Trane Series R™ Helical Rotary Chiller RTHCD1D1E1

Warning: This procedure should be performed by trained personnel only.

Is the gas pump returning the oil to the compressor?

Enter the liquid level reading from the sensor

Enter the suction pressure reading

Enter the evaporator approach reading

Refer to Figure 34 to determine if the pressure drop across the filter is above the normal range at full load conditions.

Is the pressure drop across the filter above the normal range?

If the oil is logged in the evaporator, it may be necessary to manually move the oil from the evaporator to the oil sump to avoid loss of oil in the main oil lines.

Upload a photo of the oil sump after moving the oil

Warning: Disconnect ALL power before/during evacuation.

Cause of lost refrigerant determined and problem repaired?

Vacuum pump connected to the 5/8” flare connection on the bottom of the evaporator and/or condenser?

Enter the system pressure in microns after evacuation

Perform a standing rise test for at least an hour.

Enter the pressure rise in microns after the standing rise test

Pressure rise less than 150 microns?

CAUTION: Due to the hygroscopic properties of the POE oil, all oil must be stored in metal containers. The oil will absorb water if stored in a plastic container.

Is the service valve located on the bottom of the oil sump open?

Connect a line to the oil sump drain valve.

Is the line connected to the oil sump drain valve?

Open the valve and allow the desired amount of oil to flow into the container and close the charging valve.

Is the valve open and oil flowing into the container?

Measure the exact amount of oil removed from the unit.

Sign off on the compressor oil replacement

WARNING: Hazardous Voltage! Disconnect all electrical power, including remote disconnects before servicing. Failure to disconnect power before servicing can cause severe personal injury or death.

Perform all weekly and monthly maintenance procedures.

Check the refrigerant charge and oil level.

Routine oil changing is not necessary on a hermetic system.

Have a qualified laboratory perform an oil analysis to determine system moisture content and acid level.

IMPORTANT: Due to the hygroscopic properties of the POE oil, all oil must be stored in metal containers. The oil will absorb water if stored in a plastic container.

Check the pressure drop across the oil filter.

Contact a qualified service organization to leak check the chiller, to inspect safety controls, and inspect electrical components for deficiencies.

Inspect all piping components for leakage and damage.

CAUTION: Do not use untreated or improperly treated water, or equipment damage may occur.

Condenser tube fouling is indicated when the “approach” temperature is higher than predicted.

If the approach exceeds 10°F cleaning the condenser tubes is recommended.

Remove the retaining bolts from the water boxes at each end of the condenser.

Use a hoist to lift the water boxes.

Work a round nylon- or brass- bristled brush in and out of each of the condenser water tubes to loosen the sludge.