Table of Contents
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Outdoor Type Refrigeration Unit
(Non-fluorocarbon Refrigeration Unit with CO
Operating Instructions and Installation Instructions
Model No.
OCU-CR400VF8 /OCU-CR400VF8SL
Thank you very much for purchasing Panasonic products this time.
Please read this instruction booklet and correctly comply with the explanations.
In particular, please read "Cautions for Safety" (Pages EN2 to EN8) for ensuring safe
operations.
Please retain this instruction booklet in a safe place.
Caution labels are attached to the product.
This illustration represents
Cautions for Safety....................................................... 2-8
Name of Each Part .......................................................... 9
Scope of Application, Specifications......................... 10-11
For Effectively Using the Refrigeration Unit.............. 12-13
Selection of Installation Location.............................. 13-14
Carry-in/Installation....................................................14-15
Installation Example ......................................................16
Refrigerant Piping Work ...........................................17-18
Piping Example..............................................................19
Refrigerant Circuit Diagram........................................... 20
Refrigerant Charging................................................ 21-22
Cautions for Electrical Wiring Work............................... 23
Electrical Wiring Work ..............................................24-25
Electrical Circuit Diagram ......................................... 26-27
What Needs to be Checked before Operation............... 28
Setting and Indication............................................... 29-33
Control Functions ..................................................... 34-36
Adjustment during Operation....................................36-37
About Alarms ............................................................38-40
Maintenance and Inspection.......................................... 41
Actions at the time of Failure .................................... 42-43
Failure Diagnosis......................................................44-50
Makings for Directive 2014/68/EU (PED) ...................... 51
OCU-CR400VF8
NOTICE
Panasonic Corporation
1006 Kadoma, Kadoma City, Osaka, Japan
Refrigerant)
2
CONTENTS
• The English text is the original instructions.
Other languages are translation of the original
instructions.
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Summary of Contents for Panasonic OCU-CR400VF8
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Page 1: Table Of Contents
Operating Instructions and Installation Instructions Model No. OCU-CR400VF8 /OCU-CR400VF8SL Thank you very much for purchasing Panasonic products this time. Please read this instruction booklet and correctly comply with the explanations. In particular, please read "Cautions for Safety" (Pages EN2 to EN8) for ensuring safe operations. -
Page 2: Cautions For Safety
Cautions for Safety (Be sure to comply with the following) 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. - Page 3 Cautions for Safety (Be sure to comply with the following) Installation Work Installation should be made securely on a Perform airtight test before charging place that can fully support the mass of the refrigerant. refrigeration unit. Refrigerant gas leak may cause Insufficient foundation may cause insufficient oxygen and lead to a falling or dropping, and lead...
- Page 4 Cautions for Safety (Be sure to comply with the following) Cautions for Use Do not change the set values of the safety Do not insert a finger, stick or foreign device. object into the ventilation opening and fan guard of the enclosure panel. Using the refrigeration unit with changed values may cause Such object may hit the fast...
- Page 5 Cautions for Safety (Be sure to comply with the following) 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 Cautions for Safety (Be sure to comply with the following) CAUTION Installation Work Do not install in a place with possible leak of Produce a refrigeration cycle within the flammable gas. limits of an operation standard (Scope of Application). Leaked flammable gas around the refrigeration unit may catch fire Non-standard refrigeration cycle from a spark of a switch and lead...
- Page 7 Cautions for Safety (Be sure to comply with the following) This product is intended for professional use. Permission from the power supplier is required when you connect this unit to a 16A distribution network. Cautions for Use When the refrigerant bursts out, shut off the Do not use flammable spray near the power and fully close the service valve.
- Page 8 Cautions for Safety (Be sure to comply with the following) Disposal Request a specialty operator for disposing Before disposal the refrigeration unit. The refrigeration system is The refrigeration system is under under high pressure. Do not high pressure. Disposal with tamper with it.
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Page 9: Name Of Each Part
Name Model No. Applicable refrigeration unit Remarks Suction filter S-008T Prevention of dust penetration D-152T φ 6.35 OCU-CR400VF8 Filter Dryer (Type: CO-082-S) OCU-CR400VF8SL (Outer diameter welding) Service piping SPK-TU125 Option Note: Service piping are not included the unit. The filter dryer and suction filter (shipped with each refrigeration unit) are standard components. When replacing the filter dryer and suction filter, use the same ones shown above as the Accessories. -
Page 10: Scope Of Application,Specifications
Scope of Application,Specifications This refrigeration unit operates with a rotary compressor. Use the refrigeration unit within the range shown below. Item Standard Value Remarks Refrigerant R744 The charge supply amount shall be adequate Evaporating temperature -20 °C to -5 °C Temperature conversion of inlet pressure Suction pressure... - Page 11 Scope of Application,Specifications Rated Specifications Item Rating Unit Power source 50 Hz 380 V / 400 V / 415 V 3N ~ Power input 4.00/4.00/4.00 Current 6.48/6.14/5.93 Conditions 1. Evaporating temperature: -10 °C 2. Ambient temperature: 32 °C 3. Compressor rotational speed : 80 s 4.
