Run Hours; On/Off Record - Emerson Liebert PEX+ Series User Manual

Precision air conditioner controller

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Chapter 1 Precision Air Conditioner Controller

2. Select Temp/Hum Graph -> Return Hum Graph to enter the Return Hum Graph submenu, as shown in Figure

1-38.

In the graph, current humidity is the origin, time is the horizontal axis and humidity is the vertical axis. The graph can

display the humidity changes from 6h to 48h through zooming operation and controlling the cursor movement.

Pressing the UP or DOWN button moves the cursor to the required zoom-control bar. Press the ENTER button to enter

editing status and then press the UP or DOWN button to zoom the graph in or out.

1.6.10 Run Hours

Press Up and Down in Main Menu 2/2 to move cursor to Run Hours and press Enter to access the Run Hours, as

shown in Figure 1-39.User can browse the total run hours of fan, compressor, heater and humidifier, and set operation

Service Interval.

The "run hours" submenus of fan, compressor, heater and humidifier are similar, taking fan run hours as an example,

the submenu interface is shown in Figure 1-40.In this menu, user can view the total run hours of the fan. If the hours in

Total Run Hours of fan exceed that in Run Hours Threshold, the system will generate an alarm to alert the

maintenance personnel for fan maintenance. After the fan is maintained, the Total Run Hours will be cleared. After

setting the HRS Exceeded Reset to Yes, the maintenance personnel can reset the Run Hours Threshold.

Select the On/Off Record in the Main Menu 2/2 interface and press the ENTER button to access the On/Off Record

menu, as shown in Figure 1-41. Only factory platform personnel can access the menu.

This menu is used to record the on/off information of the important components, such as fan, compressor, electrical

heater and humidifier. These records provide a base and reference to maintenance personnel for part service.

Figure 1-38 Return Hum Graph interface

Figure 1-39 Run Hours interface

Figure 1-40 Fan Run Hours interface

Liebert. PEX+Series Precision Air Conditioner User Manual

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