Trenton Refrigeration Products Condensing Unit TEHA029M6

Verify all connections are secure

Check compressor crankcase oil level (if equipped with sight glass)

Ensure proper installation of compressor components

Verify compressor valves are open

Ensure all pressure and safety controls are adjusted properly

Is the room thermostat set for normal operation?

Disconnect and lock off the main power supply

Check electrical components and tighten any loose connections

Check all wiring and electrical insulators

Check contactors for proper operation and contact point wear

Ensure a qualified refrigeration mechanic is present

Verify all installations are complete

Start the compressor and observe initial performance

Is the compressor operating within expected parameters?

Record compressor pressure readings periodically

Record compressor temperature readings periodically

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?

Describe any refrigerant leaks found

Pressurize the system to a maximum of 150 psig (1136 kPa) with dry nitrogen

Is the system free of major leaks?

Detailed Leak Testing for A1 Refrigerants

Discharge the initial dry nitrogen charge and add refrigerant to raise the system pressure up to 10 psig (170 kPa)

Add dry nitrogen to increase the system pressure to a maximum of 150 psig (1136 kPa)

Use an electronic leak detector to check for leaks

Hold the pressure for a minimum of 12 hours

Is the system leak free after rechecking?