Ambirad Vision VSX Panduan Servis & Komisioning - Halaman 13

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6.3 Gas Valve Replacement

Step 1 Remove the burner assembly as

described in the section 4.3 Servicing.

Step 2 Open the left hand access door and

detach the impulse hoses from the air pressure

switch.

Step 3 Remove the 4 screws holding the burner

head onto the burner assembly and carefully

pull burner head assembly from housing.

Step 4 The burner head can now be detached

by disconnecting the impulse tube and the

burner head wiring.

Step 5 From within the combustion chamber,

remove the two screws holding the front of the

gas valve.

Step 6 Turning the housing over, remove the

four screws holding the rear burner plate in

position.

Step 7 Open the two side doors and remove the

rear plate assembly.

Step 8 Whilst the valve is still attached to the

plate, the jet carrier, gas inlet, and wiring

harness can now be detached from the gas

valve.

Step 9 The two screws retaining the gas valve

can then be removed.

Step 10 The gas valve can now be replaced.

Step 11 Refit all components in reverse order.