Table Of Contents - Wolf MWD24 Technical Service And Parts Manual

Section 1 - General Information
Introduction........................................................................ 1-2
Important Safety Information.............................................. 1-2
Technical Assistance.......................................................... 1-2

Table of Contents............................................................... 1-3

Warranty Information.......................................................... 1-4
Model Number Key............................................................. 1-5
Model Confi gurations......................................................... 1-6
Section 2 - Installation Information
Electrical Requirements..................................................... 2-2
Clearances and Dimensions ............................................. 2-3
Installation Procedures ...................................................... 2-4
Section 3 -Theory and Operation
User Operation .................................................................. 3-2
Set Clock ........................................................................... 3-2
Time Cooking .................................................................... 3-2
Setting Power Level .......................................................... 3-2
Sensor Cooking ................................................................. 3-3
Manual Defrost / Manual Cooking ..................................... 3-4
Add Minute ........................................................................ 3-5
More or Less Time Adjustment ......................................... 3-5
Demonstration Mode ........................................................ 3-5
Technical Operation .......................................................... 3-6
Schematic (Off Condition) ................................................. 3-7
Sensor Function ................................................................ 3-8
Sensor Circuit ................................................................... 3-9
Touch Panel Function ....................................................... 3-10
Description of LSI ............................................................. 3-11
Section 4 - Component Access and Removal
Warnings and Cautions..................................................... 4-2
Microwave Measurement Procedure ............................... 4-4
Touch Control Panel Servicing ......................................... 4-5
Drawer Microwave Disassembly ...................................... 4-6
Inner Drawer Removal ..................................................... 4-7
Choke Cover Removal ..................................................... 4-7
Rack Gear Removal ......................................................... 4-7
Control Panel Removal .................................................... 4-8
Cavity Light Replacement ............................................... 4-8
Power Cord Replacement ................................................ 4-9
Sensor, Stirrer Mtr, & Upper TCO ....................................
Auto Drawer Gear Removal ............................................. 4-10
Actuator Removal/Adjustment .......................................... 4-10
Latch Hook Assembly Removal ........................................ 4-11
Switch (Stop, Monitor, Secondary Interlock) Removal ..... 4-11
Switch (Stop, Monitor, Secondary Interlock) Adjustment . 4-12
Major Control Components .............................................. 4-13
Drawer Microwave
TABLE OF CONTENTS
Section 5 -Parts and Exploded Views
Parts List .......................................................................... 5-2
Exploded View .................................................................
Section 6 - Troubleshooting Guide
Warnings and Cautions .................................................... 6-2
Microwave Measurement Procedure ................................ 6-3
Touch Control Panel Test .................................................. 6-4
Key Unit Test ..................................................................... 6-5
Relay Test ......................................................................... 6-5
Defrost Test ...................................................................... 6-6
Open Fuse On PWB ........................................................ 6-6
AH Sensor Test ................................................................ 6-7
Magnetron Assembly Test ................................................ 6-9
Thermal Cut-Out Test ....................................................... 6-10
Secondary Interlock Switch Test ...................................... 6-10
Stop Switch Test ............................................................... 6-10
Monitor Switch Test .......................................................... 6-10
Blown Monitor Fuse Test .................................................. 6-11
Power Transformer Test ................................................... 6-11
Section 7 - Wiring Diagrams
Harness Pinout Wiring ...................................................... 7-2
Power Unit Circuit ............................................................. 7-3
Power Unit Printed Circuit Board ...................................... 7-4
Control Unit Circuit ............................................................ 7-5
Control Unit Printed Circuit Board ...................................... 7-6
4-9
1-3
General Information
5-3