Air Conditioning System: Other Kia Rio III

When Handling Refrigerant

1. R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves.
2. It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands. If the refrigerant splashes into your eyes, wash them with clean water immediately.
3. The R-134a container is highly pressurized. Never leave it in a hot place, and check storage temperature is below 52°C (126°F).
4. An electronic leak detector should be used to check the system for refrigerant leakage. Bear in mind that the R-134a, upon coming into contact with flame, produces phosgene, a highly toxic gas.
5. Use only recommended lubricant for R-134a systems. If lubricants other than the recommended one used, system failure may occur.
6. PAG lubricant absorbs moisture from the atmosphere at a rapid rate, therefore the following precautions must be observed: When removing refrigerant components from a vehicle, cap the components immediately to prevent entry of moisture. When installing refrigerant components to a vehicle, do not remove the cap until just before connecting the components. Complete the connection of all refrigerant tubes and hoses without delay to prevent the A/C system from taking on moisture. Use the recommended lubricant from a sealed container only.
7. If an accidental discharge in the system occurs, ventilate the work area before resume of service.

When Replacing Parts On A/C System

1. Never open or loosen a connection before discharging the system.
2. Seal the open fittings of components with a cap or plug immediately to prevent intrusion of moisture or dust.
3. Do not remove the sealing caps from a replacement component until it is ready to be installed.
4. Before connecting an open fitting, always install a new sealing ring. Coat the fitting and seal with refrigerant oil before making the connection.

Flange With Guide Pin

Check the new O-ring for damage (use only the specified) and lubricate by using compressor oil. Tighten the nut to specified torque.

Scheme 30

Handling Tubing And Fittings

The internal parts of the refrigeration system will remain in a state of chemical stability as long as pure moisture-free refrigerant and refrigerant oil are used. Abnormal amounts of dirt, moisture or air can upset the chemical stability and cause problems or serious damage.

The Following Precautions Must Be Observed

1. When it is necessary to open the refrigeration system, have everything you will need to service the system ready so the system will not be left open any longer than necessary.
2. Cap or plug all lines and fittings as soon as they are opened to prevent the entrance of dirt and moisture.
3. All lines and components in parts stock should be capped or sealed until they are ready to be used.
4. Never attempt to rebind formed lines to fit. Use the correct line for the installation you are servicing.
5. All tools, including the refrigerant dispensing manifold, the gauge set manifold and test hoses, should be kept clean and dry.

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The mode selection switch controls the direction of the air flow through the ventilation

AIR OUTLET AND AIR FLOW SYSTEM DESCRIPTION CHART Air Flow Symbol Outlet Description Vent B, D Air flow is directed toward the upper body and face. Additionally, each outlet can be controlled to direct the air discharged from the outlet. Bi-level B, C, D, E Air flow is directed towards the face and the floor. Floor A, C, D, E Most of the air flow is directed to the floor, with a small amount of air directed to the windshield and side window defrosters. Mix A, C, D, E Most of the air flow is directed to the floor and windshield, with a small amount directed to the side window defrosters. Defrost A, D Most of the air flow is directed to the windshield, with a small amount of air directed to the side window defrosters

Scheme 33

Refrigerant Recovery

Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system.

If accidental system discharge occurs, ventilate work area before resume of service

Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.

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Scheme 35

1. Connect an R-134a refrigerant Recovery/Recycling/Charging System (A) to the high-pressure service port (B) and the low-pressure service port (C) as shown, following the equipment manufacturer's instructions.
2. Measure the amount of refrigerant oil removed from the A/C system after the recovery process is completed. Be sure to install the same amount of new refrigerant oil back into the A/C system before charging.

System Evacuation

Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system.

If accidental system discharge occurs, ventilate work area before resume of service.

Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.

Scheme 36

1. When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using an R-134a refrigerant Recovery/Recycling/Charging System. (If the system has been open for several days, the receiver/dryer should be replaced, and the system should be evacuated for several hours.)
2. Connect an R-134a refrigerant Recovery/Recycling/Charging System (A) to the high-pressure service port (B) and the low-pressure service port (C) as shown, following the equipment manufacturer's instructions.
3. If the low-pressure does not reach more than 93.3 kPa (700 mmHg, 27.6 in.Hg) in 10 minutes, there is probably a leak in the system. Partially charge the system, and check for leaks (see " «REFRIGERANT LEAK TEST»(ref-536075-S02808826272013031400000) ".
4. Remove the low pressure valve from the low-pressure service port.

System Charging

Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system.

If accidental system discharge occurs, ventilate work area before resume of service.

Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.

