emerio PAC-122839 Mobile Air Conditioner Instruction Manual

emerio PAC-122839 Mobile Air Conditioner

SAFETY INSTRUCTIONS

Before use make sure to read all of the below instructions in order to avoid injury or damage, and to get the best results from the appliance. Make sure to keep this manual in a safe place. If you give or transfer this appliance to someone else make sure to also include this manual. In case of damage caused by user failing to follow the instructions in this manual the warranty will be void. The manufacturer/importer accepts no liability for damages caused by failure to follow the manual, a negligent use or use not in accordance with the requirements of this manual.

1. Read and save these instructions. Attention: pictures in the instructions are for reference only.
2. 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.
3. Children shall not play with the appliance.
4. Cleaning and user maintenance shall not be made by children without supervision.
5. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
6. Indoor use only.
7. Do not use the unit in an area: near to source of fire; where oil is likely to splash; exposed to direct sunlight; where water is likely to splash; near a bath, a laundry, a shower or a swimming pool.
8. Never insert your fingers, rods into the air outlet. Take special care to warn children of these dangers.
9. Keep the unit upward while transport and storage, for the compressor locates properly.
10. Before cleaning or moving the appliance, always turn off and disconnect the power supply.
11. To avoid the possibility of fire disaster, the appliance shall not be covered.
12. All the air-conditioner sockets must comply with the local electric safety requirements. If necessary, please check it for the requirements.
13. The appliance shall be installed in accordance with national wiring regulations.
14. Details of type and rating of fuses：T, 250V AC, 2A or 3.15A.
15. Contact authorized service technician for repair or maintenance of this unit.
16. Do not pull, deform or modify the power supply cord, or immerse it in water. Pulling or misuse of the power supply cord can result in damage to the unit and cause electrical shock.
17. Compliance with national gas regulations shall be observed.
18. 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 supervision of the person competent in the use of flammable refrigerants.
19. Do not operate or stop the unit by inserting or pulling out power plug, it may cause electric shock or fire due to heat generation.
20. Unplug the unit if strange sounds, smell, or smoke comes from it.
21. Always plug the appliance into an earthed plug socket.
22. In case of any damage, please turn off the switch, disconnect the power supply, and contact an authorized service center for repair.
23. Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
24. The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater.)
25. Do not pierce or burn.
26. Be aware that refrigerants may not contain an odour.
27. This appliance contains R290 refrigerant gas. R290 is a refrigerant gas that complies with the European directives on the environment. Do not puncture any part of the refrigerant circuit.
28. If the appliance is installed, operated or stored in an unventilated area, the room must be designed to prevent to the accumulation of refrigerant leaks resulting in a risk of fire or explosion due to ignition of the refrigerant caused by electric heaters, stoves, or other sources of ignition.
29. The appliance must be stored in such a way as to prevent mechanical failure.
30. Individuals who operate or work on the refrigerant circuit must have the appropriate certification issued by anaccredited organization that ensures competence in handling refrigerants according to a specific evaluation recognized by associations in the industry.
31. Repairs must be performed based on the recommendation from the manufacturing company. Maintenance and repairs that require the assistance of other qualified personnel must be performed under the supervision of an individual specified in the use of flammable refrigerants.
32. Always let the appliance rest for at least 2 hours after moving it from one location to another.
33. Regarding the instructions for repairing appliances containing R290, please kindly refer to below paragraphs.

• Warning: Risk of fire / Flammable materials.
• Read instruction manuals.
• Operator’s manual; operating instructions.
• Service indicator; read technical manual.

Warning

• Keep ventilation openings clear of obstruction.
• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
• All working procedure that affects safety means shall only be carried out by competent persons.
• The required distance around the unit should be at least 30cm.

