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SPLIT SYSTEM INVERTER AIR CONDITIONER (REVERSE CYCLE) -

(KASSAC26R3A / KASSAC52R3A) - MANUAL

Safety & Warnings

Handle with care and inspect regularly to ensure the product is in good working order.

If this product, power supply cord or plug shows any signs of damage: stop use, unplug the product and contact
Kogan.com support.

Read all instructions before using the appliance and retain for reference.
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.
This appliance is designed for consumer use: follow directions and use only as described.
Install, use, repair and store only in a room larger than 5m2.
Do not attempt to defrost any components of the unit by accelerated means such as hot water.
Do not pierce or otherwise damage the piping.
 The air conditioner must be installed with a stop valve cover.
Note that refrigerant may be tasteless.
Turn the power off during storms and before cleaning or maintenance
The air conditioner must be grounded. Incomplete grounding may result in electric shocks.
Always switch off the device and cut the power supply when the unit will not be used for a long time.
Don't allow water to contact the product or remote control or touch it with wet hands.
Do not operate the unit if it has been dropped.
Do not clean with water or corrosive liquids.
Do not put hands or any other objects into the air inlets/outlets or allow them to be blocked.
Ensure stand is secure.
Do not allow the air conditioner to blow against heaters.
Do not put weight on the outdoor unit.
If your air conditioner is permanently connected to fixed wiring, an anti-explosion residual current device (RCD)
with rated residual operating current within 30 mA should be installed in the fixed wiring.
This appliance contains no user-serviceable parts. If it suffers any failure or damage, cease usage and contact
Kogan Support after consulting the Troubleshooting section of this manual.

Overview

Indoor Unit

Remote controller functions detailed in Operation.

Outdoor Unit
NOTE: The above diagrams are for illustration purposes only and may differ from the final product.

Important Notes:

Your unit will require connecting pipes which do not come with your product. These pipes are intended to be
supplied and installed by professional installers.
The fan will not start running immediately after heating has started to avoid blowing cool air.
When the weather is sufficiently cold and wet, the outdoor unit may frost over. The air conditioner will start the
defrost function automatically and stop heating, usually for 5-12 minutes. During this time, vapour may come out
of the outdoor unit: this is normal. When defrosting is complete, heating will resume.
When the air conditioner is turned off, the main controller will determine whether to stop immediately or to first run
in low power for a short time.

Operation

Product functions are controlled by the remote controller.

Before first use, install batteries and ensure the "+” and "-" poles are correctly positioned.
Ensure the remote controller is pointed towards the air conditioner without obstructions and a maximum distance
of 8m.
Do not drop or damage the remote controller.
Do not let any liquid in the remote controller.
Do not expose the remote controller directly to sunlight or excessive heat.
If the remote controller does not function normally, remove batteries for 30 seconds before reinstalling. If it does
not work, replace batteries.
Do not mix new and old batteries.
Remove the batteries if not using for a long time.
Dispose of batteries properly.
 Battery replacement.

Remote Control Functions

Number Display Panel Description

Press this button to turn the unit on/off

1. ON/OFF
This will clear the existing timer and SLEEP settings

2. Speed Select the fan speed: Low > Mid > High > Auto (AUTO not available in FAN mode)

3. Display Press to turn display backlight on or off.

4. iFEEL Toggle temperature displays to show ambient/preset temperature.

Set ON timer (when the unit is off) or OFF timer (when the unit is on)
Press the button once, and the indicator will flash
Use the Up and Down buttons to set the number of hours (interval of 0.5 hours from 0.5-10
5. Timer hours, 1 hour from 10-25 hours)
Press again to confirm the setting
Once setting is confirmed, pressing this button again will cancel the setting
When an ON timer is set, all function buttons (except SLEEP, DISPLAY and iFEEL) are valid

6.
 iCLEAN Press with the unit off: the unit will automatically clean the dust off evaporator to increase
cooling and heating efficiency

Up and Down
7. Change temperature by 1°C or make changes during settings
(Set)

