Replacing a Liquid Level Detector

Procedure

1. Tap Shutdown on the home screen of the display module, and turn off the active power switch QF1 and standby power switch QF2. (For the model with a single power supply, you do not need to turn off QF2.)

   Exercise caution because the device is still energized after it is shut down on the home screen of the display module.

2. Open the front door, and remove the water pan cover, as shown in Figure 11-31.
   Figure 11-31 Removing a water pan cover
   

3. Cut the cable tie securing the liquid level detector, and remove the terminal.
4. Remove the two butterfly nuts on the liquid level detector fastener, remove cables from the liquid level detector, and remove the liquid level detector and its fastener, as shown in Figure 11-32.
   Figure 11-32 Removing a liquid level detector fastener
   

5. Remove the liquid level detector, as shown in Figure 11-33.
   • Remove screws from the high liquid level detector using a Phillips screwdriver, and remove the high liquid level detector.
   • Loosen the nuts on the low liquid level detector, and move the low liquid level detector upwards to remove it.
     Figure 11-33 Removing a liquid level detector
     
6. Install the new liquid level detector, and properly connect its terminals.
   Figure 11-34 Installing a liquid level detector
   

7. Install the water pan cover, and close the front door.
8. Power on the device and tap Start on the home screen. Ensure that the smart cooling product is running normally without any alarms.