Appliance shall be installed, operated and stored in a room with a floor area larger than X m2

5000Btu/h,7000Btu/h,

8000Btu/h

| 4| –
9000Btu/h,10000Btu/h,

10500Btu/h

| 12| –
12000Btu/h,14000Btu/h,

16000Btu/h,18000Btu/h

| 15| PAC-127068.2

PARTS DESCRIPTION

1. Control panel
2. Air outlet
3. Wheel
4. Louver to control the up and down wind direction
5. Air filter
6. Handle
7. Power cord
8. Power cord storage
9. Hot air exhaust outlet
10. Bracket for hose connector (Air conditioner end)
11. Air inlet
12. Drain port
13. Rubber stopper to the drain port
14. Rubber boot
15. Hot air exhaust hose
16. Hose connector (Air conditioner end)
17. Hose connector (Window end)
18. Remote control

Remote control

This unit has a remote control. 2 x 1.5V AAA batteries are to be installed. The functions of the remote control buttons are the same as of the buttons on the control panel.

Control panel

1. Power button
2. Temperature (timer) increasing button
3. Temperature (timer) decreasing button
4. Remote control signal receiver window
5. Mode button
6. Wind speed button
7. Timer on/off button
8. Water full indicator light
9. High speed indicator light
10. Low speed indicator light
11. Timer indicator light
12. Digital display
13. Cooling mode indicator light
14. Dehumidification mode indicator light
15. Fan mode indicator light

INSTALLATION

(The pictures below are for the guideline to install the appliance. The appearance of the appliance may be different from the product you purchased.)

• The unit shall be installed on a flat surface where the air outlet would not be blocked. The required distance around the unit should be at least 30cm. (Fig.1)
• The unit shall not be installed in a laundry room.
• Twist both hose connectors onto the hot air exhaust hose. (Fig.2)
• Insert the hose connector (Air conditioner end) into the brackets on the back of the unit. (Fig.3)
• Put the other end of the exhaust hose to the nearby windowsill. (Fig.4)

OPERATION

Always let the appliance rest for at least 2 hours after moving it from one location to another. Before use, check up whether the exhaust hose has been mounted properly. Plug in the appliance.

1. Power button
   • Press the button “POWER” to turn on the appliance. The appliance will begin to work under cooling mode at low wind speed. Press the button again, the appliance will be turned off.
2. Temperature (timer) increasing button & temperature (timer) decreasing button
   • Press the button “TEMP+”/”TEMP-” to set your desired room temperature from 16℃ to 31℃. The buttons can also be used for timer adjustment from 1-24 hours during timer setting. The value will be increased/decreased by 1 (℃/hour) for each press. Long press for rapid adjustment. Please note: The appliance will turn off the compressor (for cooling) automatically once the room temperature reaches the set temperature. The compressor will be turned on automatically when the room temperature increases above the set temperature. The fan inside is always working throughout this process. When the compressor is working, the unit will vibrate slightly. This is normal and harmless.
3. Wind speed button
   • Press the button “SPEED” to switch the wind speed between low and high. The corresponding indicator light “LOW”/”HIGH” will illuminate.
4. Mode button
   • Press the button “MODE” to choose your desired working mode among cooling, dehumidification, and fan.
   • Under cooling mode, the corresponding indicator light “COOL” will illuminate. Press the button “TEMP+”/”TEMP-” to set your desired room temperature. Press the button “SPEED” to set your desired wind speed.
   • Under dehumidification mode, the corresponding indicator light “DEHUM” will illuminate. The appliance will automatically set the working temperature (2℃ below the current room temperature) and set the wind speed at low. Temperature and wind speed cannot be adjusted manually.
   • Under fan mode, the corresponding indicator light “FAN” will illuminate. Press the button “SPEED” to switch the wind speed between low and high. Please note: Under this mode, no temperature function is equipped. The digital display shows a value and that is meaningless.
5. Timer on/off button
   • Timer ON setting:
   • When the appliance is OFF, press the button “TIMER”, the corresponding indicator light “TIMER” will illuminate.
   • Press the button “TEMP+”/”TEMP-” to select a desired ON time from 1-24 hours. The “Preset ON Time” will flash on the digital display.
   • Press the button “TIMER” again (when still flashing) and the setting will be in effect.
   • The appliance will automatically turn on once the “Preset ON Time” has passed.
   • Timer OFF setting:
   • When the appliance is ON, press the button “TIMER”, the corresponding indicator light “TIMER” will illuminate.
   • Press the button “TEMP+”/”TEMP-” to select a desired OFF time from 1-24 hours. The “Preset OFF Time” will flash on the digital display. Press the button “TIMER” again (when still flashing) and the setting will be in effect.
   • The appliance will automatically turn off once the “Preset OFF Time” has passed.

