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V 11/21

PORTABLE AIR CONDITIONER (LOCAL)

ZORI

OPERATING INSTRUCTIONS

Read the instructions carefully before operating the appliance or carrying out maintenance work.

Observe all the safety instructions; failure to observe the instructions may lead to accidents and/or

damage. Store these instructions in a safe place for future reference.

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The Refrigerant R290

 To realize the function of the air conditioner unit, a special refrigerant circulates in the

system. The refrigerant is the fluoride R290 = 3 GWP (Global warming potential). This

refrigerant is flammable and inodorous. It can lead to explosions under certain

conditions, however the flammability of this refrigerant is very low and it can be ignited

only by fire.

 Compared to other common refrigerants, R290 is a non-polluting refrigerant with no harm

to the ozonosphere and a no effect upon the greenhouse effect. R290 has very good

thermodynamic features which lead to a really high energy efficiency. The units therefore

need less filling.

Warning:

Do not try to accelerate the defrosting process or to clean the appliance in different ways other

than those recommended by the manufacturer. Should repair be necessary, contact your

nearest authorized Service Centre. Any repairs carried out by unqualified personnel may be

dangerous. The appliance has to be stored in a room that doesn’t have any continuously

operating ignition sources. (for example: open flames, an operating gas appliance or an

operating electric heater.) Do not pierce or burn.

Appliance has to be installed, used and stored in a room with a floor area larger than 4 m2.

For repairs, strictly follow manufacturer’s instructions only for appliances filled with R290

flammable gas. Be aware that refrigerants do not have any odour.

Appliance is filled with flammable gas R290.

Before installing and using the appliance, read the

owner manual.

Before installing the appliance, read the installation

manual.

Any repairs you need, contact the nearest authorized

Service Centre and strictly follow manufacturer’s

Service Manual.

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GENERAL OPERATING AND SAFETY INSTRUCTIONS

 This appliance is a local air conditioner designed for domestic use.

 Only use this air-conditioner as described in this manual.

 Ensure that the required voltage and frequency 220-240V~ / 50

Hz. match the available power source.

 Fuse style T3.15AH250V, the electricity passing through the fuse

cannot be above 3.15A.

 This appliance can be used by children aged from 8 years and above

and people 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.

 Children shall not play with the appliance.

 Cleaning and user maintenance shall not be made by children

without supervision.

 Ensure that the electricity system is able to deliver the operating

current required by the air conditioner, in addition to that normally

absorbed by other appliances (household appliances, lighting

system, etc.). Please refer to the maximum power input data

indicated on the air conditioner's data plate.

 Connection to the electricity grid must take place in accordance with

current installation standards.

 Ensure that the automatic switches and system protection valves are

able to withstand a start-up current of 6A (normally for less than 1

second).

 The system socket must always be fitted with an efficient earth

connection.

 Make sure that the plug is fully inserted. Do not use multiple

adapters. Do not touch the plug with wet hands. Make sure that the

plug is clean.

 Do not use the plug as a means by which to start/stop the air

conditioner: use the ON/OFF button on the remote control or on the

control panel.

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 Do not install the air conditioner in rooms where it may receive water

splashes (e.g. laundry rooms).

 Before moving or cleaning the device, ensure that it is unplugged

from the socket.

 Do not move the air conditioner while it is operating; first turn the

appliance off, check for any condensate build-up and empty it if

necessary.

 To turn the appliance off, set the remote control to OFF and remove

the plug from the socket. Pull on the plug only. Do not pull the cord.

 Do not use the appliance if the cord or plug are damaged. If the

power supply cable is damaged, it must be replaced by the

manufacturer or its technical assistance service or in any case by a

person with similar qualifications, in order to prevent any risk.

 The appliance must be installed in accordance with national wiring

regulations.

 If the power supply cord is damaged, it must be replaced by the

manufacturer, dealer or a similarly qualified person so as to avoid

any safety risks.

 Keep the unit away from fire, possible fire sources, inflammable or

explosive objects.

 Do not leave the unit unattended while it’s operating, turn the unit off

and unplug it.

 If drainage hose is used, the ambient temperature musnt’t be lower

than 0°C. It can cause water leakage to the air conditioner.

