CIB UNIGAS IDEA NG280, Руководство по установке, использованию и обслуживанию

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C.I.B. UNIGAS - M039132CD
35
Calibration of low gas pressure switch
As for the gas pressure switch calibration, proceed as follows:
z
Be sure that the filter is clean.
z
Remove the transparent plastic cap.
z
While the burner is operating at the maximum output, test the gas pressure on the pres-
sure port of the minimum gas pressure switch.
z
Slowly close the manual cutoff valve (placed upstream the pressure switch, see gas train
installation diagram), until the detected pressure is reduced by 50%. Pay attention that
the CO value in the flue gas does not increase: if the CO values are higher than the limits
laid down by law, slowly open the cutoff valve as to get values lower than these limits.
z
Check that the burner is operating correctly.
z
Clockwise turn the pressure switch adjusting ring nut (as to increase the pressure value)
until the burner stops.
z
Slowly fully open the manual cutoff valve.
z
Refit the transparent plastic cover on the pressure switch.
Fig. 48
Adjusting the high gas pressure switch (when provided)
To calibrate the high pressure switch, proceed as follows:
z
remove the plastic cover;
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measure the gas pressure in the network, when flame is off;
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by means of the adjusting ring nut VR , set the value read on step 2, increased by the 30%;
z
replace the plastic cover.
VR