Trane Series R™ Helical Rotary Chiller RTWD140STD

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.

Sign off on the monthly maintenance

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

Condenser tube fouling is indicated when the “approach” temperature (i.e., the difference between the refrigerant condensing temperature and the leaving condenser water temperature) is higher than predicted.

Standard water applications will operate with less than a 10°F approach. If the approach exceeds 10°F cleaning the condenser tubes is recommended.

NOTE: Glycol in the water system typically doubles the standard approach.

If the annual condenser tube inspection indicates that the tubes are fouled, 2 cleaning methods can be used to rid the tubes of contaminants.

WARNING: Heavy Objects! Failure to properly lift waterbox could result in death or serious injury.

WARNING: Straight Vertical Lift Required! Failure to properly lift waterbox in straight vertical lift could cause the eyebolts to break which could result in death or serious injury from object dropping.

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 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.

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

Approved by the company furnishing the materials or performing the cleaning

Followed by mechanical tube cleaning

WARNING: Hazardous Voltage! Failure to disconnect power before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Verify that no power is present with a voltmeter.

Power disconnected and verified with a voltmeter?

Shut down the chiller once each year to check the following:

Sign off on the yearly maintenance