Panasonic OCU-CR2000VF8A Installation Manual
Panasonic OCU-CR2000VF8A Installation Manual

Panasonic OCU-CR2000VF8A Installation Manual

Outdoor type refrigeration unit with co2 refrigerant

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Outdoor Type Refrigeration Unit with CO
Installation Manual
Model No. OCU-CR2000VF8A / OCU-CR2000VF8ASL
Thank you very much for purchasing a Panasonic product.
Please read this manual and follow the instructions. In particular, "Safety Notice" from
page EN2 to EN8 must be confirmed for safe operation.
Please keep this document in a safe place so that it can be referenced where necessary.
OCU-CR2000VF8A_En.indd
OCU-CR2000VF8A_En.indd
1
1
Refrigerant
2
Safety Notice ............................................................ 2-8
Unit Overview ......................................................... 9-10
Specifications ........................................................11-12
For Safe and Efficient Use .................................... 13-14
Location Requirement .......................................... 14-16
Installation Example ................................................... 17
Pipework ............................................................... 18-20
Suction Filter Installation ............................................ 21
Refrigeration Diagram ................................................ 22
Refrigerant Charging ............................................ 23-24
Electrical Wiring .................................................... 25-27
Electrical Circuit .................................................... 28-29
Checkpoints before Operation .................................... 30
Display and Setting............................................... 31-35
Control Functions ................................................. 36-37
Operation Optimization ......................................... 38-39
Oil Management ................................................... 40-43
Errors and Alarms ................................................. 44-45
Maintenance and Inspection....................................... 46
Troubleshooting .................................................... 47-48
Failure Diagnosis .................................................. 49-56
Regulatory Information ............................................... 57
• The English text is the original instructions.
NOTICE
Panasonic Corporation
1006 Oaza Kadoma, Kadoma City, Osaka, Japan
CONTENTS
Other languages are translation from the
original doument.
2024/03/21
2024/03/21
8:01:52
8:01:52

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Summary of Contents for Panasonic OCU-CR2000VF8A

  • Page 1: Table Of Contents

    Refrigerant Installation Manual Model No. OCU-CR2000VF8A / OCU-CR2000VF8ASL Thank you very much for purchasing a Panasonic product. Please read this manual and follow the instructions. In particular, “Safety Notice” from page EN2 to EN8 must be confirmed for safe operation.
  • Page 2: Safety Notice

    Safety Notice For the purpose of avoiding harm to people and damage to properties, items to be complied with are explained here.  Explanations are classified by degree of harm or damage caused by incorrect use. WARNING Indicates possibility of death or serious injury. CAUTION Indicates possibility of minor injury or damage to properties.
  • Page 3 Safety Notice Installation Work Installation should be made securely on Perform airtight test before charging a place that can fully support the mass of refrigerant. the refrigeration unit. Insufficient foundation may cause Refrigerant gas leak may cause falling or dropping, and lead insufficient oxygen and lead to a to refrigerant gas leak, injury, death accident.
  • Page 4 Safety Notice Cautions for Use Do not change the set values of the Do not insert a finger, stick or foreign safety device. object into the ventilation opening and fan guard of the enclosure panel. Using the refrigeration unit with changed values may cause failure Such object may hit the fast of the safety stop function and...
  • Page 5 Safety Notice Cautions for Use Restriction on use of equipment This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
  • Page 6 Safety Notice CAUTION Installation Work Do not install in a place with possible Produce a refrigeration cycle within the leak of flammable gas. limits of an operation standard (Scope of Application). Leaked flammable gas around the Non-standard refrigeration cycle refrigeration unit may catch fire may generate abnormal high from a spark of a switch and lead pressure and abnormal heat...
  • Page 7 Safety Notice This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to 2339kVA at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to 2339kVA.
  • Page 8 Safety Notice Disposal Request a specialty operator for Before disposal disposing the refrigeration unit. The refrigeration system is under The refrigeration system is under high pressure. Disposal with high pressure. Do not tamper the refrigerant and oil inside the with it. Contact qualified service refrigeration unit may cause fire or personal before disposal.
  • Page 9: Unit Overview

    Unit Overview Front of refrigeration unit Back of refrigeration unit Intermediate Split heat pressure exchanger sensor 1st-stage Oil separator 2nd-stage discharge valve discharge valve 2nd-stage 1st-stage discharge valve Intermediate discharge valve cooler Balance pressure Compressor solenoid valve (EV2) Electronic No.2 Compressor No.1 expansion valve for pressure...
  • Page 10 Unit Overview Accessories Name Model No. Remarks Suction filter 8020-3514-139-000 ID19.05 (Type: S-008T1) (Outer diameter welding) Filter Dryer 8020-3513-188-000 ID19.05 (Type: DCY-P8 306 S) (Outer diameter welding) Service piping SPK-TU125 Option SPK-TU126 Note: Service piping are not included the unit. The filter dryer and suction filter (shipped with each refrigeration unit) are standard components.
  • Page 11: Specifications

