Trane Series R™ Helical Rotary Chiller RTAC250S

Attach vacuum hoses to evaporator service valves (one per circuit)

Attach charging hoses to the charging port on the liquid line filter (one per circuit)

Begin semi-automatic vacuum procedure

When vacuum is complete (indicated), manually isolate the unit from vacuum

Charge unit through the filter housing port per Table 1 - Table 4

When charging is complete, shut evaporator service valve

Disconnect vacuum and charging hoses

Inspect the individual pieces of the shipment for obvious damage

Inspect the unit for concealed damage

If concealed damage is discovered, stop unpacking the shipment.

Provide evidence that the damage did not occur after delivery

Notify the carrier’s terminal of the damage immediately, by phone and by mail.

Enter the details of the carrier notified

Notify the Trane sales representative and arrange for repair.

Enter the details of the Trane sales representative notified

Specific connection and schematic wiring diagrams are shipped with the unit. Some piping and control schemes, particularly those using a single water pump for both chilled and hot water, must be analyzed to determine how and or if a flow sensing device will provide desired operation.

Follow the manufacturer’s recommendations for selection and installation procedures. General guidelines for flow switch installation are outlined below.

1. Mount the switch upright, with a minimum of 5 pipe diameters of straight hori-zontal run on each side. Do not install close to elbows, orifices or valves.

NOTE: The arrow on the switch must point in the direction of flow.

2. To prevent switch fluttering, remove all air from the water system.

NOTE: The CH530 provides a 6-second time delay after a “loss-of-flow” diagnostic before shutting the unit down. Contact a qualified service representative if nuisance machine shutdowns persist.

3. Adjust the switch to open when water flow falls below the minimum flow rate. Evaporator data is given in the General Information section. Flow switch contacts are closed on proof of water flow.

4. Install a pipe strainer in the entering evaporator water line to protect components from waterborne debris.;

Liquid line service valve is shut

Oil return line service valve is shut

Circuit started with the service tool (access compressor service view in Techview)

Discharge check valve closed after unit trip

Discharge isolation valve is closed

Oil line shut off valve is closed

Refrigerant remainder recovered

NOTE: Remaining vapor can be recovered/stored in the high side of the system. Be certain to follow proper recovery procedures to avoid introduction of non-condensable gases.

Warning: This procedure requires trained personnel with PPE!

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

Liquid line isolation valve is closed?

Ball valve on oil cooler liquid line is closed?

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

Refrigerant from liquid line evacuated and stored?