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146 RTAC-SVX01F-EN
Unit Start-Up Procedures
System Restart After Extended Shutdown
Follow the procedures below to restart the unit after extended shutdown:
1. Verify that the liquid line service valves, oil line, compressor discharge service
valves and suction service valves are open (backseated).
CAUTION
Compressor Damage!
Catastrophic damage to the compressor will occur if the oil line shut off
valve or the isolation valves are left closed on unit start-up.
2. Check the oil separator oil level (see Maintenance Procedures section).
3. Fill the evaporator water circuit. Vent the system while it is being filled. Open the
vent on the top of the evaporator and condenser while filling and close when fill
-
ing is completed.
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in the unit may result
in scaling, erosion, corrosion, algae or slime. It is recommended that the
services of a qualified water treatment specialist be engaged 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.
4. Close the fused-disconnect switches that provides power to the chilled water
pump.
5. Start the evaporator water pump and, while water is circulating, inspect all piping
for leakage. Make any necessary repairs before starting the unit.
6. While the water is circulating, adjust the water flows and check the water pres-
sure drops through the evaporator. Refer to “Water System Flow Rates” and
“Water System Pressure Drop”.
7. Adjust the flow switch on the evaporator piping for proper operation.
8. Stop the water pump. The unit is now ready for start-up as described in “Start-Up
Procedures”.