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87
CVHE-SVU01E-EN
Unit Shutdown Procedures
Daily Unit Shutdown
Note: Refer to Start-Run Shutdown
sequence in General Information
Overview Sequence of Operation.
1. Press STOP.
2. After compressor and water
pumps shutdown turn Pump
Contactors to OFF or open pump
disconnects.
Seasonal Unit Shutdown
CAUTION
Oil Pump Heater
Operation!
CONTROL POWER DISCONNECT
SWITCH MUST REMAIN CLOSED TO
ALLOW OIL SUMP HEATER
OPERATION. Failure to do this will
allow refrigerant to condense in the
oil pump.
3. Open all disconnect switches
except the control power
disconnect switch.
4. Drain the condenser piping and
cooling tower, if used. Rinse with
clean water.
5. Remove the drain and vent plugs
from the condenser headers to
drain the condenser. Air dry bundle
of residual water.
6. Once the unit is secured for winter,
the maintenance procedures
described under “Annual
Maintenance” in the Periodic
Maintenance section of this
manual should be performed by
qualified Trane service technicians.
Note: During extended shutdown, be
sure to operate the purge unit for a 2-
hour period every two weeks. This
will prevent the accumulation of air
and noncompensable in the
machine. To start the purge, change
the purge mode to ON in the
DynaView
™
Settings Purge Menu.
Remember to turn the purge mode to
Adaptive after the 2-hour run time.
Trouble Analysis
If the ALARM indicator on the control
panel is flashing, an MMR diagnostic
has occurred. Refer to Diagnostic
section for trouble shooting
information. (page 35)
Unit Shutdown