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TK 56218-2-OP-EN
SR-4 HMI Control Panel
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The unit can start at any time without warning. Press the OFF key on the
HMI control panel and place the microprocessor On/Off switch in the Off
position before inspecting or servicing any part of the unit.
Use the HMI control panel to operate the unit. for more information.
The HMI control panel has a display and eight touch sensitive keys. The
display is capable of showing both text and graphics. The four keys on the
left and right sides of the display are “hard” (dedicated) keys. The four keys
under the display are “soft” keys. The function of soft keys change
depending on the operation being performed. If a soft key is active, its
function will be shown in the display directly above the key.
Control Panel Display
The display is used to supply unit information to the operator. This
information includes setpoint, current box temperature, operating
information, unit gauge readings, system temperatures, and other
information as selected by the operator.
The default display is called the Standard Display (). It is described in detail
later in this section.
Display Icons
Display symbols or icons are used to present additional unit information.
Down-Pointing Arrow:
(At the left side of the display) Shows the unit is
cooling. If the arrow were pointing upward the unit would be heating.
CYCLE SENTRY/Continuous Mode Key:
The unit is running in Cycle
Sentry Mode as shown by the Cycle Sentry Icon in the upper right corner
of the display. If the Cycle Sentry icon is not present, the unit is running in
Continuous Mode.
USB:
The USB Icon in the upper left corner of the display will appear when
a USB device is connected to any of the USB Ports on the Unit Control
Panel or inside the unit control box.
