Panasonic OCU-CR400VF8 Operating instructions

ENGLISH

Outdoor Type Refrigeration Unit

(Non-fluorocarbon Refrigeration Unit with CO2Refrigerant)

Operating Instructions and Installation Instructions

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

CONTENTS

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

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 OCU-CR400VF8 •The English text is the original instructions.

Other languages are translation of the original

instructions.

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.

■Items to be observed are explained by the following pictograms.

Indicates what you should not do.

Indicates what you must do.

WARNING

Installation Work

Installation to be made by manufacturer’s

service personnel or similarly skilled person.

Incorrect installation work may

lead to malfunction such as

abnormal vibration,

and generates

refrigerant gas leak, electrical

shock, or fire.

Do not use other than the designated

refrigerant (for charging, adding or

recharging)

Non-designated refrigerant may

cause equipment failure or burst,

or injury.

Appliances employing R744 refrigeration

system.

System contains refrigerant under

high pressure. Do not tamper with

the system. It must be serviced by

qualified persons only.

Securely complete refrigerant piping before

carrying out airtight testing.

Refrigerant gas leak may cause

suffocation.

Cautions for Safety (Be sure to comply with the following)

EN - 2

ENGLISH

Installation Work

Installation should be made securely on a

place that can fully support the mass of the

refrigeration unit.

Insufficient foundation may

cause

falling or dropping, and lead

to refrigerant gas leak, injury,

electrical shock, or fire,

●Refrigeration unit should be

secured on a concrete base

with a mass approximately

3 times that of the unit and

fastened with anchor bolts.

Perform airtight test before charging

refrigerant.

Refrigerant gas leak may cause

insufficient oxygen and lead to a

death accident.

●Carry out airtight test and

confirm no leak of refrigerant.

Install the safety cover.

Touching the refrigeration unit

by hand of the people other than

the designated operators may

cause injury.

●Install a safety cover or

protective fence.

Piping, equipment components and tools

should be exclusively for R744 (CO2

refrigerant).

Use of components for HFC

refrigerant may cause serious

accidents such as equipment

failure and rupture of the

refrigerant cycle.

Electrical Work

Always use a dedicated circuit and install a

ground fault protector.

Incorrect electrical work may

lead to current leak and fire or

electrical shock.

●Wiring work should conform to

the installation instructions.

Grounding Work

Lack of grounding work may

lead to electrical shock caused

by current leak.

●Securely carry out grounding

work by qualified technicians.

Electrical wiring should use the specified

cable and to be properly secured.

When the specified cable is

not used, or connection or

securing is incomplete, electrical

resistance becomes larger and

may cause abnormal heating or

fire.

●Use the specified cable and

properly secure it on an

appropriate location.

Securely place the cover on the electrical

box and enclosure panel.

Incomplete attachment may

lead to penetration of water and

living creatures, thereby causing

current leak and fire/electrical

shock.

●Confirm that covers are

securely installed.

EN - 3

Cautions for Safety (Be sure to comply with the following)

Cautions for Use

Do not change the set values of the safety

device.

Using the refrigeration unit with

changed values may cause

failure of the safety stop function

and lead to a burst or fire.

●Do not change the set values

of the safety device. If they

are changed unintentionally,

shut off the power switch and

ground fault protector and

consult with the distributor.

Do not insert a finger, stick or foreign

object into the ventilation opening and fan

guard of the enclosure panel.

Such object may hit the fast

rotating fan and result in injury.

When water or other material gets into the

electrical box, turn off the power switch

and shut off the ground fault protector.

Continued use may cause

short-circuit, leading to fire or

electrical shock.

●Do not splash water on

electrical components or wash

them with water.

When the ground fault protector activates,

report to the specialty company.

Forced recovery of power may

cause current leak, leading to

fire or electrical shock.

For the purpose of controlling

concentration of refrigerant gas, install a

leak detector and mechanical ventilation

equipment in the refrigerant-handling

facility (inside the room).

Refrigerant gas leak may cause

suffocation.

Restriction on use of equipment

The appliance is not to be used

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.

Consideration for children

Children shall not play with the

appliance.

«In the European Market»

Children should be supervised

to ensure that they do not play

with the appliance.

