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BC14E AND BC14G
COMBINATION OVEN STEAMER
SERVICE AND REPAIR MANUAL
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)
E
2002 --- Blodgett Combi
TABLE OF CONTENTS
Section 1 BC14G Installation
Installation Specifications/Information
Oven Location
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Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plumbing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 2 Operation and Maintenance
Standard Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Meat Probe
Deliming
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Section 3 BC14G Troubleshooting
BC14G Troubleshooting Guide
BC14G Incoming Power Check
BC14G Hot Air Flow Chart
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BC14G Steam Flow Chart/Water Fill
BC14G Combi Flow Chart
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BC14G On Demand Steam Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BC14G Flush Flow Chart
BC14G Water Fill/Meat Probe/condensate/cooling fan
BC14G Drain Assembly
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BC14G Flue Assembly
BC14G Timer Settings
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Section 4 BC14G Schematics
BC14G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BC14G for CE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 5 Pre-Site Visit Questions
Troubleshooting Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 6 Component Identification
Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 7 BC14E Schematics
BC14E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BC14E for CE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3---1
3---3
3---4
3---5
3---6
3---7
3---8
3---9
3---10
3---11
3---12
4---1
4---2
5---1
6---1
6---5
7---1
7---2
1---1
1---3
1---4
1---5
1---6
2---1
2---2
2---3
TABLE OF CONTENTS
Section 8 BC14E Troubleshooting
BC14E Troubleshooting Guide
BC14E Safety Limits Flow Chart
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BC14E Hot Air Flow Chart
BC14E Steam Flow Chart
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BC14E Combi Flow Chart
BC14E On Demand Flow Chart
BC14E Flush Flow Chart
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BC14E Water Fill/Meat Probe
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BC14E Drain Assembly
BC14E Timer Settings
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Section 9 BC14E Installation
Installation Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oven Location and Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plumbing Connections
Door Adjustments
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8---1
8---3
8---4
8---5
8---6
8---7
8---8
8---9
8---10
8---11
9---1
9---2
9---3
9---4
9---5
CHAPTER 1
BC14G INSTALLATION
BC14G
INSTALLATION SPECIFICATIONS/INFORMATION
Before starting to troubleshoot an oven, verify the oven has been installed correctly. The installation of the electric and gas connections must be performed by a qualified installer only. The installation must conform to all local and national installation standards. A hood system is required with the BC14G.
MAXIMUM SHELF LOADING
BC14G 100 lbs (45.5 Kg)
TABLE 1
PLUMBING SPECIFICATIONS -- BC14G/AA
Water
Water Pressure
Water Connection
Water Regulator Setting
Drainage
Drain Connection
Avg Water Drain Temp.
30 PSI (207 kPa) minimum
50 PSI (345 kPa) maximum
3/4” Hose Hot and Cold Water
Preset to 20 PSI (138 kPa)
Atmospheric Vented Drain
2.00” (50.8mm) Copper
Approximately 160_F (71_C)
TABLE 2
PLUMBING SPECIFICATIONS -- BC14GDS/AA
Water
Water Pressure
Water Connection
Water Regulator Setting
Drainage
Drain Connection
Avg Water Drain Temp.
30 PSI (207 kPa) minimum
50 PSI (345 kPa) maximum
3/4” Hose Cold Water
Preset to 20 PSI (138 kPa)
Atmospheric Vented Drain
2.00” (50.8mm) Copper
Approximately 160_F (71_C)
NOTE: For steam requirements see page 1---5 STEAM CONNECTION for the BC14GDS.
TABLE 3
1---1
INSTALLATION
Gas Type
Natural
Hot Air
RATINGS -- GAS APPLIANCES -- BC14G/AA
Gas Input
Steam --- 55,000 BTU/Hr
65 000 BTU/Hr
Total --- 115,000 BTU/Hr
Voltage
208-240
120
Phase
1
1
Amps
15
15
Motor
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
Propane Steam --- 48,000 BTU/Hr
Hot Air 65 000 BTU/Hr
Total --- 113,000 BTU/Hr
208-240
120
1
1
15
15
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
3/4” FNPT connector for all U.S. and Canadian installations
TABLE 4
Gas Type
Natural
Propane
RATINGS -- GAS APPLIANCES -- BC14GDS/AA
Gas Input
65,000 BTU/Hr
Voltage
208-240
Phase
1
Amps
15
Motor
1/2HP 208-240VAC, 50/60 Hz
65,000 BTU/Hr
120
208-240
120
1
1
1
15
15
15
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
3/4” FNPT connector for all U.S. and Canadian installations
TABLE 5
T
Gas
Type
Natural
Propane
P
GAS PRESSURE -- BC14G/AA and BC14GDS/AA
Inlet Orifice Size at Sea Level
Hot Air Steam
Manifold Pressure
Hot Air Steam
7---14” W.C.
12---14” W.C.
.0531” dia
.032” dia
.042” dia
.026” dia
3.5” W.C.
10.0” W.C.
3.5” W.C.
10.0” W.C.
TABLE 6
1---2
BC14G
OVEN LOCATION
Certain minimum clearances must be maintained between the oven and any combustible or noncombustible construction. See the following table.
The following clearances are recommended for servicing.
D
D
Oven body sides --- 12” (30cm)
Oven body back --- 12” (30cm)
NOTE: On gas models, routine servicing can usually be accomplished within the limited movement provided by the gas hose restraint. If the oven needs to be moved further 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 returned to its normal position.
Left Side Heat Shield
Heat sources should not be near the air vents located on the left hand side of the gas appliance.
Consult the factory for optional protective side heat shield.
BC14G P/N R9527
Oven
Model
BC14G
MINIMUM REQUIRED
CLEARANCES
Right Side Left Side Back
1”
(25.4mm)
6”
(152.4mm)
6”
(152.4mm)
TABLE 7
1---3
INSTALLATION
STACKING
WARNING!!
Stacking should be performed by qualified installation personnel only. The appliances are heavy. Take care to use proper tools and techniques when lifting and stacking appliances.
1. Remove the drip pan from the top appliance.
2. Attach the legs or casters to the bottom appliance.
3. Place the top appliance on the bottom appliance. Be 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. Order part number
R9381 for single or top ovens.
Hot Air
Flue
Steam
Generator
Flue
Steam Vent
Assembly
Option
FIGURE 1
Drip Pan
1.125” I.D. Hose from Drip Pan Drain
Rear View
1---4
BC14G
PLUMBING CONNECTIONS
WATER CONNECTION
Connect the appliance to quality water (refer to specs below) via a pressure hose with 3/4” (19mm) couplings. The water pressure needs to be between 30 psi (min) and 50 psi (max). All ovens are supplied with a water manifold which allows for one, cold water only connection to the oven. This water connector must have a brass water restrictor attached to it, which is part of the manifold assembly. Should a customer wish to supply treated water to the steam generator, a kit can be added to the oven which supplies a plug for the water manifold and a separate water flow restrictor.
Water must meet the following minimum requirements:
D
Total Dissolved Solids (TDS) content will not exceed 30 parts per million.
D
Water PH must be 7.0 or higher.
WARNING!!
Operating the appliance without the water restrictor installed will invalidate the warranty. The use of poor quality water will invalidate the warranty.
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. In a stacked oven configuration, the venting on the bottom oven must vent above the top oven. It is recommended that separate drain lines be run on stacked ovens. Refer to
FIGURE 3 for a recommeded water drain configuration.
Vents
Steam
Hot Water
Drains
Cold Water
Option 1
Cold Water
Option 2
Water Connections Rear of Appliance
FIGURE 2
1---5
FIGURE 3
STEAM CONNECTION FOR BC14GDS
Steam supply line is 3/4” NPT. Steam must be clean, dry and potable. A particle screen and bucket trap may be needed and are recommended. 60 lbs per hour is the maximum usage per oven. Steam supply pressure should not exceed 40 to 50 psi. The flow pressure is 1-1/2 to 3-1/2 psi and is set at the steam pressure regulator supplied inside the oven.
