Blue Seal Evolution G504, Installation And Operation Manual

Page: 25 / 31

23
Oven
Main Injector:
a. With the gas supply turned off at the main supply,
unscrew and remove the 6 screws securing the lower
lintel to the front of the oven. (See Fig 31).
b. Remove the lintel from the oven.
c. Open the oven door and remove the cast oven sole plate
from inside the oven.
d. Remove the single screw securing the oven burner to the
main burner bracket in the oven and remove the main
burner from the oven.
e. The main injector will now be exposed and can be
unscrewed and removed using a 13 mm (
1/
2
” A/F)
spanner.
f. Remove the main injector (See Fig 32) and replace with
the correct size injector. (Refer to the ‘Gas
Specifications’ table at the rear of this section).
Setting the Main Burner Aeration Gap
i. With the main burner removed from the oven, check
the aeration gap on the shutter fitted to the main
burner.
ii. Ensure that the gap is set for the type of gas being
used. Refer to the ‘Gas Specifications’ table at the
end of this section for the correct figures.
iii. To adjust the aeration gap, slacken the clamp screw
and rotate the aeration slide to the required position
and tighten off the clamp screw. (Refer to Fig 33).
g. Refit the main burner to the oven and secure to the main
burner bracket with the single screw.
Pilot Injector:
a. To remove the oven pilot injector, ensure that the cast
oven sole plate has been removed from inside the oven.
b. From inside the oven, unscrew the hex nut holding the
pilot supply tube to the rear of the pilot burner. (Refer
to Fig 34).
c. Withdraw the pilot injector from the rear of the pilot
burner.
d. Replace the pilot injector with the correct sized pilot
injector for the gas type being used (Refer to the ‘Gas
Specifications’ table at the rear of this section) and
re-connect the pilot supply tube to the rear of the pilot
burner. (Refer to Fig 34).
e. Refit the sole plate to the oven.
Oven Low Fire:
a. When changing to a different type of gas, to change the
oven ‘LOW’ fire adjustment, remove the gas control knob
from the front of the control panel.
b. The low fire adjustment screw on the gas control valve
(See Fig 35) should be replaced with the low fire
adjustment screw shown in the ‘Gas ‘Specifications’ table
for the gas type being used.
NOTE: The ‘Low Fire Screw’ should be sealed with coloured
paint on completion of the low fire adjustment.
Gas Conversion and Specifications
6 screws
Shown with door removed
for ease of viewing
Fig 31
Fig 34
Pilot Burner
Thermocouple
Pilot Burner
Supply Tube
Fig 32
Main Injector
Static Oven
Burner Adjustment
Screw
Aeration
Slide
Fig 33
Fig 35
Low Fire
Adjustment
Screw