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NOTICE
Equipment Damage!
Failure to follow instructions could result in equipment
damage.
Lock the disconnect in the "OPEN" position to prevent
accidental start-up and damage to the system when it
has been shut down for extended periods.
6. At least every three months (quarterly), check the
refrigerant pressure in the unit to verify that the
refrigerant charge is intact.
Seasonal Unit Start-Up Procedure
1. Close all valves and re-install the drain plugs in the
evaporator.
2. Service the auxiliary equipment according to the start-
up/maintenance instructions provided by the
respective equipment manufacturers.
3. Close the vents in the evaporator chilled water circuits.
4. Open all the valves in the evaporator chilled water
circuits.
5. Open all refrigerant valves to verify they are in the
open condition.
6. If the evaporator was previously drained, vent and fill
the evaporator and chilled water circuit. When all air is
removed from the system (including each pass), install
the vent plugs in the evaporator water boxes.
7. Check the adjustment and operation of each safety and
operating control.
8. Refer to the sequence for daily unit startup for the
remainder of the seasonal startup.
System Restart After Extended
Shutdown
NOTICE
Equipment Damage!
Failure to follow instructions could result in equipment
damage.
Ensure that the compressor and oil sump heaters have
been operating properly for a minimum of 24 hours
before starting.
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).
RTAF-SVX001K-EN
NOTICE
Compressor Damage!
Failure to follow instructions below could cause
catastrophic damage to the compressor.
Do not leave oil line shut off valve or the isolation
valves closed on unit start-up.
2. Check the oil sump level.
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
filling is completed.
NOTICE
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.
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 pressure drops through the
evaporator. See
"Evaporator Waterside Pressure
Drop," p. 32
and water flow rates in
p.
11.
7. Verify proper operation of flow switch on the
evaporator waterbox.
8. Stop the water pump. The unit is now ready for start-
up as described previously.
Start-Up and Shutdown
"General Data,"
59
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