«In the Australian and New

Zealand market»

Restriction on use of equipment

This appliance can be used by

children aged from 8 years and

above and persons with reduced

physical, sensory or mental

capabilities or lack of experience

and knowledge if they have

been given supervision or

instruction concerning use of

the appliance in a safe way

and understand the hazards

involved.

«In the European Market»

Cleaning and maintenance by trained person.

Cleaning and user maintenance

shall not be made by children

without supervision.

«In the European Market»

EN - 4

ENGLISH

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.

«In the Australian and New Zealand market»

Repairs

Disassembly or repairs should be

performed by a specialty operator.

Incorrect disassembly or repair

may lead to abnormal operation

and causes injury, fire or

electrical shock.

●Request a specialty operator

to perform disassembly or

repair work.

Do not absolutely perform

modification.

When abnormal operation was detected,

or before starting disassembly or repair,

turn off the power switch and shut off the

ground fault protector.

Continued operation with

abnormal condition, or

disassembly/repair without

shutting off the power would

lead to current leak or short-

circuit and may cause fire or

electrical shock.

Specified components must be used for

repair.

Use of non-specified

components may cause failure

of the safety stop function and

lead to burst or fire.

●Consult with the distributor.

Stop the compressor before disconnecting

the refrigerant piping.

Disconnecting the piping while

the compressor is in operation

would cause abnormally high

pressure with air intake, and

may lead to a burst or injury.

Replacing the power cord.

If the supply cord is damaged,

it must be replaced by

manufacturer, its service agent

or similarly qualified persons in

order to avoid ahazard.

Contact technician.

If any leak of refrigerant is

detected, contact the authorized,

licensed and qualified technician

to repair the system.

Moving or Change of Installation Location

Request a certified installer for moving or

changing the location.

Incorrect installation or moving

work may lead to malfunction

such as abnormal vibration, and

generates refrigerant gas leak,

electrical shock, or fire.

EN - 5

Cautions for Safety (Be sure to comply with the following)

CAUTION

Installation Work

Do not install in a

place with possible leak of

flammable gas.

Leaked flammable gas around

the

refrigeration unit may catch fire

from a spark of a switch and lead

to fire.

Produce a refrigeration cycle within the

limits of an operation standard (Scope of

Application).

Non-standard refrigeration cycle

may generate abnormal high

pressure and abnormal heat

generation, thereby causing

burst,

smoke generation, fire and

current

leak.

Apply a drain work according to the need.

Without consideration of drain

water processing, moisture from

rainwater and defrosted water

generates mold and moss, and

may cause slipping on the floor.

Apply heat insulation on the suction

line and

liquid line.

Lack of heat insulation generates

water from condensation and

mold

and moss, thus causing slipping

on the floor.

Install in a place without air stagnation.

Leak of refrigerant gas may

cause

insufficient oxygen and harm

human health.

●Install in a place with good

ventilation.

Request a specialty operator for moving the

refrigeration unit.

Incorrect moving may cause

falling

or dropping of the refrigeration

unit, and cause injury.

●Refrigeration unit is a heavy

item. Always consult with a

specialty operator.

Electrical Work

Always install a ground fault protector with

the specified capacity.

Incorrect capacity does not

operate safety stop function

and may lead to fire or electrical

shock.

Ground fault protector needs

to follow IEC60364-4-44

443,overvoltage category III.

(Impulse withstand voltage value

4kV.)

Do not include electrical wiring in the heat

insulation material.

Condensation of piping may

cause current leak and fire

caused by overheating.

EN - 6

Cautions for Safety (Be sure to comply with the following)

ENGLISH

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

power and fully close the service valve.

Blowout of refrigerant from the

refrigeration cycle by opening

the service port would cause

insufficient oxygen and harm

human health.

Do not use flammable spray near the

refrigeration unit. Do not place flammable

materials nearby.

Flammable material may catch

fire from switch spark.

Do not touch electrical components by a

wet hand.

Switching operation by a wet

hand may cause electrical shock

and injury.

Before any inspection service, turn off the

power switch and shut down the ground

fault protector.

Inspection work with power

on may lead to electrical

shock, interference with the

moving mechanism, and heat

generation, thereby leading to

injury and skin burn.