 Do not splash or pour water on the air conditioner

PRECAUTION!

 Do not insert any objects into the air conditioner: this is very

dangerous as the fan turns at high speed.

 Ensure that air circulates freely around the unit. Do not cover

the air intake and delivery grilles with drapes or any other

means.

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WARNING!

 The air conditioner must be positioned at least 50 cm from the wall

or any other obstacles, on a flat and stable surface so as to avoid

water leaks.

 The air conditioner is fitted with a system for protecting the

compressor from overload. This means that the compressor

only starts 3 minutes after its previous stoppage.

 Please wait at least 3 minutes before starting the unit. This helps

prevent the compressor from being damaged.

WARNING!

In the event of an anomaly, switch the appliance off and unplug

it from the socket. Do not dismantle or attempt to repair or modify

the product. In the event of a malfunction, contact the service

centre directly.

WARNING!

 Do not expose the air conditioner to direct sunlight, as the

colour of the materials may change; moreover, the appliance

may overheat causing the protection mechanism to intervene

and switch the appliance off.

 Do not use insecticides, oils, detergents or spray paints near

the appliance; do not use aggressive chemical detergents to

clean the casing: this may damage the finish and colour.

 Close all open windows to maximise air conditioning efficiency.

The manufacturer will not be held liable if safety and accident

prevention rules are not observed.

V 11/21

DESCRIPTION OF THE APPLIANCE

FRONT VIEW

REAR VIEW

1) CONTROL PANEL AND FUNCTION BUTTONS

WITHOUT REMOTE CONTROL

2) HORIZONTAL FINS

3) WHEELS

4) AIR FILTER

5) AIR EXPULSION HOSE END FITTING

6) AIR EXPULSION HOSE

7) REAR CLIP

8) POWER CORD

9) CORD HOOK

10) REMOTE CONTROL

Min/max operating limits (internal temperature)

Cooling: 16 °C DB / 35 °C DB

Dehumidification: 16 °C DB / 35 °C DB

Cooling mode room temperature adjustment range: 16 °C DB / 30 °C DB

V 11/21

Before starting the appliance, press "PUSH" on the air delivery flap to manually open the flaps. To optimize the

air flow, it is advisable to keep the air delivery flaps completely open during operation.

PRE-OPERATING CHECKS AND OPERATIONS

The following space must be maintained to ensure the operating efficiency of the portable air conditioner.

APPLIANCE START-UP

Open the packaging and remove the box from above. Remove the product and the other elements supplied

(illustrated in the box below).

LCD remote control

Type AAA batteries for the

remote control

Round fitting for window (1)

to be positioned between

the end of the tube and the

end fitting for the window

(in the packing it’s the

same fitting installed on

porthole kit (A)

End fitting for window,

supplied into two parts to

be joined with 2 flaps that

fit together (2)

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Flat fitting for positioning

between the air discharge

outlet and the hose

Hose

Cord winder

Drain hose

Screws

Window unit kit (3 pcs)

A+B+C

Round fitting for window unit,

to be positioned between the

end of the tube and the

window unit (A)

Window unit (B) Cap (C)

Position the product vertically on a flat and stable surface, as close as possible to a window and at least 50 cm from walls

or other nearby obstacles.

INSTALLATION OF CORD WINDER HOOKS

Install the cord winder hooks to the back of the unit using

the screws, as shown in the figure.

The hooks must be positioned facing upwards and

downwards.

When the appliance is not being used, wind the power cord

around the hooks.

Wind the cord around the hook.

1. Hook

2. Screw

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USE WITH END FITTING FOR WINDOW

Connect the flat fitting to the hose, extend the hose as far

as necessary for reaching the outside and it connect to

the back of the air conditioner.

Next, slide the flat fitting downwards into the grooves (B) and

secure it with the hook (A).

Connect the round window fitting (1) to the end of the

hose then the end fitting for the window (2), previously

obtained by joining parts A and B

Open the windows and lock one of the two leaves with the

handle.

Place the end fitting against the fixed leaf of the window,

and draw the other leaf towards it.

