Blodgett DFG-100 Repair Manual

DFGĆ100 AND DFGĆ200 SERIESCONVECTION OVENSERVICE AND REPAIR MANUALBLODGETT OVEN COMPANYwww.blodgett.com44 Lakeside Avenue, Burlington, Vermont 05401 U

OPERATION2-2123135768a8b9411410112FIGURE 5

DFGĆ100 and DFGĆ2002-3SOLID STATE COOK ONLYSEQUENCE OF OPERATION - DIAGRAM P/N 20027 REV AComponent ReferenceNOTE: Refer to FIGURE 6 page 2-4 for

OPERATION2-441639671311810125141512FIGURE 6

DFGĆ100 and DFGĆ2002-5SOLID STATE COOK & HOLDSEQUENCE OF OPERATION - DIAGRAM P/N 19604 REV AComponent ReferenceNOTE: Refer to FIGURE 7 page 2-7

OPERATION2-67. If the mode selector switch (1) is set to theCook & Hold position a circuit is made in theswitch between L1, 1 and 4. All

DFGĆ100 and DFGĆ2002-712314136164515b15a13121171018178219FIGURE 7

OPERATION2-8SOLID STATE DIGITALSEQUENCE OF OPERATION - DIAGRAM P/N 31981 REV FNOTE: Refer to FIGURE 8 page 2-9 for compoĆnent locations.Component

DFGĆ100 and DFGĆ2002-915113267810A910B4FIGURE 8

OPERATION2-10SEQUENCE OF OPERATION - DIAGRAM P/N 30073 REV FNOTE: Refer to FIGURE 9 page 2-11 for compoĆnent locations.Component Reference1. MODE SWIT

DFGĆ100 and DFGĆ2002-11261171211910a10b8543FIGURE 9

TABLE OF CONTENTSi1. INTRODUCTIONOven Specifications 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION2-12FAN DELAY WITH PULSE PLUSSEQUENCE OF OPERATION - DRAWING P/N 20029 REV AComponent ReferenceNOTE: Refer to FIGURE 10 page 2-14 for compoĆn

DFGĆ100 and DFGĆ2002-138. If time has been set on the fan delay timer (2),a circuit is made between terminals 1 and 2 alĆlowing voltage to go to termi

OPERATION2-14114815135612B12A1043112791FIGURE 10

DFGĆ100 and DFGĆ2002-15HUMIDAIRESEQUENCE OF OPERATION - DRAWING P/N 18486 REV HComponent ReferenceNOTE: Refer to FIGURE 11 page 2-17 for compoĆnent lo

OPERATION2-166. After the ignition control module (9) has comĆpleted a diagnostics and all functions checkout, 24VAC is sent to the pilot valve

DFGĆ100 and DFGĆ2002-17121036192015161298511b11a14137418117FIGURE 11

OPERATION2-18INTELLIPLUS WITH CHAIN EVENT CONTROLSEQUENCE OF OPERATION - DRAWING P/N 21846 REV DComponent ReferenceNOTE: Refer to FIGURE 12 page 2-19

DFGĆ100 and DFGĆ2002-1911421341171810a10b59312b6112aFIGURE 12

OPERATION2-20INTELLITOUCHSEQUENCE OF OPERATION - DRAWING P/N 19465 REV BComponent ReferenceNOTE: Refer to FIGURE 13 page 2-21 for compoĆnent locations

DFGĆ100 and DFGĆ2002-21198743127a1051121FIGURE 13

TABLE OF CONTENTSiiDeflector Assembly 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION2-22INTELLITOUCH IISEQUENCE OF OPERATION - DRAWING P/N 31173 REV CComponent ReferenceNOTE: Refer to FIGURE 14 page 2-23 for compoĆnent locati

DFGĆ100 and DFGĆ2002-23123841563a11910a10b72aFIGURE 14

CALIBRATION ANDADJUSTMENTCHAPTER 3

DFGĆ100 and DFGĆ2003-1DOORSThe DFGĆ100 and DFGĆ200 ovens feature doubleside mounted doors which operate simultaneouslyby means of a chain and tur

CALIBRATION AND ADJUSTMENT3-2DOOR BLOWER SWITCHThe door activated blower switch should be adĆjusted so the doors are about 1Ć1/2" (4 cm) f

DFGĆ100 and DFGĆ2003-3CALIBRATING THE THERMOSTATBulb and Capillary Style Thermostat1. Loosen the set screws in the thermostat knob.Pull the knob forwa

CALIBRATION AND ADJUSTMENT3-4BURNERSCheck the rating plate for proper orifice size andcorrect pressure regulator for the type of gassupplied. I

DFGĆ100 and DFGĆ2003-5SOLID STATE MANUAL1. Place a pyrometer in the center of the oven.2. Turn the mode selector switch to cook.3. Turn the thermostat

CALIBRATION AND ADJUSTMENT3-6SELECTOR SWITCH CALIBRATION1. Place a pyrometer in the center of the oven.2. Turn the mode selector switch to cook.3. Set

DFGĆ100 and DFGĆ2003-7INTELLITOUCH CONTROL SECOND LEVEL PROGRAMMINGTo access 2nd level programming1. Turn the oven off.2. Locate the 3 pin header o

INTRODUCTIONCHAPTER 1

CALIBRATION AND ADJUSTMENT3-8SOLID STATE DIGITAL SECOND LEVEL PROGRAMMINGNOTE: Refer to page NO TAG for illustration ofcontrol.To Initiate Prog

