Blodgett Combi BC14E Service And Repair Manual Download Page 1

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BLODGETT COMBI

www.blodgett.com

50 Lakeside Avenue, Box 586, Burlington, Vermont 05402 USA Telephone (800) 331-5842, (802) 860-3700 Fax: (802)864-0183

PN R10251 Rev A (1/02)

2002 --- Blodgett Combi

BC14E AND BC14G

COMBINATION OVEN STEAMER

SERVICE AND REPAIR MANUAL

Summary of Contents for Combi BC14E

Page 1: ...ett com 50 Lakeside Avenue Box 586 Burlington Vermont 05402 USA Telephone 800 331 5842 802 860 3700 Fax 802 864 0183 PN R10251 Rev A 1 02 E 2002 Blodgett Combi BC14E AND BC14G COMBINATION OVEN STEAMER SERVICE AND REPAIR MANUAL ...

Page 2: ... BC14G Hot Air Flow Chart 3 4 BC14G Steam Flow Chart Water Fill 3 5 BC14G Combi Flow Chart 3 6 BC14G On Demand Steam Flow Chart 3 7 BC14G Flush Flow Chart 3 8 BC14G Water Fill Meat Probe condensate cooling fan 3 9 BC14G Drain Assembly 3 10 BC14G Flue Assembly 3 11 BC14G Timer Settings 3 12 Section 4 BC14G Schematics BC14G 4 1 BC14G for CE 4 2 Section 5 Pre Site Visit Questions Troubleshooting Sequ...

Page 3: ... BC14E Steam Flow Chart 8 5 BC14E Combi Flow Chart 8 6 BC14E On Demand Flow Chart 8 7 BC14E Flush Flow Chart 8 8 BC14E Water Fill Meat Probe 8 9 BC14E Drain Assembly 8 10 BC14E Timer Settings 8 11 Section 9 BC14E Installation Installation Specifications 9 1 Oven Location and Leveling 9 2 Stacking 9 3 Plumbing Connections 9 4 Door Adjustments 9 5 ...

Page 4: ...BC14G INSTALLATION CHAPTER 1 ...

Page 5: ...ressure 30 PSI 207 kPa minimum 50 PSI 345 kPa maximum Water Connection 3 4 Hose Hot and Cold Water Water Regulator Setting Preset to 20 PSI 138 kPa Drainage Atmospheric Vented Drain Drain Connection 2 00 50 8mm Copper Avg Water Drain Temp Approximately 160_F 71_C TABLE 2 PLUMBING SPECIFICATIONS BC14GDS AA Water Water Pressure 30 PSI 207 kPa minimum 50 PSI 345 kPa maximum Water Connection 3 4 Hose ...

Page 6: ...onnector for all U S and Canadian installations TABLE 4 RATINGS GAS APPLIANCES BC14GDS AA Gas Type Gas Input Voltage Phase Amps Motor Natural 65 000 BTU Hr 208 240 1 15 1 2HP 208 240VAC 50 60 Hz 120 1 15 1 2HP 208 240VAC 50 60 Hz Propane 65 000 BTU Hr 208 240 1 15 1 2HP 208 240VAC 50 60 Hz 120 1 15 1 2HP 208 240VAC 50 60 Hz 3 4 FNPT connector for all U S and Canadian installations TABLE 5 GAS PRES...

Page 7: ...ded by the gas hose re straint If the oven needs to be moved fur ther from the wall the gas must first be turned off and disconnected from the oven before removing the restraint Reconnect the restraint after the oven has been re turned to its normal position Left Side Heat Shield Heat sources should not be near the air vents lo cated on the left hand side of the gas appliance Consult the factory f...

Page 8: ... sure all four sides are flush 4 Bolt the two appliances together using the bolts provided 5 Attach the flue vents as shown 6 Replace the drip pan 7 Connect the drain gas if applicable electrical and water Refer to page 1 5 NOTE An optional gas plumbing manifold may be purchased from Blodgett Combi Order part number R9570 An optional drain plumbing manifold may be purchased from Blodgett Combi Ord...