8. Turbo Set fan speed to maximum (COOL and HEAT modes)

9. Mode Select mode: Auto > Cool > Dry > Heat > Fan

10. Sleep Sleep for 10 hours and resume operation (cannot be activated in FAN mode)

11. Swing Press to activate louvre swing

When the unit is turned off with the remote controller (COOL, DRY or AUTO modes), it will
operate in HEAT mode with the internal fan running with at low power for 3 minutes before
stopping in order to reduce moisture and prevent mould
To turn the function on or off, press the Anti-F button with the unit turned off and it will beep
12. Anti-F to confirm: once set, this function will remain enabled except when the unit is power off or
until it is cancelled
This function is not set by default

Note: With Anti-F activated, the unit should not be turned ON again until it is fully OFF. The anti-F
function will be invalid when the OFF timer is set.

Automatic Operation Mode

1. Press the “MODE” button to select the automatic operation mode.

2. Press the “SPEED” button to select the fan speed from LOW, MID, HIGH, AUTO.
3. Press the “ON/OFF” button to begin operation.
4. Press the “ON/OFF” button again to stop the air-conditioner.

Note: Temperature cannot be set / will not take effect in fan operation mode.

Cooling / Heating Mode

1. Press the “MODE” button to select Cooling/Heating mode.

2. Set the temperature with the up and down buttons.
3. Press the "SPEED” button to select the fan speed from LOW, MID, HIGH, AUTO.
4. Press the "ON/OFF” button to begin operation.
5. Press the "ON/OFF” button again to stop the air-conditioner.

Fan Operation Mode

1. Press the “MODE” button to select the fan operation mode.

2. Press the “SPEED” button to select the fan speed from LOW, MID, HIGH, AUTO.
3. Press the “ON/OFF” button to begin operation.
4. Press the “ON/OFF” button again to stop the air-conditioner.

Note: Temperature cannot be set / will not take effect in fan operation mode.
Drying Operation Mode

1. Press the "MODE” button to select the drying operation mode.

2. Set the temperature with the up and down buttons.
3. Press the "SPEED” button to select the fan speed from LOW, MID, HIGH, AUTO.
4. Press the "ON/OFF” button to begin operation.
5. Press the "ON/OFF” button again to stop the air-conditioner.

Note: Temperature cannot be set / will not take effect in fan operation mode.

Cleaning & Care

Warnings

Shut down the air conditioner and leave off for 5 minutes before cleaning.
Do not use volatile liquids such as thinner or gasoline. Do not allow the interior of the air conditioner to become
wet.
Pay attention to the state of the filter. If it becomes clogged with dust, this can adversely affect product function.
After removing the filter, do not touch the fin part of the indoor unit or exert any force on the refrigerant pipeline.

Cleaning Panel

Clean panel surface with a soft dry cloth or a damp cloth moistened with a neutral detergent. Do not remove the panel
and take care that water does not get in the product.

Cleaning the Air Filter

 1. Remove the air filter by opening the panel with both hands and pulling the filter out downwards.
Use a vacuum cleaner or water to rinse filter. If it is very dirty, dissolve a mild detergent into warm water (below
45°C).
2. Allow the filter to dry fully by air.
3. Reinstall by following removal steps in reverse.

Before Use

1. Ensure air inlets and outlets are unblocked.

2. Ensure there is no blockage in the water outlet of the drain pipe.
3. Ensure the ground wire is reliably grounded.
4. Ensure batteries are installed in the remote control and have sufficient power.
5. Ensure the outdoor unit mounting bracket is undamaged. If there is, contact Kogan.com.

After Use

1. Turn off the power and remove batteries from the remote control.
2. Clean filter and unit body.
3. Remove dust and debris from the outdoor unit.

