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Personal injury can result from contact with refrigerant. Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury. Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant. Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area. Personal injury or death can result from inhaling refrigerant through a lit cigarette. Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death. Do not smoke when servicing air conditioners or wherever refrigerant gas may be present. Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system. |
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If the refrigerant system has been open to the outside air (without being plugged) for more than 30 minutes, the receiver-dryer must be replaced. Moisture will enter an open refrigerant system and cause corrosion which will lead to component failure. |
The refrigerant accumulator is behind the access door for the oil cooler.
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| Illustration 1 | g00448049 |
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This is an example of a receiver-dryer that does not have quick disconnects. | |
Refer to Service Manual, SENR5664, "Air Conditioning and Heating with R-134a All AVSpare Machines", "Refrigerant Accumulator - Remove and Install" for the replacement procedure of the refrigerant dryer.
The refrigerant dryer is behind the access door for the engine.
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| Illustration 2 | g01061654 |
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This is an example of a receiver-dryer that has quick disconnects. | |
Refer to Service Manual, SENR5664, "Air Conditioning and Heating with R-134a All AVSpare Machines", "In-Line Refrigerant Dryer - Remove and Install" for the replacement procedure of the refrigerant dryer.
Note: When you operate the machine in a climate with high humidity, replace the refrigerant accumulator after every 1000 service hours or 6 months.