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Unit Description

CYCLE-SENTRY Start-Stop Controls

The CYCLE-SENTRY Start-Stop fuel saving system provides

optimum operating economy.

CYCLE-SENTRY automatically starts the unit on

microprocessor demand, and shuts down the unit when all

demands are satisfied.

The system automatically monitors and maintains

compartment temperatures, the engine block temperature and

battery charge levels at a point where quick, easy starts are

possible.

Defrost

Frost gradually builds-up on evaporator coils as a result of

normal operation. The unit uses hot refrigerant to defrost the

evaporator coils. Hot refrigerant gas passes through the

evaporator coil and melts the frost. The water flows through

collection drain tubes onto the ground. The methods of defrost

initiation are Manual and Automatic.

Automatic Defrost: The controller is programmed to

automatically initiate timed or demand defrost cycles. Defrost

intervals are set at the factory at 2, 4 6, 8, 10, or 12 hours. The

unit can enter a demand defrost cycle as often as every 30

minutes if required.

Manual Defrost: The operator manually initiates a defrost

cycle.

NOTE: The unit will not perform a Manual Defrost cycle

unless the O

N/OFF switch is set to ON, the unit is running in

Continuous or CYCLE-SENTRY mode, (or shut down in

CYCLE-SENTRY Null mode), and the coil temperature is

below 45 F (7.2 C).

WARNING: Set the unit ON/OFF switch to OFF

before opening doors or inspecting any part of the

unit. With the unit O

N/OFF switch in the ON position,

the unit may start at any time without warning.