Troubleshooting

Issue Possible Cause Steps to Resolve

Power outage, blown fuse, loose power

Check power and retry
plug
Not turning on

ON timer set Wait or cancel the timer setting

Does not run after being turned off Expected function: protective switch will delay operation for 3-5 minutes after being
and on on powered off

Set temperature reached Expected function

Stops running after a while Defrosting Will resume automatically

Shutdown timer set Check and resume

 Cooling/heating ineffective Dust or blockage Check and clear

Windows/doors opened, blocked exhaust

Check and resume
fan

Incorrect mode setting Check mode and temperature

Environmental issue Check environment

Odour produced
Mould buildup Activate cleaning function

Sound of running water Flow of refrigerant Expected function

Thermal expansion/contraction of unit

Click at startup/shutdown Expected function
parts

Fan, compressor switched on/off Wait

Abnormal sound Sound from defrosting Expected function

Dust or blockage Check and clear

Ambient humidity high Expected function

Drops of water on the surface of

Prolonged cooling in open space Close windows/doors
the indoor unit

The angle of louvre blades too small Increase angle of louvre blades

Can occur with high temperature and

The mist produced during cooling Expected function
humidity

The Air Conditioner initially turns

Manually clean the filters of your Air
on, but then slowly it turns down The filters are blocked.
Conditioner.
until it turns off.

Installation Guide

Notices Before Installation

This unit must only be installed, moved or uninstalled by an authorised service centre according to national safety
and electrical requirements and this manual
Refrigerant leak tests must be made after installation.
When installing or repairing: if the connecting line is not long enough, the entire connecting line must be replaced
and not extended.
Unpacking

Open the box and check the air conditioner in an area with good ventilation. Open the door and window.
Operators must wear anti-static devices.
A professional must determine whether there is refrigerant leakage before opening the outdoor unit box.
Fire prevention and anti-static devices must be installed before checking.
Ignition sources, smoking and calling must not take place in an area where R32 refrigerant is located.
Keep leak detector in working state during installation.
If leakage occurs, resolve it immediately.
Keep electric appliances, power switches, plugs, sockets, high-temperature heat sources and high static away
from the area underneath the indoor unit’s sidelines.
Install in a location accessible for maintenance.

Installation Position Requirements

Avoid positions with inflammable or explosive gas leakage or where there are strongly aggressive gases.
Avoid places subject to strong artificial electric/magnetic fields.
Avoid places subject to noise and resonance.
Avoid severe natural conditions (e.g. heavy lampblack, strong sandy wind, direct sunshine or high-temperature
heat sources)
Avoid places within the reach of children.
Shorten the connection between the indoor and outdoor units.
Do not install the outdoor unit in any way that could occupy an aisle, stairway, exit, fire escape, catwalk or any
other public area.
Install the outdoor unit as far as possible from the doors and windows of the neighbours as well as green plants.

Installation Environment Inspection

Check nameplate of the outdoor unit to ensure the refrigerant is R32.

Check the floor space of the room, it should not be less than usable space (sm2) in the specification. Install the
outdoor unit in a well-ventilated place.
Check the surrounding environment of installation site: R32 shall not be installed in the enclosed reserved space of
a building.
When using an electric drill to make holes in the wall, check first whether there is an existing pipeline for water,
electricity and gas. It is suggested to use the reserved hole in the roof of the wall.

Mounting Structure

The mounting rack must meet the relevant national or industrial standards in ferms of strength with welding and
connection areas rustproofed.
The mounting rack and its load carry surface shall be able to withstand 4 times or above the weight of the unit, or
2OOkg, whichever is heavier.
Fasten the mounting rack of the outdoor unit with an expansion bolt.
Ensure installation is secure regardless of what type of wall on which it is installed, to prevent potential dropping
that could hurt people.

Electrical Safety Requirements

Be sure to use the rated voltage and air conditioners dedicated circuit for the power supply, and the power cord
diameter must meet the national requirements.
When the maximum current of an air conditioner is ≥16A, it must use the air switch or leakage protection switch
equipped with protection devices.
 The operating range is 90%-110% of the local rated voltage. But insufficient power supply malfunction, electrical
shock, or fire. If the voltage instability proposed to increase the voltage regulator.
The minimum clearance between the air conditioner and the combustibles is 1.5 m.
The interconnection cord connects the indoor and outdoor units. You must first choose the right cable size before
preparing it for connection.
Cable Types: Outdoor Power Cable - H07RN-F or H05RN-F; Interconnection cord - H07RN-F or H05RN-F;
Minimum Cross-Sectional Area of Power cable and interconnection cord.

The size of the interconnection cord, power cable, fuse, and switch needed is determined by the maximum current
of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit. Refer to this
nameplate to choose the right cable, fuse, or switch.
Note: Core number of cable refers to the detailed wiring diagram adhered on the unit which you purchased.

