Section 4 – SR-2 Operation
Gauges Available
Coolant Temperature – Displays the temperature of the engine coolant.
Coolant Level – Displays the coolant level in the overflow tank.
Engine Oil Pressure – Displays the engine oil pressure as OK or LOW.
Amps – Displays the current flow in amps flowing to or from the unit battery
Battery Voltage – Displays the voltage of the unit battery.
Engine RPM – Displays the engine speed in RPMs.
Discharge Pressure – Displays the unit discharge pressure. (ETV units only)
Suction Pressure – Displays the unit suction pressure. (ETV units only)
ETV Position – Displays the current position of the ETV valve. (ETV units only)
I/O (Input/Output State)– Displays the current state of the input/output devices listed below.
• High Speed Relay/Electric Heat
• Run Relay
• Defrost Damper
• Heat Output
• Diesel/Electric Relay (Model 50 units only)
• Electric overload (Model 50 units only)
• Hot Gas Bypass (ETV units only)
4-18
31 January 2005
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