DFGĆ100 and DFGĆ2003-9INTELLITOUCH II SECOND LEVEL PROGRAMMINGCOMPUTERS WITH ON/OFF KEY IN CONTROL1. Place the control in OFF mode.2. Press the CLEAR

CALIBRATION AND ADJUSTMENT3-10INTELLIPLUS SECOND LEVEL PROGRAMMINGNOTE: Time must be zeroed out in order to perĆform the following functions.SETTING A

DFGĆ100 and DFGĆ2003-11BLODGETT IQ2T CONTROL FACTORY LEVEL PROGRAMMINGEntering the programming mode1. Press the program key. The top display readsCodE

PARTS REPLACEMENTCHAPTER 4

REMOVAL AND REPLACEMENT OF PARTS4-1ACCESS PANELS AND DOORSWARNINGBefore performing any maintenance orreplacing any component on this unit,dis

DFGĆ100/DFGĆ2004-2PERIMETER DOOR GASKET1. Remove gasket screws.2. Remove all door gaskets and top and bottomtrim pieces.NOTE: Side trim pieces remain

REMOVAL AND REPLACEMENT OF PARTS4-3OVEN DOOR1. Open the door. Remove the handle from theleft hand door.2. Remove three (3) machine screws loca

DFGĆ100/DFGĆ2004-4LOWER DOOR HINGE AND SPROCKETASSEMBLYFor models manufactured prior to May 1986:1. Remove the door from the oven.2. Remove the rollĆ

REMOVAL AND REPLACEMENT OF PARTS4-5MOTOR AND BLOWER ASSEMBLYBLOWER WHEELBlower Wheel with Build On Wheel Puller1. Remove the racks and rack supports.2

DFGĆ100 and DFGĆ2001-1OVEN SPECIFICATIONSVENTILATION REQUIREMENTSCanopy Type Exhaust HoodThe preferred method of ventilation is the use of amechanical

DFGĆ100/DFGĆ2004-6BURNER AND DEFLECTOR ASSEMBLIESMANIFOLD AND BURNER ORIFICES1. Remove the combustion compartment cover.2. Remove the brass compres

REMOVAL AND REPLACEMENT OF PARTS4-7ELECTRIC IGNITER (GLOW COIL) AND PLUMBING COMPONENTSELECTRIC IGNITERWARNINGThe electric igniter is extremely b

DFGĆ100/DFGĆ2004-8GAS PRESSURE REGULATORFor models manufactured prior to August 1984:1. Remove the combustion compartment cover.2. Remove the control

REMOVAL AND REPLACEMENT OF PARTS4-9CONTROL STACK ASSEMBLYFor models manufactured between August1984 and January 1986:1. Remove the combustion comp

DFGĆ100/DFGĆ2004-10INTERMITTENT IGNITION DEVICE (IID) AND PLUMBING COMPONENTSFor units manufactured after January 1986WARNINGDisconnect electrical p

REMOVAL AND REPLACEMENT OF PARTS4-11CONTROL STACK ASSEMBLY1. Remove the combustion compartment cover.2. Remove the control compartment cover.3. Close

DFGĆ100/DFGĆ2004-12ELECTRICAL COMPONENTSNOTE: A test cord is available to allow removal ofthe control module from the oven while reĆtaining electrical

TROUBLESHOOTINGCHAPTER 5

DFGĆ100 and DFGĆ2005-1HEAT HSI SYSTEMPOSSIBLE CAUSE(S) SUGGESTED REMEDYSymptom #1 - Heat and motor do not operateD Oven not plugged in.D Doors are ope

TROUBLESHOOTING5-2POSSIBLE CAUSE(S) SUGGESTED REMEDYSymptom #3 - Heat system does not recover quicklyD Gas pressure not correct.D Oven out of calibrat

INTRODUCTION1-2GAS SPECIFICATIONSGAS CONNECTIONSDomestic and General Export installationsThe gas line should be large enough to accommoĆdate the peak

DFGĆ100 and DFGĆ2005-3FLOW DIAGRAMCheck centrifugal switchin convection motor, replacemotor if switch is defectiveIsconvection motoroperational?NoYesH

TROUBLESHOOTING5-4Yes YesIspilot lightigniting?YesNoReplace ignitioncontrol moduleIsignition controlsending a sparkto the pilotburner?ANoIs 24VACappl

DFGĆ100 and DFGĆ2005-5DISPLAY ERROR CODESINTELLITOUCHHELP the temperature setting exceeds the maxiĆmum setting of 550_F. This will be shown asan alter

TROUBLESHOOTING5-6PROBE RESISTANCE VS TEMPERATURESolid State Manual and Digital Controllers(probe P/N 18588)_F _C Ohms _F _C Ohms100 38 53029 310 155

DFGĆ100 and DFGĆ2005-7Intellitouch (probe P/N 20360) andBlodgett IQ Controllers (probe P/N 33074_F _C Ohms _F _C Ohms60 16 1059 235 113 142265 18 1067

DFGĆ100 and DFGĆ2001-3VENTILATIONCANOPY TYPE EXHAUST HOODOvens that are ordered for underĆhood venting aresupplied with a draft diverter. When supplie

OPERATIONCHAPTER 2

DFGĆ100 and DFGĆ2002-1MANUAL CONTROLS WITH ELECTROĆMECHANICAL THERMOSTATNOTE: The following instructions represent the most common controllers. For qu