Jackson Gas Heated Door-Type Dishmachines Tempstar TGP - Manual (Page 11)

ELECTRONICS CONTROL BOARD (ECB)
9
The Control Board regulates the temperature of the water in the heat exchanger system. This water is also used as the rinse water
for the rinse cycle of the dishwasher. It does this by regulating the flame of the burner by increasing or decreasing the voltage to the
modulating valve. The modulating valve, in turn, increases or decreases the gas pressure going to the burner manifold depending on
the voltage it is getting from the control board. From time to time it may be necessary to check or adjust the setting of this water tem-
perature. To test the setting or to reset the temperature of the rinse water, make sure the unit is on and the green LED on the board is
flashing steadily. Insert the NEGATIVE (Black/Common) probe of a multi-meter set on DC volts in the BLACK test point (see above).
Insert the POSITIVE (Red) probe of the multi-meter in the BLUE test point. The reading will indicate the set point temperature. The fac-
tory setting is 4.25 VDC which corresponds to 198
#F (92#C). Adjustments to the set point are made on the BLUE POTENTIOMETER
directly below the BLUE test point. With a very small slotted screwdriver rotate the trim screw on the potentiometer clockwise (CW) to
increase the voltage (and Temperature) and counterclockwise to decrease.
Testing and Setting the Set Point Temperature