Trane CenTraVac™ Water-Cooled Chiller CVHF - 190-320 - 231 - 050S / 050L

Compare the readings with the values provided in the general maintenance

Check the oil level in the chiller oil sump using the two sight glasses provided in the oil sump head. When the unit is operating, the oil level should be visible in the lower sight glass

Review the purge Installation, Operation, and Maintenance manual and follow maintenance and/or inspection items identified

Review overall operation of purge and service as necessary

Sign off on the purge unit inspection

NOTICE: Equipment Damage! Mixing refrigerants or oils could result in equipment damage including bearing damage, introduction of acids into the chiller, or continuous purge pump-out in high-head/high ambient applications

CenTraVac chillers are manufactured with different refrigerant/oil systems: 1) chillers using R-123 refrigerant and OIL00022 compressor oil, and 2) chillers using R-514A refrigerant and OIL00334/OIL00335 compressor oil

Verify proper refrigerant and oil for your chiller and do NOT mix refrigerants or oils!

Important: Verify proper refrigerant and compressor oil for your chiller before proceeding!

After the first six months of accumulated operation or after 1000 hours operation—whichever comes first—it is recommended to change the oil and filter

After this oil change, it is recommended to subscribe to the Trane annual oil analysis program rather than automatically change the oil as part of scheduled maintenance

Change the oil only if indicated by the oil analysis. Using an oil analysis program will reduce the chiller’s overall lifetime waste oil generation and minimize refrigerant emissions. The analysis determines system moisture content, acid level, and wear metal content of the oil, and can be used as a diagnostic tool. The oil analysis should be performed by a qualified laboratory that is experienced in refrigerant and oil chemistry and in the servicing of Trane® centrifugal chillers

In conjunction with other diagnostics performed by a qualified service technician, oil analyses can provide valuable information on the performance of the chiller to help minimize operating and maintenance costs and maximize its operating life. A valve is installed next to the oil filter for the purpose of obtaining oil samples

Notes: • Use only Trane compressor oil and verify proper refrigerant and oil for your chiller before proceeding! A full oil change is 9 gallons (34.1 L) of oil

Is the evaporator part of a closed circuit?

If the evaporator is part of a closed circuit, it may not accumulate appreciable amounts of scale or sludge.

Normally, cleaning every three years is sufficient.

Is the evaporator part of an open system, such as air washers?

If yes, periodic inspection and cleaning is recommended.

Sign off on the evaporator maintenance

Inspect for fouling and scaling in tubes

Check operation of evaporator water flow sensing device

Factory recommendation to eddy current test tubes every three years

Sign off on the evaporator inspection