Scheme 37

1. Connect an R-134a refrigerant Recovery/Recycling/Charging System (A) to the high-pressure service port (B) as shown, following the equipment manufacturer's instructions.
2. Add the same amount of new refrigerant oil to system that was removed during recovery. Use only specified refrigerant oil. Charge the system with 420 ± 25g (14.8 ± 0.88 oz.) of R-134a refrigerant. Do not overcharge the system the compressor will be damaged.

Handling of Oil

1. The oil should be free from moisture, dust, metal powder, etc.
2. Do not mix with other oil.
3. The water content in the oil increases when exposed to the air. After use, seal oil from air immediately. (HFC-134a compressor oil absorbs moisture very easily.)
4. The compressor oil must be stored in steel containers, not in plastic containers.

Compressor Oil Check

The oil used to lubricate the compressor is circulating with the refrigerant.

Whenever replacing any component of the system or a large amount of gas leakage occurs, add oil to maintain the original amount of oil.

Oil total volume in system

PAG OIL: 120 ± 10 cc

Variable Swash Plate Compressor

The compressor has a swash plate that rotates to reciprocate pistons, which compress refrigerant.

The variable swash plate compressor controls the swash plate angle to change the refrigerant displacement. It achieves precise cooling capability control in accordance with vehicle interior and driving conditions.

The internally controlled variable swash plate compressor changes the swash plate angle by a MCV (Mechanical Control Valve) in accordance with fluctuation of a suction pressure.

The externally controlled variable swash plate compressor changes the swash plate angle by an ECV (Electric Control Valve) in accordance with an electrical signal from the heater & A/C control unit.

This enables stable temperature control and improved driving feeling.

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1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off.
2. Disconnect the negative cable from the battery.
3. Recover the refrigerant with a recovery/charging station.
4. Remove the RH front tire. (Refer to «TIRE»(ref-536116-S42012849362013031400000) .
5. Remove the engine room RH side under cover. (Refer to " «ENGINE AND TRANSAXLE ASSEMBLY»(ref-536073-S40970354632013031400000) ")
6. Separate the front portion of the front wheel guard (A) from the wheel house.
7. Loosen the drive belt. (Refer to «TIMING CHAIN»(ref-536072-S17453630002013031400000) .
8. Disconnect the suction line (A) and discharge line (B) from the compressor. NOTE: Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
9. Disconnect the compressor switch connector (A).
10. Remove the compressor by loosening the mounting bolts.

Scheme 44

1. Make sure of the length of compressor mounting bolts, and then tighten it with the specified tightening order. Tightening torque: 22~33 N.m (2.04~3.36 kgf.m, 14.8~24.3 lb-ft)
2. Install in the reverse order of removal. If you install a new compressor, drain all the refrigerant oil from the removed compressor and measure its volume. Subtract the volume of drained oil from the original compressor oil capacity (120 cc). The result is the amount of oil you should drain from the new compressor (through the suction fitting) Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the right O-rings for R-134a to avoid leakage. To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refrigerant oils. Immediately after using the oil, replace the cap on the container and seal it to avoid moisture absorption.

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Scheme 46

1. Check the plated parts of the disc & hub assembly (A) for color changes, peeling or other damage. If there is damage, replace the clutch set.
2. Check the pulley (B) bearing play and drag by rotating the pulley by hand. Replace the clutch set with a new one if it is noisy or has excessive play/drag.
3. Check operation of the magnetic clutch. Connect the compressor side terminals to the battery (+) terminal and the ground battery (-) terminal to the compressor body. Check the magnetic clutch operating noise to determine the condition.

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1. Remove the RH front tire. (Refer to «TIRE»(ref-536116-S42012849362013031400000) .
2. Remove the engine room RH side under cover. (Refer to " «ENGINE AND TRANSAXLE ASSEMBLY»(ref-536073-S40970354632013031400000) ")
3. Separate the front portion of the front wheel guard (A) from the wheel house.
4. Loosen the drive belt. (Refer to «TIMING CHAIN»(ref-536072-S17453630002013031400000) .
5. Remove the center bolt (A) and the hub bolts (B) while holding the pulley with a disc & hub assembly bolt remover (09977-25100). Tightening torque: 15~21 N.m (1.5~2.1 kgf.m, 11.1~15.5 lb-ft)
6. Remove the hub assembly (A) and shim (gap washer) (B), taking care not to lose the shim.
7. Remove the pulley (B) after removing the snap ring (A) with snap ring pliers. NOTE: Be careful not to damage the pulley and compressor during disassembly/reassembly. Once snap ring is removed, replace it with a new one.
8. Reassembly is the reverse order of disassembly. NOTE: Clean the pulley and compressor sliding surfaces with non-petroleum solvent. Install new snap ring, and make sure they are fully seated in the groove. Make sure that the pulley turns smoothly after reassembly.