Trenton Refrigeration Products Condensing Unit TEHA013M8

Confirm that a qualified refrigeration mechanic is present for the start-up

Check that all electrical and refrigeration connections are tight

Enter the compressor crankcase oil level (if equipped with sight glass)

Are compressor shipping spacers or hold down nuts properly in place?

Check that the compressor discharge and suction shut-off valves are open

Ensure all pressure controls and safety controls are adjusted properly

Is the room thermostat set for normal operation?

Ensure a qualified refrigeration mechanic is present

Verify all installations are complete

Start the compressor and observe its performance

Monitor the performance of moving components

Is the compressor operating within expected parameters?

Are all moving components functioning correctly?

Select the method to measure suction pressure

Enter the suction pressure at the bulb location

Measure and enter the temperature of the suction line at the thermostatic expansion valve bulb location

Saturated Temperature Conversion

Convert the suction pressure to saturated evaporator temperature using a Pressure-Temperature chart and enter the value

Calculate and enter the actual superheat at the evaporator by subtracting the saturated temperature from the actual suction line temperature

Enter the compressor discharge pressure

Enter the compressor suction pressure

Are the pressures within the allowable design limits?

Check the liquid line sight glass and expansion valve operation

Is there an indication that the system is low on refrigerant?

Check the system for leaks before adding refrigerant

Compressor Suction Superheat Measurement

Measure the suction pressure at the suction service valve of the compressor

Determine the saturated temperature corresponding to the measured pressure

Measure the suction temperature of the suction line 6 inches back from the compressor suction valve

Calculate the actual superheat at the compressor

Is the suction superheat within the range of 20 to 45 °F (11.2 to 25.2 °C)?

Describe any adjustments made to the suction superheat