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Page 12: For Effectively Using The Refrigeration Unit
For Effectively Using the Refrigeration Unit 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 refrigerant becomes high pressure during the operation, use the piping material and other components particularly designed for CO... -
Page 13: Selection Of Installation Location
(5) Rotary compressor consists of high precision components. Use caution during piping work to avoid contamination of dust, metal powder, or oxide scale, etc. Initial Oil Quantity Model No. Compressor Oil separator OCU-CR400VF8(SL) 600 mL 550 mL Oil type PZ-68S Caution When adding or changing oil, be sure to use our specified oil. -
Page 14: Carry-In/Installation
Selection of Installation Location Location not disturbing neighbors Avoid air-blow from the gas cooler to the neighbor’s window or noise to disturb other people. Location with a sturdy and level surface Install the refrigeration unit on a firm foundation to avoid an increase of noise and vibration. Particularly at the boundary from the neighbor’s lot, comply with the regional laws and regulations. - Page 15 Carry-in/Installation Foundation/Platform Work ● As a reference, the foundation should be made from concrete having a mass about 3 times that of the refrigeration unit. (Absorbing vibration by mass) ● Vibration should be reduced by a platform or anti-vibration pad for avoiding transmission of vibration to the floor and wall. ●...
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Page 16: Installation Example
Installation Example EN - 16... -
Page 17: Refrigerant Piping Work
HFC refrigerant, it is necessary to choose adequate materials. Model No. Suction line (Unit inlet) Liquid line (Unit outlet) OCU-CR400VF8(SL) Ø12.7 mm, 1/2” Ø9.52 mm, 3/8” Note: Welding is outer diameter welding. ● Piping material should be seamless phosphorous-deoxidized copper pipes (refrigeration grade), K65. - Page 18 Refrigerant Piping Work Cautions for Heat Insulation Work ● Apply heat insulation on the suction line and liquid line for avoiding thermal effect from outside. ● Do not wrap together the suction line and liquid line with heat insulation material. Liquid line (Refer to the right illustration) ●...
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Page 19: Piping Example
Piping Example Total piping length should be limited to 50 m one way. When the evaporator is located higher ■Height difference 5 m or below ● The suction line should ideally slope gently towards the unit. Recommendation slope is 1/200~1/250. ●... -
Page 20: Refrigerant Circuit Diagram
Refrigerant Circuit Diagram Solid line : Refrigerant Dotted line : Oil EN - 20... -
Page 21: Refrigerant Charging
Refrigerant Charging Evacuation (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 evacuation after securely carrying out airtight test. - Page 22 - 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.
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Page 23: Cautions For Electrical Wiring Work
10 m 20 m 30 m 50 m current current OCU-CR400VF8(SL) 30 A 30 mA Notes: 1. Wiring and cabling quality need to follow local standards, regulations and laws. IEC: 60245 IEC57 CENELEC: H05RN-F 2. Use shielded cable for communication line, liquid tube electromagnetic valve line, external alarm line and showcase operation signal line. -
Page 24: Electrical Wiring Work
Electrical Wiring Work Wiring Block Diagram Example CR2-EN PCB 50 Hz 380/400/415V 3N~ Ground fault protector Cabtyre cable (*1) L1 L2 L3 N Power source terminal base External Alarm Liquid tube electromagnetic Communication Line Showcase operation terminal base Terminal base valve terminal base(*3) signal terminal base Back-up... - Page 25 Electrical Wiring Work Wiring Guide Opening Wiring guide opening is located on the left side of the refrigeration unit. Connect the Power cable and Grounding cable through the eyelet rubber on the back side. Connect the communication cable through the eyelet rubber on the front. By using the clamp on the bottom of the electrical box to bundle the above cables together so that they will not bend.
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Page 26: Electrical Circuit Diagram
Electrical Circuit Diagram Electrical circuit diagram (Standard electrical wiring diagram) EN - 26... - Page 27 Electrical box internal layout Symbol Name Left side of refrigeration unit Left side of refrigeration unit Operation switch without MTG for CRD2-EN PCB 1X1,1X2,1X3 Auxiliary relay Compressor motor Reactor Crankcase heater INV4-H-EN PCB Gas cooler fan motor MOV5 Pressure reduction electric expansion valve MOV6 Gas return electronic expansion valve MOV7...
