Carrier 69NT40-541-505 Operation And Service Manual page 17

The unit will remain in the full cooling
mode as long as the emergency bypass
switch is in the BYPASS position and the
MODE SWITCH is in the FULL COOL
position. If the cargo may be damaged by
low temperatures, the operator must
monitor container temperature and man-
ually cycle operation as required to main-
tain temperature within required limits.
To prevent trapping liquid refrigerant in
the manifold gauge set, be sure set is
brought to suction pressure before dis-
connecting.
Removing the compressor motor press-
fit stator in the field is not recommended.
The rotor and stator are a matched pair
and should not be separated.
The copper tube that connects to the oil
suction strainer extends out the bottom
with the bottom plate removed. Take pre-
cautions to avoid bending or breaking it
while changing crankcase positions.
Ensure that the thrust washer does not
fall off dowel pins while installing oil
pump.
The set screw on the crankshaft must be
removed for this type of oil pump. (See
Figure 6-8.)
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CAUTION
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CAUTION
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CAUTION
!
Use only Carrier Transicold approved
Polyol Ester Oil (POE) − Castrol-Icematic
SW20 compressor oil with R-134a. Buy in
quantities of one quart or smaller. When
using this hygroscopic oil, immediately
reseal. Do not leave container of oil open
or contamination will occur.
CAUTION
!
Take necessary steps (place plywood
over coil or use sling on motor) to pre-
vent motor from falling into condenser
coil.
CAUTION
!
DO NOT disassemble piston from NEW
suction modulating valve powerhead
assembly. Doing so may result in damage
to piston.
CAUTION
!
Unplug all controller connectors before
performing arc welding on any part of the
container.
CAUTION
!
The unit must be OFF whenever a pro-
gramming card is inserted or removed
from the controller programming port.
CAUTION
!
Do not allow moisture to enter wire splice
area as this may affect sensor resistance.
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