Note

• The digital display will show the countdown time by hour after the timer is set. Press the button “TIMER” again, the timer function will be canceled.
• The appliance will keep working with the previous set mode once turned on again without being unplugged. If the appliance has been disconnected before, it will begin to work under cooling mode at low wind speed once turned on again.

CAUTIONS: for cooling and dehumidification operations:

• When using functions on cooling and dehumidification, keep an interval of at least 3 minutes between each power on or off.
• Power supply shall meet the requirements.
• The socket is suitable for AC use.
• Do not share one socket with other appliances.
• Power supply is AC220-240V, 50Hz.

Water full alarm

• Under normal use, the unit can evaporate the condensed water automatically, and little of water will be accumulated in the inner water tray.
• As soon as the condensed water collected in the inner water tray reaches a certain height, a water full alarm will be sent out: the water full indicator light will illuminate, and the digital display will show “E2” code approx. 5 minutes later.
• Thus, when the water full alarm occurs, please drain the water in the water tray. Remove the rubber boot and then the rubber stopper from the drain port at the bottom of the unit, and drain out the water.

Continuous drainage

Continuous drainage can be used to avoid the water full alarm disturbance. Prepare a drain hose. Connect it to the drain port at the middle of the unit and drain water into a bucket or floor drain. The unit can also work well.

• If you plan to leave this unit unused for a long time, please use both of the drain ports to drain out the water.
• If the condensed water accumulates fast and leads to water full alarms shortly, the splash motor inside the machine may be damaged. In this case, please contact our service department at www.emerio.eu/service

CLEANING AND MAINTENANCE

• Before cleaning, be sure to disconnect the appliance from any electric supply outlet.
• Do not use gasoline or other chemicals to clean the appliance.
• Do not wash the appliance directly.

Air Filter

If the air filter becomes clogged with dust/dirt, the air filter should be cleaned once every two weeks.

• Pull out the air filter from the bottom to take it off the appliance.
• Clean the air filter with neutral detergent in lukewarm water (40℃) and dry it up in the shade.
• Insert the air filter back.

Clean the Surface

• First, clean the surface with a neutral detergent and wet cloth, and then wipe it with a dry cloth.

TROUBLESHOOTING

dump the water out from the drainage outlet.
Room temperature is lower than the setting temperature.| Reset the temperature.

Not cool enough

| The doors or windows are not closed.| Make sure all the windows and doors are closed.
There are heat sources inside the room.| Remove the heat sources if possible.
The hot air exhaust hose is not connected or blocked.| Connect or clean the hot air exhaust hose.
Temperature setting is too high.| Reset the temperature.
Air inlet is blocked.| Clean the air inlet.

Noisy

| The ground is not level or not flat

enough.

| Place the appliance on a flat, level

surface if possible.

The sound comes from the flowing of

the refrigerant inside the appliance.

| It is normal.

E0 Code

| ****

Room temperature sensor failed.

| Replace the room temperature sensor. Contact authorized service technician

for repair.

---|---|---

E1 Code

| ****

Condenser temperature sensor failed.

| Replace condenser temperature sensor. Contact authorized service technician

for repair.

E2 Code| Water tray full when cooling.| Take off the rubber stopper and empty

the water.

E3 Code

| ****

Evaporator temperature sensor failed.

| Replace evaporator temperature sensor.

Contact authorized service technician for repair.

Appliance stops cooling after a running cycle of 50 minutes.| When the ambient room temperature drops to 21⁰C or below for 50 minutes during cooling mode, the appliance will be stopped for 5 minutes by the default

programme.

| No action required. This is to avoid the internal copper cooling pipes from freezing. The appliance will resume again after 5 minutes and this cycling

process will be repeated continuously.

