G3408C, G3412C, G3508, G3512 and G3516 Gas Engine Driven Chillers Caterpillar

Frequency Transmitter

Illustration 1	g00560393
115-7954 Frequency Transmitter (1) Adjustment Screws. (2) Output Terminals. (3) Input Terminals.

The Frequency Transmitter is located in the Control Panel (Engine). Output Terminal "S" and Input Terminal "L" do not have connections. Output Terminal "S" can be used in order to check the output signal. Connect a voltmeter between output terminal "S" and the "+" output terminal. The voltmeter should read a value that is between 40 mV and 200 mV.

Temperature Transmitter

Illustration 2	g00560580
139-8405 Temperature Transmitter (1) Adjustment Screws. (2) Output Terminals. (3) Input Terminals.

The Temperature Transmitter is located in the Control Panel (Engine). Output Terminal "S" and Input Terminal "L" do not have connections. Output Terminal "S" can be used in order to check the output signal. Connect a voltmeter between output terminal "S" and the "+" output terminal. The voltmeter should read a value that is between 40 mV and 200 mV.

Pressure Transmitter

Illustration 3	g00560622
Pressure Transmitter

123-8273 Pressure Transmitter

Operating Range ... 0 to 1000 kPa (0 to 145 psi)

Supply Voltage ... 24 VDC

Output Signal ... 4 to 20 mA

144-7487 Pressure Transmitter

Operating Range ... -100 to 500 kPa (-14.5 to 72.5 psi)

Supply Voltage ... 24 VDC

Output Signal ... 4 to 20 mA