USE WITH WINDOW UNIT KIT

1. To make the hole in the glass it is advisable to take

the porthole kit accessory to the glazier

2. Insert the window unit into the window.

3. Insert the round fitting onto the flexible pipe.

4. Insert the round fitting into the retractable flexible pipe and

insert the latter with its round fitting into the window unit

without the plug.

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5.Insert the flat fitting onto the hose.

6. Slide the flat fitting downwards into the grooves (B) and

secure it with the hook (A).

7. The outlet must be between 40 cm and 130 cm above the ground. Avoid tight curves or bends in the flexible hose

8. If the air conditioner is not used for prolonged periods, disconnect the pipe and plug the window unit.

Connect the power cord to a suitable electric socket (220-240V~). Insert the supplied batteries into the remote control and

make sure the poles match. Select the desired operating mode from the remote control.

V 11/21

HOW TO USE THE APPLIANCE

This appliance can be used for cooling, dehumidifying and ventilating.

When switching between modes, the fan continues to rotate but the compressor stops: the compressor will start after 3

minutes. This delay protects the compressor from potential damage.

Cooling, Fan Dehumidifying

THE DISCHARGE TUBE MUST ALWAYS BE CONNECTED to the appliance: the only exception is when the

appliance is used solely for dehumidification, in which case it is advisable to let the appliance discharge directly

into the environment for maximum efficiency (consult the "Dehumidification Mode" paragraph).

Regularly clean the air filters beneath the easily removable rear grille to keep the air conditioner working efficiently.

OPERATING MODES

1. COOLING MODE (COOL)

 Press the MODE button to select Cool mode

 The "Cool" LED on the control panel will turn on.

 The temperature can be adjusted to between 16 °C and 30 °C.

 In this mode, whenever the ON/OFF button is pressed, the unit switches off, the appliance saves the temperature

setting and, when switched back on again, retains this setting.

 In this mode, the fan speed can be adjusted and the fan speed, Timer and SLEEP functions can be set.

 For more silent operation, run the fan at low speed.

2. DEHUMIDIFICATION MODE (DRY)



Press the MODE button to select Dry.



The temperature is controlled by the PCB and cannot be regulated.



In this mode, whenever the ON/OFF button is pressed, the unit switches off, the appliance saves the settings

and, when switched back on again, retains them.



The fan speed is set to low and cannot be adjusted.

NOTE

The air conditioner does not cool the room when it is used as a dehumidifier.

When the appliance is used as a dehumidifier, the flexible hose must not be connected.

For maximum dehumidification efficiency, leave the rear discharge attachment free to discharge directly

into the environment.

The dehumidification mode is recommended during autumn and winter.

If used in summer, it is best to leave the flexible hose attached so that the hot air can be discharged

towards the outside rather than into the room.

During dehumidification, continuous drainage should be implemented (consult the next chapter, "CONDENSATE

ELIMINATION").

3. VENTILATION MODE (FAN ONLY)



Press the MODE button to select Fan and wait until the relative icon appears.



In this mode, the fan speed can be adjusted.



The temperature cannot be adjusted.

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HOW TO ELIMINATE CONDENSATE

This appliance automatically vaporises condensate in the cooling mode.

When the air conditioner operates in cooling mode, there is no need to drain condensate continuously; only in certain

weather conditions with very humid air may it occur that water deposits inside the unit. When its inner tank is full, the

air conditioner beeps 8 times and the message "H8" appears on the display to signal that the tank is full and stop

the appliance's operation after 2 minutes.

INSTALLATION OF THE DRAINAGE HOSE

Turn off the appliance and remove the plug from the socket.

Move the unit to a place that is easy to drain the water. Then

remove the cap already installed on the unit and connect

the drainage tube, inserting it into the appropriate hole, and

drain the water into a basin. After you have finished, replace

the cap. Turn on the appliance.

Dehumidification

WARNING!

When using the air conditioner in dehumidification mode, we recommend always ensuring continuous drainage, in

order to maximise dehumidification efficiency.

Use the drainage outlet on the appliance. The water can be drained into a drain by simply connecting a tube with 14 mm

internal diameter (supplied).

Cooling

When the unit operates in the cooling mode, ensure that the rubber

cap closing the drainage opening on the back of the appliance is

properly positioned.

