Garland 7000 User's Manual
Contents
1. Garland SERVICE MANUAL MODUL LINE BUILT IN INDUCTION COOKERS 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 01753 485900 Fax 01753 485901 Phone 570 636 1000 Phone 905 624 0260 Fax 570 636 3903 Fax 905 624 5669 Part 4526029 02 22 11 O 2008 Garland Commercial Industries Inc Page 2 Part 4526029 02 22 11 TABLE OF CONTENTS SECTION 1 REQUIREMENTS 2 ccc cee ccc ccc cee cece e cece eee nennen nun 4 Authorized Personnel 00 ccc cece ence a NNN 4 Operation Instructions Knowledge assez 4 Knowledge Of Electronic GA ERA 4 SECTION 2 SYSTEM DESCRIPTION cece cece cree ccc e eee ee rro 5 Hiele aeta 5 Voltage Supply vaasa asa ne en en een ne een ea 6 Power BOSA u en a il ae nike 6 Control UN ne EEE 6 Display ade E EEE EEE E EEA RE ESO EA Eee 6 Error Messages unse Eure EE en Aeon des green 7 SECTION 3 INITIAL OPERATION cccccc cece ccc cecccecescceccsceecceees 8 FURCHOM CONTO ee ne ee bie 8 Display oss area ae GUE GE REO EEE EEE Ed EEE ae 8 Pan Detection enim ore 8 POWER anar aca Dc Dis ria acacia aa 8 Fans A A eee EEEa rr guren 8 SECTION 4 TROUBLE SHOOTING AND REPAIRS ccccecceccccccecceces 9 Trouble Shostin2. M220 e Disconnect ST2 on CPU circuit board and measure resistance between brown and blue Measured value 2000hm lt R lt 2kOhm Replace rectifier circuit board M240 e Use suitable pan material e Test with a pan with a diameter of 24cm 4 75 PO M241 Disconnect mains power supply e Visually inspect blackened cables components or strip conductors e Transistor module measure internal diodes UF 0 4V Po Rectifier measure internal diodes UF 0 5V Control trafo measure electric voltage Check power supply CPU print 24V CPU circuit board ST1 1 and ST1 4 24V 1V M251 Check power switch on operational control Part 4526029 02 22 11 Page 13 Adjustments This induction unit has been correctly adjusted by the manufacturer Any adjustments have to be made with caution Please pay attention to the following points 1 Note the original position of the poti s remember the number of turns you make Switch Position 2 Errors can occur after wrong adjustments 3 Only small corrections can be made with adjustments Generator Type The generator type is adjusted in the binary code with the DIP switches 5 to 8 on the CPU circuit board Switch Power Summary software and generator type The following list shows the number of types of the various generators Please note the positions of the power switches from the above table Tvpe DIP IE Switch setting Pan detection The potentiomete
3. Coil current Phases current Performance rate Poti Heat sink temperature IGBT Page 6 Coil temperature Ambient temperature The power switch IGBT the fan as well as the display are managed in response to these factors Display Two elements are used for this display 1 LED group LED1 LED8 on the CPU Circuit board C018 2 External lamps 24V maximum 5 pieces The five external lamps are connected with the five LED s LED1 LED5 Please distinguish between operation lamps and error lamps The operation lamp shows what kind of operation for the respective field Lamp out Field is cut out Lamp flashes briefly Pan detection pan is searched Lamp flashes an error code Messages table Error message see Error Lamp continuously on Power on The error lamp indicates an error function LED1 to LEDA lead to external lamps on the outside they are used as operational lamps or as error lamps depending on the generator type If an operation lamp or an error lamp is shared by two fields for example the surface covering this induction type the display can be overwritten from another field As far as the error code display is concerned the lower field has priority LED5 lead to the outside for an external lamp also This is the general error lamp for all fields all the time In an error LED6 to LED8 show the error code but only until error code 7 If this happens in some errors the lower field and the lowe
4. O Mid f Reece OOOO 0 O mo Satira EO A AA Measure heat sink temperature sensor resistor Disconnect temperature sensor At 25 Celsius 77 F resistor will read 20kOhm At 70 Celsius 158 F resistor will read 3 5kOhm Check short circuit to case Foratest short out the sensor with a 20kOhm fixed resistor M40 e Switch off unit cool down and switch on again Use a pan with Switch off field cold water Page 12 Part 4526029 02 22 11 Measure the resistance of coil temperature sensor resistor Disconnect sensing element at 25 Celsius 77 F resistor will read 1kOhm at 180 Celsius 356 F resistor will read 3 5kOhm M41 Resistor is higher on a higher temperature PTC resistor e Replace sensor with a value less than 9000hm e Foratest Short out the sensor with a 1kOhm fixed RESISTER M50 e Measure operational control or main power control switch with Disconnect operational control potentiometer Potentiometer is 10kOhm and linear Poti e Onlevel 0 resistor 0 Ohm e On maximum level resistance 10kOhm Resistor is proportional linear to swing angle M60 Measure temperature inside the case Admissible ambient temperature 0 C 32 F to appr 70 C 158 F Check point is on the CPU circuit board M100 e Check connection cable for serial operational control and CPU circuit board M101 Change serial operational control M200 Check mains cable perhaps one phase missing e Check the building fuses