    Maximum refrigerant charge Adequate charge amount should for the entire refrigeration 32 kg be calculated by tool provided by system Panasonic Sound pressure level 10 m distance (calculated value from a 38.9 dB(A) (A-weight) measured value at a distance of 1 m) * Operation may not be possible depending on the installed condition.
  • Page 12: Rated Specifications

    1. Evaporating temperature: -10 °C 2. Ambient temperature: 32 °C 3. Compressor rotational speed: 60 s 4. Suction superheat: 10 K Performances (400 V) Evaporating temperature Ambient Item Symbol OCU-CR2000VF8A Unit temperature ET-10 ºC ET-35 ºC Annual electricity consumption 56306 66660 kWh/a...
  • Page 13: For Safe And Efficient Use

    For Safe and Efficient Use Cautions for Installation Work This refrigeration unit has been designed exclusively for R744 (CO refrigerant). Refrigeration oil and each component including the compressor have been exclusively designed for the refrigeration unit. Please use sufficient caution for maintaining the reliability of the product. (1) Since CO refrigeration cycle becomes high pressure during operation, use the piping material and other components particularly designed for CO...
  • Page 14: Location Requirement

    Initial Oil Quantity Model No. Compressor Oil separator OCU-CR2000VF8A(SL) 1,800 mL × 2 pcs 5,000 mL Oil type PZ-68S When adding oil or changing oil, be sure to use our specified oil.
  • Page 15 Location Requirement  Location not affected by a wet floor  Direction for avoiding strong wind Refrigeration unit is often affected by rainwater and Install the refrigeration unit with its blow-out side facing drain water from defrosting. Apply drain water work as perpendicular to the wind direction.
  • Page 16: External Dimensions

    Location Requirement External Dimensions (Units: mm) Liquid Suction Details of piping hole on the bottom of the refrigeration unit 1190 Suction Power supply hole Liquid Piping hole 4-φ20hole Refrigeration fixing 1000 (installation pitch) (91) 851 (installation pitch) 1182 Left side of refrigeration unit Front of refrigeration unit Right side of refrigeration unit Optional Accessories...
  • Page 17: Installation Example

    Installation Example Standard installation When there’s an obstacle in the upward direction The gas cooler is designed to take air from 3 directions, including the front, left and right side, and blow out from When there’s an obstacle in the the top.
  • Page 18: Pipework

    During bending, pay attention to deformation and scars. ● Use a selection tool provided by Panasonic to choose pipe size of each part. Referring to other tools might result in insufficient oil return or excessive pressure loss.
  • Page 19 Pipework Cautions for Heat Insulation Work ● Apply heat insulation on the suction line and liquid line for avoiding thermal effect from outside. Liquid line ● Do not wrap together the suction line and liquid line with heat insulation material. (Refer to the right illustration) ●...
  • Page 20 Refer to a Liquid trap Oil trap Panasonic tool for right selection. Oil traps should be installed every 6 meters. ● The Back-Up Solenoid Valve described is to prevent liquid refrigerant return in case the expansion valve stays open due to power outage.
  • Page 21: Suction Filter Installation

    Suction Filter Installation Suction filter attachment (1) Do not remove the Suction Filter cap right before use. (2) Install the Suction Filter horizontally within 1 m from the unit where available to absorb pulsation. (3) The both sides of the Suction Filter shall be fixed firmly to the platform where the Condensing Unit is located. Clamps shall be applied directly to the inlet/outlet pipes, not over an insulation layer.
  • Page 22: Refrigeration Diagram

    Refrigeration Diagram Split cycle heat Unit outlet temperature Filter Dryer Split cycle outlet exchanger sensor temperature sensor Pressure Liquid line Pressure reduction electronic relief valve (PRV) (Unit outlet) Service expansion valve Liquid return port electronic MOV5 Unit outlet expansion valve pressure sensor MOV7 Gas return electronic...
  • Page 23: Refrigerant Charging

    Refrigerant Charging Vacuum (Perform after completing electrical wiring.) To avoid inclusion of air or moisture in the refrigerant circuit, be sure to execute vacuum drying of the entire circuit by using a vacuum pump, before charging refrigerant. By following procedure, execute vacuum after securely carrying out airtight test.
  • Page 24: Method Of Charging