To empty the container, switch the air conditioner off and unplug

the cord. Remove the cap from the rear drainage opening and

place its end over a normal drain. Ensure that the tube is not

twisted or bent. The tube must slope downwards. Re-close the

drainage opening with the cap, insert it into the clamp and resume

use of the air conditioner.

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1. Remove the continuous drain cap by turning it 2. Remove the rubber plug

counter clockwise

3. Insert the drainage hose into drain connector

Avoid bends in the drainage tube.

V 11/21

REMOTE CONTROL OPERATION

1. Press the tab positioned on the back side of remote controller

to remove the cover along the arrow direction

2. Insert the batteries (AAA, LR03, 1,5V - supplied) into the remote

control, respecting the polarity indicated.

3. Put the cover back on.

4. Point the remote control at the receiver on the air conditioner.

5. The remote control should be placed within 6 meters of the

receiver.

6. There must be no obstacles between the remote control and the

receiver.

7. Do not drop or throw the remote control.

8. Do not place the remote control under strong sunlight or under

heating devices and other heat sources.

9. Remove the battery from the remote control when it is not used for

a long time.

10. If there is no sound and the transmission symbol on the display

screen does not flash, the battery needs to be replaced.

11. If the reset occurs when the remote control button is pressed, the

electrical quantity is lacking and the battery must be replaced.

12. Battery waste must be disposed of properly.

Note:

* The image is a general remote control, it contains almost all the

function keys. They may be slightly different for the material (depends

on the model).

INFORMATION FOR CORRECT DISPOSAL OF THE BATTERIES PURSUANT TO EUROPEAN DIRECTIVE

2006/66/EC and amendments Directive 56/2013/EC

Replace the batteries when depleted. At the end of their working life, batteries must be disposed of separately

from unsorted waste. They must be must be delivered to appropriate separated waste disposal plants or to dealers

that provide a similar service. Separate waste disposal of batteries prevents potential negative effects on the

environment and human health resulting from inadequate disposal, and also allows the materials from which it is

made to be recovered and recycled in order to achieve significant savings in terms of energy and resources. The

separate disposal obligation is underlined by the crossed-out dustbin symbol appearing on the battery. Illegal

disposal of the product by the user is subject to administrative penalties as per current regulations.

V 11/21

BUTTONS ON REMOTE CONTROL

1. ON / OFF BUTTON

1. MODE BUTTON

2. TEMPERATURE AND TIMER ADJUSTMENT

BUTTONS

3. FAN BUTTON - VENTILATION SPEED

4. X-FAN BUTTON (only on remote control)

5. SLEEP BUTTON

6. TIMER BUTTON

REMOTE CONTROL DISPLAY

A. Cooling

B. Dehumidification

C. Ventilation

D. Temperature setting

E. Timer setting

F. Speed setting

G. Lock

H. Sleep mode setting

I. X-FAN function

L. Signal transmission

N. T-OFF off timer

M. T-ON on timer

X-

Signal receiver

Display

FOR OPTIMUM OPERATION OF THE REMOTE CONTROL, ADDRESS THE TRANSMITTER HEAD TOWARDS THE

RECEIVER LOCATED ON THE AIR CONDITIONER.

To operate the remote control, press the ON / OFF button on the handset. The icon on the remote control display will flash once

and you will hear a sound signal indicating that the signal has been sent to the air conditioner.

In off mode, the set temperature and set timer will be displayed on the remote control.

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ON/OFF BUTTON

Press this button to switch the unit on or off. When switched on, the device will emit an audible signal and will begin to

operate according to the latest settings (Memory function).

MODE SELECTION BUTTON (MODE)

(on remote control and on the unit)

Press this button to select the various operating modes, according to the following sequence: Cool -> Dry -> Fan

The LEDs on the control panel will light up according to the selected mode.

In COOL mode the display lights up and the set temperature is shown (from 16 ° C to 30 ° C). In DRY and FAN modes

the display does not light up.

Remote control: Press Mode button to select the desired operation mode

In Cool mode, the temperature can be adjusted by pressing + or - buttons.

In Dry mode, the air conditioner operates in low fan speed.