5. Block Schematic filter coil heatsink coil PE L1 L2 L3 Page 5 supply 24VDC Part 4526029 02 22 11 Voltage Supply The power board voltage supply is wired with the power contactor On starting the generator voltage is supplied to the power board The transformer is connected directly atthe entrance of the power supply The transformer supplies two different voltages 230VAC for the power contactor and the fan as well as 23VAC for the low voltage supply The 23VAC are changed on the circuit board C026 to 24VDC The following components are supplied with 24VDC CPU circuit board C018 IGBT C026 Fan relay C014 External lamps Power Board As already stated the power board is supplied by the power contactor The mains current is measured by a current transformer directly at the entrance of the 3 phases rectifier After the rectifier there is a direct voltage of 300V The inductance that follows filters high frequency EU current At the following power switch IGBT an alternating current of approximately 20kHz is generated This alternating current coil current is transferred to the induction coil At the exit of the circuit board C026 the coil current is measured by a current transformer Control unit The control unit is the heart of the generator This is the CPU circuit board C018 with an integrated microprocessor which manages the whole control system The following data are measured
6. Cleanfan Rectifier circuite board Replace rectifier circuit defective board U14 GRAU poang M14 RTE CPU circuit board L AA TN K ode 5 S05 a U50 M50 Check operational control L Line break defective Legend W Who should complete Measure E End user L Supplier Part 4526029 02 22 11 Page 9 I problem Posikte NTE E u See Normal operation nigh temperature joe nn 7 Cooking platform 9 Check coil sensing U70 Coil temperature ae element element e E circuit aae e a PO O IE FO AEA N u u NNN n 10 S10 Communicationerror U100 Line break M100 Check connection Serial interface Operational control U14 boda M14 Replace CPU circuit board r E ee un AE MN N NNN bd Legend W Who should complete Measure E Enduser L Supplier Page 10 Part 4526029 02 22 11 Additional Errors Problem Possiblecawse 2 Measure code no m Psd Operation lamp is continuously ON Cooking platform does not GGA TN S20 gP U10 Non induction type pan cooking platform and with heat enough an induction type pan connection U12 Power board defective M12 BEEKO E E board defective Coaking platiorn Operational control 21 continuously on bek M50 Check operational control defective maximum power U14 GU Board M14 Replace CPU circuit board L defective Power circuit board Replace power circuit U12 M12 defective board 101 AE C
7. eated for every coil Page 8 Power Place an induction ready pan with a diameter of 22 24cm 8 5 9 5 onto the coil Measure the generator power at maximum level This should be at the nominal power tolerance 10 This procedure must be repeated for every coil Fan Place various pans on the coils and start the generator on the highest level After a few minutes the fan should start The fan is controlled by the temperature and starts when the heat sink temperature is about 50 C 122 F Part 4526029 02 22 11 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 PossibleCause eae ee No Normal operation Pf ut Coil defective Check coil U12 Power circuit board Replace power circuit d ga No coil current Compare on another U10 Non induction type pan M10 cooking platform and with Hardware overcurrent N i an induction type pan Software overcurrent High coil current t on J U10 Non induction type pan M10 cooking platform and with an induction type pan Power circuit board Replace power circuit U12 M12 defective board U13 Error on DIP Switch M13 Check DIP Switch adjustment on CPU adjustment U14 GEU GO M14 E CPU circuit board A S03 Temperature heat sink gt M30 Clear air transport as U31 Dirty fan heatsink M31
8. g nennen aneinander 9 El FOP gaa ANKA 9 deiei diela Si Neue GA 11 Repair OF Problems es een ia 12 AdJUS MEN Sci a een 14 Generator Type ae is a taa 14 Pan detecta ninia irradia da iria 14 BAN Pescar ie lar 14 Repainby Garlanescas dug aveen dada abr 14 SECTION 5 APPENDIX u nn 15 Internall onneetionsa ae a 15 EZA OSAERAN 15 Sed daidala EAEE 16 Power Circuit Board CO26 savusta aa a ne da 17 Transformers asian a kan naar 18 Rectifier And Transistor Module 22222csesseeeeeeeeenenesneneneneneneneseesrene nennen 18 Part 4526029 02 22 11 Page 3 SECTION 1 REQUIREMENTS Authorized Personnel The operator has to insure that all installation maintenance and inspection work is carried out by authorized and qualified personnel who has done a training course at Inducs Ltd Operation Instructions Knowledge In order to do service work on an induction generator the operator must have an extended knowledge of the Operating Instructions Page 4 Knowledge Of Electronic Systems The service and maintenance operator must have knowledge of the following components Diodes Z Diodes Zener Diodes Rectifiers 2phases and 3phases Power transistor IGBT The operator must know how to measure the electric potential current and resistors by means of a digital multimeter He also has to know how to check diodes with a diodes tester Part 4526029 02 22 11 SECTION 2 SYSTEM DESCRIPTION
