Carrier 69NT40-511-310 - Page 6

Safety-4T-296
SPECIFIC WARNING AND CAUTION STATEMENTS -- Continued
CAUTION
Use only Carrier Transicold approved Polyol Ester Oil (POE) -- Mobil ST32 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 prevent motor from falling
into condenser coil.
CAUTION
If the thermostatic expansion valve is found to be in need of replacement, then the power head and
cage assembly are to replaced asapair. They are a matched pair and replacing one without theother
will affect the superheat setting.
CAUTION
DO NOT disassemble piston from NEW suction modulating valve powerhead assembly. Doing so
may result in damage to piston.
CAUTION
The unit must be OFF whenever a programming card is inserted or removed fromthe controllerpro-
gramming port.
CAUTION
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.
CAUTION
Do not allow moisture to enter wire splice area as this may affect the sensor resistance.
CAUTION
Do not allow the recorder stylus to snap back down. The stylus arm base is spring loaded, and
damage may occur to the chart, or the stylus force may be altered.
CAUTION
Theinsidemechanismoftherecorder,particularlytheinsideoftheelementhousingshouldneverbe
oiled, however, control mechanisms should be sprayed periodically (every 60 days) with corrosion
inhibiting CRC 3-36a or 6-66 or LPS no. 2.
CAUTION
Recorderelementcapillarytubing maybebent,but neversharper than 1/2” radius;extracareshould
be taken when bending adjacent to welds. The bulb should never be bent, as this will affect
calibration.
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