TM 10-5410-228-10
2.15 ENVIRONMENTAL CONTROL UNIT (ECU) INDICATORS.
1.
R22 Refrigerant Sight Glass/Drier
Sight glass reveals shortage of R22 refrigerant. If sight glass is not clear, indicates moisture in
the system.
2.
Air Conditioner Compressor Sight Glass
Used to visually inspect oil level in compressor.
3.
Hydraulic Fluid Level Gage
Used to visually inspect level of fluid in hydraulic reservoir.
4.
High and Low Evaporator Service Ports
Used to service R22 refrigerant system.
5.
High and Low Compressor Service Ports
Used to service R22 refrigerant system.
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