Carrier 69NT40-561-019, Operation And Service Manual

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T-359 1–4
CAUTION
!
Allowing the scroll compressor to operate in reverse for more than two minutes will result in
internal compressor damage. Turn the start-stop switch OFF immediately.
CAUTION
!
To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suc-
tion pressure before disconnecting.
CAUTION
!
The scroll compressor achieves low suction pressure very quickly. Do not use the compressor
to evacuate the system below 0 psig. Never operate the compressor with the suction or dis-
charge service valves closed (frontseated). Internal damage will result from operating the com-
pressor in a deep vacuum.
CAUTION
!
Take necessary steps (place plywood over coil or use sling on motor) to prevent motor from
falling into condenser coil.
CAUTION
!
Do not remove wire harnesses from module unless you are grounded to the unit frame with a
static safe wrist strap.
CAUTION
!
Unplug all module connectors before per forming arc welding on any part of the container.
CAUTION
!
The unit must be OFF whenever a program ming card is inserted or removed from the control-
ler programming port.
CAUTION
!
Use care when cutting wire ties to avoid nicking or cutting wires.
CAUTION
!
Do not allow moisture to enter wire splice area as this may affect the sensor resistance.