9. heck pan detection Empty cooking platform U220 Pan detection defective M220 e on metallic objects are 523 heated on the cooking U220 Pan detection defective M220 Check pan detection platform Operation lamp flashes Cooking platform does not Pan too small al U200 1 phase is missing M200 GSK mains cable u U220 Pan detection defective M220 C Check pan detection EA EA Legend W Who should complete nu E Enduser L eee Part 4526029 02 22 11 Page 11 I problem I TE E ST IK m IK Operation lamp and error lamp OFF Unit does not heat no Building s power fuses S25 reaction contactor does U250 defective error on Check mains supply not work electrical transmission U251 GNSS M251 Check operational control L control S26 Building fuses plow when U241 Short circuit in generator M241 RURA piace L is switched on de 527 platforms U271 Generator defective M241 m not heat 528 not heat no biza on DIP a N rr DIP Switch reaction no contactor adjustment on CPU adjustment Legend W Who should complete Measure E Enduser L Supplier Repair Of Problems Compare on another cooking platform and with an induction Check ifthe pan is appropriate to type pan induction cooking or not use a magnet Check connection of coil Check coil on line break Coil overheated brown color change TEZ Change power reload ma Check DP Snitch adjustment aerea
10. mp sensor optinal D9 lko D101 DIP Switch 1 2 3 4 connection 5 to c026 6 7 8 1 2 connection 3 to c014 4 1 lamp 1 2 lamp 2 3 lamp 3 4 lamp 4 5 lamp 5 6 7 8 24VDC Part 4526029 02 22 11 Power Circuit Board C026 View components side IGBT pre drive power adjustment field 1 Connection with c018 logic board current measure signal POT1 4 und ST5 optional power adjustment field 2 IGBT pre drive Coil connection field 1 Part 4526029 02 22 11 Coil connection field 2 Page 17 Transformer supply transformer for logic board contactor ignition and fan Rectifier And Transistor Module O O L3 12 11 OOO 2 3 1 solder side view rectifier board Item 1 rectifier Page 18 230VAC outlet fan 230VAC outlet contactor ignition mains supply voltage 208V 230V 400V AC 23VAC outlet logic supply C1 O C2 E1 O e C2 E1 O lt E2 solder side view power board Item 2 transistormodul IGBT Part 4526029 02 22 11 Part 4526029 02 22 11 Page 19 Garland
11. r error code have priority Part 4526029 02 22 11 Error Messages P lt ee zitea on oi No coi current overdrive caused by non induction pan on 02 High coi current overdrive by non induction pan On 04 Temperature heating area coil too high on on os Potentiometer defected wiring disconnected On on 06 Temperatureinside the unit too high On sa es SSS gt 10 Communication error serialinterface EA A gt tk k lil1 s 18 CARE Estel gt gt udi 1 1 Theinduction unit can only be started again if the fault has been acknowledged turn power rotary knob off 2 The induction unit continues working but the temperature of the cooking platform is not controlled anymore Part 4526029 02 22 11 Page 7 SECTION 3 INITIAL OPERATION Function control To check the function controls the induction generator must be totally connected Display 1 The external lamps must be checked 2 The operation lamp flashes if a coil is not used Searching function 3 This procedure must be repeated for every coil Pan Detection To check the pan detection two pans are needed one with a diameter of 8cm 3 and the other with a diameter of 12cm 4 75 Only the pan with a diameter of 12cm 4 75 should be detected A coil should not start operation when it is not being used This procedure must be rep
12. r on the rectifier circuit board is used to adjust the pan detection Page 14 Turn clockwise acceptance of smaller pans Turn counterclockwise only bigger pans are accepted Power Only one potentiometer per field is available on the power circuit board to adjust the power Turn clockwise less power Turn counterclockwise more power Repair by Garland Ifthe generator has to be repaired by the manufacturer please enclose an exact description of the error If possible use the original package for the return Ifit isn t available do not use porous material for wrapping like styropor This could enter the unit and the electronic parts and is difficult to remove Part 4526029 02 22 11 SECTION 5 APPENDIX Internal Connections Rectifier Circuit Board C014 View solder side poti for pan detector 9 10 11 12 230V Venti Part 4526029 02 22 11 Page 15 CPU Circuit Board C018 View components side coil sensor 1k heatsink sensor 20k current meas signal power control poti 10k RS485 optional 3 Poti optional Page 16 field 4 8 field 4 7 field 3 6 field 3 5 field 2 4 field 2 3 field 1 2 field 1 1 field 4 8 field 4 7 field 3 6 field 3 5 field 3 4 field 2 3 field 1 2 field 1 1 field 4 8 field 4 7 field 3 6 field 3 5 field 2 4 field 2 3 field 1 2 field 1 1 field 4 8 field 4 7 field 3 6 field 3 5 field 2 4 field 2 3 field 1 2 field 1 1 external te
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