Trane Series R™ Helical Rotary Chiller RTHCC1B2C1

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

Is the 'approach' temperature higher than predicted?

If the approach exceeds 10°F, cleaning the condenser tubes is recommended.

Remove the retaining bolts from the water boxes at each end of the condenser.

Use a hoist to lift the water boxes.

Work a round nylon- or brass- bristled brush (attached to a rod) in and out of each of the condenser water tubes to loosen the sludge.

Thoroughly flush the condenser water tubes with clean water.

Warning: This procedure should be performed by trained personnel only.

Gas pump able to return oil to compressor?

If gas pump is unable to return oil, proceed with filter replacement.

Enter the pressure drop across the filter at full load conditions.

Is the pressure drop within the normal range?

If pressure drop is not within the normal range, replace the filter.

Is the evaporator logged with oil?

If evaporator is logged with oil, manually move the oil from the evaporator to the oil sump.

Sign off on the gas pump oil filter replacement.

Warning: This procedure requires trained personnel with PPE!

Chiller shut down on a 'Low Oil Flow' diagnostic?

Compressor shut down on a 'Loss of Oil at Compressor (Running)' diagnostic?

Pressure drop between the two service valves in the lubrication circuit

If pressure drop exceeds the maximum level, proceed with the following steps

Isolate the oil filter by closing the two ball valves located before and after the filter

Relieve the pressure from the hydraulic line through the 1/4” schrader valve located between the ball valve and the oil filter (or the ball valve and oil cooler, if so equipped)

Use a rubber mallet to break loose the nut that secures the oil filter element to the filter manifold

Turn the nut clockwise until the filter element detaches from the manifold

Run the unit fully loaded for approximately 20 minutes.

Attach the 3/8” or 1/2” hose with a sightglass in the middle to the oil sump drain valve and the condenser service valve at the top of the condenser.

After the unit is off line for 10 minutes move the sightglass along the edge of the condenser tubesheet at the same height of the oil sump.

Enter the oil level from the bottom of the oil sump.

If the level is below 2”, there is not enough oil in the sump. This can occur from not enough oil in the system or more likely, oil migration to the evaporator. Oil migration can occur from a low refrigerant charge, gas pump malfunction, etc.

After the level is determined, close the service valves and remove the hose/sightglass assembly.

Sign off on the oil sump level check.

WARNING: Hazardous Voltage! Disconnect all electrical power, including remote disconnects before servicing. Failure to disconnect power before servicing can cause severe personal injury or death.

Perform all weekly and monthly maintenance procedures.

Check the refrigerant charge and oil level.

Routine oil changing is not necessary on a hermetic system.

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

IMPORTANT: Due to the hygroscopic properties of the POE oil, all oil must be stored in metal containers. The oil will absorb water if stored in a plastic container.

Check the pressure drop across the oil filter.

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

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