    - Close the low pressure service port to complete the charge. (4) Charge amount - Adequate charge amount can be calculated by the tool provided by Panasonic. The below can be referenced in addition to above. In the case of a refrigeration showcase = 825 (g / m) x showcase length (m) + 90 (g / m) x piping length (one- way: m) Note: 1.
  • Page 25: Electrical Wiring

    10 m 20 m 30 m 50 m area (mm area (mm current current OCU-CR2000VF8A(SL) 75 A 30 mA Notes: 1. Wiring and cabling quality need to follow local standards, regulations and laws. EC: 60245 IEC57 CENELEC: H05RN-F AS/NZS : 3000 2.
  • Page 26 Electrical Wiring Wiring Block Diagram Example CR2-EN-PCB ~50 Hz 380/400/415 V Ground fault protector Cabtyre cable (*1) SW1 (*4) Power source L1 L2 L3 N External terminal base 9 10 11 12 Grounding screw Grounding screw Grounding screw Grounding screw Shielded Shielded Shielded...
  • Page 27 Electrical Wiring Wiring Guide Opening Wiring guide opening is located on the left side of the refrigeration unit. (A square hole is provided in the unit base for electrical wiring.) By using a cable bundling tie attached to the bottom section of the electrical box, bundle the power cable, grounding wire, communication wires, etc.
  • Page 28: Electrical Circuit

    Electrical Circuit Electrical circuit diagram (Standard electrical wiring diagram) Power source 380V/400V/415V Power source Grounding terminal block screw Blue White Black Blue White Black Blue FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE CR2-EN-PCB Line Line filter filter AC_R OUT AC_R OUT Line filter Line filter...
  • Page 29 Electrical Circuit External terminal base CR2-EN-PCB Showcase operation signal input 2P24 CR2-EN-PCB Grounding screw 4P12 Digital input 1 2P23 non-voltage contact Grounding screw 4P12 4P12 Digital input 2 2P25 non-voltage contact Glay 2P14 CR2-EN-PCB Digital output 1 Black 2P41 external power souse 2P12 Maximum AC 250V 3A (Resistive/Inductive load)
  • Page 30: Checkpoints Before Operation

    Checkpoints before Operation Confirmation before Operation (1) Please recheck if any incorrect wiring or loose wiring exists. (2) Check that the power supply voltage is within ± 10 % of the rated voltage. (3) Check that insulation resistance is 1 MΩ or greater. Power Supply to the Crankcase Heater When restarting after power shutoff of the ground fault protector, crankcase heater must be turned ON for 6 hours or longer before operating the compressor for avoiding oil-forming at starting.
  • Page 31: Display And Setting

    Display and Setting This refrigeration unit is equipped with the function of setting a variety of compressor operation modes by the switch on the CRD2-EN-PCB. Operating condition of the compressor can be checked by the 7-segment LED. In particular, when any abnormality occurs in the refrigeration unit, an alarm LED (Red) lights up or blinks, and the cause of abnormality is displayed digitally by an error code.
  • Page 32 Display and Setting Switch Setting (1) AUTO/FORCED switch (Slide switch, SW14) SW14 Function Remarks AUTO Auto AUTO FORCED Forced Not applicable FORCED (2) CONTROL/CHECK switch (Slide switch, SW15) SW15 Function Remarks CONTROL Normal mode CONTROL Vacuum mode CHECK Vaccum mode (DIP switch SW13 setting is CHECK also required)
  • Page 33: Low Pressure Setting

    Display and Setting Low Pressure Setting (1) Turn OFF the operation switch S1. (2) Power ON (3) Low Pressure Setting (ON value, OFF value, Diff. value) The Low pressure setting at the shipment is as shown in No.3 of the “Standard Pressure Setup Table” below. Since the Target Low Pressure Setting can be changed, use the following procedure as required.
  • Page 34 Display and Setting Indication (1) Individual LED of CRD2-EN-PCB Name Color Condition when the LED lights up Yellow The low pressure is equal to the Control “ON value” or higher. Yellow The low pressure is equal to the Control “OFF value” or lower. Lights up/blinks in the event of an anomaly or when an alarm condition is generated.
  • Page 35 Display and Setting Setting/Display Listing Digital display and operation list Rotary switch Mode switch switch switch (Knob) Display/Setup OCU-CR2000VF8A Remarks SW13-3 SW13-7 SW13-8 position ▲ pressing: Red LED blinking cancelled Low pressure: ▼ During pressing: evaporating Low pressure and high pressure Lo.0.00 to 9.98 (MPa)
  • Page 36: Control Functions

