599390
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5 SERVICING
5.1 Pyrolytic Ovens
5.1.1 Electronic Programmer
Old Version New Version
EL1000
The Siebe
®
electronic Programmer is the primary control and monitor device and incorporates the
following features:
• Oven temperature control.
• LED display.
• Clock 24 Hour.
• Minute minder & automatic baking function.
• Self clean function with door lock/unlock input.
• Baking mode selection.
• EEPROM unit to store and back up electronic data.
• Single handed operation.
•
0
C indication.
• Temperature probe input.
5.1.1.1 Operating Principles
The programmer is designed to detect various input control signals from the following:
• Oven temperature probe ST1
• Variable Temperature Control ST2
• Door status microswitch ST3
• Oven mode selector switch ST4
and outputs these signals to the following relays and triac, supplying power to the various cooking
circuits:
• Thermostat Relay 1
• Oven Fan Relay 2
• Lock/Unlock Relay 3
• Cooling Fan Relay 4 (New version programmer)
• Cooling Fan Triac 1 (Old version programmer)
Supplied with mains 240 volts, the onboard transformer reduces the working voltage of the
programmer to 15 volts AC.
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