Trane Series R™ Helical Rotary Chiller RTAC350S

Ensure enough space around the outdoor unit for unrestricted access to all service points.

Enter the unit dimensions as per submittal drawings

Is there a minimum of 4 feet (1.2 m) clearance for compressor service?

Is there sufficient clearance for the opening of control panel doors?

Ensure unobstructed flow of condenser air to maintain chiller capacity and operating efficiency.

Is there sufficient flow of air across the condenser heat transfer surface?

Is there any warm air recirculation or coil starvation?

Ensure no debris, trash, supplies etc. accumulate in the vicinity of the unit.

Is the condenser coil free of debris?

Warning: This procedure requires trained personnel with PPE!

Has virtually all of the oil been removed?

Has the oil charge been removed from the compressor and oil system only but the unit has been run for less than 15 minutes?

Has the oil charge been removed from the compressor and oil system only and the unit has been run for more than 15 minutes?

If small quantities of oil were removed to service refrigeration components, such as the evaporator, simply replace the oil that was removed into the serviced component prior to vacuum and recharge of the refrigerant.

If oil was removed from the compressor only to service a compressor or change the oil filter follow this procedure:

Is the compressor a new compressor or has been removed from the system and reworked?

Add 1 quart (2 lb.) oil to the motor cavity prior to installing the compressor into the chiller.

Is the compressor installed in the system?

Isolate the refrigerant charge outside of the compressor and close all four valves leading to the compressor?

Disconnect power to the chiller. Remove the electrical junction box cover and disconnect the wires?

WARNING: Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

Evacuate the compressor through the service fitting provided. If the unit does not have suction service valves, this will include evacuating the low side of the system as well. Disconnect all four lines attached to the compressor, as well as the junction box. Remove three screws from the bottom of the compressor?

Remove the compressor by sliding it out of the chiller onto a well supported skid or other platform. The compressor is very heavy, so insure that the support is sturdy. A piece of 1x4 lumber placed between the isolators works well to support the compressor feet as it is pulled from the chiller?

Install the new compressor. Reinstall all lines, wires, and screws. Open the service valves, and trim charge as required?

Sign off on the compressor replacement

Warning: This procedure requires trained personnel with PPE!

Is the unit new or has had all of the oil removed?

If no, report the issues to the maintenance team and stop the procedure

High side of the system not pressurized?

Choose the method of oil charging

CAUTION: Use only Trane OIL00048 in the RTAC units to avoid any catastrophic damage to the compressor or unit.

Warning: This procedure requires trained personnel with PPE!

Is the temperature downstream of the filter 8°F (4.4°C) lower than the upstream temperature?

Is the unit properly subcooled?

Is the EXV closed with the unit off?

Is the liquid line isolation valve closed?

Is the ball valve on oil cooler liquid line closed on units with remote evaporators or oil cooling circuits?

Attach a photo of the attached hose to service port on liquid line filter flange.

Is the refrigerant from liquid line evacuated and stored?