Garland Type SH/BA 3500 Service Manual

Also see for SH/BA 3500: Service manual Installation and operation manual Instructions for use

Contents

Service-Manual, new version author: Chr. Fuchs 17.06.99 / INDUCS Ltd. 18.09.03 page 10 of 285.5 FanATTENTION The heating area is warmed by the hot pan. In order to avoid injuries(burnings), do not touch the heating area.With this test, fan, fan observer as well as the degree of soiling are verified. At the beginning of thetest, the induction cooker should be cold. You need a pan with a bottom diameter of >28cm or aWok pan.Step Action Level Result1 Put a pan on the heating area and fill it upwith some litres of water12 heat2 Measure the time until the fan startsworking12 The fan should start workingafter 6-8 minutes3 Go on cooking for about 30 minutes 12 The heating process may notbe interrupted (indicatorlamp) The fan mayrepeatedly start and stop.4 Stop the induction cooker 0 The fan stops immediately5.6 Test componentsCAUTION The mains cable must be switched off.5.6.1 Power boardThe function of the transistor modul and of the rectifier are verified.Rectifier (picture 1)Conducting-state voltage Diode U+ = 0,5V: if all conducting-state voltages show approx. 0.5 V, therectifier is working.A short circuit between ‚+‘ and ‚-‚ means that the transistor module is defective.Transistor module (picture 2)Conducting-state voltage Diode U+ = 0.4 V: if all conducting-state voltages show approx.0.4 V, thetransistor module is working. A short circuit between C2-E2, C1-E1 and C1-2 means that thetransistor module is defective.If the rectifer and/or the transistor module seem to be defective, separate the power boardC016/C031 from heat sink and verify the rectifier and the transistor module without connection.