INSTALLATION
DOOR ADJUSTMENTS
NOTE: When making door adjustments, always adjust the hinge side first.
1. Swing the door so it just hits or runs into the catch on the left hand side of the door. DO NOT latch the door handle to the catch on the oven body. The left hand side of the door should just be touching the gasket evenly from top to bottom.
Adjusting the Hinges
NOTE: If you need to adjust the hinges, always adjust the top hinge first.
NOTE: The hinges on the door have no adjustment, you can only adjust the hinge on the oven.
1. Adjust the top hinge as follows:
A.) Loosen the three allen head bolts on the top 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
2. Adjust the bottom hinge as follows:
A.) You must remove the weight of the door from the bottom hinge to adjust it. To remove the weight from the hinge, slide a screwdriver head into the gap where the two 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 door until the door handle is close to the catch on the oven.
2. Loosen the two bolts holding the latch to the face of the appliance.
3. Adjust the catch from side to side until the head of the catch is centered with the roller.
4. Adjust the catch up and down. There should be a small clearance between the wheel on the door handle and the tooth of the catch on the oven. See FIGURE 5. In most cases the catch will be all the way up.
5. Tighten the two bolts that hold the catch in place.
6. For easy alignment, swing the door close to the catch. Use a felt tipped marker on the door handle to mark the catch position.
7. Adjust the top of the catch in and out. Adjust the top of the catch so that the door closes firmly.
8. Tighten the single catch bolt.
B
A
Door
Oven
C
FIGURE 4
1---6
BC14G
Adjust for small gap
FIGURE 5
Checking Door Adjustment
NOTE: When the door is adjusted properly, you should be able to close a dollar bill between the door and gasket on all four sides of the door and still be able to pull it out. If you cannot, the door is too tight, and must be readjusted.
1. Check the closing of the door in the steam mode.
2. Next check the closing of the door when the oven is heated to 374_F.
3. The door should close easily in both conditions. If it does not, the door is too tight 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 gasket out enough to seal the steam leak and does not over tighten the door.
OR:
1. If you look behind the gasket, it is held in place with a metal bar with screws. Change the screws behind the gasket where it is leaking to
10/24 round head screws. Use stainless screws and put NEVER SEAZE on the threads so they won’t bind.
1---7
CHAPTER 2
OPERATION AND
MAINTENANCE
BC14G AND BC14E
STANDARD CONTROLS
1
2
3
5
9
4
11
10
CONTROLS IDENTIFICATION
1.
MODE SELECTOR SWITCH --- turns power to the oven on or off. Allows selection of Steam,
Hot Air, Combi or Cool Down Modes.
2.
TEMPERATURE DIAL --- used to set the cooking temperature in all modes. In the Steam mode, the temperature must be set to less than or equal to 212_F (100_C).
3.
STEAM INJECTION TIMER --- used to set the time for the steam injection cycle.
4.
STEAM ON DEMAND SWITCH --- used to initiate 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 generator is filled with water.
9.
TEMP LIGHT --- illuminated until the temperature setting on the dial has been reached.
10.
STEAM LAMP --- illuminated when steam is being added to cooking process.
11.
ON LIGHT --- illuminated when the oven is turned on in any mode.
6
7
8
FIGURE 1
2---1
OPTIONAL MEAT PROBE
CONTROLS IDENTIFICATION
1.
MEAT PROBE SWITCH --- controls power to the meat probe.
2.
MEAT PROBE CONTROL --- use to set the desired probe temperature. Indicates the actual temperature of the product.
3.
MEAT PROBE CONNECTOR --- receptacle for the plug in meat probe.
NOTE: For sanitation purposes it is recommended that the meat probe remain plugged into the front panel receptacle at all times.
OPERATION
Measuring the product core temperatures during long roasting periods is very practical. It is especially important for products such as Roast Beef to reach a specific internal temperature.
Place the probe through to the middle of the product’s thickest 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.
OPERATION AND MAINTENANCE
1. Set the MODE SELECTOR Switch to the desired 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 setpoint temperature. Use the down arrow key (5) to decrease the setpoint temperature.
4. Set the TIMER to STAY ON. The cooking process runs automatically.
When the selected core temperature is reached, the buzzer will sound and the appliance shuts off automatically.
The temperature and mode can by changed at any time during the process.
5. Shut the appliance off by setting all switches to
OFF.
NOTE: When setting the internal temperature, be sure to allow for carry-over cooking after the roast is removed from the oven.
3
1
2
FIGURE 2
4 5 6
2---2
BC14G AND BC14E
DELIMING
WARNING!!
Deliming solutions are hazardous and can cause burns to the skin and eyes.
Wear protective clothing and eyewear when decalcifying your appliance.
Deliming of the steam generator is the single most important preventative maintenance task. Lime will build up inside the steam generator, reducing efficiency and causing damage to the level control system.
WARNING!!
Problems caused by insufficient monthly deliming are not covered by the warranty.
WARNING!!
DO NOT actuate the deliming switch unless the oven is in the OFF mode.
To decalcify your appliance:
1. Turn appliance to the STEAM mode until steam is produced.
2. Turn the appliance OFF.
3. Move the deliming switch to the DELIME position.
4. The deliming chemical has a chart on the container for the chemical to total water volume ratio. The total water volume for your unit is measured in quarts and is listed next to your unit identification on the deliming pump.
Oven
Model
BC14E
BC14G
Total Water
Volume
23 qrts
13 qrts
Water and
Deliming Solution
8 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. Disconnect the pump hose from the appliance.
10. Wait 1/2 to 1 hour.
11. Move the deliming switch to the RUN position.
The appliance will automatically flush the steam generator for 90 seconds.
12. After the unit flushes for 90 seconds, clean the deliming pump and deliming port. Fill the deliming reservoir to the SYSTEM FLUSH level with tap water.
13. Attach the deliming hose to the deliming port.
Slowly pump in the tap water to flush the deliming connector and pump assembly.
14. Disconnect the deliming pump assembly from the unit.
15. Press and hold the Drain/Flush switch in the
Flush position for 30 seconds.
Deliming
Switch
Push Tab to release
View A
See View A
Deliming
Pump
Deliming
Solution
Reservoir
Deliming
Port
FIGURE 3
Hose
See
View A
2---3
CHAPTER 3
BC14G
TROUBLESHOOTING
BC14G
BC14G TROUBLESHOOTING GUIDE
In the following troubleshooting guide, the schematic is broken down into areas. This allows the oven to be checked in sections.
When troubleshooting, slide the control panel out and use your volt meter. The main control circuit voltage for all Synergy ovens is 230 volts. Once the problem is determined, it is often easier to remove the slide out from the oven completely to change components. To remove the slide out, disconnect the hot air thermostat probe, ground wire, and large brown plug in connector.
NOTE: Always troubleshoot a Synergy oven in the following sequence: COOL DOWN, HOT
AIR, STEAM, and then COMBI. Reference the text that follows with the appropriate troubleshooting schematic to help you troubleshoot each mode.
NO OPERATION WITH THE MODE SWITCH IN
COOL DOWN
1. Verify the deliming switch is in the on position.
2. Verify power is being supplied at the outlet.
3.
115V only --- Check fuses in the small pull-out fuse holder under the power plug in the rear of the oven. See FIGURE 1, location (A).
4.
115V only --- Check the input and output of the step-up transformer located in the rear of the oven in the upper left hand corner. In order to access the transformer you must remove the back panel. A good place to check the output voltage, before removing the back panel, is at the deliming switch on the left hand side of the oven.
5. Check the mode switch. See FIGURE 1.
6. Check the fan speed switch. See FIGURE 1 location (G).
7. Check the solid state speed control if the motor works in high speed and not low. See
FIGURE 1, location (I).
8. Check 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, continue. If power is 208V, proceed to STEP 8.
2. Check 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 FIGURE 1, location (E).
6. Check timer S5. Turn the timer to ten minutes and continue. See FIGURE 1, location (E).
7. Check the mode switch. See FIGURE 1, location (H).
8. Check thermostat P5. See FIGURE 2, location
(B).