In Fan mode, the fan speed can be adjusted by pressing FAN button

FAN SPEED ADJUSTMENT BUTTON

(on remote control and on the unit)

Press this button when the appliance is on to adjust the fan speed, on the control panel press the FAN button, the LED

indicators will light up at the selected speed in the following sequence: low (Low), medium (Med), high (High), automatic

(auto):

On the remote control, however, the fan speed selection sequence will be as follows:

The fan speed cannot be adjusted in DRY mode and is fixed at low.

+ - ADJUSTMENT BUTTONS

(on remote control and on the unit)

These buttons can be used to adjust the temperature and set the Timer.

The temperature can be adjusted to between 16 °C and 30 °C.

Increase temperature（+):

1) Allows for adjusting the desired temperature in cooling (COOL) mode.

2) Whenever the（

) button is pressed, the set temperature increases by 1 °C.

Decrease temperature (

1) Allows for adjusting the desired temperature in cooling (COOL) mode.

2) Whenever the (

- )

button is pressed, the set temperature decreases by 1 °C.

In dry mode, adjustments cannot be made with these buttons.

The same button allows you to set the TIMER.

By holding down the + or - button for 2 seconds on the remote control, you can quickly set the temperature.

SLEEP BUTTON

(on remote control and on the unit)

Press this button to activate the Sleep function, which automatically adapts the temperature to changes in body and room

temperature throughout the night, so as to optimise comfort when sleeping and minimise consumption.

In cooling mode, the temperature increases by 1 °C in an hour then by 2 °C in two hours, and remains in this setting for the

whole period. The Sleep function is not available in the ventilation, dehumidification and auto modes. The indicator light turns

on display whenever the Sleep function is set the LED on the display lights up, while the Sleep symbol is active on the remote

control.

The Sleep function cannot be activated in Dry (dehumidification) and Fan (ventilation) modes.

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TIMER BUTTON (on both the remote control and portable unit)

Press this button for 1 second to set the timer.

1） Timer-on (automatic switch on)

When the appliance is off, set the time after which you want to turn on the unit. Press the + or - buttons to set the ignition

interval (each press corresponds to 0.5 hours) up to 10 hours. Over 10 hours by pressing the + or - button, each press

corresponds to 1 hour. Press the Timer button to confirm. When the Timer setting is finished, after 5 seconds without

further selections, the display returns to showing the temperature. The Timer Led on the control panel remains illuminated

during the selected time interval.

Remote control: Press the TIMER button. The T-ON and H icons will light up on the remote control. Within 5 seconds,

press the + and - buttons to set the operating time (to scroll the set time more quickly, keep the + and - buttons pressed at

the same time). Press the Timer button again to confirm the set time. The T-ON icon remains on and indicates that the

ignition TIMER is set.

2）Timer-off (automatic switch-off)

When the appliance is turned on, set the time after which you want to turn off the unit. Press the + or - buttons to set the

ignition interval (each press corresponds to 0.5 hours) up to 10 hours. Over 10 hours by pressing the + or - button, each

press corresponds to 1 hour. Press the Timer button to confirm. When the timer setting is finished, after 5 seconds without

further selections, the display returns to showing the temperature. The Timer Led on the control panel remains illuminated

during the selected time interval.

Remote control: Press the TIMER button. The T-OFF and H icons will light up. Within 5 seconds, press the + and - buttons

to set the operating time. Press the TIMER button to confirm the setting. The T-OFF icon remains on and indicates that the

shutdown TIMER is on.

Canceling the timer: If TIMER is set, press TIMER to view the set timer. Press TIMER again to cancel the set TIMER.

To speed up the time selection interval, hold down the + or - buttons for two seconds

X-FAN BUTTON (only on remote control)

In cooling and dehumidification mode it is possible to activate the X-FAN function.

After pressing the X-FAN button on the remote control, with the unit off, the unit's internal fan continues to operate for a

short time at minimum speed, to allow any residual water in the air pipe to dry. If you want to stop this function, press the

X-FAN button on the remote control again

TEMPERATURE AND ERROR DISPLAY

With the exception of message H8, tank full, when an error occurs do not try to repair the air conditioner, always take it to

an Argoclima Service Center, otherwise the guarantee will no longer be valid.

Problem Cause Solution

H8 Tank full of water. Empty the tank.