Page 9: ...he water restrictor installed will invalidate the war ranty The use of poor quality water will in validate the warranty Cold Water Water Connections Rear of Appliance Cold Water Hot Water Option 1 Option 2 FIGURE 2 DRAIN CONNECTION The waste drain assembly must be constructed of 2 inch copper and be atmospherically vented The venting must have a riser so the steam vents above the top of the oven I...

Page 10: ...top hinges touch and pivot Lift up the door slightly A Loosen the three allen head bolts on the bottom hinge attached to the oven B Tap the hinge in or out as needed Keep the hinges parallel as shown in FIGURE 4C C Tighten the three allen head bolts D Remove the screwdriver to lower the door Adjusting the Catch Adjust the catch as follows 1 In the top of the door handle is a round roller Swing the...

Page 11: ...nd must be readjusted FINE TUNING A DOOR GASKET Use the following procedure if the door shuts well in both hot air and steam but you still have a little steam leaking from the door gasket 1 Make a note where the steam is leaking 2 Take a tube of silicone and lay a bead out on a flat surface Let it dry 3 Tack the bead behind the door gasket with a couple of dabs of silicone This pushes the gasket o...

Page 12: ...OPERATION AND MAINTENANCE CHAPTER 2 ...

Page 13: ... cycle 4 STEAM ON DEMAND SWITCH used to ini tiate steam injection cycle 5 TIMER DIAL used to set desired cook time 6 FAN SPEED SWITCH used to select low or high speed 7 FLUSH DRAIN SWITCH used to flush drain the steam generator for decalcification The oven must be off and the steam generator must be below 160_F 71_C for this switch to work 8 FILL LAMP illuminated until the steam gen erator is fill...

Page 14: ...section Be sure the probe does not touch any bone and the tip is not in a fat pocket These conditions can cause inaccurate readings 1 Set the MODE SELECTOR Switch to the de sired function 2 Turn the MEAT PROBE Switch 1 to ON 3 To set the desired core temperature press and hold the BUTTON 4 on the MEAT PROBE CONTROL 2 Use the up arrow key 6 to increase the set point temperature Use the down arrow k...

Page 15: ...e deliming pump Oven Model Total Water Volume Water and Deliming Solution BC14E 23 qrts 8 qrts BC14G 13 qrts 4 qrts 5 Pour the proper amount of deliming chemical into the deliming pump reservoir 6 Now add the proper amount of water into the deliming pump 7 Attach the hose from the deliming pump to the deliming port 8 Slowly pump the deliming solution and water mixture into the appliance 9 Disconne...

Page 16: ...BC14G TROUBLESHOOTING CHAPTER 3 ...

Page 17: ... the motor See FIGURE 1 location J NO OPERATION WITH THE MODE SWITCH IN HOT AIR 1 Check power at terminal 12 on mode switch See FIGURE 1 location H If no power contin ue If power is 208V proceed to STEP 8 2 Check F3 oven high limit See FIGURE 1 loca tion B 3 Check the mode switch See FIGURE 1 4 Check the S2 door switch See FIGURE 1 location D 5 Check relay R5 See FIGURE 1 location E 6 Check timer ...

Page 18: ...button See FIGURE 5 location A 2 Check input and output to T3 solid state timing relay See FIGURE 5 location B 3 Check relay R202 coil and contacts See FIGURE 5 NO FLUSH DRAIN MODE MANUAL OR AUTO The T4 flush drain solid state timing relay is ener gized when the P11 flush disable snap disk is closed Both of these parameters must be met for the manual flush drain switch to work NOTE When the P11 fl...

Page 19: ...2 Buzzer T1 3 9 21 4 10 22 Hot air Combi Steam Mode Switch Combi 5 6 11 12 7 8 17 18 19 20 Steam 6 7 tm1 4 5 6 TIMER S5 B C D 1 shot E F Motor Delime S15 P N L1 L2 L1 N 120V Input power Optional F2 10A F1 10A Slow Blow Slow Blow 1 KVA Thermally protected A G H F3 662_F 350_C to160_C H4 Power on 5 6K 0 J Speed Control I FIGURE 1 ...

