40 / +85°C
Ambient temperature -40 / +85°C
Admitted refrigerants R134a, R410A, R407C, R290, R32, R448A, R449A, R452A, R452B, R454A, R454C, R513A
Special requirements for ATEX products:
Fluid temperature limits (with ATEX coil) -30 / +70°C
Ambient temperature limits (with ATEX coils) -30 / +70°C
ATEX marking II 3G Ex ec IIC Gb U
Within the above ambient temperature limits, the Temperature Class of the product is T4. The sign ‘U’ at the end
of the marking indicates a that the product has a ‘component marking’ and must not be mistaken with an equipment or
protective system. ATEX products must only be used in explosive areas compatible with their marking.
ELECTRICAL LIMITS
Stator type --> CEC100X5 CEC100X5-1 CEC100Y5-3 (ATEX)
Supply voltage 12 Vdc 24 Vdc 12 Vdc
Voltage tolerance ±10% ±10% ±10%
2
3
1
1
2
Inlet
Outlet
Outlet
Inlet

Parker CEV-S Specifications

General

Brand	Parker
Model	CEV-S
Category	Control Unit
Language	English

Summary

Residual Risks and General Information

Residual Risks

Identifies potential hazards like high-pressure fluid discharge, hot/cold surfaces, and electrical risks.

Foreword

Introduces the manual's scope, covering CEV-S electric expansion valves and CEC Series motor stators.

Product Information

Refers to the product catalogue for detailed information and explains product identification marking.

Product Use and Specifications

3.1. Proper Use

Details the CEV-S valve's function in refrigeration systems as an expansion element.

Operative Limits

Specifies maximum pressure, fluid/ambient temperature, and admitted refrigerants.

Special Requirements for ATEX Products

Outlines temperature limits and marking for ATEX rated coils, including 'component marking'.

Electrical Limits

Lists supply voltage and tolerance for different CEC stator types.

3.2. Improper Use

Describes foreseeable improper uses, including incorrect installation areas or gas mixtures.

Installation and Operation Procedures

4. Installation

Instructs to follow general installation guidelines and specific ATEX product requirements.

Special Requirements for ATEX Products (Installation)

Covers compatible environments, qualified personnel, enclosure rating, and transient protection.

5. Operation

Explains achieving proper valve opening via electrical pulses to the CEC stator.

5.1. Re-initialization Routine and Overdriving

Details the process to close the valve and re-establish home position for precise operation.

5.2. Unipolar Motor Driving Sequence

Presents a sequence of pulses and wire color codes for motor driving steps.

Maintenance, Troubleshooting, and Parts

6. Maintenance

States the valve body is non-disassemblable and recommends exterior stator cleaning.

Special Requirements for ATEX Products (Maintenance)

Advises on avoiding ignition sources, checking for wear, and handling static charges.

7. Troubleshooting

Provides common issues, causes, and remedies for valve malfunction.

8. Spare Parts

Explains that valve bodies are non-replaceable, but stators are replaceable by qualified personnel.

Special Requirements for ATEX Products (Spare Parts)

Stipulates that replacement parts must be identical and replacement must be done by qualified personnel.

Materials and Disposal

9. Materials and Disposal

Requires dismantling and disposal by licensed companies according to local laws.