Final Checks; Maintenance - Riello RX 180 S/PV Instructions D'installation, D'utilisation Et D'entretien

FINAL CHECKS

• disconnect a wire of the minimum gas pres-
sure switch;
• switch on the thermostat/pressure switch TL;
• switch on the thermostat/pressure switch TS;
the burner must stop.
• Disconnect the wire of the ionisation probe;
the burner must stop in lockout.
Make sure that the mechanical locking systems
on the various adjustment devices are fully tight-
ened.

MAINTENANCE

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technician in conformity with legislation and
local standards.
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excessive consumption of fuel and consequent
pollution.
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to the burner, using the main switch of the sys-
tem and close the gas shutoff valve.
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any obstructions or restrictions.
Electrical wiring
Check that the burner and gas train electrical
connections are correct.
Gas leaks
Make sure there are no gas leaks in the following
areas:
- on the meter-burner pipework
- on the mixer/valve connection
- on the burner fastening flange where the seal
is fitted.
Combustion head
Inspect the combustion head and make sure
the fabric is undamaged and does not features
large or deep holes or corroded areas. Also
make sure that no parts have warped as a re-
sult of high temperature.
Electrode unit
Make sure neither the electrodes nor probe fea-
ture marked warping or oxidation on surfaces.
Make sure distances are still in line with those in-
dicated in Fig. (D) page 6, readjusting to the right
values where necessary.
Where necessary, remove oxide from the sur-
face of the probe with abrasive paper.
Gas train
Check valve setting and proportionality of opera-
tion by analysing flue gases. Check the valve/
manifold compensation pipe.
Combustion
Leave the burner operating in steady state for
approx. ten minutes, ensuring that all compo-
nents indicated herein have the proper settings.
Then analyse combustion by checking:
- Percentage of CO 2 (%);
- CO content (ppm);
- NOx content (ppm);
- Ionization current (µA);
- Flue gases temperature at stack.
Adjust burner if combustion values encountered
at the beginning of operation do not meet the
standards in force or, whatever the case, do not
indicate satisfactory combustion.
Note the new combustion values down on a
suitable sheet: they will come in handy when
next checking.
12
(with the burner working):
The burner requires periodic maintenance
carried out by a qualified and authorised
Periodic maintenance is essential for the
reliability of the burner, avoiding the
Before carrying out any cleaning or con-
trol, always switch off the electrical supply
Make sure the air intake areas and ducts
taking the flue gases away do not feature