Page 20: ...FLOW CHART P5 Temp Controller Contacts Mode Switch S1 12 closed for heat H5 XFMR1 THS2 SPARK SENSE4 PV1 G pv m IG1 FS1 Combination valve L2 24VAC THS2 SPARK SENSE4 PV1 pv IG1 FS1 MV3 C B Hot Air IGN2 Hot Air IGN1 9 R205 1 A D E FIGURE 2 ...

Page 21: ...ation F6 H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 Combination F6 H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 Combination F6 H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 G pv m IG1 FS1 Combination B L2 G I E H5 demand on F G H C M R Steam High limit Contacts closed for heat XFMR1 THS2 SPARK SENSE4 PV1 G pv m IG1 FS1 Combination valve L2 24VAC THS2 SPARK SENSE4 PV1 pv IG1 FS...

Page 22: ...XFMR1 24VAC SPARK SENSE4 PV1 pv m IG1 FS1 Combination valve Steam XFMR1 24VAC SPARK SENSE4 PV1 pv m IG1 FS1 Combination valve Steam XFMR1 24VAC SPARK SENSE4 PV1 pv m IG1 FS1 Combination valve Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 G pv m IG1 FS1 Combination valve L2 G XFMR1 THS2 SPARK SENSE4 PV1 G pv IG1 FS1 Combination valve L2 24VAC THS2 SPARK SENSE4 PV1 pv IG1 FS1 MV3 Hot Air IGN1 m m m m m MV...

Page 23: ... Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 G pv m IG1 FS1 Combination valve F6 M R Steam High limit H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 F6 M R Steam High limit H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 F6 M R Steam High limit H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 F6 M R Steam High limit H6 Steam XFMR1 24VAC THS2 SPARK SENSE4 PV1 pv m IG1 FS1 Contac...

Page 24: ...coil R203 R203 5 9 R204 11 3 cw D F D Delime S15 P11 Flush disable 1 10 6 R203 T 90 sec drain flush timer 13 A B C D E F L1 L2 L1 120V Input power Optional F2 10A F1 10A Slow Blow Slow Blow 1 KVA Thermally protected N N G H T4 Open at 180_F 82_C Close at 160_F 71_C to 160_C S S4 HA S10 C S22 8 R206 7 FIGURE 6 ...

Page 25: ... FAN S1 22 S1 4 S1 10 S HA Quench Cooling Fan P4 quench Open 140_F 60_C Close 167_F 75_C S13 LLC H2 13 14 L2 10 6 R204 Fast Fill S14 HLC Hot Water Slow Fill R204 11 12 L2 208V 24V F9 2 amp fuse 8 7 5 6 R5 5 1 A C G I H J S11 K M L N XFMR O E F B C D FIGURE 7 ...

Page 26: ...C FAN STEAM FLUE Hot Air Flue Hot Air Flue Hot Air Flue GAS DRAIN PWR PWR MOTOR COVER MOTOR COVER WATER INPUT WATER INPUT TOP UNIT BOTTOM UNIT Drain Vent All Drain is supplied by customer Drip pan drain NOTE Connection is not vented to drain C H H C H H FIGURE 8 ...

Page 27: ...3 11 BC14G FLUE ASSEMBLY GAS DRAIN EC FAN EC FAN STEAM FLUE Hot Air Flue Hot Air Flue Hot Air Flue Hot Air Flue GAS DRAIN PWR PWR MOTOR COVER MOTOR COVER WATER INPUT WATER INPUT TOP UNIT BOTTOM UNIT FIGURE 9 ...

Page 28: ...ers D Inside of the dial section there are two terminals Use your meter on the ohms setting Turn the dial until to the desired ohms value Reattach the dial section and test unit 1 2 3 4 1 2 3 4 FIGURE 10 T2 Steam duty cycle In combi mode L is 375K OHMS Steam ON 45 seconds R is 666K OHMS Steam OFF 80 seconds T3 One shot steam NOTE Set by timer on front panel T4 Flush timer L Is 150K OHMS Flush ON 9...

