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Awi 140T Service Manual

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SERVICE MANUAL
AWI 140T and 180T
For technical assistance please phone
0845 1303292

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Summary of Contents for Awi 140T

  • Page 1 SERVICE MANUAL AWI 140T and 180T For technical assistance please phone 0845 1303292...
  • Page 2 INDEX SAFETY WARNINGS SPECIFICATIONS INSTALLATION OPERATING INSTRUCTIONS CLEARING MEMORY/OPERATIONS see section 4)7.1and 7.2 WIRING DIAGRAM, OVEN WIRING DIAGRAM, PCB,KEY PAD AND RELAY BOARD DECRIPTION OF OPERATION INCLUDING DOOR SWITCH OPERATION TESTING COMPONENTS/FAULT FINDING POWER TESTING EXPLODED VIEW PART NUMBER IDENTIFICATION...
  • Page 3 3 to operate soft/start system). DO NOT TOUCH WHEN MACHINE IS PLUGGED IN 1) Ensure H.V. Capacitors (2) are both discharged using a suitably insulated discharge tool (AWI part number CSP1) 2) Do not attempt to measure High Voltage (C5000VDC) with the machine operating.
  • Page 4 SAFTEY FIRST 5) Before putting the oven back into service ensure the following: a) Power supply is correct and earth bonding secure. b) Location is not detrimental to the machine. c) Ventilation is adequate with 50mm clear all round the machine.
  • Page 5 AWI140T and AWI180T Specification Power Requirement AWI180t 230-240 ac 50Hz 13.0A Single Phase AWI140T Power Consumption AWI180T 3.1KW AWI140T 2.5KW Power Output Microwave 100% AWI180T 1800W (IEC 705) AWI140T 1400W (IEC 705) External Dimensions Height 335mm Width 510mm Depth 415mm Internal Dimensions Height 210mm...
  • Page 6 DO NOT STACK OVENS ANY MORE THAN 2 HIGH YOU MUST LEAVE A MINIMUM OF 50MM ALL AROUND THE OVEN THERE MUST BE NO MORE THAN 2 METERS FROM FLOOR LEVEL TO THE TOP OF THE HIGHEST AWI 140T or AWI180T...

  • Page 7: Manual Operation

    OPERATING INSTRUCTIONS Manual operation MEMORY CHECK AUTO MANUAL POWER Manual operation is a method in which time and power can be repeatedly adjusted depending on the type and COOK composition of the food which is being cooked. 1-stage cooking Example 1: 2 minutes 15 seconds cooking time with 50% power.
  • Page 8 2-stage cooking MEMORY CHECK AUTO MANUAL POWER Example 2: Stage 1: 5 minutes 30 seconds cooking time with 70% power.. COOK Stage 2: 3 minutes 10 seconds cooking time with 50% power. This will result in a continuous cooking time of 8 minutes and 40 seconds.

  • Page 9: Programmed Cooking

    Programmed cooking MEMORY CHECK AUTO MANUAL POWER The programming function is automatically deactivated on connecting the microwave oven to the mains. COOK The pads "Memory"(G),"Test"(H) und "Acoustic signal level" (I) are inoperative. To activate the programme 1. Close the door and press the Stop pad (D) twice. 2.
  • Page 10 Example 2: MEMORY CHECK AUTO MANUAL POWER Set a 2-stage cooking programme in Memory space 2. Stage 1: 5 minutes 30 seconds cooking time using 100% COOK Power. Stage 2: 3 minutes 10 seconds cooking time using 10% power. Active the programming function. Press the Programme pad (B), in the present instance:"2".
  • Page 11 x2 / x3 programmed cooking MEMORY CHECK AUTO MANUAL POWER The multiplication pads "x2" and "x3" are used when the quantity of food placed in the oven exceeds twice or three- COOK times the portion specified in the programmed pads. Open the door.
  • Page 12 Checking the frequency of usage MEMORY CHECK AUTO MANUAL POWER This function allows you to determine: how often the appliance is used COOK the number of manual cooking processes how often the individual memory spaces are used. Retrieving the counter reading Activate the programme function.

