Fagor HVG-10/11, Technical Manual

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9 PREVENTIVE MAINTENANCE
In order to guarantee the safe, cost-effective and non contaminating operation of your oven, periodic
maintenance is essential. This allows you to keep it in good condition and prolongs its service life. Maintenance
must be done by AUTHORISED TECHNICAL PERSONNEL, at least once a year. Servicing is of vital
importance as the wear or damage of parts are gradual processes and so if a malfunction can be detected in
time, the costs involved are low and the benefits with regard to safety and cost-effectiveness can be very high.
The one-year interval between servicing has been calculated based on an average use of 4 hours per day. If the
unit is used intensively, for example in a catering company, serving must be done at shorter intervals.
1. CONVECTION SYSTEM
1.1 Ignition spark plug
Release and extract the combustion chamber.
Check its status and connections visually.
Clean the detector with “Scotch”
Set the oven to convection mode to activate the spark plug.
Check for correct ignition
1.2 Flame detector
Release and extract the combustion chamber.
Check its status and connections visually.
Clean the electrode with “Scotch”
1.3 Mains gas pressure
Check at appliance inlet.
Measure when the appliance is in operation.
(Measurements may be made at the gas valve inlet)
1.4 Gas circuit water-tightness
Check.
1.5 Heat exchanger
Check visually that it is in good condition.
Check the status of the graphite seals.
Replace if damaged.