9. Check that relay R205 contacts 9 and 1 are closed. See FIGURE 2, location (A).
10. If the hot air light is not lit on P5 check P5 temp controller for voltage. See FIGURE 2 location (B).
11. Check XFMR input and output voltage. See
FIGURE 2.
12. Check hot air IGN1 terminal THS2 for voltage.
See FIGURE 2 location (D).
13. Check hot air IGN2 terminal THS2 for voltage.
See FIGURE 2 location (E).
NO OPERATION WITH THE MODE SWITCH IN
STEAM
1. Check power at terminal 6 on the mode switch.
See FIGURE 1, location (H). If no power, return to NO OPERATION WITH THE MODE SWITCH IN
HOT AIR. Your problem is most likely a bad mode switch position. If power is 208V, proceed.
NOTE: The hot air is cycled on in the steam
mode to boost temperature.
2. If the steam logo by the mode switch is illuminated, jump to STEP 10.
3. If the low water light in the lower right hand corner of the control panel stays on, jump to NO
FILLING OF STEAM GENERATOR.
4. If hot air light not lit on P5 check P5 temp controller for voltage. See FIGURE 3, location (B).
5. Check thermostat P5. See FIGURE 3, location
(A).
6. Check that relay R205 contacts 9 to 5 are closed. Check coil and contacts for proper operation. See FIGURE 3, location (I).
7. Check F6 high limit. See FIGURE 3.
3---1
8. Check that R204 contacts 9 to 1 are closed.
See FIGURE 3, location (E).
9. Check that R202 contacts 1 to 9 are closed.
See FIGURE 3, location (F).
10. Check XFMR1 input and output power. See
FIGURE 3, location (G).
11. Check THS2 ignition module 24VAC. See
FIGURE 3, location (H). If no hot air boost in the steam mode, check T5.
12. Check that R205 contacts 10 to 6 are closed.
See FIGURE 3, location (I).
13. Check input and output of T5 solid state timing relay. See FIGURE 3, location (J).
The rest of the ignition circuit for the HOT AIR boost was proven when you trouble shot the hot air mode.
NO FILLING OF STEAM GENERATOR
1. Verify water is on to Synergy oven and flowing through water restrictor.
2. Check mode switch positions 4, 10, and 22.
See FIGURE 7, location (A).
3. Check input and output to fast LLC (Low Level
Control) float. The LLC is the long float. See
FIGURE 7, location (B).
4. Check relay R204, coil, input and output. See
FIGURE 7.
5. Check fast fill solenoid. See FIGURE 7, location (D).
6. Verify hot water slow fill is operating. See
FIGURE 7, locations (E) and (F).
NO OPERATION WITH THE MODE SWITCH IN
COMBI
Most of this circuit has already been trouble shot by proving the HOT AIR and STEAM mode work.
1. Check T2 combi solid state timing relay input and output. See FIGURE 4, location (A).
NO ON DEMAND STEAM
Set time out and press ON DEMAND STEAM button.
1. Check S9 on demand steam button. See
FIGURE 5, location (A).
2. Check input and output to T3 solid state timing relay. See FIGURE 5, location (B).
TROUBLESHOOTING
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 energized 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_F
(71_C) and the oven is in the OFF position.
1. Check the deliming switch (S15) is in the off position. See FIGURE 6, location (A).
2. Check that P11 contact are closed. See
FIGURE 6, location (B).
3. Check that relay R206 contacts are closed.
See FIGURE 6.
4.
Auto Flush/Drain – Check T4 flush/drain solid state timing relay inputs and outputs. See
FIGURE 6, location (H).
5.
Manual Flush/Drain – Check S12 flush/drain switch input and outputs. See FIGURE 6, location (D).
6. Check R203 relay coil and contacts. See
FIGURE 6, location (E).
7. Check that R204 contacts are closed. See
FIGURE 6, location (G).
8. Check flush/fill solenoid.
NO MEAT PROBE OPERATION
Synergy oven must be on and the timer set to the stay on position. The meat probe must also be plugged into the front control panel.
1. Check mode switch terminals 4, 10, and 22.
See FIGURE 4, location (A).
2. Check S11 fuse. See FIGURE 4, location (J).
3. Check step down transformer XFMR inputs and outputs. See FIGURE 4, location (L).
4. Check inputs and outputs of meat probe controller. See FIGURE 6, location (M).
5. Check R5 relay coil and terminals. See
FIGURE 4, location (O).
6. Check T1 buzzer, FIGURE 1.
3---2
BC14G
BC14G INCOMING POWER CHECK
F1 10A
Slow Blow
Optional
120V Input power
L1 L2
F2 10A
Slow Blow
P
1 KVA
Thermally protected to 160_C
N
L1 N
Delime
S15
B
F3
662_F
(350_C)
D
S2
Door Switch
Mode Switch
3 4
C
Steam
Hot air
9 10
21 22
Combi
F
23
A
H4
Power on
5.6K
T1
Buzzer
4
R5
0
2
24
Cool
Down
G
SW
Fan speed
25
24
26
I
Speed Control
Motor
J
E
4
5
6
TIMER---S5
6 tm1
7
5
11
7
17
19
H
Mode Switch
6
12
8
Steam
Hot air
Steam
Combi
18
20
Combi
1 shot
FIGURE 1
3---3
TROUBLESHOOTING
BC14G HOT AIR FLOW CHART
S1#12
Mode Switch
L2
C
XFMR1
Contacts closed for heat
9
R205
1
P5
Temp
Controller
B
H5
A
24VAC
IG1
FS1 pv
THS2
SPARK
SENSE4
D
PV1
MV3
Hot Air IGN1
G
IG1
FS1
Combination valve pv m
FIGURE 2
E
THS2
SPARK
SENSE4
PV1
Hot Air IGN2
3---4
BC14G
BC14G STEAM FLOW CHART/WATER FILL
Mode Switch
S1#8 S1#6
I
R205 coil
Contacts closed for steam
H5 demand on
A
C
P5
Temp
Controller
9
R205
5
I
9
R204
1
Hot water fill
E
L2
G
XFMR1
G
24VAC
IG1
FS1
Combination valve
B
H6
Steam
1
R202
9
F
F6
M/R Steam
High limit
C pv
THS2
SPARK
SENSE4
PV1
H
G m
L2
XFMR1
Contacts closed for heat
T5
J
10
R205
6
I
24VAC
IG1
FS1
THS2
SPARK
SENSE4
G
IG1
FS1 pv PV1
MV3
Hot Air IGN1
THS2
SPARK
SENSE4
Combination valve pv PV1 m
Hot Air IGN2
FIGURE 3
3---5
BC14G COMBI FLOW CHART
Mode Switch
A
T2
Combi timer
25% Duty
S1#18
2
1
Contacts open when filling
9
R204
1
B
S1#20
P5
Temp
Controller
9
R205
1
Heat
H5
XFMR1
L2
G
1
R202
9
C
F6
M/R Steam
High limit
THS2
FS1
24VAC pv
G
IG1
FS1
Combination valve pv
MV3
Steam IGN1
TROUBLESHOOTING
L2
THS2
SPARK
SENSE4
PV1
MV3
Hot Air IGN1
G
G
THS2
SPARK
SENSE4
PV1
MV3
Hot Air IGN2
IG1
FIGURE 4
3---6
BC14G
BC14G ON DEMAND STEAM FLOW CHART
Mode Switch
S1#20 S1#20 S1#12
S9
On demand steam button
A
T3
Timer
B
6
2
1
Contacts closed
10
R204
2
On demand steam.
