Trane Series R™ Helical Rotary Chiller RTAC300H

Warning: This procedure requires trained personnel with PPE!

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

Is the oil line shut off valve open?

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

Choose the method of oil charging

Sign off on the oil charging procedure

CAUTION: Evaporator Damage! Water must be flowing through the evaporator during the entire charging process to avoid freezing and rupturing of the evaporator tubes. Charge first with vapor to avoid freezing tubes.

Weight of the amount of charge removed

Does the weight of the charge removed match with the values in Table 1 - Table 4?

If there is a difference in charge, it may indicate a leak.

Is the charging hose attached to the evaporator service valve (3/8” (9mm) flare)?

Amount of charge added to the evaporator

Is the total circuit charge up to the level indicated in the chart?

Is the service valve closed and charging hose disconnected?

Proper oil and refrigerant charge is essential for proper unit operation, unit perfor-mance, and environmental protection. Only trained and licensed service personnal should service the chiller.

Some symptoms of a refrigerant under-charged unit:

• Higher than normal discharge superheat

• Larger than normal evaporator approach temperatures (leaving water temperature - saturated evaporator temperature)

• Low evaporator refrigerant temperature limit

• Low refrigerant temperature cutout diagnostic

Warning: This procedure requires trained personnel with PPE!

Use the initial charging procedure under the following circumstances:

NOTE: This procedure can be followed even with the refrigerant charge isolated in the evaporating section of the unit.

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:

If the compressor is 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 com¬pressor into the chiller.

Compressor installed in the system?

Make sure that the filter shut off valve is closed. Other compressor isolation valves may also be closed depending upon the service that was completed.

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

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