Unit Description
26
High Pressure Cutout Switch (HPCO):
This normally
closed switch monitors the discharge pressure at the
compressor. It opens on high discharge pressure to shut the unit
down to prevent damage.
Low Oil Level Sensor:
The low oil level sensor detects if
the oil drops below a certain level. If it stays below that level
for a specified time, the microprocessor will shut the unit down
and record alarm code 66 (normal code when changing oil).
Compressor Temperature Sensor:
This sensor provides
a compressor temperature input to the microprocessor. If the
compressor temperature is too high, the controller stops the
unit and records an alarm.
Coolant Temperature Sensor:
This sensor provides an
engine coolant temperature input to the microprocessor. If the
engine coolant temperature is too high, the controller stops the
unit and records an alarm.
Engine Oil Pressure Switch/Sensor:
This switch
provides an engine oil pressure input to the microprocessor. If
the oil pressure falls below 10 ± 2 psig (69 ± 14 kPa), engine
shutdown will occur.
Preheat Buzzer:
The preheat buzzer sounds when the
CYCLE-SENTRY
TM
system energizes the glow plugs. This
should warn anyone near the unit that the CYCLE-SENTRY
TM
system is about to start the diesel engine.
Electric Motor Overload Relay:
The overload relay
protects the electric standby motor. The overload relay opens
the circuit from the contactor to the electric motor if the motor
overloads for any reason and an alarm will occur. The relay
resets when the alarm code is cleared.
Содержание UT-1280
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Страница 3: ...Copyright 2016 Thermo King Corp Minneapolis MN USA Printed in USA UT 1280 TK 56373 1 OP Rev 0 10 16...
Страница 14: ...Safety Precautions 12 Figure 6 High Voltage Caution Located near high voltage box...
Страница 29: ...Unit Description 27 Unit Component Identification Figure 12 UT 1280 Front View...
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