Surface Burner Adjustments - Viking VGR30 Service Manual

To gain access to the surface burner adjustments:
1. Remove the grates, burner caps, burner bowls, and
grate supports.
2. Locate the air shutter "A" and loosen screw "B" that
holds the air shutter in place.
3. Remove the drip tray, allowing you work space to
adjust the orifice hood "C".
4. Replace the grate support and burner bowls (this
allows for correct air flow, as in normal use).
5. Light each burner by rotating the burner valve shaft
"D" to high position.
6. Use a ½" deep socket to adjust the orifice hood on
Nat. gas only (LP tighten to fixed orifice); turn
clockwise to decrease the flame and counter
clockwise to increase the flame.
7. With the proper flame height, adjust the air shutter
"A" to obtain a blue flame (with no yellow tipping)
that sits on the burner at the burner ports.
a) Open the air shutter gap to eliminate
yellow tipping.
BURNER ASSEMBLY

SURFACE BURNER ADJUSTMENTS

16
b) Close the air gap to prevent a noisy flame
that lifts off the burner ports.
8. Turn the surface burner off.
9. Replace the drip tray.
10. Remove the grate support and burner bowls.
11. Tighten the air shutter screws "B".
12. Replace the grates, burner caps (if applicable),
burner bowls and grate supports.
13. Relight each burner and turn to the low flame
setting.
14. Remove knob.
15. Insert a narrow, flat blade screwdriver into the
hollow shaft of the surface burner valve, and
engage the slotted low flame adjustment screw.
The low flame should be a small flame the comes
just to the edge of the burner rim. Rotate the
adjusting screw "E" clockwise to lower the flame
or clockwise to increase the flame. Turn the burner
off and relight several times, turning to the low
position. The flame should light at every port each
time. Readjust as
LOW FLAME ADJUSTMENT
needed.