If the problem persists, contact a service centre.

F1, F2, F4, F0 Contact a service centre.

H3, E8

The room temperature exceeds the appliance's operating

range (beyond 35°) or there is too much humidity. Wait for

the temperature to drop below 35 °C.

Check if the evaporator and compressor are obstructed by

objects. If they are, remove the objects, disconnect the unit

then restore the power supply.

Clear the obstructed ventilation grilles.

If the problem persists, contact a service centre.

The temperature and error display lights up only in the COOL mode. In the DRY and FAN modes the display does not light

up.

SAFETY FUNCTIONS

REMOTE CONTROL LOCK

Simultaneously press "+" and "-" to lock the remote control.

The "Lock" icon will light up on the remote control, and the latter will not respond to commands.

SWITCHING BETWEEN °C AND °F.

Press the "-" and "MODE" buttons simultaneously to switch between °C and °F.

LIGHT FUNCTION

Press the “+” and “FAN” buttons simultaneously for 3 seconds to set the activation/ deactivation of the lamp.

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CARE AND MAINTENANCE

WARNING!

Prior to carrying out any cleaning or maintenance, unplug the unit from the power socket.

1. Cleaning the air filters

The air conditioner is equipped with two filters, one

rear and one side.

The air filters must be checked at least once every

two weeks of operation. Operating with dirty or

clogged filters will decrease the effectiveness of the

air conditioner and can cause serious problems.

To remove the rear filter, unhook the rear grille and

then remove the filter, gently pulling it towards the

side (Filter 1).

The side filter must be removed by pulling the tab

on the filter itself (Filter 2).

Then replace the rear grille.

Use a vacuum cleaner to remove any dust. Should

this not be sufficient, wash the filter with lukewarm

water and neutral detergent (if necessary), rinse it

with cold water then leave it to dry naturally before

putting it back in place. After putting the filter back

in place, close the grille and resume use of the air

conditioner.

2. Cleaning the casing.

Use a soft damp cloth to clean the outer surface of

the air conditioner.

Do not use excessively hot water, solvents, petrol or

other aggressive chemical compounds, talcum

powder and brushes: they may damage the surface

or colour of the casing.

Remove any stains using warm water with a little

neutral detergent.

Do not pour water onto the air conditioner to clean it:

this may damage the internal components or cause

a short circuit.

3. Storage.

When you do not envisage using the air conditioner for a long time, clean the filters before storing it away.

Keep the appliance in a vertical position at all times. Do not place any heavy objects on the

top and, if possible, protect the air conditioner with a plastic sheet.

4. Transport.

Preferably keep the air conditioner in the vertical

position when transporting it.

Should this not be possible, rest it on its right-hand side;

when it reaches its destination, immediately put the

appliance in the vertical position and wait at least 4 hours

before using it in the cooling mode.

5. For complete safety, regularly check the condition of the power cord; should it be damaged through use,

contact the Service Centre to replace it.

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TIPS FOR MAXIMISING COMFORT AND MINIMISING CONSUMPTION

CHECK that:

 the unit's extraction and delivery grilles are always unobstructed;

 the air filters are always clean: a dirty filter will decrease the passage of air and thus reduce the unit

performance;

 the doors and windows are closed, to avoid infiltration of unconditioned air;

 the flexible hose is correctly positioned, without folds or sharp bends;

 the room temperature is above 18 ºC for the cooling mode, and above 10 ºC for dehumidification mode.

REGULATION (EU) No. 517/2014 – F-GAS

The unit contains R290, a natural greenhouse gas with global warming potential (GWP) = 3 - Kg. 0,175 = 0,00052

Tons CO2 equiv.

Do not release R290 into the atmosphere.

INFORMATION FOR THE CORRECT DISPOSAL OF THE PRODUCT IN ACCORDANCE WITH EUROPEAN

DIRECTIVE 2012/19/EU

This appliance may not be scrapped with domestic waste at the end of its life cycle. We call your attention to the

crucial role played by the consumer in the re-use, recycling and other forms of recovery of such waste.

The appliance must be scrapped by a sorted waste disposal centre or by returning it to the retailer (no charge is

levied for this service), when you purchase a new equivalent appliance.

