Cleaning The Humidifier (Optional); All Wine Temperatures (Awt); Extreme Climate Protection - Wine Guardian Sentinel Series Installation, Operation And Maintenance Manual

Cleaning the Humidifier (optional)

I
f the unit was furnished with a humidifier, it requires periodic maintenance. Follow the
instructions in the humidifier guide.

All Wine Temperatures (AWT)

The heating coil is located between the evaporator coil and blower inside the transition duct. It
contains the heating element and high temperature limit switches. The heating coil is wired to
work in conjunction with the thermostat. Since the thermostat prevents the heating and cooling
circuits from being energized at the same time, no additional power wiring is needed. We do
recommend using the AUTO mode on the thermostat so it can switch from heating to cooling
automatically. If using either the heat or cool only mode, the thermostat will not switch
automatically.
No additional maintenance is required for the heating coil. To test the heating coil operation, set
the thermostat on HEAT and set the temperature above the cellar temperature. The supply air
temperature should rise above the return air temperature by an amount shown in the
specifications.

Extreme Climate Protection

The purpose of the Extreme Climate Protection is to protect the compressor and refrigerant
system. It has two distinct components, a crankcase heater to keep the oil in the compressor
warm and prevent slugging on system start-up and a head pressure control to cycle the
condenser fan on and off automatically to maintain system head pressure.
To confirm that the system is working, feel the bottom of the heater when the compressor unit has
cycled off. When the unit starts, the condenser fan does not start at the same time as the compres-
sor. The condenser fan starts after the head pressure has built up. As the unit is running the
condenser fan cycles off and on while it holds the head pressure within a fixed range. The amount
of cycling (frequency and duration) depends on the air temperature. The colder the air, the more
frequent the cycling and with a longer duration.
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