Carrier Transicold 69NT40-561-001 Operation And Service Manual page 18

The unit will remain in the full cooling mode as long as the EB switch is in the On position and
the Mode Switch is in the Full Cool position. If the cargo can be damaged by low temperatures,
the operator must monitor container temperature and manually cycle operation as required to
maintain temperature within required limits.
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.
To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suc-
tion pressure before disconnecting.
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 (front seated). Internal damage will result from operating the
compressor in a deep vacuum.
Take necessary steps (place plywood over coil or use sling on motor) to prevent motor from
falling into condenser coil.
Do not remove wire harnesses from module unless you are grounded to the unit frame with a
static safe wrist strap.
Unplug all module connectors before performing arc welding on any part of the container.
The unit must be OFF whenever a programming card is inserted or removed from the controller
programming port.
Use care when cutting wire ties to avoid nicking or cutting wires.
Do not allow moisture to enter wire splice area as this may affect sensor resistance.
T-340
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
1–4