Thermo King 919180, Manual

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P-T System Description
40
Standard Model 50 Features
The following features are standard equipment on
units equipped with Electric Standby.
Automatic Diesel/Electric Selection:
The unit will
automatically switch to electric operation when a
power cord is connected and the standby power is
switched On.
Remote Reset Solenoid:
A remote reset solenoid
is provided to reset the overload relay.
Hot Gas Heat:
Hot gas heat is utilized on standard
Model 50 units.
Automatic Phase Correction (Three Phase Units
Only):
The control system features two motor
contactors. This allows correct motor rotation
regardless of phase rotation on the incoming
power.
Optional Model 50 Features
The following feature is available as an option on
units equipped with Electric Standby.
• Electric Heat
Figure 13: High Voltage Tray with Phase Correction
Standard Board
Figure 14: High Voltage Tray with Phase Correction
and Electric Heat
CAUTION: The Electric Power Icon will
not appear in the display if electric power
is not present (the unit is not plugged in),
or if there are electrical voltage or phase
problems while the power cord is
connected to a power outlet. Under these
conditions, when the microprocessor
power switch is turned on and the
O
N
key
is pressed, the unit will start and run on
diesel automatically.
CAUTION: Electric operation mode is not
stored in the controller if the
microprocessor power switch is turned
O
FF
. Turning the switch back
O
N
again,
even with the power cord connected, will
not assure start up in Electric Standby. If
the voltage is low or an electric phase is
missing, the Electric icon will not be
present in the display and the unit will
start in diesel.