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Figure 17-2 Ball vave Open/Close status
NOTICE - Equipment damage!
Do not operate the unit when the oil line, liquid line service valves and all the manual shutoff not in
right position. Failure to do so may cause serious compressor damage.
3.
Check the power supply voltage to the unit at the main power fused-disconnect switch. Voltage must be within
the voltage utilization range stamped on the unit nameplate. Voltage imbalance must not exceed 2 percent.
4.
Check the unit power phase to be sure that it has been installed in an "ABC" sequence.
NOTICE - Compressor damage!
Failure to follow applications guidelines on electrical phase rotation may result in compressor
damage.
5.
Confirm all fans rotate freely.
6.
Fill the chilled water circuits. Vent the system while water is being filled. Open the vents on the top of the
evaporator during filling and close when filling 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.
7.
Prove all interlock, Interconnecting Wiring and External wiring as described in the manual, such as water flow
switch and chilled water pump interlock.
8.
Start the chilled water pump to circulate of the water to vent air in the water system. Inspect all piping for
leakage and make any necessary repairs.
9.
With water circulating through the system, refer to
water flow and check water pressure drop through the evaporator meet requirement of
10. Adjust and confirm the chilled water flow switch for proper operation.
11. Stop the chilled water pump after vent air from the water system.
12. Power on the independent 230V single phase AC power source for the evaporator heater.
NOTICE - Evaporator heater damage!
Failure to connect power after filling water or remove power before draining will result in evaporator
immersion heater failure.
NOTICE - Equipment Damage!
Ensure all the electric heater of evaporator, the unit and water pump powered on to prevent
evaporator from freezing due to low ambient temperature and refrigerant migration while unit on
standby.
13. Power the unit to keep the heaters of compressor and oil separator energized. Ensure unit in the Stop mode.
NOTICE - Compressor Damage!
Figure 10 Evaporator Water Pressure Drop Curves
41
to adjust
Table
4.
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