Sorted disposal of electric and electronic equipment prevents the negative effects on the environment and human

health resulting from improper scrapping, and also allows the materials from which it is made to be recovered and

recycled, with significant savings in terms of energy and resources.

The sorted disposal requirement is indicated by the crossed waste bin label affixed to the appliance.

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Specialist’s Manual

Aptitude requirement for maintenance man (repairs. should be done only be specialists).

a) Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid

certificate from an industry-accredited assessment authority, which authorises their competence to handle

refrigerants safely in accordance with an industry recognised assessment specifìcation.

b) Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and

repair requiring the assistance of other skilled personnel shall be carried out under the supevision of the

person competent in the use of flammable refrigerants.

Safety preparation work

The maximum refrigerant charge amount is shown on the following table a

(Note: Please referto the nameplate for the charging quantity of R290)

Room area (m2)

11 15

Maximum charge (kg) <0.152 0.225 0.304

table a - Maximum charge (kg)

Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure

that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be

complied with prior to conducting work on the system.

 Work procedure

Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or

vapour being present while the work is being performed.

 General work area

AII maintenance staff and others working in the local area shall be instructed on the nature of work being

carried out. Work in confined spaces shall be avoided. The area around the workspace shall be sectioned off.

Ensure that the conditions within the area have been made safe by control of flammable material.

 Checking for presence of refrigerant

The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the

technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment

being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or

intrinsically safe.

 Presence of fire extinguisher

lf any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire

extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to

the charging area.

 No ignition sources

No person carrying out work in relation to a refrigeration system which involves exposing any pipe work shall

use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. AII possible

ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation,

repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space.

Prior to work taking piace, the area around the equipment is to be surveyed to make sure that there are no

flammable hazards or ignition risks. "No Smoking" signs shall be displayed.

 Ventilated area

Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or

conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out.

The ventilation should safely disperse any released refrigerant and preferably expel it externally into the

atmosphere.

 Checks to the refrigeration equipment

Where electrical components are being changed, they shall be fit for the purpose and tohe correct

specification. At all times the manufacturer's maintenance and service guidelines shall be followed. lf in doubt,

consult the manufacturer's technical department for assistance.

The following checks shall be applied to installations using flammable refrigerants:

---The actual refrigerant charge is in accordance with the room size within which the refrigerant containing

parts are installed;

---The ventilation machinery and outlets are operating adequately andare not obstructed;

V 11/21 44

---lf an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of

refrigerant;

---Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be

corrected;

---Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any

substance which may corrode refrigerant containing components, unless the components are constructed of

materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

 Checks to electrical devices

Repair and maintenance to electrical components shall include initial safety checks and component inspection

procedures. lf a fault exists that could compromise safety, then no electrical supply shall be connected to the

circuit until it is satisfactorily dealt with. lf the fault cannot be corrected immediately but it is necessary to

continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the

equipment so all parties are advised.

lnitial safety checks shall include:

---That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

---That no live electrical components and wiring are exposed while charging, recovering or purging the system;

---That there is continuity of earth bonding.

 Repairs to sealed components

During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being

worked upon prior to any removal of sealed covers, etc. lf it is absolutely necessary to have an electrical

supply to equipment during servicing, then a permanently operating form of leak detection shall be located at

the most critical point to warn of a potentially hazardous situation.

Particular attention shall be paid to the following to ensure that by working on electrical components, the

casing is not altered in such a way that the level of protection is affected. This shall include damage to cables,

excessive number of connections, terminals not made to originai specification, damage to seals, incorrect

fitting of glands, etc.

• Ensure that the apparatus is mounted securely.

• Ensure that seals or sealing materials have not degraded to the point that they no longer serve the

purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with

the manufacturer's specifications.

NOTE: The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment.

lntrinsically safe components do not have to be isolated prior to working on them.

Repair to intrinsically safe components

Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not

exceed the permissible voltage and current permitted for the equipment in use.

lntrinsically safe components are the only types that can be worked on while live in the presence of a

flammable atmosphere. The test apparatus shall beat the correct rating.

Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of

refrigerant in the atmosphere from a leak.

Cabling

Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any

other adverse environmental effects. The check shall also take into account the effects of aging or continual

vibration from sources such as compressors or fans.

