Section 12: Servicing
Page 54
12.1 General
It is essential that Grant Vecta boilers are serviced at regular intervals
of no longer than 12 months OR when ‘Service’ is shown on the
burner control panel display – whichever comes FIRST.
The burner will automatically indicate ‘Service’ on the burner control
panel display once the pre-set period of pellet feed auger run time
(‘Hours Service’) is achieved. Refer to Section 9.6 for details on how
to access and check this setting in the boiler control parameter menu.
This interval is based on the auger running time, i.e. the actual
quantity of pellets used based on the pellet feed auger rate and pellet
delivery settings. Refer to Section 9.7 for details on how to access and
check this setting in the boiler control parameter menu.
the ash pan (located inside the combustion chamber) MUSt
be periodically emptied by the user. this simple task must be
carried out when indicated by the Remote Grant Logo indicator,
located within the house, flashing (fast flash).
Refer to Sections 1.5 and 1.6.
!
CaUtiOn
the amount of ash produced varies between different pellet
brands and this will affect the frequency of cleaning and
maintenance required.
nOtE
!
Servicing and replacement of parts must only be carried out by
a Grant Trained installer, or Grant Service Engineer, who has
successfully completed the Grant Vecta wood pellet boiler training
course.
Details of every service should be entered in the Service log section
of the user guide.
A multi-purpose tool is supplied with the boiler for servicing and
cleaning. This is used for the following functions:
•
As the door catch handle – required to open the combustion
chamber door
•
As the ash pan carrying handle – required to remove the ash pan
from the boiler*
•
To open the brazier catch
•
To remove the brazier front plate
•
To remove the brazier base plate
•
To remove the brazier cotter pin
The multi-purpose tool is hung on a hook located on the panel to the
left of the combustion chamber door. Always replace the tool back on
this hook after use to ensure it is available when next required.
* An ash pan carrying handle is also supplied with the boiler. This
must be used in conjunction with the multi-purpose tool, to support
the opposite end of the ash pan, when removing it from the boiler.
Refer to Section 12.6.5.
12 Servicing
12.2 Checks before Servicing
Before starting any work on the boiler, or on the pellet storage
and supply installation, please read the health and safety
information in Section 15.
!
WaRninG
BEFORE starting any service work on the boiler installation:
•
Set the ON/STANDBY switch, on the boiler control panel, to
STANDBY. If the boiler was operating, wait for it to shut-down and
‘STANDBY’ is shown on the burner control panel display, before
proceeding further.
•
Isolate the electrical supply to the boiler and remove the fuse
from the fused spur.
12.3 Heating System
Open the hinged hopper lid.
Undo the two screws (one on each side) and remove the access
cover from the top of the boiler. Refer to Figure 11-2.
Remove the top access cover from inside the top of the boiler.
Check the boiler for any indication of leaks from:
•
Flow and return connections
•
Manual air vent. Refer to Figure 12-1.
Remake any joints and re-check tightness of any fitting that may be
leaking.
If the boiler is part of a sealed heating system, check the following:
•
System pressure
•
Pressure relief valve operation
•
Expansion vessel air charge pressure (when the system pressure
is zero)
Re-fill and vent the system to the required pressure. Refer to Section
6.
On either sealed or open-vented systems:
•
Inspect and clean the in-line magnetic filter in accordance with
the filter manufacturer’s instructions.
•
Ensure that adequate corrosion protection is present in system.
Figure 12-1:
Location of manual air vent (water connection to wash
system removed for clarity)
