XLT Ovens AVI, Руководство по запчастям и обслуживанию

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OVEN THEORY OF OPERATION 13
1) CN2- 24 VDC
1) +24 VDC Ma in Power To OMC
2) +24 VDC
3) +24 VDC
4) -24 VDC
5) -24 VDC
6) -24 VDC Ground To TS2
2) CNl - Line Volta ge
1) Neutral
2) Not Used
3) Line Volta ge
PS - The Power Supply rectifies line voltage to 24 VDC, and supplies power to the OMC and S2.
A 4 amp fuse is used to provide over current protection, which is mounted on the PS itself There
are no other fuses used anywhere else.
PU - The Pick-Up is physically mounted within M2 and utilizes hall effect technology integral to
the M2 to monitor the rotation speed. The hall effect signal is transmitted to the OMC, which con­
verts it into linear travel speed of the conveyor.
Rl - The Oven Fan Motor Relay is used as a remote switch to handle the higher amp load of Ml.
S2 - The Centrifugal Switch is a SPDT switch physically mounted inside Ml. When Ml comes up
to full speed, S2 closes and sends a 24 VDC signal to the contactors. It functions as a safety fea­
ture to prevent burner operation if the Ml fails to rotate.
S3 - Standard Ovens- The High Limit Switch for standard ovens is a bi-metal, NC, SPST switch
physically mounted in the side panel of the Bake Chamber. Its purpose is to provide fail safe op­
eration. If the temperature of S3 exceeds 600 ° F, it opens and interrupts line voltage to all compo­
nents.
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1) Thermocouple 1 ( +) - Yell ow
2) Thermocouple 1 (-) - Red
3) Thermocouple 2 ( -) - Red
4) Thermocouple 2 ( +) - Yell ow
5) COM- Line Volta ge
6) N.0.- Switched Line Volta ge
7) L2- High Limit Power
8) L 1- High Limit Power
S3 - World Ovens- The High Limit Switch for world ovens is an electronic, SPST switch physi­
cally mounted on the side panel of the Bake Chamber. Its purpose is to provide fail safe operation.
When the oven receives power, S3 closes. If the actual oven temperature exceeds 650
°
F the yel­
low LED will not illuminate. A red LED will flash and S3 opens to interrupt line voltage to all
components. There are two (2) thermocouple inputs to this device. If the delta exceeds 20
°
C be­
tween the thermocouples, the yellow and red LED will alternate flashing and S3 opens.
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