Trane Series R™ Helical Rotary Chiller RTAC275S

Inspect individual pieces for obvious damage

Inspect 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.

Notify the Trane sales representative and arrange for repair.

Do not repair the unit until damage is inspected by the carrier’s representative.

Sign off on the inspection checklist

Warning: This procedure requires trained personnel with PPE!

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

If the isolation valves is closed, then the charge may be trapped in the evaporator. In either case, the high side of the system should not be pressurized.

Is the oil line shut off valve open?

The oil charging port is a ¼” (6mm) flare fitting with a schrader valve that is on the side of the oil filter housing.

Is the oil charging port used to add oil into the compressor?

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.

Sign off on the oil charging procedure

Warning: Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.

Perform all weekly and monthly procedures.

Check oil sump oil level while unit is off.

NOTE: Routine changing of the oil is not required. Use an oil analysis to determine the condition of the oil.

Have a qualified laboratory perform a compressor oil analysis to determine system moisture content and acid level.

Contact a qualified service organization to leak test the chiller, to check operating and safety controls, and to inspect electrical components for deficiencies.

Inspect all piping components for leakage and damage. Clean out any inline strainers.

Clean and repaint any areas that show signs of corrosion.

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.;

Suction line isolation valve is closed

Oil return line service valve is closed

Liquid line service valve is closed

Refrigerant moved from the condenser to evaporator using a liquid pump or vacuum pump

NOTE: If a pump is to be used, connect it before closing this valve. This port is only isolated when the valve is back seated. If a vacuum pump is used, then connect it to the discharge line service valve near the oil separator.

Evaporator is large enough to hold all the charge for any unit to below the center-line of the shell

Sign off on the Low Side Charge Isolation procedure