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HDWA-SVX002C-EN
Unit Start-up and Shutdown
Procedures
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury.
When it is necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been properly trained in
handling live electrical components perform these
tasks.
WARNING
Asphyxiation Hazard!
Failure to follow instructions below could result in
death or serious injury. A significant release of
refrigerant into a confined space could displace
available oxygen to breathe and cause possible
asphyxiation.
Should a refrigerant release occur, evacuate the area
immediately and contact the appropriate rescue or
response authority.
• Do not run evaporator water pump longer than 30
minutes after the chiller is shut down.
• Ensure that the evaporator is isolated from the hot
water loop before changeover to heating mode.
The relief device is designed to relieve and discharge
the refrigerant from the unit if the pressure in the
evaporator exceeds 200 psig (1379.0 kPaG) on the
evaporator or 300 psig (2068.4 kPaG) on the
condenser.
Unit Start-up
NOTICE
Equipment Damage!
Failure to follow instructions could result in
equipment damage.
Ensure that the Uninterruptible Power Supply (UPS)
has been operating properly for a minimum of 10
hours before starting.
If required, after the system has been operating for
approximately 30 minutes and has become stabilized,
complete the remaining start-up procedure, as follows:
1. Check evaporator and condenser refrigerant pressures
under Condenser and Evaporator Reports on the
Tracer® AdaptiView™. The pressures are referenced
to sea level (14.6960 psia [101.3254 kPaA]).
Temporary Shut-down and Restart
To shut down for a short time, use the following procedure:
1. Press the STOP key on the Tracer® AdaptiView™.
2. Symbio™ 800 pump control will turn off the pump (after
a optional water pump delay time) when the STOP key
is pressed and automatically restart the pump when the
“Auto” key is pressed.
3. The unit will start normally, provided the following
conditions exist:
a. The Symbio™ 800 receives a call for cooling and
the differential-to-start is above the setpoint.
b. All system operating interlocks and safety circuits
are satisfied.
Extended Unit Shut-down
1. Perform the normal unit stop sequence using the STOP
key.
Note: Unless the water bundles are valved off and
drained, chiller power should remain ON at all
times to allow the magnetic bearings to levitate
the rotor in case water flow-driven rotation
should occur. Trane recommends leaving the
power on to maintain the Uninterruptible Power
Supply (UPS) battery.
2. Verify the chilled water and condenser water pumps are
cycled off. If desired, open disconnect switches to the
pumps.
3. Drain the condenser piping and cooling tower.
4. Remove the drain and vent plugs from the condenser
headers to drain the condenser.
5. After the unit is secured, perform the maintenance
identified in the following sections.
Seasonal Unit Start-up
1. Close all drain valves and reinstall the drain plugs in the
evaporator and condenser headers.
2. Service the auxiliary equipment according to the start-
up and maintenance instructions provided by the
respective equipment manufacturers.
3. Vent and fill the cooling tower, if used, as well as the
condenser and piping. At this point, all air must be
removed from the system (including each pass). Then,
close the vents in the condenser chilled water circuits.
4. Open all of the valves in the evaporator chilled water
circuit.
5. If the evaporator was previously drained, vent and fill
the evaporator and chilled water circuit. After all air is
removed from the system (including each pass), install
the vent plugs in the evaporator waterboxes.
NOTICE
Equipment Damage!
Failure to follow instructions could result in
equipment damage.
Ensure that the Uninterruptible Power Supply
(UPS) has been operating properly for a minimum
of 10 hours before starting.
Start-up and Shutdown
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