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CONTROL AR- 5088955 - Caterpillar

5088955 CONTROL AR- Caterpillar parts CONTROL
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Caterpillar 5088955 CONTROL AR-

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Personal injury can result from contact with refrigerant.This system is under pressure at all times, even if the engine is not running. Heat should never be applied to a charged system.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 caution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, evacuate the system recovering the refrigerant before removing the fitting.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.Before any checks of the air conditioning and heating system are made, move the machine to a smooth horizontal surface. Lower all implements to the ground. Make sure the transmission is in neutral or park and that the parking brake is engaged. Keep all other personnel away from the machine or where they can be seen.
Personal injury can result from hot coolant. Any contact with hot coolant or with steam can cause severe burns. Allow cooling system components to cool before the cooling system is drained.
Never weld or solder any charged components.
A visual inspection is essential before conducting any performance tests or before conducting any service to the air conditioning system or to the heating system.
Inspect and clean the fresh air filter.
Inspect and clean the recirculation air filter.
Inspect the condenser and the evaporator.
Check for any type of restriction that will obstruct the air flow. Check for dirt, insects, plastic bags, etc.
For machines that are equipped with condensers that are mounted on the roof, always make sure that both fan motors are running. Check for restrictions.
Check for a loose belt on the compressor.
If there is a moisture indicator on either the receiver-dryer or the in-line dryer, check the indicator.
If the moisture indicator is blue, the system is normal.
If the indicator is pink or white, there is moisture in the system. Replace the receiver-dryer or the in-line dryer. Note: Refer to Disassembly and Assembly, SENR5664, "Refrigerant Receiver-Dryer - Remove and Install" for instructions on replacing the receiver-dryer.Note: Refer to Disassembly and Assembly, SENR5664, "In-Line Refrigerant Dryer - Remove and Install" for instructions on replacing the in-line dryer.
Inspect the condensate drain tube on the evaporator. The drain plug should not be obstructed.
Inspect refrigerant lines and hoses for damage from excessive heat or rubbing. Check for oily surfaces along hose and coupling connections. This can be an indication of a refrigerant leak. Refer to Testing and Adjusting, SENR5664, "Refrigerant Leakage – Test".

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