PLATFORM AS 1632197 - Caterpillar

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.
When adding or replacing refrigerant, use only refrigerant recommended by Caterpillar. System damage can result.
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Start the engine and turn the engine speed dial to the MEDIUM SPEED position.
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Open the access door on the left side of the machine.
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Look at the receiver-dryer sight glass and note the amount of refrigerant.
In sight glass (A), only a few bubbles are present. This indicates that there is a satisfactory amount of refrigerant.
In sight glass (B), many bubbles are present. This indicates that there is a lack of refrigerant.
In sight glass (C), small amounts of vapor are present. This indicates that there is almost no refrigerant.If the condition in sight glass (B) or in sight glass (C) is noticed, consult your authorized Caterpillar dealer for recharging.Operation of the air conditioner without correct amounts of refrigerant could cause failure of the compressor.The air conditioner should be kept ready for operation year-round. Operate the air conditioner for a few minutes during the week in order to rotate the compressor. This prevents the leakage of refrigerant. The leakage is caused by a dry seal on the compressor.
Close the access door.