Raised Height Operation Requirements

When carrying out the installation at 2m or higher above the base level, safety belts must be worn and ropes of
sufficient strength are securely fastened to the outdoor unit, to prevent falling that could cause personal injury or
death as well as property loss.

Grounding Requirements

The air conditioner is the class I electrical appliance and must ensure a reliable grounding.
Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, telephone line, or a circuit poorly
grounded to the earth.
The grounding wire is specially designed and shall not be used for other purposes, nor shall it be fastened with a
common tapping screw.
Interconnection cord diameter should be recommended as per instruction manual, and with type O terminal that
meet local standards (internal diameter of type O terminal needs to match the screw size of the unit, no more
than 4.2mm). After installation, check the screws whether have been fixed effectively, and there is no risk of
loosening.

Other

The connection method of the air conditioner and the power cord and the interconnection method of each
independent element shall be subject to the wiring diagram affixed to the machine.
The model and rating value of the fuse shall be subject to the silkscreen on the corresponding controller or fuse
sleeve.
Included Parts & Accessories

Included Parts in the Indoor Unit

Name Quantity
Indoor Unit 1
Remote Controller 1
Batteries 2
User Manual 1
Darin Pipe 1

Included Parts in the Outdoor Unit

Name Quantity

Outdoor Unit 1

Pipe Protection Ring 1

Luting (putty) 1

NOTE: There may be minor differences in the included parts.

Refrigerant piping size

The diameter The diameter Stop Valve

of the Inlet of the Outlet Standard Pipe Max Pipe Max Installation Outlet
Model
Copper Pipe Copper Pipe Length (m) Length (m) Fall Connector
(mm) (mm) Diameter (mm
KASSAC26R3A 6/6.35 9.52 3.6 20 10 6/6.35
KASSAC52R3A 6/6.35 16 3.6 20 15 9.52

Indoor Unit Installation

 Mounting plate

1. The wall for installation of the indoor unit shall be hard

and firm, so as to prevent vibration.
2. Use the "+" type screw to fasten the pegboard, horizontally
mount the pegboard on the wall, and ensure the lateral
horizontal and longitudinal vertical.
3. Pull the pegboard by hand after the installation, to confirm
whether it is solid.

Wall-through Hole

Make a hole with an electric hammer or a

water drill at the predetermined position on
the wall for piping, which shall slant outwardly
by 5°-10°.
To protect the piping and the cables from
being damaged running through the wall, and
from the rodents that may inhabit in the
hollow wall, a pipe protecting ring shall be
installed and sealed with putty.

Note: Usually, the wall hole is Ø60mm~Ø80mm.

Avoid pre-buried power wire and hard wall when
making the hole.

Route of Pipeline

1. Depending on the position of the unit, the piping may be routed sideways from the left or the right ( Fig 1 ), or vertically from th
Fig 2 )(depending on the pipe length of the indoor unit). In the case of sideway routing, cut off the outlet cutting stock of the o
side.
 Drainpipe connection

1. Remove the fixed part to pull out the pipe of the indoor machine from the case. Screw the hexagon nut in the left of the joint t
end with your hand.
2. Connect the connecting pipe to the indoor unit: Aim at the pipe centre, tighten the Taper nut with fingers, and then tighten th
Taper nut with a torque wrench, and the direction is shown in the diagram on the right. The torque used is shown in the follow
table.

Note: Carefully check if there is any damage of joints before installation. The joints shall not be reused, unless after re-flaring the pip

Wrap the Piping

1. Use the insulation sleeve to wrap the joint part the indoor unit and the connection pipe, and then use insulating material to pa
and seal insulation pipe, to prevent the generation of condensate water on the joint part.
2. Connect the water outlet with drain pipes, and make the connection pipe, cables, and the drain hose straight.
3. Use plastic cable ties to wrap the connecting pipes, cables and drain hose. Run the pipe sloping downward.

Fixing the Indoor Unit

1. Hang the indoor unit on the pegboard, and

move the unit from left to right to ensure that the
hook is properly positioned in the pegboard.
2. Push toward the lower left side and the upper
right side of the unit toward the pegboard, until
 the hook is embedded in the slot and makes a
"click" sound.

