Grant VORTEX Pro Combi Series User Manual

44
Boiler Servicing
11 Boiler Servicing
To ensure efficient operation of the
boiler it is recommended that it is
checked and serviced as necessary at
regular intervals. The frequency of
servicing will depend upon the particular
installation conditions and usage, but in
general once per year should be
adequate.
Servicing and replacement of parts
must only be carried out by a suitably
qualified engineer.
8. With the fuel supply valve closed,
clean/replace the filter element and
clean the filter bowl.
Braided flexible fuel supply hoses as
supplied with the boiler should be
replaced annually when the boiler is
serviced. If long-life hoses have been
installed, these should be inspected
annually. If in doubt replace the hoses.
In any event, these hoses must be
replaced every five years.
11.3 Cleaning the Boiler
The procedure for cleaning the boiler is
as follows:
1. Remove the nuts and washers
securing the front cleaning door and
withdraw the door. Take care - it is
heavy.
2. Remove the baffles as shown in
Figure 11-1, Figure 11-2 and Figure
11-3.
3. Remove all deposits from the baffle
plates and all the boiler internal
surfaces using a stiff brush and
scraper if necessary.
4. Check the condition of the flue,
clean as necessary.
5. Check the condition of the front
cleaning door seal and replace if
necessary.
6. Replace the baffles, ensuring they
are correctly fitted. See Figure 11-1,
Figure 11-2 or Figure 11-3, as
appropriate. Pull out the spiral
turbulators from the heat exchanger
tubes. See Figure 11-4.
7. Clean the turbulators using a stiff
brush.
8. Test the heat exchanger condensate
drain by pouring water into one of
the lower tubes and observe
whether the water discharges from
the 22 mm condensate outlet.
Replace the turbulators.
9. Replace the front cleaning door,
ensuring the seal is in good
condition and secure it in position
with the nuts and washers
previously removed. Tighten to form
a seal.
10. Remove the condensate trap and
check that it is not blocked and is
operating correctly, i.e. the float is
free to move. Clean the trap and
float as required.
11. Check that the boiler condensate
outlet is unobstructed. Clean if
necessary.
!
WARNING
!
NOTE
!
CAUTION
Details of every service should be
entered in the Service Log, in the
Boiler Handbook.
This information may be required to
validate the Grant extended warranty.
Before starting any work on the
boiler, or fuel supply please read the
health and safety information given in
Section 14.
11.1 Checking Before Servicing
The following sequential checks should
be made before any servicing:
1. Check the flue terminal and ensure it
is not blocked or damaged.
2. Run the boiler and check the
operation of its controls.
3. Ensure that all water/fuel system
connections and fittings are sound.
Remake any joints and check the
tightness of any fittings that may be
leaking.
4. The boiler is part of a sealed central
heating system, check the system
pressure, check the operation of the
pressure relief valve and check the
expansion vessel air charge. See
Section 7.
5. Refill, vent and re-pressurise the
system as necessary. See Section 7.
6. Check that any ventilation openings
are adequate and are clear. See
Section 9.
7. Remove any sludge/water from the
fuel tank by opening the sludge
valve at the lower end of the tank.
Before servicing, set the boiler
On/Off switch to Off, isolate the
electricity supply and close the fuel
supply valve.
Allow the boiler to cool.
The data label on the inside of the case
side panel will indicate the fuel used and
the nozzle fitted.
11.2 Dismantling Prior
to Servicing
The procedure for dismantling the boiler
is as follows:
1. Remove the front panels.
2. Carefully lift up the expansion vessel
and remove it from the boiler. Place
it on the floor, taking care not to
strain the flexible pipe.
3. Disconnect the flexible air tube from
the burner.
4. Remove the burner fixing nut (top of
mounting flange) and withdraw the
burner. If required, disconnect the
flexible oil line(s), use a suitable
container to prevent any oil spillage.
With two flexible hoses connected to
the burner, identify (mark if
necessary) which is the inlet and
return if they are to be disconnected.
!
NOTE
The condensate trap and condensate
outlet must be checked on every
service and cleaned as necessary.
The end cap is sealed to the trap
body. Do NOT attempt to remove it
for cleaning.
!
WARNING

Grant VORTEX Pro Combi Series Specifications

General

Brand	Grant
Model	VORTEX Pro Combi Series
Category	Boiler
Language	English