United Technologies Carrier TRANSICOLD 68RM35-604-20 Operation And Service page 4

Rearmount bus air conditioning unit

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SPECIFIC WARNING AND CAUTION STATEMENTS

To help identify the label hazards on the Unit and explain the level of awareness each one carries, an explanation is given

with the appropriate consequences:

DANGER --- means an immediate hazard which WILL result in severe personal injury or death.

WARNING --- means to warn against hazards or unsafe conditions which COULD result in severe personal injury or

death.

CAUTION --- means to warn against potential hazard or unsafe practice which COULD result in minor personal injury,

product or property damage.

The statements listed below are applicable to the refrigeration unit and may appear elsewhere in this manual. These

recommended precautions must be understood and applied during operation and maintenance of the equipment covered

herein.

When servicing the unit, use caution when handling R-134a. This refrigerant when in contact with high

temperatures (about 1000_F) will decompose into highly corrosive and toxic compounds.

Be sure to avoid refrigerant coming in contact with the eyes. Should refrigerant come in contact with the

eyes, wash eyes for minimum of 15 minutes with potable water only. THE USE OF MINERAL OIL OR

Be sure to avoid refrigerant coming in contact with the skin. Should refrigerant come in contact with the

skin, it should be treated as if the skin had been frostbitten or frozen.

Be sure ventilation in the workspace is adequate to keep the concentration of refrigerant below 1000 parts

Do not use a nitrogen cylinder without a pressure regulator and do not use oxygen in a refrigeration

system, as an explosion could occur.

Never fill a refrigerant cylinder beyond its rated capacity. Cylinder may rupture due to excessive pressure

When starting the unit, be sure that all manual refrigerant valves in the discharge line are open. Severe

SAFETY SUMMARY

REFRIGERANT OILS IS NOT RECOMMENDED.

per million. If necessary, use portable blowers.

Beware of rotating fan blades and unannounced starting of fans.

when exposed to high temperatures.

damage could occur from extremely high refrigerant pressures.

WARNING

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