Trane CenTraVac™ Water-Cooled Chiller CVHF - 1070-1300 - 1062 - 142L / 142L

- Shut down the chiller once each year to check the items of Purge Unit

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

3. Review overall operation of purge and service as necessary;

- For R-123 chillers, perform the annual maintenance procedures referred to in Operation and Maintenance Guide: EarthWise Purge System with Tracer AdaptiView Control for Water-Cooled CenTraVac Chillers with R-123 Refrigerant (PRGF- SVX01*-EN). For R-514A chillers, perform the annual maintenance procedures referred to in Operation and Maintenance Guide: Purge System with Tracer AdaptiView Control for Water-Cooled CenTraVac Chillers with R-514A Refrigerant (PRGG-SVX001*-EN)

- Use an ice water bath to verify the accuracy of the evaporator refrigerant temperature sensor (4R10). If the sensor is exposed to temperature extremes outside its normal operating range (0°F to 90°F [-17.8°C to 32.2°C]), check its accuracy at six-month intervals

- Inspect the condenser tubes for fouling; clean if necessary

- Inspect and clean the ifm efector® flow detection sensors. Use Scotch-Brite® or other non-abrasive material to clean scale; do NOT use steel wool, which could cause the probe to rust

- Submit a sample of the compressor oil to a Trane- qualified laboratory for comprehensive analysis

- Measure the compressor motor winding resistance to ground; a qualified service technician should conduct this check to ensure that the findings are properly interpreted. Contact a qualified service organization to leak-test the chiller; this procedure is especially important if the system requires frequent purging;

- Shut down the chiller once each year to check the items

4. Inspect motor terminal board

5. Check inlet guide vanes (IGV) for abnormalities;

- Lubricate the vane control linkage bearings, ball joints, and pivot points

- Lubricate vane operator tang O- rings

- Lubricate the oil filter shutoff valve O-rings;

- Check chiller for normal operation

1. Condenser pressure is dependent on condenser water temperature, and should equal the saturation pressure of the refrigerant at a temperature above that of leaving condenser water at full load

2. Normal pressure readings for ASME condenser exceed 12 psig (82.7 kPaG)

3. Oil tank pressure: -9 to -6 psig (-62.1 to -41.4 kPaG). Discharge oil pressure: 7 to 15 psig (48.3 to 103.4 KPaG)

4. Approximate Evaporator Pressure: 6 to 9 psia (41.4 to 62.1 kPaA) / -9 to -6 psig (-62.1 to -41.4 kPaG)

5. Approximate Condenser: Pressure(a) , (b) 17 to 27 psia (117.2 to 182.2 kPaA) / 2 to 12 psig (13.8 to 82.7 kPaG) (standard condenser)

6. Oil Sump Temperature Unit not running: 140°F to 176°F (60.0°C to 80.0°C)

7. Oil Sump Temperature Unit running: 95°F to 162ºF (35.0°C to 72.2°C)

8. Oil Sump Differential: Oil Pressure(c) 18 to 22 psid (124.1 to 151.7 PaD)