  • Page 13: Setting The Acoustic Signal

    Setting the acoustic signal MEMORY CHECK AUTO MANUAL POWER Activate the programming function. Press Stop pad (D). COOK Press "sound level" (I) until the required acoustic level is obtained. Press Memory pad (G). Cancel the programming function. Cleaning Always remove the mains plug before cleaning! Remove any spilt food immediately using a damp sponge or cloth which has been dipped in a mild detergent.
  • Page 15 6 WIRING DIAGRAM OVEN...
  • Page 16 7 WIRING DIAGRAM RELAY BOARD...
  • Page 17 8) DESCRIPTION OF OPERATION INCLUDING DOOR SWITCH OPERATION a) Sequence of circuit. Refer to wiring diagrams to follow sequence of operation. When switched supply is connected 240V enters via special 15A fuse through the noise filter/suppressor terminal both magnetron thermal cut outs (120°C), cavity thermal cut out (160°C) to terminal CN1 on main PCB assembly.
  • Page 18 8) DESCRIPTION OF OPERATION INCLUDING DOOR SWITCH OPERATION c) High Voltage Circuit Operation Each microwave circuit consists of a magnetron and a voltage doubler circuit. The voltage doubler consists of a special step-up transformer, a capacitor and a diode. See diagram for an explanation of how the doubler works.
  • Page 19 9) TESTING COMPONENTS/FAULT FINDING WARNING NO HIGH VOLTAGE MEASUREMENTS SHOULD BE ATTEMPTED DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TESTING PROCEDURES ARE CARRIED OUT. THE FOLLOWING TESTS ARE ALL CARRIED OUT WITH THE OVEN ISOLATED FROM MAINS SUPPLY. 1) Membrane Key Assembly Refer to wiring diagram (Section 7, 2).

  • Page 20: Blower Motor Assembly

    9) TESTING COMPONENTS/FAULT FINDING 5) Magnetron Tool 500V megger or multimeter R9V a) Disconnect both magnetron terminals. b) Test continuity between F & FA terminals (heater) using multimeter/megger. Correct reading is less than 1Ω. c) Test insulation resistance either terminal to earth (magnetron body) correct reading infinity.

  • Page 21: Power Testing

    10) Power Testing This machine is rated with a power output test to comply with BSEN60335 and IEC60705. Due to the complexity of the test method it is impractical to carry out this test in the ovens normal working environment. As a simple test to assess the correct working of the machine It is sufficient to proceed as follows.
  • Page 22 11 EXPLODED VIEW...
  • Page 23 03 VC120 009 JHNDM0164V2F0Y- DOOR OUTER LATCH HOOK LATCH HOOK INTER TOUCH PAD CONTROL UNIT C.P.U START OVEN CAVITY...
  • Page 24 AIR DUCT THERMISTOR BOARD TEMPERATIRE FUSE BO AIR DUCT NOISE FILTER FRAME OF FILTER CAPACITOR FRAME UPPER LOWER LEVEL H.V.CAPACITOR CUSHION FUSE HOLDER RESISTOR DISPLAY...
  • Page 25 NOISE CAPACITOR VB400 002 SPAKC05384V2R0-- PACKING CASE VB400 002 TINSE1867V2-0-- OPERATION MANUAL VB100 006 LHLDK0031V2-0-- STOP CORD VB100 011 LX-LZ0007V2N0-- RIVET VB100 021 PISLM0012V2-0-- STIRRER STOPER VB100 064 LBSH-0018V2-0-- FUSE COVER VC190 003 QTIPW1035-1162B HIGH VLOTAGE WIRING 98 VC190 004 QTIPW1035-1163B HIGH VLOTAGE WIRING VC190 005 QTIPW1035-1164-...

This manual is also suitable for:

180t

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