Thermo King SB-210, Manual

Page: 46 / 159

Operating Instructions
46
Initiating a Manual Defrost Cycle
Defrost cycles are usually initiated automatically
based on time or demand. Manual Defrost is also
available if the unit is running and the coil
temperature is less than 45 F (7 C). Other features
such as door switch settings may not allow
Manual Defrost to be initiated.
Use the following steps to initiate a Manual
Defrost:
1. Press the
D
EFROST
key. See Figure 26.
2. The “Defrost” Screen briefly appears. See
Figure 27.
3. The “Programming Defrost” Screen briefly
appears. See Figure 27.
4. The “Defrost Started” Screen briefly appears.
See Figure 27.
5. A modified Standard Display appears. The bar
indicator will fill in showing time remaining
to complete the Defrost cycle. The bar
indicator in the figure shows that the Defrost
cycle is 50% complete. When the Defrost
cycle is complete the display returns to the
Standard Display. See Figure 27.
If the unit is prevented from going into a
Manual Defrost (IE: Coil temperature more
than 45 F (7 C) or on economy mode etc.). A
“Defrost Unavailable” Screen briefly appears.
The display returns to the Standard Display.
See Figure 27.
Figure 27: Initiating Manual Defrost Screen
Sequence
Terminating a Defrost Cycle
The Defrost cycle will terminate automatically
when the coil temperature is greater than 58 F
(14 C) or the defrost timer expires. Defrost can
also be terminated by turning the unit off.
1. Standard Display
2. Defrost Key
Figure 26: Initiating a Manual Defrost Cycle
1
2
or