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Step 7 Tap Maint > Performance Maint on the home screen to enter the performance maintenance
screen, and clear accumulated running time of the float.
Figure 6-13 Replacing the float
----End
6.5.14 Replacing a Differential Pressure Sensor
Prerequisites
The differential pressure sensor needs to be replaced.
A spare and functional differential pressure sensor is available.
Context
Recommended tool: Phillips screwdriver
Preparation: maintain from the rear door.
Procedure
Step 1 Remove the rear door and air filters.
Step 2 Remove the differential pressure tube on the differential pressure sensor.
Step 3 Open the differential pressure sensor shell cover and remove the signal cables.
Step 4 Use the Phillips screwdriver to loosen the three screws fastening the differential pressure
sensor and remove the faulty differential pressure sensor, as shown in Figure 6-14.
Step 5 Replace the differential pressure sensor and connect cables to the new differential pressure
sensor.
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