Thermo King T-1090 SPECTRUM, Operator'S Manual

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20 TK 56704-1-OP-EN
speed. The clutch isolates the engine from the belt drive system during
electric standby operation on Model 50 units.
Reciprocating Compressor
The T-1090 SPECTRUM features the X430P, 4 cylinder reciprocating
compressor with 30.0 cu in (492 cc) displacement.
HMI Controller
The HMI Controller communicates with the Base Controller (located inside
the control box) and is used operate the unit and display unit information. It
also provides access to all the controller functions and menus.
CYCLE-SENTRY ™ ™ Start/Stop System
The CYCLE-SENTRY Start/Stop fuel saving system provides optimum
operating economy.
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The unit can start at any time without warning. Press the OFF key on the
HMI control panel and place the microprocessor On/Off switch in the Off
position before inspecting or servicing any part of the unit.
The CYCLE-SENTRY system automatically starts the unit on microprocessor
demand and shuts down the unit when all demands are satisfied.
The system monitors and maintains the compartment temperature, the
engine block temperature, and battery charge levels at a point where quick,
easy starts are possible.
Defrost
Frost will gradually build up on the evaporator coils as a result of normal
operation. Periodically this frost must be melted to prevent a loss of cooling
and airflow.
Defrost is accomplished by passing hot refrigerant gas through the
evaporator coil, thus melting the frost (or ice). Melted frost drains out of the
unit onto the ground through the drain tubes.
Defrost can be initiated at any time the evaporator coil temperature is below
42 F (5.5 C).
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