TECHNICAL DATA

Notice: Operation temperature range:

Below data for your operating reference

ERP INFORMATION

• Refrigerant leakage contributes to climate change. Refrigerant with lower global warming potential (GWP) would contribute less to global warming than a refrigerant with higher GWP, if leaked to the atmosphere.
• This appliance contains a refrigerant fluid with a GWP equal to 3. This means that if 1 kg of this refrigerant fluid would be leaked to the atmosphere, the impact on global warming would be 3 times higher than 1 kg of CO2, over a period of 100 years. Never try to interfere with the refrigerant circuit yourself or disassemble the product yourself and always ask a professional.
• Energy consumption 1.345 kWh for model PAC-127068.2 in 60 minutes of use under standard test conditions. The actual energy consumption depends on how the device is used and where it is located.

For any additional information, please contact:

• Emerio Switzerland AG
• Oberneuhofstrasse 1
• 6340 Baar Switzerland

GUARANTEE AND CUSTOMER SERVICE

Before delivery our devices are subjected to rigorous quality control. If, despite all care, damage has occurred during production or transportation, please return the device to your dealer. In addition to statutory legal rights, the purchaser has an option to claim under the terms of the following guarantee: For the purchased device we provide 2 years guarantee, commencing from the day of sale. If you have a defective product, you can directly go back to the point of purchase.

Defects which arise due to improper handling of the device and malfunctions due to interventions and repairs by third parties or the fitting of non- original parts are not covered by this guarantee. Always keep your receipt, without the receipt you can’t claim any form of warranty. Damage caused by not following the instruction manual, will lead to a void of warranty, if this results in consequential damages then we will not be liable. Neither can we hold responsible for material damage or personal injury caused by improper use if the instruction manual is not properly executed. Damage to accessories does not mean free replacement of the whole appliance. In such case please contact our service department. Broken glass or breakage of plastic parts is always subject to a charge. Defects to consumables or parts subjected to wearing, as well as cleaning, maintenance, replacement of said parts or shipping and transportation costs to and from any place of repair are not covered by the warranty and are to be paid.

ENVIRONMENT-FRIENDLY DISPOSAL

Recycling:  European Directive 2012/19/EU

This marking indicates that this product should not be disposed with other household wastes. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased. They can take this product for environmentally safe recycling.

BATTERY MUST BE RECYCLED OR DISPOSED OF PROPERLY. DO NOT OPEN. DO NOT DISPOSE OR IN FIRE OR SHORT CIRCUIT.

• Emerio Switzerland AG
• Oberneuhofstrasse 1 6340 Baar Switzerland

INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R290

Servicing

Checks to the area

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

All 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 flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.

Presence of fire extinguisher

If 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 that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to 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.

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 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 department for 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;
• 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. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If 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. Initial safety checks shall include:

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

1. 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. If 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.
2. 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 original specification, damage to seals, incorrect fitting of glands, etc.

Ensure that apparatus is mounted securely. Ensure that seals or sealing materials have not degraded such 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 may inhibit the effectiveness of some types of leak detection equipment. Intrinsically 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. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test apparatus shall be at 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 systems containing flammable refrigerants. Electronic leak detectors shall be used to detect flammable refrigerants, but 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) isconfirmed. Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine 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. 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, 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. 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 this task. 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 there is ventilation 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 OFN. 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. It 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. It is essential that electrical power is available before the task is commenced.

• Become familiar with the equipment and its operation.
• Isolate system electrically.
• 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.
• Pump down refrigerant system, if possible.
• If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
• Make sure that cylinder is situated on the scales before recovery takes place.
• Start the recovery machine and operate in accordance with manufacturer’s instructions.
• Do not overfill cylinders. (No more than 80 % volume liquid charge).
• Do not exceed the maximum working pressure of the cylinder, even temporarily.
• When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
• 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. 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 is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant). Cylinders shallbe complete with pressure relief valve and associated shut-off valves in good working order. 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 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. If 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.

Competence of service personnel

General

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 teach the relevant national competency standards that may be set in legislation. The achieved competence should be documented by a certificate.

Training

The training should include the substance of the following: Information about the explosion potential of flammable refrigerants to show that flammables may be dangerous when handled without care. Information about potential ignition sources, especially those that are not obvious, such as lighters, light switches, vacuum cleaners, electric heaters.

