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15
OVEN THEORY OF OPERATION
LUI
- The Large User Interface (LUI) is powered by the OMC by the RS 485 cable. The main
power button is located on the front face of the LUI. The conveyor(s) and temperature of the oven
is controlled through the LUI. Factory settings are programmed for the oven size, VFD/Non VFD,
cool down mode, and Gas/Electric, etc. To change these refer to the Oven Operator Controls sec-
tion of the Installation & Operation Manual. For a Standard Oven it will also display the main fan
amps. The LUI will display error messages and maintenance alarms. There are twelve (12) menu
presets for predetermined time and temperature settings. The screen can be locked to prevent un-
wanted changes.
M1 -
The Main Motor for standard ovens is a PSC, single phase, capacitor run motor and
has an internal centrifugal switch (S2). The motor is dual voltage and reversible. The voltage to
power the motor comes from the R1-2. For world ovens M1 is a three (3) phase inverter rated mo-
tor with an internal S2. It gets power from a variable frequency drive (VFD) which is then turned
on by the OMC. The main motor (M1)will continue to operate for approximately thirty (30)
minutes or until the oven temperature is less than 225°F/108°C (+/-3°F/2°C) after the oven is
turned off. There are no user serviceable parts in the motor, and the bearings are permanently lu-
bricated.
1) P1- Not Used
2) P2- RS-485 Cable To OMC1
1) +5V
2) 485-
3) 485+
4) Ground
3) P3- RS-485 Cable To OMC2
1) +5V
2) 485-
3) 485+
4) Ground
4) P5- Ground
5) P17- Elan Programming
5 4 1 2 3