Wiring diagram

If your air conditioner is provided with interconnection cord, the wiring of the indoor unit is connected in the factory, there is
no need of connection.
If the interconnection cord is not provided, a connection is needed in accordance with the

After installation, check:

1. the screws whether have been fixed effectively, and there is no risk of loosening.
2. Connector of display board whether put in the right place and do not touch the terminal board.
3. Control box cover whether cover tightly.

Note: Depending on product revision, minor differences in wiring may exist, detailed on the diagram adhered to the
product.

Dimension drawing of outdoor unit installation

 Install the connection pipe

Outdoor Unit Installation

Wiring Connection

1. Loosen the screws and remove E-parts cover from the unit.
2. Connect the cables respectively to the corresponding
terminals of the terminal board of the outdoor unit (see the
 wiring diagram), and if there are signals connected to the
plug, just conduct butt joint.
3. Ground wire: Remove the grounding screw out of the
electric bracket, cover the grounding wire end onto the
grounding screw and screw it into the grounding hole.
4. Fix the cable reliably with fasteners (Pressing board).
5. Put the E-parts cover back in its original place and fasten it
with screws.

Wiring diagram

Note: Depending on product revision, minor differences in wiring may exist, detailed on the diagram adhered to the
product.

Vacuuming

★ Exclusive R32 refrigerant pump must be used in making R32

refrigerant vacuum.

Before working on the air conditioner, remove the cover of the

stop valve (gas and liquid valves) and be sure to retighten it
afterwards (to prevent the potential air leakage)

1. To prevent air leakage and spilling tighten all connecting

nut of all flare tubes.
2. Connect the stop valve, charge hose, manifold valve, and
vacuum pump.
3. Fully open the handle Lo of the manifold valve and apply
vacuum for at least 15 minutes and check that the
compound vacuum gauge reads -0.1MPa(-76cmHg).
 4. After applying vacuum, fully open the stop valve with a hex
wrench.
5. Check that both indoor and outdoor connections are free of
air leakage.

Optional: Outdoor condensation drainage (Heat pump type only)

When the unit is heating, the condensing water and defrosting

water can be out reliably through the drain hose.

Installation:

Install the outdoor drain elbow (not included) in Ø25 hole on the
base plate, and join the drain hose to the elbow so that the
wastewater formed in the outdoor unit can be drained out to a
proper plate.

Post-Installation

Check After Installation

★ Electrical Safety Check

1. If the supply voltage is as required.
2. If there is any faulty or miss connection in each of the power, signal and grounding wires.
3. If the grounding wire of the air conditioner is securely grounded.

★ Installation Safety Check

1. If the installation is secure.
2. If the water drain is smooth.
3. If the wiring and piping are correctly installed.
4. Check that no foreign matter or tools are left inside the unit.
5. Check the refrigerant pipeline is protected well.

★ Leak test of the refrigerant

Depending on the installation method, the following methods may be used to check for suspect leak, on areas such as the four
connections of the outdoor unit and the cores of the cut-off valves and t-valves:

1. Bubble method: Apply of spray a uniform layer of soap water over the suspected leak spot and observe carefully for bubbles.
2. Instrument method: Checking for a leak by pointing the probe of the leak detector according to the instruction to the suspect
points of a leak.

Note: Make sure that the ventilation is good before checking.

Test Operation

Test Operation preparation:

Verify that all piping and connection cables are well connected.
Confirm that the values at the gas side the liquid-side are fully open.
Connect the power cord to an independent power socket.
 Install batteries in the remote control.

Note: Make sure that the ventilation is good before testing.

Test Operation method:

1. Turn on the power and push the ON/OFF switch button of the remote controller to start the air conditioner.
2. Select COOL, HEAT (not available on cool-only models), SWING and other operation modes with the remote controller and s
the operation is working correctly.

Maintenance

See safety and warnings section.