Page 29: ...BC14G SCHEMATICS CHAPTER 4 ...

Page 30: ...BC14G 4 1 BC14G FIGURE 1 ...

Page 31: ...SCHEMATICS 4 2 BC14G FOR CE FIGURE 1 ...

Page 32: ...BC14G 4 3 This page intentionally left blank ...

Page 33: ...PRE SITE VISIT QUESTIONS CHAPTER 5 ...

Page 34: ... the COOL DOWN mode 1 Is the oven plugged in 2 Is the deliming switch on the left hand side of the oven in the ON position 3 Push the fan speed control switch Does the convection motor come on HOT AIR MODE NO operation with the mode switch in the HOT AIR mode 1 Does the green power on light on the top right corner of the control panel come ON or light up 2 Turn the timer up to 10 minutes and then ...

Page 35: ...imer to 5 min utes and press the button next to the timer Is the steam symbol ON or lit up above the STEAM indicator by the mode switch Gas Ovens Only 8 Turn the mode switch to the OFF position and then turn it back on to the STEAM mode Can you hear the oven sparking or tick tick tick COMBI MODE NO operation with the mode switch in the COMBI mode 1 Does the green power on light on the top right co...

Page 36: ...BC14G AND BC14E 5 3 This page intentionally left blank ...

Page 37: ...COMPONENT IDENTIFICATION CHAPTER 6 ...

Page 38: ...quence of opera tion Input 24Vac to THS2 GND SPARK out puts to pilot assembly and sparks PV1 out puts to pilot valve opens valve SPARK output continues until flame sense is proved 15 microamps is lockout minimum you should see is 2 Lock out of modual is after 50 seconds if flame sense has not been proved Once SENSE4 has proved MV3 out puts MV3 is connected to IGN2 modual termi nal THS2 Ignition se...

Page 39: ...State Relay Cold Plate assembly opens at 176_F or 80_C and shuts down the oven closes at 149_F or 65_C 35 GAS OVENS Quench Cold water drain quench solenoid Coil resistance is approxi mately 1830 ohms 36 ELECTRIC OVENS Quench Cold water drain quench solenoid Coil resistance is approximately 1830 ohms Water supply also for the SSR cold plate assembly 37 Resister designated as 5 6Ka Resister in serie...

Page 40: ...inals 10 to 6 are open no power to fast fill solenoid termi nals 9 to 1 are close power provided to R201 relay terminals 13 and 9 46 GAS OVENS R205 Steam Override Relay D Coil is terminals 13 14 Coil is energized by S1 Mode switch terminal 8 when turned to the Steam Mode D Coil energized terminals 10 to 6 close sup plies power to T5 Hot Air Duty Cycle SST Terminals 9 to 5 close supplies power to R...

Page 41: ...mbination valve and burn ers light 59 GAS OVENS Transformer designated as 120V 240V 1 KVA THERMALLY PROTECTED to 160_C step up transformer the control cir cuit for gas ovens with 120Vac input 60 ELECTRIC OVENS Transformer desig nated as 480V 240V 150VA step down transformer for 480V electric ovens only trans former is located under oven cavity 61 T1 Buzzer 62 T2 Steam Duty Cycle Timer D Power in o...

Page 42: ...ONENT LOCATION DIAGRAMS BC14G COMPONENT LOCATIONS 59 DRAIN 1 20 23 32 7 28 58 12 9 14 67 66 46 44 43 41 56 49 53 48 J4 61 65 63 64 J1 62 68 13 57 26 38 51 31 29 17 19 2 18 52 50 54 53 25 16 55 15 6 35 24 30 REAR VIEW FIGURE 1 ...

