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N
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SERVICE MANUAL
MODUL-LINE
BUILT-IN INDUCTION COOKERS
C CM
86037
MODEL: IN/MO 7000
GARLAND COMMERCIAL INDUSTRIES GARLAND COMMERCIAL RANGES, LTD. Enodis UK LTD.
185 East South Street 1177 Kamato Road, Mississauga, Ontario L4W 1X4 5E Langley Business Centre
Freeland, Pennsylvania 18224 CANADA Station Road, Langley SL3 8DS Great Britain
Phone: (570) 636-1000 Phone: 905-624-0260 Phone: 01753 485900
Fax: (570) 636-3903 Fax: 905-624-5669 Fax: 01753 485901
Part # 4526029 (02/22/11) © 20
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Page 2 Part # 4526029 (02/22/11)
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TABLE OF CONTENTS SECTION 1 – REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Authorized Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 “Operation Instructions“ Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Knowledge Of El
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SECTION 1 – REQUIREMENTS Authorized Personnel Knowledge Of Electronic Systems The operator has to insure that all installation, maintenance The service- and maintenance operator must have and inspection work is carried out by authorized and knowledge of the following components : qualifi ed personnel who has done a training course at Inducs • Diodes Ltd. • Z-Diodes (Zener-Diodes) “Operation Instructions“ Knowledge • Rectifi ers (2phases and 3phases) In order to do service work on an inductio
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SECTION 2 – SYSTEM DESCRIPTION Block Schematic c026 230VAC 24VDC ST1 23VAC 208VAC 300VDC L1,L2,L3 filter coil c014 230VAC PE 1x,2x,3x,4 x LED ST1 24VDC ST5 ST2/3,4 4 ST4 8 5 ST8 CPU 4 heatsink ST6 c014 4 ST2/1,2 coil ST7 M ST1/1,4 c018 supply Relay fan 24VDC 230VAC 24VDC Part # 4526029 (02/22/11) Page 5
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• Coil temperature Voltage Supply • Ambient temperature The power board voltage supply is wired with the power contactor. On starting the generator, voltage is supplied to The power switch (IGBT), the fan as well as the display are the power board. The transformer is connected directly at the managed in response to these factors. entrance of the power supply. The transformer supplies two diff erent voltages: 230VAC for the power contactor and the Display fan as well as 23VAC for the low vo
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Error Messages LED 8 LED 7 LED 6 Code Signifi cation NOTE ———— No error, normal function — — On 01 No coil current, overdrive caused by non induction pan — On — 02 High coil current, overdrive by non induction pan — On On 03 Temperature heat sink too high On — — 04 Temperature heating area (coil) too high 1 On — On 05 Potentiometer defected , wiring disconnected On On — 06 Temperature inside the unit too high On On On 07 Heating area – coil sensor short circuit 2 ——— 08 ——— 09 — — — 10 Communic
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SECTION 3 – INITIAL OPERATION Function control Power To check the function controls, the induction generator must Place an “induction ready” pan with a diameter of 22-24cm be totally connected. (8.5”-9.5”) onto the coil. Measure the generator power at maximum level. This should be at the nominal power Display (tolerance +/- 10%). This procedure must be repeated for every coil. 1. The external lamps must be checked. Fan 2. The operation lamp fl ashes if a coil is not used (Searching function
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SECTION 4 – TROUBLE SHOOTING AND REPAIRS This section includes a list of the main errors, their causes and the respective steps to correct. Trouble Shooting Error-Code Problem Possible Cause Measure Code No. No No W No Normal operation Compare on another No coil current 1 S01 U10 Non induction type pan M10 cooking platform and with E Hardware overcurrent an induction type pan U11 Coil defective M11 Check coil L Power circuit board Replace power circuit U12 M12 L defective board Compare on a