R202 coil
C
Contacts closed for steam
5
R202
9
H6
Steam
F6 M/R Steam High limit
XFMR1
24VAC
IG1
FS1
Combination valve pv m
THS2
SPARK
SENSE4
PV1
FIGURE 5
3---7
G
TROUBLESHOOTING
BC14G FLUSH FLOW CHART
F1
10A
Slow Blow
Optional
120V Input power
L1
L2
F2
10A
Slow Blow
N
A
Delime S15
1 KVA
Thermally protected to 160_C
L1 N
B
P11
Open at 180_F (82_C)
Close at 160_F (71_C)
2
R206
6
C
8
R206
7
S12 Flush Drain Switch
D
F/D 25
24
D 26
H
2
1
T4
T 90 sec drain flush timer
S
S4
HA
S10
C
S22
10
R203
6
F
5
R203
9
11
R204
3
G
13 R203 coil
E cw drain pump
Flush fill
FIGURE 6
3---8
BC14G
BC14G WATER FILL/MEAT PROBE/CONDENSATE/COOLING FAN
S
S1#4
A
HA
S1#10
P4 quench
Open 140_F (60_C)
Close 167_F (75_C)
G
Quench
I
Cooling Fan
H
L
K
208V
L2
24V
J
S11
11
12
F9
2 amp fuse
XFMR
5
R5
O
1
E
S14
HLC
Hot Water
Slow Fill
F
S13
LLC
7 5 6
M
8
C
S1#22
B
H2
13
R204
L2
14
C
10
R204
6
Fast
Fill
D
N
FIGURE 7
3---9
TROUBLESHOOTING
BC14G DRAIN ASSEMBLY
Drain Vent
WATER
INPUT
C
H
H
Hot
Air
Flue
Hot
Air
Flue
MOTOR
COVER
TOP UNIT
Hot
Air
Flue
EC/FAN
STEAM
FLUE
DRAIN
PWR
GAS
All Drain is supplied by customer
WATER
INPUT
C
H
H
EC/FAN
MOTOR
COVER
BOTTOM UNIT
PWR
DRAIN
GAS
Drip pan drain
NOTE: Connection is not vented to drain.
FIGURE 8
3---10
BC14G
BC14G FLUE ASSEMBLY
WATER
INPUT
Hot
Air
Flue
Hot
Air
Flue
MOTOR
COVER
TOP UNIT
Hot
Air
Flue
Hot
Air
Flue
EC/FAN
STEAM
FLUE
DRAIN
PWR
GAS
EC/FAN
WATER
INPUT
MOTOR
COVER
BOTTOM UNIT
DRAIN
PWR
GAS
FIGURE 9
3---11
TROUBLESHOOTING
BC14G TIMER SETTINGS
TOP VIEW
A
4
3 2
1 4
3 2
1
L R
SIDE
VIEW
B
Remove dial section
Dial
SIDE
VIEW
C meter
D
Inside if dial section
A) Top view of Timer.
NOTE: The L & R there are two timer adjustments per timer.
B) Side view of timer.
C) Side view with dial section removed. 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.
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.
FIGURE 10
T4 Flush timer
L) Is 150K OHMS Flush ON 90 seconds.
T5 Hot air duty cycle. In steam mode.
L) is 375K OHMS Hot air ON 45 seconds
R) is 500K OHMS Hot air OFF 60 seconds
3---12
CHAPTER 4
BC14G SCHEMATICS
BC14G
BC14G
FIGURE 1
4---1
BC14G FOR CE
SCHEMATICS
FIGURE 1
4---2
BC14G
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4---3
CHAPTER 5
PRE-SITE VISIT
QUESTIONS
BC14G AND BC14E
TROUBLESHOOTING SEQUENCE
ALWAYS troubleshoot a Synergy oven in the following sequence;
1. Cool Down
2. Hot Air
3. Steam
4. Combi
By following this sequence you bring in components gradually. DO NOT proceed to the next mode of operation until you have verified Cool Down works first.
If possible, contact the customer before visiting the sight and have them check operation of the Synergy oven in each mode of operation. Suggested questions are listed with each failure mode. Have a schematic in hand when asking questions. By asking the questions in the proper sequence you are slowly troubleshooting the circuit.
COOL DOWN MODE
NO operation with the mode switch in 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 manually turn the timer down to the “zero” position. Does the timer alarm “BUZZ” or sound?
3. If you turn the thermostat knob up, does the red thermostat light to the right of the thermostat come “ON” or light up?
(Gas Ovens Only)
4. Is the gas turned “ON” in the rear of the oven and turned “ON” in the slide panel in the lower left on the front of the oven?
5. Turn the mode switch to the “OFF” position and then turn it back on to the “HOT AIR” mode. Can you hear the oven “sparking” or
“tick-tick-tick”?
5---1
STEAM MODE
NO operation with the mode switch in the
STEAM mode.
1. Is the water on to the oven?
2. Is the fast fill light in the lower right hand corner of the front control panel “ON”?
3. Does the green power on light on the top right corner of the control panel come “ON” or light up?
4. Turn the timer up to 10 minutes and then manually turn the timer down to the “zero” position. Does the timer alarm “BUZZ” or sound?
5. If you turn the thermostat knob up, does the red thermostat light to the right of the thermostat come “ON” or light up?
6. Is the steam symbol “ON” or lit up above the
“STEAM” indicator by the mode switch?
7. Turn the “steam on demand “ timer to 5 minutes 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-ticktick”?
COMPONENT IDENTIFICATION
COMBI MODE
NO operation with the mode switch in the COMBI 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 manually turn the timer down to the “zero” position. Does the timer alarm “BUZZ” or sound?
3. If you turn the thermostat knob up, does the red thermostat light to the right of the thermostat come “ON” or light up?
NOTE: If you have an operational problem in the
COMBI mode and all other modes work, the problem most likely is either the Solid
State Timer T2 or the mode selector switch.
5---2
BC14G AND BC14E
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5---3
CHAPTER 6
COMPONENT
IDENTIFICATION
BC14G AND BC14E
COMPONENT IDENTIFICATION
The following is a key for the abbreviations of components on the schematic. Additional information is provided as to the function of the component to assist you in troubleshooting.
NOTE: Refer to the figures on pages 6---5 and
6---6 for component locations.
1.
CF1 --- Electrical compartment cooling fan.
2.
CH-136 – optional COOK & HOLD control for oven operation. Controller has two LCD displays and soft-key push button control
3.
CW --- stands for COLD WATER only.
4.
(ELECTRIC OVENS) -- Elements (Hot Air) --quantity (10), 1.5KW elements located in the cook Compartment.
5.
(ELECTRIC OVENS) -- Elements (Steam) --quantity (6), 3.0KW elements located in the steam generator. Elements are in an assembly with 2 elements per assembly.
6.
Flush/Fill (solenoid) --- (no designation) indicates non-restricted solenoid used for fast filling and flushing of the steam generator.
7.
(GAS OVENS) -- F1 & F2 – 12.5 amp control fuses
8.
(ELECTRIC OVENS) -- F1 & F2 – 5 amp slow blow control fuses
9.
F3 --- Cooking Compartment High Limit Thermostat. Capillary type thermostat with the sensing bulb located in the cooking compartment. Opens at 662_F or 350_C disabling the control circuit.
10.
(ELECTRIC OVENS) -- F3-5A – ( 5 amp fuse on secondary of step down transformer of
480v electric Synergy ovens
11.
(ELECTRIC OVENS) -- F3-60A, F4-60A,
F5-60A, & F6-60A – 60amp fusing for the Hot
Air & Steam elements in a BC14E Synergy
Electric single-phase oven
12.
F6 – Boiler High Limit thermostat. Capillary, manual reset, steam generator high limit.
Opens at 257_F or 125_C.
13.
F9 – 350ma meat probe fuse
14.
(GAS OVENS) -- Hot Air IGN1, IGN2 – Hot Air
Ignition Control Modual. Sequence of operation: Input 24Vac to THS2 & GND. SPARK outputs to pilot assembly and sparks. PV1 outputs 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 outputs. MV3 is connected to IGN2 modual, terminal THS2. Ignition sequence continues for 2nd modual. MV3 supplies power to main valve on the combination valve. Burners light.
15.
Hot Water Fill (solenoid) – (no designation)
The solenoid used for slow filling (fill line is restricted) the steam generator with water by the
HLC reed float assembly.
16.
