SR-4 HMI Control Panel
- Warning
- Risk of Injury
- The unit can start at any time without warning. Press the OFF key on the HMI control panel, place the unit Service Switch (On/Off switch) in the Off position, and disconnect the battery 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.
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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. |
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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. |
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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. |
Hard Keys
The keys on either side of the display are dedicated or hard keys. Their function always remains the same.
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On Key: Used to turn the unit on. First the display
will briefly show the Thermo King Logo and then the statement |
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Off Key: Used to turn the unit off. First, the display
will briefly show |
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Defrost Key: Press this key to initiate a Manual Defrost cycle. |
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CYCLE SENTRY: Used to select Cycle Sentry Mode or Continuous Mode operation if allowed by OptiSet Plus. For more information, refer to (Selecting Cycle Sentry or Continuous Mode). |
Soft Keys
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The four soft keys under the display are multi-purpose keys. Their function changes depending on the operation being performed. If a soft key is active the key function is shown in the display directly above the key. The keys are numbered from left to right, with Key 1 on the far left and Key 4 on the far right. |
Typical soft key applications:
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