Ambirad Vision VSX Servicing & Commissioning Manual - Page 12

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6. Replacing Parts.

6.1 Burner Controller Replacement

Step 1 Slacken screw in burner lid and open the

right hand burner access door.

Step 2 Disconnect burner controller from the

wiring harness.

Step 3 Disconnect the HT Lead from burner

controller

Step 4 Remove the two screws attaching the

controller to the burner and remove.

Step 5 Fit new burner controller

Step 6 Refit HT leads and refit burner controller

to wiring harness.

Step 7 Test product and close access doors.

6.2 Air Pressure Switch Replacement

Step 1 Disconnect the two silicone impulse

tubes and three wiring connections making note

of replacement positions.

Step 2 Remove the two screws as shown below.

Step 3 The air pressure switch can now be

removed.

Step 4 Fit the new air pressure switch ensuring

the impulse tubes are connected as shown

below.

Step 5 Test product and close access doors.