Trane Series R™ Helical Rotary Chiller RTHCE3D2E2

After the unit has operated for approximately 30 minutes and the system has stabilized, check the operating conditions and complete the procedures below:

Check evaporator and condenser pressures with gauges and compare to the reading on the Clear Language Display.

Pressure readings should fall within the following ranges specified in the Operating Conditions table:

NOTE: Optimum condenser pressure is dependent on condenser water temperature, and should equal the saturation pressure of the refrigerant at a temperature 2 to 5°F above that of leaving condenser water at full load.

Sign off on the weekly maintenance of the Series R™ Helical Rotary Chiller.

Run the unit fully loaded for approximately 20 minutes.

Attach the 3/8” or 1/2” hose with a sightglass in the middle to the oil sump drain valve and the condenser service valve at the top of the condenser.

After the unit is off line for 10 minutes move the sightglass along the edge of the condenser tubesheet at the same height of the oil sump.

Enter the oil level from the bottom of the oil sump.

If the level is below 2”, there is not enough oil in the sump. This can occur from not enough oil in the system or more likely, oil migration to the evaporator. Oil migration can occur from a low refrigerant charge, gas pump malfunction, etc.

After the level is determined, close the service valves and remove the hose/sightglass assembly.

Sign off on the oil sump level check.

Locate the 1/4” schrader valve between the ball valve and oil filter (or the ball valve and oil cooler, if so equipped).

Loosely connect oil pump to schrader valve.

Operate oil charging pump until oil appears at the charging valve connection; then tighten the connection.

Close the ball valve just upstream of the schrader valve connected to the oil pump.

At the UCP2 display panel, press <Service Tests> and enter the password (++--++) followed by <Enter>).

Press <enter> to access the service tools group.

Press <next> 12 times to display “Master Oil Line Solenoid Valve: [Mode]”.

Press ‘+’ to change the mode from “Auto” to “On”.

This will energize the solenoid to allow the oil to travel from the schrader to the compressor.

Use a nondestructive tube test to inspect the condenser and evaporator tubes at 3-year intervals.

NOTE: It may be desirable to perform tube tests on these components at more frequent intervals, depending upon chiller application. This is especially true of critical process equipment.

Depending on chiller duty, contact a qualified service organization to determine when to conduct a complete examination of the unit to determine the condition of the compressor and internal components.

Nondestructive tube test passed?

Describe any issues found during the tube test

Was the test performed at more frequent intervals?

Describe the condition of the compressor and internal components

Sign off on the 3 Yearly Series R™ Helical Rotary Chiller Maintenance

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 valve open and allowing the desired amount of oil to flow into the container?

Measure the exact amount of oil removed from the unit.

Sign off on the compressor oil replacement