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Airtight gas convectors<br />
SYSTEMA S.p.A.<br />
3.14 Utilization of the weekly programmer (optional)<br />
1) Push the programmer disk sectors corresponding to the<br />
period of operation desired towards the center (for example,<br />
from 08.00 AM Monday morning until 20.00 PM Tuesday).<br />
The red sector that appears at the edge of the disk indicates<br />
the period of device starting.<br />
2) Set the right time by rotating the white reference triangle at<br />
the center of the programmer disk clockwise.<br />
3) When setting starting at 08.00 AM Monday and switch-off<br />
at 20.00 PM Tuesday, the device will always start and stop<br />
at the same time and day, week after week.<br />
Draw 30<br />
3.15 Malfunctions and solutions for pilot flame devices (Mod. K21,<br />
K28, K40, K55, K28V, K40V, K55V)<br />
'()(&76 &$86(6 62/87,216<br />
1. The burner pilot flame fails to<br />
light.<br />
a) There is no gas or the pressure is a) Check the supply pressure on the<br />
too high.<br />
valve (5).<br />
b) There is no electrical spark b) Check the spark plug, cable and<br />
discharge on the burner.<br />
piezoelectric element.<br />
c) The pilot flame nozzle is clogged<br />
or inadequate to the type of gas<br />
being used (Methane or LPG).<br />
c) Replace using original spare<br />
parts.<br />
2. The burner pilot flame lights but<br />
goes off when the dial is released.<br />
3. The main burner flame goes off.<br />
a) The dial (1) has been released<br />
before ten seconds have passed.<br />
b) The thermocouple has oxidized.<br />
c) The solenoid valve coil is<br />
malfunctioning.<br />
a) The gas pressure reaching the<br />
nozzle is too high.<br />
b) The wrong type of nozzle has<br />
been used.<br />
c) The flue gas expulsion pipe has<br />
not been perfectly connected<br />
between the cast-iron casting and<br />
the external anti-wind grille.<br />
d) The anti-wind grille has been<br />
clogged.<br />
a) Keep the dial pressed down for<br />
more than ten seconds.<br />
b) Replace using original spare<br />
parts.<br />
c) Replace using original spare<br />
parts.<br />
a) Adjust the pressure to the rating<br />
plate values using the pressure tap<br />
(4).<br />
b) Replace using the right type of<br />
nozzle for the type of gas being<br />
used.<br />
c) Check the connection seal.<br />
d) Clean the grille.<br />
35<br />
Rev. 05IT0112-1