Qualification Requirements of Maintenance Personnel

1. Special training additional to usual refrigerating equipment repair procedures is required when equipment with flammable
refrigerants is affected. In many countries, this training is carried out by national training organisations that are accredited to t
the relevant national competency standards that may be set in legislation. The achieved competence should be documented
certificate.
2. The maintenance and repair of the air conditioner must be conducted according to the method recommended by the
manufacturer. If other professionals are needed to help maintain and repair the equipment, it should be conducted under the
supervision of individuals who have the qualification to repair AC equipped with flammable refrigerant.

Inspection of the Site

Safety inspection must be taken before maintaining equipment with R32 refrigerant to make sure the risk of fire is minimized. Chec
whether the place is well ventilated, whether anti-static and fire prevention equipment is perfect.

While maintaining the refrigeration system, observe the following precautions before operating the system.

Operating Procedures

1. General work area:

All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confi
spaces shall be avoided. The area around the workspace shall be sectioned off. Ensure that the conditions within the area have be
made safe by control of flammable material.

2. 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 applic
refrigerants, i.e.non-sparking, adequately sealed or intrinsically safe.

3. Presence of fire extinguisher:

If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment
be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

4. No ignition sources:
No person carrying out work in relation to a refrigeration system which involves exposing any pipework shall use any sources of ignit
such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be ke
sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released
the surrounding space. Prior to work taking place, 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.
5. Ventilated Area(open the door and window):
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 release
refrigerant and preferably expel it externally into the atmosphere.

6. Checks to the refrigeration equipment:

Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the
manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical departmen
assistance. The following checks shall be applied to installations using flammable refrigerants:
• The charge size is in accordance with the room size within which the refrigerant containing parts are installed.
• The ventilation machinery and outlets are operating adequately and are not obstructed.
• If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
• Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may co
refrigerant containing components unless the components are constructed of materials which are inherently resistant to being corr
or are suitably protected against being so corroded.

7. Checks to electrical devices:

Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fau
exists that could compromise the safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with
the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used
shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
• That capacitors are discharged: this shall be done in a safe manner to avoid the possibility of sparking.
• That no live electrical components and wiring are exposed while charging, recovering or purging the system.
• Keep continuity of earthing.

Inspection of Cable
Check the cable for wear, corrosion, overvoltage, vibration and check if there are sharp edges and other adverse effects in the
surrounding environment. During the inspection, the impact of aging or the continuous vibration of the compressor and the fan on
should be taken into consideration.

Leakage check of R32 refrigerant

Note: Check the leakage of the refrigerant in an environment where there is no potential ignition source. No halogen probe (or any o
detector that uses an open flame) should be used.
Leak detection method:
For systems with refrigerant R32, electronic leak detection instrument is available to detect and leak detection should not be condu
in an environment with refrigerant. Make sure the leak detector will not become a potential source of ignition and is applicable to th
measured refrigerant. Leak detector shall be set for the minimum ignitable fuel concentration (percentage) of the refrigerant. Calib
and adjust to proper gas concentration (no more than 25%) with the used refrigerant.
The fluid used in leak detection is applicable to most refrigerants. But do not use chloride solvents to prevent the reaction between
chlorine and refrigerants and the corrosion of the copper pipeline.
If you suspect a leak, then remove all the fire from the scene or put out the fire.
If the location of the leak needs to be welded, then all refrigerants need to be recovered or isolate all refrigerants away from the lea
(using cut-off valve). Before and during the welding, use OFN to purify the entire system.

Removal and Vacuum Pumping

1. Make sure there is no ignited fire source near the outlet of the vacuum pump and the ventilation is well.
2. Allow the maintenance and other operations of the refrigeration circuit should be carried out according to the general procedure
the following best operations that the flammability is already taken into consideration are the key. You should follow the following
procedures:
• Remove the refrigerant.
• Decontaminate the pipeline by inert gases.
• Evacuation.
• Decontaminate the pipeline by inert gases again.
• Cut or weld the pipeline.
3. The refrigerant should be returned to the appropriate storage tank. The system should be blown with oxygen-free nitrogen to ens
safety. This process may need to be repeated for several times. This operation shall not be carried out using compressed air or oxyg
Through the blowing process, the system is charged into the anaerobic nitrogen to reach the working pressure under the vacuum s
then the oxygen-free nitrogen is emitted to the atmosphere, and in the end, vacuumize the system. Repeat this process until all
refrigerants in the system is cleared. After the final charging of the anaerobic nitrogen, discharge the gas into the atmosphere press
and then the system can be welded. This operation is necessary for welding the pipeline.

