Thermo King T-1080S, Maintenance Manual

Page: 27 / 191

Unit Description
26
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.
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.
Electric Motor Overload Relay (Model 50):
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.
Fuses:
Sizes and functions are described in the
Specifications section of this manual.
Figure 3: T-680S Front View
Figure 4: T-1080S Front View