Servicing The Burner; Pilot Assembly; Catalysts - FocalPoint F500116 Instrucciones De Instalación

17.0 SERVICING (continued)
3. Remove the glass door assembly (4 screws) and clean
carefully. Detatch the burner front cover plate by removal of
the four retaining screws.
4. Inspect the burner and the catalysts and clean if necessary
with a soft brush.
5. Disconnect the gas supply.
6. Undo the four screws retaining the burner support brackets to
the base and rear of the firebox.
7. Remove the burner unit, strip off the burner pipes and clean
thoroughly.
8. Clean the in-line restrictor, pilot assembly and the burner
tube. Do not attempt to remove the pilot injector as this can
cause damage.
9. Re-assemble components.
10. Turn on the gas supply and leak test. Check pilot and
burner for good ignition.
11. Refit the glass door assembly, ensuring a good seal.
12. Refit the decorative frame as detailed in section 15.0
13. Check the purpose provided ventilation is unobstructed.
14. Light the fire and test setting pressures.
15. Check safe operation of the appliance.
For specific servicing instructions, see relevant sections.

18.0 SERVICING THE BURNER

WARNING: ANY CHANGE TO THIS HEATER OR ITS
CONTROLS CAN BE DANGEROUS.
First, remove the front section of the frame (as per section 15.0), the
glass panel. Detatch the burner front cover plate by removal of the four
retaining screws. Disconnect the gas connection inside appliance. The
gas connections to the gas valve can now be released. Undo the four
screws retaining the burner brackets to the base and rear of the firebox.
The burner may now be removed.
Remove the pilot and main burner pipes and blow through to dislodge
any debris. Now remove the inline restrictor and blow through to make
sure it is entirely clear.
Unclip the pilot lint gauze and clean with a soft brush. Clean the exterior
of the pilot assembly with a soft brush and blow through the flame ports
on the pilot head. Check the aeration holes are free from lint or dirt. The
pilot assembly can be removed if required by disconnecting the
electrode HT lead, gas pipe, thermocouple lead and unscrewing the
mounting screws and lifting away. The pilot assembly is a non-
serviceable item and should not be taken apart. Aeration holes must be
absolutely clear internally for proper operation. NEVER MODIFY OR
BEND THE THERMOCOUPLE TO MAKE THE PILOT STAY ALIGHT.
Modifications are dangerous and can have serious unseen effects on
safety. If the pilot will not stay lit there is a problem with dirt, the gas
supply to it, or the thermocouple needs replacement.
The gas valve is a non-serviceable item. If this needs replacement,
remove the indicator plate then the securing screw holding the valve
bracket in place, remove all pipe unions, and the complete valve.
Replacement must be original manufacturers parts.
Re-assemble in the reverse of removal. Ensure setting pressures are
as stated in Section 3; Appliance Data.

19.0 PILOT ASSEMBLY

WARNING: NO ADJUSTMENTS ARE TO BE MADE TO THE
ODS PILOT SYSTEM. TAMPERING WITH THIS SYSTEM
CAN BE EXTREMELY HAZARDOUS.
Remove the casing, glass panel and burner unit (as per servicing sec-
tion), lint arrestor and pilot unit by using a screwdriver to remove the
retaining screws.
Clean the pilot assembly with a soft brush and blow through. Check the
aeration holes are free of any dirt or lint. Clean thoroughly internally,
the connection can be removed from the base of the pilot unit using two
spanners to make cleaning easier. Do not damage or try to dismantle
the pilot injector.
The unit is factory set and the only check necessary is to ensure the
spark gap is correct. See specifications for gas setting.
NEVER MODIFY OR BEND THE THERMOCOUPLE TO MAKE THE
PILOT STAY ALIGHT. If the pilot will not stay lit there is a problem with
dirt, the gas supply, or the thermocouple needs replacement.
Modifications are dangerous and can have a serious unseen effect on
safety and therefore MUST not be done. Replacements must be origi-
nal manufacturers parts. Re-assemble in the reverse of removal.
Ensure setting pressures are as stated in Section 3; Appliance Data.

20.0 CATALYSTS

It is recommended that the catalysts are inspected for signs of damage
and dirt during routine servicing procedures. The expected life of the
catalysts is in excess of 11,000 hours (10 years of normal use). After
this time the catalyst should be replaced.
If there are any deposits of dirt or soot on the catalysts they should be
cleaned with a soft brush and a vacuum cleaner. If removed for cleaning
ensure the seals are in good condition before replacing the catalyst.
New seals will usually be required.
The performance of the catalyst may be checked using a combustion
gas analyzer as follows.
Important: The temperature of the gases emitted by the catalytic
converters is in excess of 700
may damage some types of gas analyzers. If in doubt consult the
equipment manufacturer.
Ignite the fire as per the operating instructions, and run at maximum
setting for 15 minutes. Position gas sample probe directly over a cata-
lyst via the outlet grille, on top of the appliance. Record the carbon diox-
ide (CO2) concentration and then the carbon monoxide (CO)
concentration as displayed by the analyzer - also noting the units in
which the values are expressed. Most analyzers display carbon dioxide
(CO2) concentrations in percentage (%) terms and carbon monoxide
concentration in parts per million (ppm) terms.
In order to calculate the combustion ratio for the appliance (CO/CO2) it
is first necessary to express both gas concentrations in terms of per-
centage. To convert from parts per million (ppm) to a percentage (%)
divide the ppm figure by 10,000. Examples : 35ppm = 0.0035%, 15ppm
= 0.0015%, 5ppm = 0.0005%.
8
o F. Measuring gas of this temperature