H2 – Low Water light. Low water light on the lower right hand corner of the control panel. It is only on when the Low Level Control (LLC) float switch is closed (steam generator is fast filling).
17.
H4 – Power “On” light. indicates the oven has been turn on in the “STEAM”, HOTAIR”, or
“COMBI” mode.
18.
H5 – duty light for temperature control board.
19.
H6 – Steam Duty light. When lit, indicates power is being supplied to the steam ignition circuit.
20.
HLC – High Level Control. Float switch (reed switch) in the float assembly which does the normal operation water fill to the steam generator
(this is the shorter float in the float assembly)
21.
(ELECTRIC OVENS) -- K2 (A & B Primary) –
Solid State Hot Air Relays (SSRs). (2) 45 amp solid state relays for hot air. K2A is deactivated in Combi mode if Steam circuit is calling for heat.
22.
(ELECTRIC OVENS) -- K3 (A & B Primary) –
Solid State Steam Relays (SSRs) (2) 45 amp solid state relays for steam. K2A is deactivated in Combi mode if the thermostat is calling for heat.
23.
LLC – Low Level Control. Float switch (reed switch) in the float assembly which fast fills the steam generator (this is the longer float in the float assembly).
6---1
24.
M – Convection motor. 1/2 hp , 208V / 115V convection motor. Has an internal self-resetting thermal overload at 250_F.
25.
Meat Probe (no designation) – “J” type thermocouple meat probe which plugs into front of the oven .
26.
Meat Probe Controller (optional) – shuts off the oven and sounds the buzzer when set temperature has been reached.
27.
(ELECTRIC OVENS) -- Noise Filter – noise filter in control circuit.
28.
Pump --- pump used for removing water from the steam generator when deliming and when self-flushing.
29.
(GAS OVENS) -- PV , PV1 , PV2 – pilot valves.
PV is the pilot valve on the main combination valve used for steam. PV1 is the single coil pilot valve used for hot air. PV2 is the pilot valve on the main combination gas valve used for hot air.
30.
P4 – Quench snap-disk. Snap-disk located near the rear of the drain pipe to supply power to the quench solenoid. Closes at 167_F or
75_C. Opens at 140_F or 60_C.
31.
P5 – Temperature Control Board. Power in is on terminals C & L1. Terminals COM & NO close until desired set temperature is reached in all modes of operation.
32.
P11 – Flush Disable snap-disk. Snap-disk located on the steam generator used to energize the T4 Flush Solid State Timer. Closes at 160_F or 71_C. Opens at 180_F or 82_C.
33.
(ELECTRIC OVENS) -- P12 – Cold Plate Water
Flow Snap Disk snap disk located on the Solid
State Relay Cold Plate assembly, opens at
95_F or 35_C.Closes at 122_F or 50_C. Provides normal cooling of cold plate assembly.
34.
(ELECTRIC OVENS) -- P13 – Cold Plate NO water Fail-safe Snap Disk snap disk located on the Solid 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 approximately 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.
COMPONENT IDENTIFICATION
37.
Resister (designated as “5.6Ka”) -- Resister in series with the buzzer to drop voltage to the buzzer to allow for long periods of operation.
38. R5 – Meat probe relay
D
Coil is terminals 1 & 5. Coil is energized by the meat probe control terminal 6.
D
D
Coil energized. Terminals 4 to 3 close, energizing the buzzer.
Coil not energized. Terminals 4 to 2 closed, power to timer, S5, terminal 4.
39.
(ELECTRIC OVENS) -- R200 – Hot Air Relay coil is terminals 13 & 14 / coil is energiized when oven is in “Hot Air” or “Combi” and P5 thermostat is calling for heat. Terminals 10 to
6 close, energizing K2-B.
40.
(ELECTRIC OVENS) --- R201 – Load Splitting
Relay
D
D
D
D
Coil is terminals 13 &14. Coil is energized by R204 terminal 1 when steamgenerator is full
Coil energized. Terminals 9 to 5 close, power is supplied to F6, then the steam contactors. Terminals 10 to 2 open, no power to K2-A Hot Air contactor.
D coil not energized. Terminals 9 to 5 are open, no power to F6 (no power to steam contactors). Terminals 10 to 2 are closed, supplies power to K2-A Hot Air contactor.
41.
(GAS OVENS) -- R202 – On demand steam relay
D
Coil is terminals 13 & 14. Coil is energized by One shot Steam timer, T3 terminal 2.
Coil energized terminals 9 to 5 close. This by-passes the temperature thermostat and provides power to F6 Boiler High Limit thermostat.
Coil not energized terminals 9 to 1 closed, normal operation, provides power to F6
Boiler High limit thermostat.
6---2
BC14G AND BC14E
42.
(ELECTRIC OVENS) -- R202 – On demand steam relay
D
Coil is terminals 13 & 14. Coil is energized by One shot Steam timer, T3 terminal 2.
D
D
Coil energized terminals 9 to 5 close / provides power to R204 relay terminal 9 (power is by-passed the temperature thermostat).
Coil not energied terminals 9 to 1 closed, normal operation, provides power to P5
Hot Air Thermostat.
43.
203 – Flush / Drain Relay.
D
Coil is terminals 13 & 14. Coil is energized by Flush Timer terminal 1.
D
D
Coil energized. Terminals 9 to 5 close.
Power provided to Fast Fill solenoid. Terminals 10 to 6 close. Power provided to pump.
Coil not energized. Terminals 9 to 5 open.
Terminals 10 to 6 open. Normal operation, auto flush/drain operation disabled.
44.
( GAS OVENS) -- R204 --- Water Fill Relay / Fast low water fill
D
D
Coil is terminals 13 & 14. Coil is energized by
Low Level Control, LLC, water level float reed switch
Coil energized. Terminals 10 to 6 close.
Provides power to fast fill solenoid. Terminals 3 to 11 open. Prevents power being supplied to R203 relay, terminal 9
D
Coil not energized. Terminals 10 to 2 closed, normal operation, provides power to R202 terminal 5
45.
(ELECTRIC OVENS) -- R204 --- Water Fill
Relay / Fast low water fill
D
D
D
Coil is terminals 13 & 14. Coil is energized by
Low Level Control, LLC, water level float reed switch
Coil energized. Terminals 10 to 6 close.
Provides power to fast fill solenoid. Terminals 3 to 11 open. Prevents power being supplied to R203 relay, terminal 9
Coil not energized. Terminals 10 to 6 are open (no power to fast fill solenoid) / terminals 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, supplies power to T5 Hot Air Duty Cycle SST.
Terminals 9 to 5 close, supplies power to
R204 terminal 9.
D
Coil not energized terminals 9 to 1 closed, supplies power to XFMR2 Step Down Transformer for the hot air ignition moduals.
47.
(ELECTRIC OVENS) -- R205 --- Steam Override Relay
D
D
D
D
Coil is terminals 13 &14. Coil is energized by S1 Mode switch terminal 8 when turned to the Steam Mode.
Coil energized terminals 10 to 6 close, supplies power to T5 Hot Air Duty Cycle SST.
Terminals 9 to 5 close, supplies power to
R204 terminal 9.
D coil not energized terminals 9 to 1 closed, supplies power to XFMR2 Step Down
Transformer for the hot air ignition moduals.
48.
R206 --- Drain / Flush Disable relay
D
Coil is terminals 7 & 8. Coil is energized when oven is turned on.
Coil energized. Terminals 2 to 6 opens. Allows no power to Flush Timer, T4, terminal
2.
Coil not energized. Terminals 2 to 6 are closed and allows power to be applied to
Flush Timer, T4, initiating 90 second flush
/ drain cycle
49.
S1 – Mode Selector Switch. Used to select operation mode; “CD” is the Cool Down contacts,
“S” are steam contacts, “H” are Hot Air contacts, “C” are the Combi contacts.
50.
S2 – Proximity Door Switch.
51.
S5 – Timer. Power in is on terminals 6 & 7. Terminals 4 to 6 are closed when the timer is set for continuous “on” or set out to a specific time.
