62-12259 3–26
LOW SPEED DELAY
S/S:
0 MINS TO 255MINS
(in 1 minute increments)
10 MIN
Select the length of time the unit is to remain in low speed after
starting, before transitioning to high speed, when in Start-Stop
Operation.
LOW SPEED DELAY
CONT:
0 MINS TO 255MINS
(in 1 minute increments)
0 MIN
Select the length of time the unit is to remain in low speed after
starting, before transitioning to high speed, when in Continu-
ous Operation.
Temperature Settings
DEFROST TIMER
SET for
1.5HRS
3HRS
6HRS
12HRS
The defrost timer will automatically put the unit into the defrost
cycle at the interval selected if DTT is below 40°F (4.4°C) or
the SAT is below 45°F (7.2°C).
Shorter times are generally used for warm, humid products like
produce.
Longer times can be used for dry and frozen products.
NOTE
The timer increments time toward the next defrost
only when the DTT is below 40°F and the unit is
running.
TEMP CONTROL RETURN AIR
SUPPLY AIR
RETURN AIR 2
The evaporator has both a Return Air Sensor and a Supply Air
Sensor.
RETURN AIR = With this setting the unit will operate so that
the return air (air entering the evaporator) will be controlled to
setpoint. Return air temperature is generally considered to be
a good sampling of the actual product temperature.
SUPPLY AIR = The unit will operate so that the supply air (air
leaving the evaporator) will be controlled to setpoint whenever
the setpoint is in the perishable range (greater than 10.4°F (-
12°C). When the setpoint is in the frozen range the unit will
control the return air as described in the preceding Return Air
choice.
RETURN AIR 2 = for units equipped with RAT2, the unit will
control temperature based on the return air entering the evap-
orator at the location of RAT2.
OUT OF RANGE
ALARM
Metric English
OFF OFF
2°C 4°F
3°C 5°F
4°C 7°F
The value entered here is the number of degrees away from
setpoint the temperature may drift before it is considered “Out-
Of-Range” and the configured alarm or alarm and shutdown
action will be activated. Refer to alarm 00053 Box Tempera-
ture Out-of-Range for more information
AUTOFRESH AIR CLOSED
OPEN
CFM CONTROL
Closed = AutoFresh Air Exchange assembly will be closed.
Open = Assembly will be open if the engine is running and the
setpoint is greater than 28.0°F (-2.22°C).
CFM Control = Assembly will be cycled open and closed over
a 20 minute time period. The length of time the assembly is
opened or closed is based on the Auto Fresh Air Control Func-
tional Parameter. The CFM CONTROL will only be active if the
engine is running and the setpoint is greater than 28.0°F (-
2.22°C).
AUTOFRESH AIR
CONTROL
5 To 50 CFM
(in 5 CFM increments)
25 CFM
When CFM Control is selected, this setting is used to set the
amount of air to be exchanged during each 20 minute cycle.
Table 3–2 Functional Parameters
Function Parameter Selections Description
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