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1 Cones ­ Time & Temperature ­ Permanent record of each firing Inexpensive 10¢ per coneInexpensive 10¢ per cone ­ Troubleshooting aid Use a Cone Template.

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Presentation on theme: "1 Cones ­ Time & Temperature ­ Permanent record of each firing Inexpensive 10¢ per coneInexpensive 10¢ per cone ­ Troubleshooting aid Use a Cone Template."— Presentation transcript:

1 1 Cones ­ Time & Temperature ­ Permanent record of each firing Inexpensive 10¢ per coneInexpensive 10¢ per cone ­ Troubleshooting aid Use a Cone Template for accuracyUse a Cone Template for accuracy ­ Best way to detect a decalibrating Thermocouple

2 2 Loading the kiln ­ Shelves Size - 2” less than kiln diameterSize - 2” less than kiln diameter ClearanceClearance »Shelves 1” from walls »Shelves 2” from Thermocouple »Ware 2” from walls LocationLocation »First shelf 1” up from floor

3 3 Loading, continued ­ Density of load Hot & Cold spotsHot & Cold spots UniformityUniformity ­ Tall items toward the center ­ Allow space for air flow ­ Stagger ½ shelves if possible

4 4 Cooling and Unloading ­ Run the downdraft vent system ­ Force cooling with a fan Lid closed, peep plugs are inLid closed, peep plugs are in Small fan blowing at controllerSmall fan blowing at controller »Wind velocity ¤  air exchange around kiln ¤  cooling time ­ Unload safely at (or below) 125°F

5 5 Preventive Maintenance ­ Electrical items ThermocouplesThermocouples RelaysRelays ElementsElements ­ Mechanical items Lid brace & hingeLid brace & hinge Section HandlesSection Handles BrickworkBrickwork

6 6 Maintenance, electrical ­ Opening Electrical Box Unplug Kiln orUnplug Kiln or »Disconnect power Phillips screwdriverPhillips screwdriver Remove all screws on Left side of boxRemove all screws on Left side of box

7 7 Maintenance, electrical ­ Thermocouple Replacement Unplug KilnUnplug Kiln Open BoxOpen Box Unscrew Porcelain BlockUnscrew Porcelain Block Loosen Screws and Remove ThermocoupleLoosen Screws and Remove Thermocouple Install in Reverse OrderInstall in Reverse Order

8 8 Maintenance, mechanical ­ Lid Brace & Hinge Anchor padsAnchor pads »Lid »Body

9 9 Maintenance, mechanical ­ Lid Hinge ScrewsScrews Cotter pinCotter pin StrutsStruts ­ Other hardware HandlesHandles LatchesLatches

10 10 Maintenance, mechanical ­ Temporary Brick Repair Unplug KilnUnplug Kiln Insert pins at 30 degree angle to form a ledgeInsert pins at 30 degree angle to form a ledge Space pins every ¾ inchSpace pins every ¾ inch

11 11 Repairs ­ Relays Unplug KilnUnplug Kiln Remove BoxRemove Box Remove BaffleRemove Baffle Label and Remove Relay Control WiringLabel and Remove Relay Control Wiring Unscrew and Remove RelayUnscrew and Remove Relay Install in Reverse OrderInstall in Reverse Order

12 12 Repairs ­ Element Replacement Unplug KilnUnplug Kiln Open Control BoxOpen Control Box Cut Element Close To ConnectorCut Element Close To Connector Remove PinsRemove Pins Carefully Remove ElementCarefully Remove Element Insert New ElementInsert New Element Crimp On Feeder Wire With Barrel ConnectorCrimp On Feeder Wire With Barrel Connector Close and Fasten BoxClose and Fasten Box ­ Use Factory Original Parts

13 13 Checking Voltage ­ Locate receptacle ­ Use insulated probes ­ Insert at slight angle


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