When timed out, terminals 4 to 5 close, energizing the T1 buzzer.
6---3
52.
S9 – One Shot Steam Button. Pressing the button in any mode applies power to terminal 2 of
T3 One Shot Steam Solid State Timer and initiates the steam circuit for the set time.
53.
S10 – Fan Speed Switch
D
High speed, terminals 24 to 26 are closed applying power to convection motor.
D
Low Speed, terminals 24 to 25 are closed applying power to Solid State Motor Speed
Control.
54.
S11 – Meat Probe Switch. terminals 11 to 12 close supplying power to XFMR 208V to 24V step down transformer for the meat probe.
55.
S12 – Flush / Drain Switch
D
In order to work, the oven must be in the
“OFF” position and the steam generator must be below 160_F or 71_C.
D
D
Flush --- terminals 24 to 25 close supplying power to R203 Flush / Drain Solid State timer.
Drain --- terminals 24 to 26 close supplying power to the pump.
56.
S15 – Deliming switch. SPST switch used for deliming.OFF postion is for deliming. ON for normal operation.
57.
Speed Control --- Solid state motor speed controller, drops the motor rpm to approximately 900 rpm.
58.
(GAS OVENS) -- Steam IGN1 – Steam Ignition
Control Modual. Sequence of operation: input
24Vac to THS2 & GND. SPARK outputs to pilot assembly & sparks. PV1 outputs 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 outputs. MV3 supplies power to main valve on the combination valve and burners light.
59.
(GAS OVENS) -- Transformer (designated as
“120V /240V 1 KVA THERMALLY PROTECTED to 160_C) – step up transformer the control circuit for gas ovens with 120Vac input.
COMPONENT IDENTIFICATION
60.
(ELECTRIC OVENS) -- Transformer (designated as “480V / 240V 150VA”) – step down transformer for 480V electric ovens only (transformer is located under oven cavity).
61.
T1 --- Buzzer
62.
T2 --- Steam Duty Cycle Timer
D
D
Power in on terminals 2 & 3. Output on terminal 1
Used to provided power to the steam circuit in the Combi mode. Power supplied to terminal 2, terminal 1 on for 45 seconds and off for
80 seconds.
63.
T3 – One Shot Steam Solid StateTimer
D
Power in on terminals 1 & 3. Terminal 6 is a trigger which initialize timer output on terminal 2. Resistance setting on terminals 4 to 5 determine stay on time.
D
When steam injection button is pressed, power to terminal 6 initiates power out of terminal 2 for set time. Steam circuit energized for set time.
64.
T4 – Flush Solid State Timing relay. Power in is on terminals 2 & 3. Output is to terminal 1 for
90 seconds. This energizes R203 which allows the pump and fill solenoid to come on.
65.
(GAS OVENS) -- T5 – Hot Air Duty Cycle Solid
State Timer. Power in is on terminals 2 & 3. Output is to terminal 1 for 45 seconds on and 60 seconds off. When terminal 1 is on, power is supplied to the Hot air circuit to boost the
Steam mode.
66.
(GAS OVENS) -- XFMR1 – Step Down transformer 208Vac / 240Vac to 24Vac. Supplies
24Vac to the steam ignition modual.
67.
(GAS OVENS) -- XFMR2 – Step Down transformer 208Vac / 240Vac to 24Vac. Supplies
24Vac to the hot air ignition modual.
68.
XSFMR – Step Down transformer 230Vac to
24Vac. Supplies 24Vac to optional meat probe controller.
6---4
BC14G AND BC14E
COMPONENT LOCATION DIAGRAMS
1
20
23
32
7
28
9
12
58
56
17
14
66
67
46
44
43
41
61
63
64
68
13
57
49 19
53
48
65
J4
31
2
18
52
50
29
J1
62
26
38
51
54
53
25
16
55
59
15
6
35
24
REAR VIEW
DRAIN
30
BC14G COMPONENT LOCATIONS
FIGURE 1
6---5
1
20
23
28
COMPONENT IDENTIFICATION
9
12
56
5
17
49
47
45
43
42
40
39
63
61
64
13
J3
31
19
2
18
68
J4 52
50
57
J1
62
26
38
51
54
53
25
16
55
8
REAR VIEW
4
15
24
6
DRAIN
30
BC14E COMPONENT LOCATIONS
FIGURE 2
On Bottom Tray
21 33 34
11
22
60
27
6---6
CHAPTER 7
BC14E SCHEMATICS
BC14E
BC14E
FIGURE 1
7---1
BC14E FOR CE
TROUBLESHOOTING
FIGURE 1
7---2
CHAPTER 8
BC14E
TROUBLESHOOTING
BC14E
BC14E TROUBLESHOOTING GUIDE
In the following troubleshooting guide, the schematic is broken down into areas. This allows the oven to be checked in sections.
When troubleshooting, slide the control panel out and use your volt meter. The main control circuit voltage for all Synergy ovens is 230 volts. Once the problem is determined, it is often easier to remove the slide out from the oven completely to change components. To remove the slide out, disconnect the hot air thermostat probe, ground wire, and large brown plug in connector.
NOTE: Always troubleshoot a Synergy oven in the following sequence: COOL DOWN, HOT
AIR, STEAM, and then COMBI. Reference the text that follows with the appropriate schematic to help troubleshoot each mode.
NO OPERATION WITH THE MODE SWITCH IN
COOL DOWN
1. Verify the deliming switch is in the on position.
2. Verify the water to the oven is turned on.
3. Verify power is being supplied at the outlet.
4. Check the fuses in the panel underneath the control panel. See FIGURE 1, location (A).
5.
Single phase ovens --- Remove the front drip pan and check the 60 amp fuses located under the oven. See FIGURE 1, location (A).
6. Check the noise filter input and output. See
FIGURE 1, location (A).
7. Check the P13 snap disk. See FIGURE 1, location (B).
8. Check the mode switch. See FIGURE 1.
9. Check the fan speed switch. See FIGURE 1, location (G).
10. If the motor works in high speed and not low, check the solid state speed control. See
FIGURE 1, location (I).
11. Check the motor. See 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, proceed 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 FIGURE 1, location (E).
6. Check timer S5. Turn timer to ten minutes and continue. See FIGURE 1, location (E).
7. Check the mode switch. See FIGURE 1, location (H).
8. Check R202 relay. See FIGURE 2, location (B).
9. If the hot air light is not lit on P5, check the P5 temp controller for voltage. See FIGURE 2 location (B).
10. Check that relay R205 contacts 9 and 1 are closed. See FIGURE 2, location (C).
11. Check R201 relay contacts. See FIGURE 2, location (E).
12. Check solid state contactor K2-A, is the red
LED on? See FIGURE 2, location (F).
13. Check R200 relay, coil and contacts. See
FIGURE 2, location (D).
14. Check solid state contactor K2-B, is red LED on? See FIGURE 2, location (F).
NO OPERATION WITH THE MODE SWITCH IN
STEAM
1. Check power at terminal 6 on the mode switch.
See FIGURE 1, location (H). If there is no power, return to NO OPERATION WITH THE MODE
SWITCH IN HOT AIR. Your problem is most likely a bad mode switch position. If power is 230V proceed.
2. If the steam logo by the mode switch is illuminated, jump to STEP 9.
3. If the LOW WATER light in the lower right hand corner of the control panel stays on, jump to
NO FILLING OF STEAM GENERATOR.
4. Check that R202 relay contacts close. See
FIGURE 3, location (B).
5. If the hot air light is not lit (H5) on P5, check P5 temp controller for voltage. See FIGURE 3, location (B).
8---1
6. Check that relay R205 contacts 9 to 5 are closed. Check coil and contacts for proper operation. See FIGURE 3, location (C).
7. Check F6 high limit. See FIGURE 3, location (F).
8. Check that R204 contacts 9 to 1 are closed.
See FIGURE 3, location (E).
9. Check Solid State Contactor K3-B, is red LED on? See FIGURE 3, location (H).
10. Check R200 contacts 9 to 1 are closed. See
FIGURE 3, location (H).
