Thermo King T-1090 SPECTRUM, Operator'S Manual

Page: 41 / 112

TK 56704-1-OP-EN 41
If unit operation is required, the diesel engine will start as shown previously
in Starting The Diesel Engine.
Initiating a Manual Defrost Cycle
Defrost cycles are usually initiated automatically based on time or demand.
Manual defrost is only available if the zone is running and the zone
evaporator coil temperature is less than or equal to 45°F (7°C). Other features
such as door switch settings may not allow manual defrost under some
conditions.
To initiate a manual defrost cycle, press the Defrost Key as shown ( Figure
40, p. 41 ).
Figure 40. Defrost Key
The display will briefly show [DEFROST]. The Zone Select display will
appear. Zone 1 has been selected (
Figure 41, p. 41 ).
Figure 41. Select Zone
The display briefly shows [DEFROST], [PROGRAMMING DEFROST - PLEASE
WAIT] and then [DEFROST STARTED].
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