Detection of flammable refrigerants

Under no circumstances shall potential sources of ignition be used in the searching for or detection of

refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.

Leak detection methods

The following leak detection methods are deemed acceptable for all refrigerant systems.

Electronic leak detectors may be used to detect refrigerant leaks but, in the case of flammable refrigerants,

the sensitivity may not be adequate, or may need re-calibration.

(Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential

source of ignition and is suitable for the refrigerant used.

Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to

the refrigerant employed, and the appropriate percentage of gas (25 % maximum) is confirmed.

V 11/21 45

Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chiarine

shall be avoided as the chiarine may react with the refrigerant and corrode the copper pipe-work. If a leak is

suspected, all naked flames shall be removed/extinguished.

If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the

system, or isolated (by means of shut off valves) in a part of the system remote from the leak. For appliances

containing flammable refrigerants, oxygen free nitrogen (OFN) shall then be purged through the system both

before and during the brazing process.

Removal and evacuation

When breaking into the refrigerant circuit to make repairs or for any other purpose conventional procedures

shall be used. However, for flammable refrigerants it is important that best practice is followed since

flammability is a consideration. The following procedure shall be adhered to:

• remove refrigerant;

• purge the circuit with inert gas; evacuate;

• purge again with inert gas;

• open the circuit by cutting or brazing.

The refrigerant charge shall be recovered into the correct recovery cylinders.

For appliances containing flammable refrigerants, the system shall be flushed with OFN to render the unit

safe. This process may need to be repeated several times. Compressed air or oxygen shall not be used for

purging refrigerant systems.

For appliances containing flammable refrigerants, flushing shall be achieved by breaking the vacuum in the

system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere,

and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system.

When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work

to take place. This operation is absolutely vital if brazing operations on the pipe-work are to take place.

Ensure that the outlet for the vacuum pump is not close to any ignition sources and that ventilation is available.

Charging procedures

In addition to conventional charging procedures, the following requirements shall be followed.

- Ensure that contamination of different refrigerants does not occur when using charging equipment.

Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.

- Cylinders shall be kept upright.

- Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.

- Label the system when charging is complete (if not already).

- Extreme care shall be taken not to overfill the refrigeration system.

Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas.

The system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak test

shall be carried out prior to leaving the site.

Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment

and all its detail. lt is recommended good practice that all refrigerants are recovered safely. Prior to the task

being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of

reclaimed refrigerant. lt is essential that electrical power is available before the task is commenced.

a. Become familiar with the equipment and its operation.

b. Isolate system electrically.

c. Before attempting the procedure, ensure that:

• mechanical handling equipment is available, if required, for handling refrigerant cylinders;

• all personal protective equipment is available and being used correctly;

• the recovery process is supervised at all times by a competent person;

• recovery equipment and cylinders conform to the appropriate standards.

d. Pump down refrigerant system, if possible.

e. lf a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of

the system.

f. Make sure that cylinder is situated on the scales before recovery takes place.

g. Start the recovery machine and operate in accordance with manufacturer's instructions

h. Do not overfill cylinders. (No more than 80 % volume liquid charge).

i. Do not exceed the maximum working pressure of the cylinder, even temporarily.

j. When the cylinders have been filled correctly and the process compieted, make sure that the cylinders

and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.

V 11/21 46

k. Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned

and checked.

Labelling

Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label

shall be dated and signed. For appliances containing flammable refrigerants, ensure that there are labels on

the equipment stating the equipment contains flammable refrigerant.

Recovery

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good

practice that all refrigerants are removed safely.

When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are

employed. Ensure that the correct number of cylinders for holding the total system charge are available. AII

cylinders to be used are designated for the recovered refrigerantand labelled for that refrigerant (i.e. special

cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and assodated

shut-off valves in good working arder. Empty recovery cylinders are evacuated and, if possible, cooled before

recovery occurs.

The recovery equipment shall be in good working order with a set of instructions concerning the equipment

that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable,

flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working

order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the

recovery machine, check that it is in satisfactory working order, has been properly maintained and that any

associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult

manufacturer if in doubt.

The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the

relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

lf compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable

level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process

shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor

body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out

safely

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