11. Check Solid State Contactor K3-A, is red LED on? See FIGURE 3, location (H).
NO FILLING OF STEAM GENERATOR
1. Verify water is on to Synergy oven and flowing through water restrictor.
2. Check mode switch positions 4, 10, and 22.
See FIGURE 7, location (A).
3. Check input and output to fast LLC (Low Level
Control) float. The LLC is the long float. See
FIGURE 7, location (B).
4. Check relay R204, coil, input and output. See
FIGURE 7.
5. Check fast fill solenoid. See FIGURE 7, location (D).
6. Verify hot water slow fill is operating. See
FIGURE 7, locations (E) and (F).
NO OPERATION WITH THE MODE SWITCH IN
COMBI
Most of this circuit has already been trouble shot by proving the HOT AIR and STEAM mode work.
1. Check T2 combi solid state timing relay input and output. See FIGURE 4, location (A).
NO ON DEMAND STEAM
Set time out and press ON DEMAND STEAM button.
2. Check S9 on demand steam button. See
FIGURE 5, location (A).
3. Check input and output to T3 solid state timing relay. See FIGURE 5, location (B).
4. Check relay R202 coil and contacts. See
FIGURE 5.
TROUBLESHOOTING
NO FLUSH / DRAIN MODE / MANUAL OR AUTO
The T4 flush/drain solid state timing relay is energized 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_F
(71_C) and the oven is in the OFF position.
1. Check that the deliming switch (S15) is in the off position. See FIGURE 6, location (A).
2. Check that the P11 contact is closed. See
FIGURE 6, location (B).
3. Check that relay R206 contacts are closed.
See FIGURE 6.
4.
Auto Flush/Drain – Check T4 flush/drain solid state timing relay inputs and outputs. See
FIGURE 6, location (H).
5.
Manual Flush/Drain – Check S12 flush/drain switch input and outputs. See FIGURE 6, location (D).
6. Check R203 relay coil and contacts. See
FIGURE 6, location (E).
7. Check that R204 contacts are closed. See
FIGURE 6, location (G).
8. Check flush/fill solenoid.
NO MEAT PROBE OPERATION
The Synergy oven must be on and the timer set to the stay on position. The meat probe must also be plugged into the front control panel.
1. Check mode switch, terminals 4, 10, and 22.
See FIGURE 7, location (A).
2. Check S11 fuse. See FIGURE 7, location (J).
3. Check step down transformer XFMR inputs and outputs. See FIGURE 7, location (L).
4. Check inputs and outputs of meat probe controller. See FIGURE 9, location (M).
5. Check R5 relay coil and terminals. See
FIGURE 7, location (O).
6. Check T1 buzzer, FIGURE 4.
8---2
BC14E
BC14E SAFETY LIMITS FLOW CHART
L1 L2
A
P
P
N
G
N
Noise Filter
A
P13
Open at 176_F (80_C)
Close at 149_F (65_C)
H4
Power on
Delime
S15
F3
662_F (350_C)
B
D
S2
Door Switch
3
Mode Switch
4
S team
C
9 10
Hot air
21 22
Combi
F
23
G
24
Cool
Down
G
SW
Fan speed
25
24
26
4
R5
03
2
I
Speed Control
E
4
Motor
5.6K
T1
Buzzer
---7
5
6
TIMER---S5
6 tm1
7
H
Mode Switch
5
11
7
17
19
6
Steam
12
Hot air
8
Steam
18
20
Combi
Combi
1 shot
FIGURE 1
8---3
BC14E HOT AIR FLOW CHART
Mode Switch
S1#12
Contacts closed for heat
9
R202
1
P5
Temp
Controller
B
Contacts closed for heat
9
R205
1
C
H5
A
TROUBLESHOOTING
Contacts
Closed for hot air
10
R201
2
E
10
R200
6
K2---A
Hot air contactor
F K2---B
Hot air contactor
Primary
FIGURE 2
8---4
R200 coil
D
Hot air relay
BC14E
BC14E STEAM FLOW CHART
Mode Switch
S1#8 S1#6
Contacts closed for steam
B H5
9
R202
1
P5
Temp
Controller
A
R205 coil
9
R205
5
C
Split load in combi mode
D
R201 coil
9
R204
1
E
Contacts closed for steam
9
R201
5
F6
G
H6
Steam
F
Steam High Limit
H
Contacts closed for steam
9
R200
1
K3---A
Steam contactor
FIGURE 3
K3---B
Steam contactor
Primary
8---5
TROUBLESHOOTING
BC14E COMBI FLOW CHART
Mode Switch
T2
Combi timer
25% Duty
S1#18
2
1
A
9
R202
1
S1#20
C
B
9
R204
1
P5
Temp
Controller
Contacts open when filling
9
R205
1
Contacts
Closed in combi
C
9
R201
5
F6
M/R Steam
High limit
Split load when steam on in combi mode
R201 coil
10
R201
2
K2---A
Hot air contactor
Heat
H5
H6
Steam
K3---B
Primary
Steam contactor
9
1
R200
Contacts closed for steam
R200 coil
K3---A
Steam contactor
FIGURE 4
10
R200
6
K2---B Hot air contactor
Primary
8---6
BC14E
BC14E ON DEMAND FLOW CHART
Mode Switch
A
S9
On demand steam button
S1#20 S1#20 S1#12
B
T3
Timer
6
2
1
C
R202 coil
On demand steam.
9
R202
5
Contacts closed for steam
9
R204
1
Split load in combi mode
R201 coil
S1#6
H6
Steam
9
R201
5
F6 M/R Steam High limit
Contacts closed for steam
9
R200
1
K3---B
K3---A
Steam contactor
FIGURE 5
Steam contactor
Primary
8---7
TROUBLESHOOTING
BC14E FLUSH FLOW CHART
L1 L2
A
B
P
P
N
G
N
P13
Open at 176_F (80_C)
Close at 149_F (65_C)
Delime S15
S
S4
P11
Flush disable
Open at 180_F (82_C)
Close at 160_F (71_C)
C
2
R206
6
D
S12
Flush Drain switch
F/D 25
24
D 26
H
2
1
T4
90 sec drain flush timer
8
R206
7
10
R203
6
F
HA
S10
C
S22
5
R203
9
11
R204
3
G
E
13
R203 coil cw drain pump
Flush fill
FIGURE 6
8---8
BC14E
BC14E WATER FILL/MEAT PROBE
S
S1#4
HA
S1#10 S1#22 S1#8
P4 quench
Open 140_F (60_C)
Close 167_F (75_C)
Quench
P12 cold plate
Open 95_F (35_C)
Close 122_F (50_C)
Cooling Fan
208V
L2
24V
S11
F9
F9
2 amp fuse
5
R5
1
8 7 5 6
S14
HLC
Hot Water
Slow Fill
S13
LLC
H2
13
R204
L2
14
10
R204
6
Fast
Fill
FIGURE 7
8---9
TROUBLESHOOTING
BC14E DRAIN ASSEMBLY
Drain
Vent
EC/FAN
WATER
INPUT
C
H
H
MOTOR
COVER
TOP UNIT
DRAIN
PWR
WATER
INPUT
C
H
H
All Drain is supplied by customer
EC/FAN
MOTOR
COVER
BOTTOM UNIT
PWR
DRAIN
Drip pan drain
NOTE: Connection is not vented to drain.
FIGURE 8
8---10
BC14E
BC14E TIMER SETTINGS
TOP VIEW
A
4
3 2
1
L
4
3 2
1
R
SIDE
VIEW
B
Remove dial section
Dial
SIDE
VIEW
C meter
D
Inside if dial section
A) Top view of Timer.
NOTE: The L & R there are two timer adjustments per timer.
B) Side view of timer.
C) Side view with dial section removed. 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.
T2 Steam duty cycle In combi mode.
L) is 375K OHMS Steam ON 45 seconds.
R) is 666K OHMS Steam OFF 80 seconds.
