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• Under no circumstances should a technician electrically probe the modules at any point, other than the
connector terminals where the harness attaches. Module components operate at different voltage levels
and at extremely low current levels. Improper use of voltmeters, jumper wires, continuity testers, etc.
could permanently damage the module.
• Technician mode should be canceled when work is complete. If Technician mode is not canceled, Tech-
nician Mode will be available for 60 minutes after the last key press without requiring a code, even after
placing the SROS in the OFF and then back in the RUN/ STOP position.
• Ensure that the clock you are using is accurate. Also, some customers are located in different time zones
from the repair location. If you know the owners desired location time, enter that time. If you don’t, enter
the current time at your location.
• DO NOT leave the air intake circuit energized for the full five minutes if full amperage is shown, as the
intake air heater element life will be greatly shortened.
• Unit uses R-452A refrigerant and POE oil. The use of inert gas brazing procedures is mandatory for all
Carrier Transicold refrigeration units; otherwise compressor failure will occur. For more information Refer
to Technical Procedure 98-50553-00 Inert Gas Brazing.
• Running the engine for an extended period of time with the manual plunger up can cause a priming pump
failure.
• Torque fuel level sensor mounting screws to 15 to 18 inch/lbs (1.7 to 2.0 Nm). DO NOT over tighten, as
little as 20 inch/pounds (2.3 Nm) will damage the sensor.
• When changing oil filters, the new filters should be primed (partially filled) with clean oil if possible. If the
filters are not primed, the engine may operate for a period with no oil supplied to the bearings.
• NEVER POUR COLD WATER INTO A HOT ENGINE, however hot water can be always be added to a
cold engine.
• Use only red Extended Life Coolant, Nitrite Free (ELC-NF) that is premixed to a 50/50 concentration of
coolant/water. Coolant should meet ASTM specifications D3306 and D6210, and be labeled for at least
five years, 12,000 hours service life. Do not add conventional or long life coolant (green, purple, or blue
green) to a coolant system using ELC-NF (Red) coolant except in an emergency. If the ELC-NF coolant
is diluted with conventional or long life coolant, the change reverts to two years, 6,000 hours.
• The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacu-
ate the system below 0 psig. Never operate the compressor with the suction or discharge service valves
closed (frontseated). Internal damage will result from operating the compressor in a deep vacuum.
• When a module is replaced, software should be upgraded before switching the unit on. This will ensure
software compatibility of all modules.
• Do not bend tubing on the condenser coil when installing a new condenser. Bend the unit tubing if tubes
do not align correctly.
• Under no circumstances should anyone attempt to repair sealed module internal components. Should a
problem develop with these components, contact your nearest Carrier Transicold dealer for replacement.
• Do not direct water or steam into the generator openings. Do not allow any soap and water solutions to
enter the generator. Generators of this type should not be “flashed.” Operation with external voltage
source or momentary shorting of leads will damage the generator and may cause injury.
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