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Page 28: What Needs To Be Checked Before Operation
What Needs to be Checked before Operation Confirmation before Operation (1) Please recheck if any incorrect wiring or loose wiring exists. (2) Fully open all service valves. (3) Check that the power supply voltage is within ± 10 % of the rated voltage. (4) Check that insulation resistance is 1 MΩ... -
Page 29: Setting And Indication
Setting and Indication 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 30 Setting and Indication Switch Setting (1) AUTO/FORCED switch (Slide switch, SW14) SW14 Function Remarks AUTO Auto FORCED Forced Not yet used (2) CONTROL/CHECK switch (Slide switch, SW15) SW15 Function Remarks CONTROL Normal Mode CONTROL Evacuation Mode CHECK CHECK Special Mode (DIP switch SW13 setting is also required) (3) 8P DIP switch (SW13)
- Page 31 Setting and Indication 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 32 Setting and Indication 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 33 Setting and Indication Setting/Display Listing Digital display and operation list DIPSW Rotary switch Mode Display/Setup Remarks (Knob) position 13-8 13-7 ▲ pressing: Red LED blinking cancelled Low pressure: During pressing ▼: evaporating Low pressure and high pressure is Lo.0.00 to 9.98 (MPa) temperature OPERATION displayed alternately.
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Page 34: 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 35 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.
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Page 36: Adjustment During Operation
Control Functions (6) Inverter abnormality Compressor is stopped when abnormal operations which are indicated as section “About alarms” occurred. Refer to Inverter anomaly of section “About alarm” for detail. (7) Inverter communication abnormality When the INV4-MF-EN PCB cannot receive data from the CR2-EN PCB, compressor operation stops with error display. - Page 37 Adjustment during Operation 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).
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Page 38: About Alarms
About Alarms Installation of an Alarm System This refrigeration unit has a variety of protection devices for securing safety. When the ground fault protector or other protection device is activated, and the alarm system or temperature control system is insufficient, cooling operation is stopped for many hours thereby damaging the food items. - Page 39 About Alarms Description of AbnormalityAlarm 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 indication Alarm indication of times External External Note...
- Page 40 About Alarms Inverter anomaly item When 1st and 2nd incident are When 3rd incident is stop automatically restore ALARM External Commu- ALARM External Commu- Error Error (Red) alarm nication (Red) alarm nication code code signal signal signal signal E601 blinking none none E701...
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Page 41: 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 42: Actions At The Time Of Failure
Actions at the time of Failure 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 reasons, turn off the power for a repair. - Page 43 Actions at the time of Failure 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.
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Page 44: Failure Diagnosis
Failure Diagnosis Error Code (1) When the rotary switch (knob) is at [OPERATION] position, the digital display on the CRD2-EN PCB alternately displays low pressure, high pressure and error code (E ***). < Error Code Table > Error Meaning Cause Correction method code (1) Check if the power supply is normal. - Page 45 Failure Diagnosis Error Code Error Meaning Cause Correction method code (1) Investigate the cause of unit outlet pressure anomaly. Unit outlet pressure Increased unit outlet pressure caused a anomaly (1st to 6th (2) Check for the presence of any anomalies of the unit outlet pressure unit outlet pressure anomaly.
- Page 46 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 47 Failure Diagnosis Method of Checking Sensor Characteristics (1) Pressure (Low, Intermediate, Unit outlet, High pressure) sensor While the connector is inserted to the CR2-EN PCB, measure the voltage and check if the pressure is normal by using the table below. <...
- Page 48 Failure Diagnosis Method of Checking the Resistance of Electronic Expansion Valve Coil Electronic expansion valve coil: Used in 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 CR2-EN PCB, and check if the resistance value is normal level by using the table below.
- Page 49 Failure Diagnosis Failure Diagnosis of Inverter Circuit Caution When performing an inspection or replacement, make sure to start working after the high voltage danger indication red light on the INV4- H-EN PCB has been turned off. (Approx. 5 minutes are required for the capacitor to discharge) Electrical box internal layout Left side of refrigeration unit Left side of refrigeration unit...
- Page 50 Failure Diagnosis Failure Diagnosis of Inverter Circuit (INV4-MF-EN PCB, INV4-H-EN PCB) (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 Overload condition (1) Check if the compressor motor current or fan motor, or Eliminate the cause of overload.
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Page 51: Makings For Directive 2014/68/Eu (Ped)
Makings for Directive 2014/68/EU (PED) Rating nameplate figure A: Model Name OCU-CR400VF8 OCU-CR400VF8SL... - Page 52 NOTE – – EN - 52...
- Page 53 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 Corporation...