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Problem Possible Cause Measure Code No. No No W No Normal operation Ambient temperature too Check ambient 6 S06 Inside temperature U60 M60 L high temperature CPU-circuit board U14 M14 Change CPU-circuit board L defective Sensing element Cooking platform Check coil sensing 7 S07 U70 Coil temperature M41 L Sensing element element Short circuit 8 S08 9 S09 Communication error 10 S10 U100 Line break M100 Check connection L (Serial interface) Operational control U101 M101 Replace operation L de
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Additional Errors Problem Possible Cause Measure Code No. No No W No Operation lamp is continuously “ON” Compare on another Cooking platform does not S20 U10 Non induction type pan M10 cooking platform and with E heat enough an induction type pan Check mains cable U200 1 phase is missing M200 L connection Replace power circuit U12 Power board defective M12 L board CPU-circuit board U14 M14 Replace CPU-circuit board L defective Cooking platform Operational control S21 continuously on U50 M
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Problem Possible Cause Measure Code No. No No W No. Operation lamp and error lamp “OFF” Unit does not heat, no Building’s power fuses S25 reaction, contactor does U250 defective, error on M201 Check mains supply L not work electrical transmission Error on operational U251 M251 Check operational control L control Building fuses blow when Repair or replace S26 U241 Short circuit in generator M241 L unit is switched on generator Some cooking platforms Repair or replace S27 U271 Generator defect
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Measure Activity Comment M41 • Measure the resistance of coil temperature sensor resistor Disconnect sensing element at 25º Celsius (77º F) resistor will read 1kOhm at 180º Celsius (356ºF) resistor will read 3,5kOhm • Resistor is higher on a higher temperature (PTC-resistor) • Replace sensor with a value less than 900Ohm • For a test: Short-out the sensor with a 1kOhm fi xed RESISTER M50 • Measure operational control or main power control switch with Disconnect operational control potentiometer
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2. Errors can occur after wrong adjustments Adjustments 3. Only small corrections can be made with adjustments This induction unit has been correctly adjusted by the manufacturer. Any adjustments have to be made with Generator Type caution. Please pay attention to the following points: The generator type is adjusted in the binary code with the 1. Note the original position of the poti’s: remember the DIP-switches 5 to 8 on the CPU-circuit board number of turns you make. Switch Position DIP-S
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SECTION 5 – APPENDIX Internal Connections Rectifi er Circuit Board C014 View solder side poti for pan detector 9 10 11 12 230V Venti Part # 4526029 (02/22/11) Page 15
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CPU-Circuit Board C018 View components side external temp'sensor optinal 1 2 field 4(8 field 4(7 field 3(6 coil- field 3(5 sensor field 2(4 1k field 2(3 field 1(2 field 1(1 field 4(8 field 4(7 field 3(6 heatsink- field 3(5 sensor field 3(4 20k field 2(3 field 1(2 field 1(1 field 4(8 field 4(7 DIP-Switch field 3(6 current- field 3(5 meas. field 2(4 signal field 2(3 field 1(2 1) field 1(1 2) 3) field 4(8 4) connection field 4(7 5) to c026 field 3(6 6) power- field 3(5 7) control field 2(4 8) (pot
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Power Circuit Board C026 View components side power Connection current power adjustment with measure adjustment field 1 c018 – signal field 2 IGBT pre IGBT pre POT1-4 und ST5 logic board drive optional drive Coil connection Coil connection field 1 field 2 Part # 4526029 (02/22/11) Page 17
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8 7 6 5 4 3 2 1 Transformer supply transformer for logic board contactor ignition 230VAC outlet (fan) and fan 230VAC outlet (contactor ignition) mains supply voltage ( 208V/ 230V / 400V AC) 23VAC outlet (logic supply) Rectifi er And Transistor Module + C1 - + L3 C2/E1 L2 C2/E1 E2 L1 C1 3 2 1 - E2 solder side view solder side view rectifier board power board Item . 1: rectifier Item 2: transistormodul IGBT Page 18 Part # 4526029 (02/22/11)
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