FIGURE 9
T3 One shot steam
NOTE: Set by timer on front panel.
T4 Flush timer.
L) Is 150K OHMS Flush ON 90 seconds.
8---11
This page intentionally left blank.
TROUBLESHOOTING
8---12
CHAPTER 9
BC14E INSTALLATION
BC14E
INSTALLATION SPECIFICATIONS
NOTE: Electrical and water connections must be performed by a qualified installer only.
BC14E
MAXIMUM SHELF LOADING
100 lbs (45.5 Kg)
TABLE 1
PLUMBING SPECIFICATIONS -- BC14E/AA
Water
Water Pressure
Water Connection
Water Regulator Setting
Drainage
Drain Connection
Avg Water Drain Temp.
30 PSI (207 kPa) minimum
50 PSI (345 kPa) maximum
3/4” Hose Hot and Cold Water
Preset to 20 PSI (138 kPa)
Atmospheric Vented Drain
2.00” (50.8mm) Copper
Approximately 160_F (71_C)
TABLE 2
PLUMBING SPECIFICATIONS -- BC14EDS/AA
Water
Water Pressure
Water Connection
Water Regulator Setting
Drainage
Drain Connection
Avg Water Drain Temp.
30 PSI (207 kPa) minimum
50 PSI (345 kPa) maximum
3/4” Hose Cold Water
Preset to 20 PSI (138 kPa)
Atmospheric Vented Drain
2.00” (50.8mm) Copper
Approximately 160_F (71_C)
NOTE: For steam requirements see page 9---4 STEAM CONNECTION for the BC14EDS
TABLE 3
9---1
INSTALLATION
Voltage
208
208
240
240
480
380/220
415/240
400/230
RATINGS -- ELECTRIC APPLIANCES -- BC14E/AA and BC14EDS/AA
Hz Phase Max Load (amps)
L1 L2 L3
Motor
60 1 89 89 --1/2HP 208-240VAC, 50/60 Hz
60
60
60
60
3
1
3
3
52
82
47
23
52
82
47
23
52
---
47
23
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
1/2HP 208-240VAC, 50/60 Hz
50
50
50
3
3
3
25
27
26
25
27
26
TABLE 4
25 1/2HP 208-240VAC, 50/60 Hz
27 1/2HP 208-240VAC, 50/60 Hz
26 1/2HP 208-240VAC, 50/60 Hz
OVEN LOCATION AND LEVELING
OVEN LOCATION
The well planned and proper placement of your oven will result in long term operator convenience and satisfactory performance.
Certain minimum clearances must be maintained between the oven and any combustible or noncombustible construction. See the table below.
In addition, the following clearances are recommended for servicing.
D
D
Oven body sides --- 12” (30cm)
Oven body back --- 12” (30cm)
Left Side Heat Shield
Heat sources should not be near the air vents located on the left hand side of the gas appliance.
Consult the factory for optional protective side heat shield.
BC14E P/N R9527
Oven
Model
BC14E
MINIMUM REQUIRED
CLEARANCES
Right Side Left Side Back
1”
(25.4mm)
4”
(101.6mm)
6”
(152.4mm)
OVEN LEVELING
This oven should be set up in place.
With any stand or oven, be certain that the surface is level, even and solid. A sloped or uneven base may cause the appliance to function improperly.
Minor unevenness can be corrected by adjusting the metal leg feet. The maximum adjustment of the leg feet is 1-3/8” (35mm).
Maximum
Adjustment
1-3/8” (35mm)
Foot
FIGURE 1
Leg
9---2
BC14E
STACKING
WARNING!!
Stacking should be performed by qualified installation personnel only. The appliances are heavy. Take care to use proper tools and techniques when lifting and stacking appliances.
1. Remove the drip pan from the top appliance.
2. Attach the legs or casters to the bottom appliance.
3. Place the top appliance on the bottom appliance. 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.
BC14G Shown
FIGURE 2
Drip Pan
9---3
INSTALLATION
PLUMBING CONNECTIONS
WATER CONNECTION
Connect the appliance to quality water via a pressure hose with 3/4” (19mm) couplings. See
FIGURE 3 for connections. A shut off valve is to be provided adjacent to the oven.
WARNING!!
Operating the appliance without the water regulator installed will invalidate your warranty.
Water must meet the following minimum requirements:
D
D
Total Dissolved Solids (TDS) content will not exceed 30 parts per million.
Water PH must be 7.0 or higher
WARNING!!
The use of poor quality water will invalidate your warranty.
DRAIN CONNECTION
The steam vent assemblies are constructed of 2”
DWV 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 allow 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 with
1.125 I.D. hose.
Use the drain vent assembly and a 2” (50.8mm) pipe for drain connection.
Coupling
Cold Water
BC14E
Water Connections
Rear of Appliance
FIGURE 3
STEAM CONNECTION FOR BC14EDS
Steam supply line is 3/4” NPT. Steam must be clean, dry and potable. A particle screen and bucket trap may be needed and are recommended. 60 lbs per hour is the maximum usage per oven. Steam supply pressure should not exceed 40 to 50 psi. The flow pressure is 1-1/2 to 3-1/2 psi and is set at the steam pressure regulator supplied inside the oven.
Customer supplied
2” (50.8mm) drain waste vent piping
FIGURE 4
Specific water/drain connection for City of Los
Angeles
1. Each drain line from the appliance shall be routed without dips or sags to terminate above the flood level rim of an approved indirect waste receptor.
2. The appliance shall be installed in accordance with the manufacturer’s printed instructions and the LAPC and LAMC, 1999 editions.
3. A backflow protection device shall be installed on the potable water system directly ahead of the appliance. The backflow protection device shall be any of the following: an approved pressure type vacuum breaker installed at least 12” above the highest point of use, a double check valve backflow preventer or a reduced pressure principal backflow preventer.
9---4
BC14E
DOOR ADJUSTMENTS
NOTE: When making door adjustments, always adjust the hinge side first.
1. Swing the door so it just hits or runs into the catch on the left hand side of the door. DO NOT latch the door handle to the catch on the oven body. The left hand side of the door should just be touching the gasket evenly from top to bottom.
Adjusting the Hinges
NOTE: If you need to adjust the hinges, always adjust the top hinge first.
NOTE: The hinges on the door have no adjustment, you can only adjust the hinge on the oven.
1. Adjust the top hinge as follows:
A.) Loosen the three allen head bolts on the top 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
2. Adjust the bottom hinge as follows:
A.) You must remove the weight of the door from the bottom hinge to adjust it. To remove the weight from the hinge, slide a screwdriver head into the gap where the two 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 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 door until the door handle is close to the catch on the oven.
2. Loosen the two bolts holding the latch to the face of the appliance.
3. Adjust the catch from side to side until the head of the catch is centered with the roller.
4. Adjust the catch up and down. There should be a small clearance between the wheel on the door handle and the tooth of the catch on the oven. See FIGURE 5. In most cases the catch will be all the way up.
5. Tighten the two bolts that hold the catch in place.
6. For easy alignment, swing the door close to the catch. Use a felt tipped marker on the door handle to mark the catch position.
7. Adjust the top of the catch in and out. Adjust the top of the catch so that the door closes firmly.
8. Tighten the single catch bolt.
B
A
Door
Oven
C
FIGURE 5
9---5
Adjust for small gap
FIGURE 6
Checking Door Adjustment
NOTE: When the door is adjusted properly, you should be able to close a dollar bill between the door and gasket on all four sides of the door and still be able to pull it out. If you cannot, the door is too tight, and must be readjusted.
1. Check the closing of the door in the steam mode.
2. Next check the closing of the door when the oven is heated to 374_F.
3. The door should close easily in both conditions. If it does not, the door is too tight and must be readjusted.
INSTALLATION
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 out enough to seal the steam leak and does not over tighten the door.
OR:
1. If you look behind the gasket, it is held in place with a metal bar with screws. Change the screws behind the gasket where it is leaking to
10/24 round head screws. Use stainless screws and put NEVER SEAZE on the threads so they won’t bind.
9---6
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