    Control Functions Low Pressure Control Method Compressor capacity is controlled by changing the inverter frequency based on the difference between the low pressure and set value by adjusting the low pressure to the set value (ON value to OFF value). However, compressor operation continues even if the low pressure becomes below “OFF value”...
  • Page 37: Protective Functions

    Control Functions Protective Functions (1) Power reverse/missing phase, high pressure abnormality, intermediate pressure abnormality, unit outlet pressure abnormality Stops the compressor. (2) Discharge gas temperature abnormality 1. Normal operation Compressor operation stops when the discharge gas temperature exceeds 118 °C, and resumes when the discharge gas temperature becomes 75 °C.
  • Page 38: Operation Optimization

    Operation Optimization Avoiding Short Cycle Operations Short cycle operation (frequent start/stop operation) causes excessive oil carry-over during starting and causes insufficient lubrication. Adjust operation cycle to avoid short cycle operation. (Adjust ON-OFF cycle to be 10 minutes or longer.) The main cause of short cycle operation is inappropriate pressure setting on CRD2-EN-PCB, suction filter clogging, and unbalance of cooling capacity and load.
  • Page 39 Operation Optimization Adjusting Refrigerant Quantity of the Refrigeration Unit During determination of refrigerant quantity, temperature setting of all Unit coolers/Display cases needs to be set to the lowest temperature without activation of the thermostat for making the refrigeration unit operating continuously. (1) Method of determining refrigerant quantity Check the operation condition of the refrigeration unit by the following method, and adjust the refrigerant quantity to the appropriate value according to Table 3 (Determination criteria of refrigerant quantity).
  • Page 40: Oil Management

    When the connection piping is long, oil in the refrigeration unit tends to attach to the in inner surface of the piping, resulting in insufficient oil in the compressor. When the total piping length (one way) exceeds 50 m, add oil as instructed by a Panasonic tool. After adding the oil, check the oil level and adjust oil addition.
  • Page 41 Oil Management Oil Level Control and Oil Addition Assessment Criteria [Checking method] During continuous operation of the refrigeration unit, check for any variations of the oil control electronic expansion valve opening by using the digital display. ● Correct operation The electronic expansion valve opening generally stays between “small opening” and “medium opening” without occurring “Oil level anomaly (E39X, E09X)”.
  • Page 42 Oil Management Oil Replenishing Method For the detailed method of adding oil, refer to the Engineering Service Manual “Compressor Oil Adding Procedure”. (1) Turn the operation switch of the compressor that requires oil addition to “OFF” and stop the operation of the relevant compressor.
  • Page 43 Oil Management Oil Replenishing Method (9) After applying vacuum, return the oil control electronic expansion valve (MOV1 or MOV2) of the relevant compressor to automatic control. For compressor No.1: Set the rotary switch (knob) on the control PCB to [ON], turn OFF the DIP switch SW13-No.7, and turn ON the DIP switch SW13-No.5.
  • Page 44: Errors And Alarms

    Errors and Alarms Description of Abnormality Alarm When the ground fault protector is activated, check insulation of the equipment and circuit, eliminate the cause, and then supply power again. Anomaly item When restarting When stopped Number Alarm Alarm of times to indication indication External...
  • Page 45 Errors and Alarms Inverter anomaly item When 1st – 5th incident are automatically restore When 6th incident is stop Inverter Error ALARM External Communica- Error ALARM External Communica- code (Red) LED alarm signal tion signal code (Red) LED alarm signal tion signal E671 E771...
  • Page 46: Maintenance And Inspection

    Maintenance and Inspection Maintenance and inspection should be contacted with a specialty company. All work must be conducted by authorized and licensed technicians. Request for Maintenance and Inspection (To a specialty company for installation work) The structural components of refrigeration unit do not last permanently but include those wearing out in a certain period of time.
  • Page 47: Troubleshooting

    Troubleshooting When a component failure or malfunction is found, request the specialty company to repair. Actions at the time of Failure When the refrigeration unit or any refrigerant circuit component fails to operate by some reason, turn off the power for a repair.
  • Page 48: Replacing The Compressor

    Troubleshooting Replacing the Compressor Before replacing the compressor, refer to the Engineering Service Manual “Compressor Replacement Procedure”. Caution (1) Be sure to shut off the ground fault protector. (Operation switch OFF does not shut off the crankcase heater.) (2) Connect compressor terminals U, V, and W with each lead wire as connected before. (For avoiding phase inversion) U ―Red, V ―White, W ―Black (3) Install the crankcase heater at the specified position tightly contacting the compressor.
  • Page 49: Failure Diagnosis

