Alto-Shaam Vector VMC-F3E, Руководство по обслуживанию

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T
ROUBLESHOOTING
Vector® F Series
▪
Service Manual
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MN-46896
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Rev 01
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07/20
59
Continued from previous page
Verify the oven has the correct supplied voltage
and phase.
No
Correct the supplied facilities voltage and
phase, then retest.
Yes
Is the chamber on and calling for heat?
No
Turn the chamber ON.
Yes
Locate the 4-wire VFD connection on the control
board. Chamber 1 P2, Chamber 2 P12, Chamber 3
P13, and Chamber 4, P14. Measure DC voltage
across the yellow and orange wire. Is there
2-5VDC?
(If motor is set to 100%, voltage should be 4.4VDC,
at 20% it should be 2.5VDC.)
No
Check the VFD cable connector pins are all
secure and fully depressed into the Molex
connector. Make sure the connector is
properly at the control board. Replace the
control board.
Yes
Disconnect the Molex connector between the VFD
and motor. Is there voltage output from the VFD
to the motor?
No
Replace the VFD.
Yes
Check the red and blue wires on the VFD
connection at the control board. Is there a HZ
signal coming back between the red and blue
wires?
(100% fan speed should haver a signal of 778 Hz,
50% fan speed would be 530 Hz.)
No
Replace the motor.
Yes
Is airflow present coming through the jet plates?
No
Cool down oven to a safe temperature and
remove jet plates. Inspect the upper and
lower plates for cleanliness and obstructions.
Yes
The motor is running.