Maintenance Precautions; Auto-Start; Engine Coolant; Refrigerants - Carrier Supra 950MT Operation & Service Manual

1.4

MAINTENANCE PRECAUTIONS

Beware of unannounced starting of the unit. This unit is equipped with Auto-Start in both the road and standby
modes. The unit may start at any time. When performing any check of the system make certain the RUN/STOP
Switch is in the OFF position.
Be sure power is turned off before working on motors, controllers, solenoid valves, and electrical control switches.
Tag circuit breaker and vehicle ignition to prevent accidental energizing of circuit.
Do not bypass any electrical safety devices, e.g. bridging an overload, or using any sort of jumper wires. Problems
with the system should be diagnosed and any necessary repairs performed by qualified service personnel.
When performing any arc welding on the unit or container, disconnect all wire harness connectors from the micro-
processor. Do not remove wire harnesses from the modules unless you are grounded to the unit frame with a static
safe wrist strap.
In case of electrical fire, place RUN/STOP switch in the OFF position and extinguish with CO2 (never use water).
1.5

AUTO-START

Your refrigeration unit is equipped with Auto-Start in both Start/Stop and Continuous Run modes. The unit may start
at any time. A buzzer will sound for five seconds before the unit is started. When performing any check of the refrig-
eration unit (e.g., checking the belts, checking the oil), make certain that the RUN/STOP Switch is in the OFF (0)
position.
1.6

ENGINE COOLANT

The engine is equipped with a pressurized cooling system. Under normal operating conditions, the coolant in the
engine and radiator is under high pressure and is very hot. Contact with hot coolant can cause severe burns. Do
not remove the cap from a hot radiator; if the cap must be removed, do so very slowly in order to release the pres-
sure without spray.
1.7

REFRIGERANTS

The refrigerant contained in this unit can cause frostbite, severe burns, or blindness when in direct contact with the
skin or eyes. For this reason and because of legislation regarding the handling of refrigerants during system ser-
vice, we recommend that you contact your nearest Carrier Transicold authorized repair facility whenever your unit
requires refrigeration system service.
1.8

BATTERY

This unit is equipped with a lead-acid type battery. The battery normally vents small amounts of flammable hydro-
gen gas. Do not smoke when checking the battery. A battery explosion can cause serious physical harm and/or
blindness.
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