    Failure Diagnosis Error Code (1) When the rotary switch (knob) is at [OPERATION] position, the digital display on the control PCB alternately displays low pressure, high pressure and error code (E ***). < Error Code Table > Error Meaning Cause Correction method code (1)Investigate the cause of high pressure anomaly.
  • Page 50 Failure Diagnosis Error Code Error Meaning Cause Correction method code (1) Check the connection of control PCB “2P8 ambient air Ambient temperature Ambient temperature sensor became connector”. sensor anomaly abnormal (open circuit condition). (2) Check the resistance value of the ambient temperature sensor (Refer to “Method of Checking Sensor Characteristics”).
  • Page 51 Failure Diagnosis Error Code Error Meaning Cause Correction method code (1) Check the connection of control PCB “2P7 S outlet Split cycle outlet Split cycle outlet temperature sensor connector”. temperature sensor became abnormal (open circuit (2) Check the resistance value of the split cycle outlet anomaly condition).
  • Page 52 Failure Diagnosis Failure Diagnosis at the time of Abnormal Discharge Gas Temperature When the discharge gas temperature goes up abnormally, compressor is stopped for protecting the compression components of the compressor and discharge gas temperature abnormality alarm is generated at the same time. In such a case, check the problem position and apply appropriate actions in the sequence shown below.
  • Page 53 Failure Diagnosis Method of Checking Sensor Characteristics (1) Pressure (Low, Intermediate, Unit outlet, High pressure) sensor While the connector is inserted to the control PCB, measure the voltage and check if the pressure is normal by using the table below. <...
  • Page 54 Failure Diagnosis Method of Checking the Resistance of Electronic Expansion Valve Coil and Oil Level Switch (1) Electronic expansion valve coil: Used in Oil control electronic expansion valve (MOV1, MOV2), Electronic expansion valve for pressure reduction (MOV5), Electronic expansion valve for gas return (MOV6) and Electronic expansion valve for liquid return (MOV7) Measure the resistance with the connector disconnected from the control PCB, and check if the resistance value is normal level by using the table below.
  • Page 55 Failure Diagnosis Failure Diagnosis of Inverter Unit Caution When performing an inspection or replacement, make sure to start working after the high voltage danger indication red light on the inverter GA500 and inverter GA700 has been turned off. (Approx. 5 minutes are required for the capacitor to discharge) Electrical box internal layout Left side of refrigeration unit Front of refrigeration unit...
  • Page 56 Failure Diagnosis Failure Diagnosis of Inverter Unit (2) When inverter abnormality (E6XX to E7XX) is generated, possible cause is as follows. Check all of the following causes. Cause Method of Checking Method of Action (1) Check if the compressor motor current or fan motor, or both are high.
  • Page 57: Regulatory Information

    McAlpine Hussmann Limited Winsbergring 15,22525 Hamburg,Germany Made in Japan Injury Hazard Impoter in the UK Panasonic UK,a branch of Panasonic Marketing Europe GmbH Κατασκευή Ιαπωνία Do not climb on the unit Maxis 2,Western Road,Bracknell,Berkshire,RG12 1RT Fabricado no Japão Fabricado en Japón...
  • Page 58 (English) (French / français) Importer: Importateur: Panasonic Marketing Europe GmbH Panasonic Marketing Europe GmbH Hagenauer Strasse 43, 65203 Wiesbaden, Germany Hagenauer Strasse 43, 65203 Wiesbaden, Allemagne Authorized Representative in EU: Représentant autorisé dans l’UE: Panasonic Marketing Europe GmbH Panasonic Marketing Europe GmbH...
  • Page 59 (Finnish / suomi) (Hungarian / magyar) Maahantuoja: Importőr: Panasonic Marketing Europe GmbH Panasonic Marketing Europe GmbH Hagenauer Strasse 43, 65203 Wiesbaden, Saksa Hagenauer Strasse 43, 65203 Wiesbaden, Németország Valtuutettu edustaja EU:ssa: Hivatalos képviselő az EU-ban: Panasonic Marketing Europe GmbH Panasonic Marketing Europe GmbH...
  • Page 60 If a product failure occurs by incorrect installation, the product becomes out of warranty. Documentation in local language can be downloaded from Internet Panasonic pro club «In the European Market». Download site: www.panasonicproclub.com Panasonic Heating & Ventilation Air-conditioning Europe...

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