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10.20
If the pyrometer indicates a temperature other than 290° ± 10°C and the METHANE
HEAT lamp is cycling, the methane reactor is probably at proper operating
temperature and either the pyrometer or the thermocouple is defective.
(a)
Disconnect the thermocouple electrical disconnect between the methane
reactor and the pyrometer. Measure the DC voltage output of the
thermocouple at the female disconnect leading to the methane reactor. It
should read 14.0-MV ± 0.5-MV if the unit is at operating temperature. If not,
replace the thermocouple.
(b)
If after replacing the thermocouple your MV reading is greater or less than
14.0-MV, the temperature control should be adjusted. To do this, rotate the
screw adjustment clockwise to decrease the temperature and counter
clockwise to increase it. Observation of the METHANE HEAT lamp while
making the adjustment will indicate whether the unit is heating or not. Be
certain to make minimal adjustments, particularly when making counter
clockwise adjustments to avoid inadvertent screw travel overrun.
NOTE:
tubing connected to the inlet fitting of the methane reactor and also
remove the copper coil connected to the outlet fitting while the unit is still
mounted within the generator. Follow the instructions in Section 10.20,
without removing the unit.
(c)
If the pyrometer indicates a temperature other than 290°C ± 10°C and the
thermocouple output is about 14.0-MV, replace the pyrometer.
To gain access to the temperature control, remove the copper
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