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S S t t a a r r t t - - u u p p a a n n d d S S h h u u t t - - d d o o w w n n
5. If the evaporator was previously drained, fill and
vent the evaporator and chilled water circuit. After
all air is removed from the system (including each
pass), close the vent valves in the evaporator
waterboxes.
6. Lubricate the external vane control linkage as
needed.
7. Check the adjustment and operation of each safety
and operating control.
8. Close all disconnect switches.
9. Perform instructions listed in
up," p.
83.
Daily Unit Shut-down
N N o o t t e e : : Also refer to the figure (satisfied setpoint) in
"Start-up Sequence of Operation—Wye-delta," p.
75.
1. Press STOP.
2. After compressor and water pumps shut down, the
operator may turn Pump Contactors to OFF or open
pump disconnects.
84
"Daily Unit Start-
Seasonal Unit Shut-down
I I m m p p o o r r t t a a n n t t : : 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.
1. Open all disconnect switches except the control
power disconnect switch.
2. Drain the condenser piping and cooling tower, if
used. Rinse with clean water.
3. Remove the drain and vent plugs from the
condenser headers to drain the condenser. Air-dry
bundle of residual water.
4. Once the unit is secured for the season, the
maintenance procedures described in
Operation," p. 85
(tables for recommended
maintenance of standard and optional features)
should be performed by qualified Trane service
technicians.
N N o o t t e e : : During extended shut-down periods, be sure to
operate the purge unit for a two-hour period
every two weeks. This will prevent the
accumulation of air and non-condensables in the
machine. To start the purge, change the purge
mode to ON in the unit control "Settings Purge"
menu. Remember to turn the purge mode to
"Adaptive" after the two-hour run time.
"Normal
CDHF-SVX01N-EN
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