Trane CenTraVac™ Water-Cooled Chiller CVHF - 1470-1720 - 1340 - 250E / 250L

Proper Water Treatment Required! The use of untreated or improperly treated water could result in scaling, erosion, corrosion, algae or slime

Use the services of a qualified water treatment specialist to determine what water treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water, or saline or brackish water

Condenser tube fouling is indicated when the approach temperature (the difference between the condensing refrigerant temperature and the leaving condenser water temperature) is higher than predicted

If the annual condenser tube inspection indicates that the tubes are fouled, two cleaning methods— mechanical and chemical—can be used to rid the tubes of contaminants. Use the mechanical cleaning method to remove sludge and loose material from smooth-bore tubes

To clean other types of tubes including internally- enhanced types, consult a qualified service organization for recommendations

1. Follow all instructions in “Waterbox Removal and Installation,” to remove waterbox covers

2. 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

- Shut down the chiller once each year to check the items for Leak Test Chiller

1. Check purge times and unit performance logs. If warranted, pressure leak test

2. Review oil analysis. If required, submit refrigerant sample for analysis

3. Inspect unit for any signs of refrigerant or oil leakage

4. Check unit for any loose screws on flange, volutes, or casing

Failure to follow safe leak test procedures below could result in death or serious injury or equipment or property-only-damage

Never use an open flame to detect gas leaks. Use a leak test solution for leak testing

- Shut down the chiller once each year to check the items of Starter or Adaptive FrequencyTM Drive

2. Check all connections per manufacturer specifications

3. Follow all manufacturer recommendations for starter or Adaptive FrequencyTM Drive (AFD) maintenance

4. Inspect/clean/service the AFD cooling system (water- or air-cooled AFD)

5. Record all applicable starter or starter component settings;

- 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)

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

1. Inspect for fouling and scaling in tubes

2. Check operation of condenser water flow sensing device

3. Factory recommendation to eddy current test tubes every three years;