QUANTUM™ LX EVAPORATOR CONTROL PANEL
OPERATION
090.610-O (MAR 2016)
Page 49
[Demand Defrost] – The following drop down box
is provided:
• Disabled – The Defrost Input is not moni-
tored.
• Enabled – The Defrost Input will be moni-
tored, and a zone defrost will be initiated
when this input is energized.
The following screen buttons have also been provided:
[Clear Liquid Timer] – This button will set the Liquid
Timer to zero.
SETPOINTS – Defrost Schedule
Each pair of text boxes allow the user to enter a time in hours
(0-23) and minutes (0-59). A defrost will be initiated for each
entry on the defrost schedule, provided that the Defrost Source
is set to initiate defrosts by the Defrost Schedule.
An entry of 00:00 will void the time entry eld. If defrost is
required at midnight (00:00) use 00:01.
If liquid override is enabled, these times are also dependent on
a Liquid counter setpoint. The liquid counter counts a cumula-
tive time that the liquid solenoid output is open between de-
frosts. When the panel reaches a time in the Defrost Schedule
and the liquid counter exceeds the Liquid counter setpoint,
then the unit goes into it’s defrost mode. If the counter has not
exceeded the Liquid counter setpoint, no defrost is initialized.
The following are descriptions of the setpoints:
Time Column - The time of day, in hours and minutes,
that you want to switch to defrost a particular zone.
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