Garland GIU 1.5 (BH/BA 1500) Service Manual

Also see for BH/BA 1500: Installation and operation manual Instructions for use

Contents

Garland GIU 1.5 (BH/BA 1500) Service Manual Manual pdf 8 page image

Part # 4521635 (03/04/08)Page 8Transistor module (IGBT)G ECThe IGBT (Insulated Gate Bipolar Transistor) is fixed onto thepower print (board) with three solder connections.The IGBT Transistor has as a supplementary protection anintegrated recovery diode. To begin, measure the on-statevoltage of this diode. The forward voltage of this diode isapproximately 0.5VDC.If the recovery diode shows a short circuit or aninterruption, the IGBT transistor is defective and must bereplaced.CU (RTCS) SensorsCU Sensor 1 (Center)4 – 5.5 OhmsCU Sensor 2 (Outer)4 – 5.5 OhmsThe two CU sensors are mounted directly on top of the coilfor base-line, (counter top) cookers. Both the center andouter sensors, will measure approximately 4 - 5.5 Ohms.PotentiometerThe potentiometer is mounted onto the main power switch.On setting “0” the reading will be 0 - Ohms and on themaximum level, the resistor will read 10kOhm (10,000 Ohms).Resistor is proportional (linear) to swing angle. (see followingphoto for measurement points).