Unox MINDMaps BAKERTOP, Service Manual

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
Set the multimeter to μA DC and run the oven by setting time = infinite and temperature = 260 °C
(500°F);

Read the ionization current.
The flame detection plug is fine if the measured current is stable and between 1,5 to 10 μA.
Blower speed measurement
To measure the speed of the blower, set the multimeter to Hz. measure the frequency of the blower
between the external pins that are close to the edge of the Powerboard on the sockets P37 or P38.
To calculate the blower speed, multiply the measured value by 30.
The blower speed test should be performed using gas fumes test 1 and gas fumes test 2 to get the
maximum and minimum value respectively. Gas fumes test 1 and 2 correspond to the maximum and
minimum power of the oven respectively.
While performing the measurement in gas fumes test 2 the expected value of Hz should be a value that is
higher at the beginning and then step by step decreases down to a lower value.
dOUBLE IgNITEr KIT
Figure 22
Double igniter with contactor system European and US markets have different kits due to the
technical differences of the gas systems. For European markets, the XRF011 kit with the
contactor integrated is available. This kit should be used to upgrade all the gas ovens
experiencing backfiring problems. For the US market, the kits XRF009 and XRF010 are available.
The XRF009 is for floor standing models whilst XRF010 is for countertop models. For the US
market the contactor is already included.
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