Page 43: ...ON 6 6 BC14E COMPONENT LOCATIONS 1 DRAIN 4 20 23 28 On Bottom Tray 21 33 34 11 22 60 27 9 12 56 47 45 43 42 40 39 61 63 64 5 13 68 57 26 38 62 J1 J4 J3 49 31 51 17 19 2 18 52 50 54 53 25 16 55 8 24 15 6 30 REAR VIEW FIGURE 2 ...

Page 44: ...BC14E SCHEMATICS CHAPTER 7 ...

Page 45: ...BC14E 7 1 BC14E FIGURE 1 ...

Page 46: ...TROUBLESHOOTING 7 2 BC14E FOR CE FIGURE 1 ...

Page 47: ...BC14E TROUBLESHOOTING CHAPTER 8 ...

Page 48: ...FIGURE 1 location J NO OPERATION WITH THE MODE SWITCH IN HOT AIR 1 Check power at terminal 12 on the mode switch See FIGURE 1 location H If there is no power continue If the power is 208V pro ceed to STEP 8 See FIGURE 2 location B 2 Check the F3 oven high limit See FIGURE 1 location B 3 Check the mode switch See FIGURE 1 4 Check the S2 door switch See FIGURE 1 location D 5 Check relay R5 See FIGUR...

Page 49: ...lid state timing relay See FIGURE 5 location B 4 Check relay R202 coil and contacts See FIGURE 5 NO FLUSH DRAIN MODE MANUAL OR AUTO The T4 flush drain solid state timing relay is ener gized when the P11 flush disable snap disk is closed Both of these parameters must be met for the manual flush drain switch to work NOTE When the P11 flush diable snap disk is closed the steam generator is below 160_...

Page 50: ...Switch S2 24 25 26 Fan speed SW R5 4 2 Buzzer T1 3 9 21 4 10 22 S Hot air Combi team Mode Switch Combi 5 6 11 12 7 8 17 18 19 20 Steam 6 7 tm1 4 5 6 TIMER S5 A B C I 1 shot D E Motor G H Open at 176_F 80_C Close at 149_F 65_C F3 662_F 350_C H4 Power on 03 5 6K 7 A Noise Filter F G Speed Control Delime S15 FIGURE 1 ...

Page 51: ...emp Controller Contacts Primary Mode Switch 9 R205 Contacts 9 1 R202 1 K2 B K2 A Hot air contactor Hot air contactor R201 10 2 Closed for hot air coil R200 R200 10 6 Hot air relay S1 12 closed for heat H5 Contacts closed for heat A B C D E F FIGURE 2 ...

Page 52: ... S1 6 coil 9 in combi mode Temp Controller Contacts closed for steam Steam contactor Contacts Steam contactor Primary Contacts closed for steam Mode Switch Split load R202 F6 Steam High Limit H6 Steam 9 1 R204 R205 S1 8 1 9 R205 5 A B C D E F G H5 H closed for steam FIGURE 3 ...

Page 53: ... K2 A Hot air contactor Hot air contactor R201 10 2 R204 9 1 coil R200 R200 10 6 coil R201 9 R201 5 R200 K3 B K3 A in combi mode Contacts closed for steam Steam contactor Steam contactor Primary Contacts when steam on 9 1 Contacts open when filling H5 Heat Steam H6 F6 M R Steam High limit 25 Duty A Closed in combi B C Split load FIGURE 4 ...

Page 54: ...2 coil 9 in combi mode Contacts closed for steam Steam contactor Steam contactor Primary Mode Switch Split load R202 F6 M R Steam High limit H6 Steam Contacts closed for steam S1 20 5 R202 On demand steam 6 2 1 T3 Timer S9 On demand steam button 9 1 R204 S1 20 S1 6 A B C FIGURE 5 ...

Page 55: ...sh Drain switch R206 2 6 coil R203 R203 5 9 R204 11 3 cw D F D P13 P P N N G L1 L2 A Delime S15 P11 Flush disable 1 10 6 R203 drain flush timer 13 B C D E T4 90 sec Open at 176_F 80_C Close at 149_F 65_C Open at 180_F 82_C Close at 160_F 71_C F G H R206 8 S4 S 7 S10 HA S22 C FIGURE 6 ...