Periodically check operation of the ground

fault protector.

Failed interrupter does not

operate safety stop function

and may lead to fire or electrical

shock.

Do not touch the fin of the gas cooler.

Touching the fin and sliding

along the fin may cause skin cut

by the fin edge.

Do not ride on the refrigeration unit.

Riding on the refrigeration unit

or placing an article on it may

lead to falling or dropping by

vibration and cause injury.

Emergency (Leakage, Fire or Explosion).

Do not attempt to operate

or repair the unit during

emergencies if it is not safe to

do so.

Periodically check the installed base.

Damaged base after a long-time

use may cause the refrigeration

unit to fall or drop and lead to

injury.

EN - 7

Cautions for Safety (Be sure to comply with the following)

Disposal

Request a specialty operator for disposing

the refrigeration unit.

The refrigeration system is under

high pressure. Disposal with

the refrigerant and oil inside the

refrigeration unit may cause fire

or explosion.

Before disposal

The refrigeration system is

under high pressure. Do not

tamper with it. Contact qualified

service personal before

disposal.

Disposal of Old Equipment

Only for European Union and countries with recycling systems

This symbol on the products, packaging, and/or accompanying documents

means that used electrical and electronic products must not be mixed with

general household waste.

For proper treatment, recovery and recycling of old products, please take them

to applicable collection points in accordance with your national legislation.

By disposing of them correctly, you will help to save valuable resources and

prevent any potential negative effects on human health and the environment.

For more information about collection and recycling, please contact your local

authority.

Penalties may be applicable for incorrect disposal of this waste, in accordance

with national legislation.

EN - 8

Cautions for Safety (Be sure to comply with the following)

ENGLISH

Name of Each Part

Electrical box internal layout

Accessories

Name Model No. Applicable refrigeration unit Remarks

Suction filter S-008T

OCU-CR400VF8

OCU-CR400VF8SL

Prevention of dust penetration

Filter Dryer D-152T

(Type: CO-082-S)

φ6.35

(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.

EN - 9

Liquid tube electromagnetic valve terminal base

External alarm terminal base

Communication terminal base

Power source

terminal base

Showcase operation

terminal base

Reactor

Control terminal base

Left side of refrigeration unit Left side of refrigeration unit

without MTG for CRD2-EN PCB

CR2-EN PCB CR2-EN PCB

CRD2-EN PCB

INV4-H-EN PCB

INV4-MF-EN PCB

EN -10

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 1.87MPa to 2.95MPa Unit inlet pressure

Compressor rotational speed 40 s-1 to 80 s-1 *(RPS)

Suction gas temperature 18 °C or below Unit inlet (suction gas) pipe

temperature

Superheat at suction 10 K or above Difference between evaporating temperature

and compressor inlet temperature

Discharge pressure 9.1MPa or below

(except transient)

Compressor outlet pressure

Discharge gas temperature 115 °C or below Compressor outlet temperature

Oil temperature 100 °C or below

(Ambient temperature +10 K or above)

Ambient temperature -15 °C to +43 °C Gas cooler intake air temperature

Power source 50 Hz 380 V / 400 V / 415 V 3N ~Within ±10 % of Rate Voltage

Installation inclination angle 1° or below

ON/OFF cycle period 10 minutes or longer

for ON/OFF cycle

Oil return shall be ensured

Installation Outdoor The foundation shall be rigid enough

Climatic class 0/1/2/3/4/6/8 Please see below “CLIMATIC CLASS”

Net Weight 136 kg

* Operation may not be possible depending on the installed condition.

CLIMATIC CLASS

Test room

climate class

Dry bulb temperature

°C

Relative humidity

Dew point

°C

Water vapour mass

dry air

g/kg

020 50 9.3 7.3

116 80 12.6 9.1

222 65 15.2 10.8

325 60 16.7 12.0

430 55 20.0 14.8

627 70 21.1 15.8

823.9 55 14.3 10.2

Excerpt from: EN ISO 23953

Countermeasures in a cold weather operation

In order to prevent excessive reduction of high pressure in a cold weather location, surrounding around the

refrigeration unit should be made.

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