Trenton Refrigeration Products Condensing Unit TEHA006L6

Ensure a qualified refrigeration mechanic is present

Verify all installations are complete

Record initial compressor pressure

Record initial compressor temperature

Is the compressor operating within normal parameters?

First Day Performance Monitoring

Monitor performance of moving components

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

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

Check that all electrical and refrigeration connections are tight

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

Ensure compressor components are properly in place

Check that the compressor valves are open

Ensure all pressure and safety controls are adjusted properly

Is the room thermostat set for normal operation?

Check motors, fans, and pump bearings

Select the method to measure suction pressure

Enter the suction pressure at the bulb location

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

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

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

Is the superheat within the range of 6 to 10 °F (3.4 to 5.6 °C) for systems with a 10 °F (5.6 °C) design TD?

Is the superheat within the range of 12 to 15 °F (6.7 to 8.4 °C) for systems with a higher operating TD?

Compressor Suction Superheat Measurement

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

Measure the suction temperature of the suction line about 6 inches (15 cm) back from the compressor suction valve using an accurate thermometer.

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

Ensure the suction superheat is as low as practical for maximum system capacity.