Page 56: ... 10 S1 8 S HA Quench Cooling Fan P12 cold plate Open 95_F 35_C Close 122_F 50_C P4 quench Open 140_F 60_C Close 167_F 75_C S13 LLC H2 13 14 L2 10 6 R204 Fast Fill S14 HLC Hot Water Slow Fill R204 S11 F9 L2 208V 24V F9 2 amp fuse 8 7 5 6 R5 5 1 FIGURE 7 ...

Page 57: ...N ASSEMBLY DRAIN EC FAN EC FAN DRAIN PWR PWR MOTOR COVER MOTOR COVER WATER INPUT WATER INPUT TOP UNIT BOTTOM UNIT Drain Vent All Drain is supplied by customer Drip pan drain NOTE Connection is not vented to drain C H H C H H FIGURE 8 ...

Page 58: ...ed Carefully remove dial section with a pair of pliers D Inside of the dial section there are two terminals Use your meter on the ohms setting Turn the dial until to the desired ohms value Reattach the dial section and test unit 1 2 3 4 1 2 3 4 FIGURE 9 T2 Steam duty cycle In combi mode L is 375K OHMS Steam ON 45 seconds R is 666K OHMS Steam OFF 80 seconds T3 One shot steam NOTE Set by timer on fr...

Page 59: ...TROUBLESHOOTING 8 12 This page intentionally left blank ...

Page 60: ...BC14E INSTALLATION CHAPTER 9 ...

Page 61: ...tting Preset to 20 PSI 138 kPa Drainage Atmospheric Vented Drain Drain Connection 2 00 50 8mm Copper Avg Water Drain Temp Approximately 160_F 71_C TABLE 2 PLUMBING SPECIFICATIONS BC14EDS AA Water Water Pressure 30 PSI 207 kPa minimum 50 PSI 345 kPa maximum Water Connection 3 4 Hose Cold Water Water Regulator Setting Preset to 20 PSI 138 kPa Drainage Atmospheric Vented Drain Drain Connection 2 00 5...

Page 62: ...maintained between the oven and any combustible or non combustible construction See the table below In addition the following clearances are recom mended for servicing D Oven body sides 12 30cm D Oven body back 12 30cm Left Side Heat Shield Heat sources should not be near the air vents lo cated on the left hand side of the gas appliance Consult the factory for optional protective side heat shield ...

Page 63: ...ng and stacking appliances 1 Remove the drip pan from the top appliance 2 Attach the legs or casters to the bottom ap pliance 3 Place the top appliance on the bottom ap pliance Be sure all four sides are flush 4 Bolt the two appliances together using the bolts provided 5 Replace the drip pan 6 Connect the drain electrical and water Refer to page 9 4 Drip Pan BC14G Shown FIGURE 2 ...

Page 64: ...V copper piping reduced to 1 1 2 DWV pipe If the vent system is not purchased as an option R9381 Blodgett Combi recommends plumbing the oven as shown in FIGURE 4 The steam vent should be run to an open floor drain avoiding flexible hose that could sag and al low trapped water to accumulate The customer must supply the piping from the oven to the drain Connect the drip pan drain to the steam vent w...

Page 65: ...hinges touch and pivot Lift up the door slightly A Loosen the three allen head bolts on the bottom hinge attached to the oven B Tap the hinge in or out as needed Keep the hinges parallel as shown in FIGURE 5C C Tighten the three allen head bolts D Remove the screwdriver to lower the door Adjusting the Catch Adjust the catch as follows 1 In the top of the door handle is a round roller Swing the doo...

Page 66: ...t and must be readjusted FINE TUNING A DOOR GASKET Use the following procedure if the door shuts well in both hot air and steam but you still have a little steam leaking from the door gasket 1 Make a note where the steam is leaking 2 Take a tube of silicone and lay a bead out on a flat surface Let it dry 3 Tack the bead behind the door gasket with a couple of dabs of silicone This pushes the gaske...

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