CYLINDER GP-BOOM 1838910 - Caterpillar

Probable Cause
The condenser is not functioning properly.Note: The system may have a normal or overcharge of refrigerant.
Check for a blockage in the flow of air through the condenser.
If a blockage is found in the condenser, remove all blockages and perform a performance check. The performance check will ensure proper system operation. Refer to "Performance Checks for the Air Conditioning System" section.
If the problem still exists, perform the following procedure. Check the system for an overcharge of refrigerant.Note: Do not operate the engine.
Recover the refrigerant. Refer to the Service Manual, SENR3334, "Refrigerant Recovery" section in Testing and Adjusting.
Evacuate the system. Refer to the Service Manual, SENR3334, "Refrigerant System - Evacuate" section in Testing and Adjusting.
Recharge the system with the correct amount of refrigerant. Measure the refrigerant by weight. Refer to the Service Manual, SENR3334, "Refrigerant System - Charge" section in Testing and Adjusting.Note: With the ambient temperature above 21°C (70°F), the normal gauge reading for the low pressure side is 70 to 138 kPa (10 to 20 psi) while the normal gauge reading for the high pressure side is 820 to 1300 kPa (120 to 190 psi).
In order to ensure the correct systems operation, perform a performance check. Refer to "Performance Checks for the Air Conditioning System" section.
If the low pressure gauge reading and the high pressure gauge readings are too high, perform the following procedure:
Recover the refrigerant from the system. Refer to the Service Manual, SENR3334, "Refrigerant Recovery" section in Testing and Adjusting.
Replace the receiver-dryer or replace the in-line dryer. Refer to the proper Disassembly and Assembly manual for your machine.
If the receiver-dryer or the in-line dryer is not equipped with quick couplers, evacuate the system. Refer to the Service Manual, SENR3334, "Refrigerant System - Evacuate" section in Testing and Adjusting.
Charge the system with the correct amount of refrigerant. Measure the refrigerant by weight. Refer to the Service Manual, SENR3334, "Refrigerant System - Charge" section in Testing and Adjusting.
After the system is charged and operated for a minimum of ten minutes, perform a performance check. Refer to "Performance Checks for the Air Conditioning System" section.System Condition 12
Water is in the vents.
Water is leaking from the unit.Probable Cause
The nonreturn valve of the drain
Check for dirt which may be plugging the drain tube on the evaporator.
Check the nonreturn valve for proper positioning.
Check the nonreturn valve for proper direction.The Compressor will not Engage
If the machine is equipped with the protection system for the refrigerant compressor, Refer to the Service Manual, SENR 3334, "Troubleshooting Heating and Air Conditioning Control Systems" in order to test the on delay timer assembly for the refrigerant compressor.System Condition 13
Low pressure gauge reading is above normal. For normal operating pressures, refer to Table 2.
High pressure gauge reading is below normal. For normal operating pressures, refer to Table 2.Note: Ambient temperature is above 21°C (70°F).
Air flow to the operator's compartment is warm.Probable Cause
The thermostatic switch is stuck open. This does not allow the magnetic clutch to cycle the compressor.
Check the wire connectors on the thermostatic switch and on