Procedures of Charging Refrigerants

As a supplement to the general procedure, the following requirements need to be added:
- Make sure that there is no contamination among different refrigerants when using a refrigerant charging device. The pipeline for
charging refrigerants should be as short as possible to reduce the residual of refrigerants in it.
- Storage tanks should remain vertically up.
- Make sure the grounding solutions are already taken before the refrigeration system is charged with refrigerants.
- After finishing the charging (or when it is not yet finished), label the mark on the system.
- Be careful not to overcharge refrigerants.

Scrap and Recovery

Scrap:
Before this procedure, the technical personnel shall be thoroughly familiar with the equipment and all its features, and make a
recommended practice for refrigerant safe recovery. For recycling the refrigerant, shall analyze the refrigerant and oil samples befor
operation. Ensure the required power before the test.
1. Be familiar with the equipment and operation.
2. Disconnect the power supply.
3. Before carrying out this process, you have to make sure:
• If necessary, mechanical equipment operation should facilitate the operation of the refrigerant tank.
• All personal protective equipment is effective and can be used correctly.
• The whole recovery process should be carried out under the guidance of qualified personnel.
• The recovering of equipment and storage tank should comply with the relevant national standards.
4. If possible, the refrigerating system should be vacuumized.
5. If the vacuum state can't be reached, you should extract the refrigerant in each part of the system from many places.
6. Before the start of the recovery, you should ensure that the capacity of the storage tank is sufficient.
7. Start and operate the recovery equipment according to the manufacturer's instructions.
8. Don't fill the tank to its full capacity (the liquid injection volume does not exceed 80% of the tank volume).
9. Even the duration is short, it must not exceed the maximum working pressure of the tank.
10. After the completion of the tank filling and the end of the operation process, you should make sure that the tanks and equipmen
should be removed quickly and all closing valves in the equipment are closed.
11. The recovered refrigerants are not allowed to be injected into another system before being purified and tested.
Note: The identification should be made after the appliance is scrapped and refrigerants are evacuated. The identification should
contain the date and endorsement. Make sure the identification on the appliance can reflect the flammable refrigerants contained
this appliance.

Recovery:
1. The clearance of refrigerants in the system is required when repairing or scrapping the appliance. It is recommended to complete
remove the refrigerant.
2. Only a special refrigerant tank can be used when loading the refrigerant into the storage tank. Make sure the capacity of the tan
appropriate to the refrigerant injection quantity in the entire system. All tanks intended to be used for the recovery of refrigerants sh
have a refrigerant identification (i.e. refrigerant recovery tank). Storage tanks should be equipped with pressure relief valves and glob
valves and they should be in good condition. If possible, empty tanks should be evacuated and maintained at room temperature b
use.
3. The recovery equipment should be kept in a good working condition and equipped with equipment operating instructions for eas
 access. The equipment should be suitable for the recovery of R32 refrigerants. Besides, there should be a qualified weighing appara
which can be normally used. The hose should be linked with detachable connection joint of zero leakage rate and be kept in a good
condition.
Before using the recovery equipment, check if it is in good condition and if it gets perfect maintenance. Check if II electrical compo
are sealed to prevent the leakage of the refrigerant and the fire caused by it. If you have any question, please consult the manufact
4. The recovered refrigerant shall be loaded in the appropriate storage tanks, attached with a transporting instruction, and returned
the refrigerant manufacturer. Don't mix refrigerant in recovery equipment, especially a storage tank.
5. The space loading R32 refrigeration can't be enclosed in the process of transportation. Take anti-electrostatic measures if neces
in transportation. In the process of transport, loading and unloading, necessary protective measures must be taken to protect the a
conditioner to ensure that the air conditioner is not damaged.
6. When removing the compressor or clearing the compressor oil, make sure the compressor is pumped to an appropriate level to e
that there is no residual R32 refrigerants in the lubricating oil. The vacuum pumping should be carried out before the compressor is
returned to the supplier. Ensure safety when discharging oil from the system.

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