Carrier 69NT40-489-100 Series Operation And Service Manual page 13

SPECIFIC WARNING AND CAUTION STATEMENTS - - Continued
CAUTION
The copper tube which connects to the oil suc-
tion strainer extends out the bottom with the
bottom plate removed. Take precautions to
avoid bending or breaking it while changing
crankcase positions.
CAUTION
Ensure that thrust washer does not fall off dowel
pins while installing oil pump.
CAUTION
The set screw on the crankshaft must be
removed for this type of oil pump.
CAUTION
Use only Carrier Transicold approved Polyol
Ester Oil (POE) -- Castrol-Icematic SW20 com-
pressor 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 prevent motor from fal-
ling into condenser coil.
If the thermostatic expansion valve is found to
be in need of replacement, then the power head
and cage assembly are to replaced as a pair.
They are a matched pair and replacing one
without the other will affect the superheat
setting.
DO NOT disassemble piston from NEW suction
modulating valve powerhead assembly. Doing
so may result in damage to piston.
The unit must be OFF whenever a program-
ming card is inserted or removed from the con-
troller programming port.
All 69NT40-511-3XX units must use software
revision 5108 or higher to enable stepper motor.
Optional features may require higher software
revision levels to enable functionality.
Do not allow moisture to enter wire splice area
as this may affect the sensor resistance.
Safety--9
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
T-305