Trane Series R™ Helical Rotary Chiller RTWD120STD

Warning: This procedure requires trained personnel with PPE!

Run the unit fully unloaded for approximately 20 minutes.

Attach a 3/8 inch or 1/2 inch hose with a sight glass in the middle to the oil sump service valve (1/4 inch flare) and the oil separator service valve (1/4 inch flare).

Note: Using high pressure rated clear hose with appropriate fittings can help speed up the process.

After the unit is off line for 30 minutes, move the sight glass along the side of the oil sump.

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

Note: If oil levels are not between 3 inch and 5 inch, contact Trane service.

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

Clean all water strainers in both the chilled and condensing water piping systems

See “Refrigerant and Oil Charge Management,” p. 65. If chiller measurements vary significantly from values listed in Table 23, p. 65 and Table 24, p. 65, problems may exist with refrigerant and oil charge levels.

Contact local Trane service if measurements vary significantly

Sign off on the monthly maintenance

Once service is complete, the waterbox/ cover should be reinstalled following all previous procedures in reverse.

Are new o-rings or gaskets used on all joints after thoroughly cleaning each joint?

Contact local Trane parts center for information.

Are waterbox/cover bolts torqued?

Note: Torque bolts in a star pattern. See the table below for torque values.

Sign off on the chiller reassembly

Warning: This procedure requires trained personnel with PPE!

Name of the water treatment specialist consulted

Materials used in the external circulation system

Duration of the cleaning period

Safety precautions approved by the company?

Note: Chemical tube cleaning should always be followed by mechanical tube cleaning.

Sign off on the chemical cleaning

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 a complete examination of the unit conducted?

Describe the condition of the compressor and internal components

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