Information about the different safety concepts:

• Unventilated:  Safety of the appliance does not depend on ventilation of the housing. Switching off the appliance or opening of the housing has no significant effect on the safety. Nevertheless, it is possible that leaking refrigerant may accumulate inside the enclosure and flammable atmosphere will be released when the enclosure is opened.
• Ventilated enclosure:  Safety of the appliance depends on ventilation of the housing. Switching off the appliance or opening of the enclosure has a significant effect on the safety. Care should be taken to ensure a sufficient ventilation before.
• Ventilated room:  Safety of the appliance depends on the ventilation of the room. Switching off the appliance or opening of the housing has no significant effect on the safety. The ventilation of the room shall not be switched off during repair procedures.

Information about the concept of sealed components and sealed enclosures according to IEC 60079-15:2010.

Information about the correct working procedures:

• Commissioning
  • Ensure that the floor area is sufficient for the refrigerant charge or that the ventilation hose is assembled in a correct manner.
  • Connect the pipes and carry out a leak test before charging with refrigerant.
  • Check safety equipment before putting into service.
• Maintenance
  • Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with flammable refrigerants.
  • Ensure sufficient ventilation at the repair place.
  • Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible.
  • Discharge capacitors in a way that won’t cause any spark. The standard procedure to short circuit the capacitor terminals usually creates sparks.
  • Reassemble sealed enclosures accurately. If seals are worn, replace them.
  • Check safety equipment before putting into service.
• Repair
  • Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with flammable refrigerants.
  • Ensure sufficient ventilation at the repair place.
  • Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible.
  • Discharge capacitors in a way that won’t cause any spark.
  • When brazing is required, the following procedures shall be carried out in the right order:
  • Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building.
  • Evacuate the refrigerant circuit.
  • Purge the refrigerant circuit with nitrogen for 5 min.
  • Evacuate again.
  • Remove parts to be replaced by cutting, not by flame.
  • Purge the braze point with nitrogen during the brazing procedure.
  • Carry out a leak test before charging with refrigerant.
  • Reassemble sealed enclosures accurately. If seals are worn, replace them.
  • Check safety equipment before putting into service.
• Decommissioning
  • If the safety is affected when the equipment is putted out of service, the refrigerant charge shall be removed before decommissioning.
  • Ensure sufficient ventilation at the equipment location.
  • Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible.
  • Discharge capacitors in a way that won’t cause any spark.
  • Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building.
  • Evacuate the refrigerant circuit.
  • Purge the refrigerant circuit with nitrogen for 5 min.
  • Evacuate again.
  • Fill with nitrogen up to atmospheric pressure.
  • Put a label on the equipment that the refrigerant is removed.
• Disposal
  • Ensure sufficient ventilation at the working place.
  • Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building.
  • Evacuate the refrigerant circuit.
  • Purge the refrigerant circuit with nitrogen for 5 min.
  • Evacuate again.
  • Cut out the compressor and drain the oil.

Transportation, marking and storage for units that employ flammable

refrigerants

Transport of equipment containing flammable refrigerants

Attention is drawn to the fact that additional transportation regulations may exist with respect to equipment containing flammable gas. The maximum number of pieces of equipment or the configuration of the equipment permitted to be transported together will be determined by the applicable transport regulations.

Marking of equipment using signs

• Signs for similar appliances used in a work area generally are addressed by local regulations and give the minimum requirements for the provision of safety and/or health signs for a work location.
• All required signs are to be maintained and employers should ensure that employees receive suitable and sufficient instruction and training on the meaning of appropriate safety signs and the actions that need to be taken in connection with these signs.
• The effectiveness of signs should not be diminished by too many signs being placed together.
• Any pictograms used should be as simple as possible and contain only essential details.
• Disposal of equipment using flammable refrigerants See national regulations.

Storage of equipment/appliances

• The storage of equipment should be in accordance with the manufacturer’s instructions.

Storage of packed (unsold) equipment

• Storage package protection should be constructed such that mechanical damage to the equipment inside the package will not cause a leak of the refrigerant charge.
• The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.

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