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PROCEDURE TO ENTER SERVICE MODE ....................................................... 36
PROCEDURE TO TOGGLE BETWEEN NO ID AND OPERATOR ID MODE ........................ 36
PROCEDURE TO TOGGLE BETWEEN 9 AND 99 PROGRAMS .................................... 36
SERVICE MODE PARAMETERS .................................................................. 36
DEMO MODE (KA7E ONLY) ........................................................................... 41
RETURN TO NORMAL MODE ..................................................................... 43
TEMPERATURE SENSOR TEST ...................................................................... 43
HEATING ELEMENT TEST ............................................................................ 44
PUMP, K3 RELAY COIL TESTS ....................................................................... 44
CONTROLS CALIBRATION ........................................................................... 44
CALIBRATION PROCEDURE ..................................................................... 44
ELECTRICAL OPERATION ................................................................................ 46
COMPONENT FUNCTION ............................................................................ 46
SEQUENCE OF OPERATION ......................................................................... 46
PROGRAMMED COOKING ....................................................................... 46
WASHING CYCLE SEQUENCE OF OPERATIONS ................................................ 47
USER PRESSES CLEAN BUTTON ................................................................ 47
CONTROLS EXPLANATION .......................................................................... 48
MODEL KA7E ..................................................................................... 48
MODEL KA7EM ................................................................................... 49
COMPONENT LOCATIONS ........................................................................... 50
MODEL KA7E ..................................................................................... 50
MODEL KA7EM ................................................................................... 52
WIRING DIAGRAMS .................................................................................. 54
KA7E - COMPONENT CONNECTIONS ............................................................ 54
KA7EM - COMPONENT CONNECTIONS .......................................................... 55
POWER CONNECTION ........................................................................... 56
SCHEMATIC DIAGRAMS ............................................................................. 57
MODEL KA7E ..................................................................................... 57
MODEL KA7EM ................................................................................... 59
PLUMBING DIAGRAMS (KA7E ONLY) ................................................................ 62
TROUBLESHOOTING ..................................................................................... 64
TROUBLESHOOTING ................................................................................. 64
TROUBLESHOOT ROTOR COMPONENTS ........................................................... 67
APPENDIX ................................................................................................ 69
REVERSING CONTROLS ............................................................................. 69
KA SERIES ELECTRIC ROTARY OVENS
© HOBART SERVICE 2012
Page 3 of 72 F25294 Rev. A (0412)