Grant Spira Series - Safety Device Checks for Servicing

80
Primary heat exchanger
Check the shaker unit (located in the
top of the primary heat exchanger) is
operating freely and that the spirals
are moving up and down with two
intermittent vertical motions.
If there is no movement of the shaker
system, isolate the electrical supply and
check that:
• the motor and cam is rotating.
• the cam follower is in contact with
the cam.
• the condition of the cam follower
spring (located in the rear of
the control panel). Replace if
necessary.
Inspect the condition of the FRONT
access panel before re-fitting. Replace
any damaged or worn rope seals if
necessary.
Re-fit FRONT access panel and secure
with the nuts (and washers) previously
removed. Do not overtighten.
11.12 Burner Settings
With the electrical power to the hopper
and boiler Switched on, and the burner
ON/STANDBY switch set to STANDBY,
check that ALL burner settings in the
‘INSTAL’ (Installer) menu are as given
in Section 9.6.
Check the burner control settings match
those set on commissioning (i.e. as
recorded on the Commissioning Report
form), a copy of which was left with the
householder/user.
Refer to Section 9.7 for details of how to
access and check these settings.
Reset the SERVICE timer as follows:
• Go to the ‘CLEAN’ sub menu in the
installer (‘INSTAL’) menu
• Go to the ‘RESET SERVICE’ setting.
• Press button 3 to reset timer to zero.
Refer to Section 9.7.1.3 for further
details on settings.
11.13 Safety Device Checks
The following safety checks must be
made before putting the boiler back into
operation:
11.13.1 Pellet Feed Tube Thermostat
Check operation of pellet feed tube
thermostat. Follow the procedure given
in Section 10.5.1.
11.13.2 Combustion Chamber Door
Switch
Check operation of combustion
chamber door switch. Follow the
procedure given in Section 10.5.2.
11.14 Combustion Checks
To ensure safe and efficient operation
of the boiler, it is essential that the boiler
combustion is re-checked and adjusted
as necessary.
11.14.1 Combustion Chamber
Draught
Check the combustion chamber
draught, and adjust the draught
stabiliser setting as required. Follow the
procedure given in Section 10.9.
11.14.2 Flue Gas Analysis
Check the %CO
2
in the flue gases
and adjust the burner fan setting as
required. Follow the procedure given in
Section 10.10.
To ensure safe and efficient
operation of the boiler it is
important that boiler/burner is
re-commissioning as detailed in
Section 10.
!
WARNING