Carrier Supra 950MT Operation & Service Manual page 15

Truck refrigeration units with cab command controller

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In units with R404A and POE oil, the use of inert gas brazing procedures is mandatory, other-

wise compressor failure will occur. See Technical Procedure 98-50553-00 Inert Gas Brazing for

more information.

Use only ethylene glycol antifreeze (with inhibitors) in system as glycol by itself will damage

the cooling system. Always add pre-mixed 50/50 antifreeze and water to radiator/engine. Never

exceed more than a 50 percent concentration of antifreeze. Use a low silicate antifreeze.

When changing oil filters, the new filters should be primed with clean oil. If the filters are not

primed, the engine may operate for a period with no oil supplied to the bearings.

When changing fuel filter, the new filter should be filled with clean fuel.

Extreme care must be taken to ensure the manifold common connection remains immersed in

oil at all times. Otherwise air and moisture will be drawn into the compressor.

Check for correct power connection with connectors located in Main Control Relay Box.

Be certain that the unit is connected to an appropriate power source.

Do not allow the insulated jumper wire used to change unit Configurations to touch any

ground.

NEVER POUR COLD WATER INTO A HOT ENGINE. However, hot water can always be added to

a cold engine.

CAUTION

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62-11863

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