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IX. PS570/570S FLAME GATE
All PS570/570S ovens produced for Pizza Hut USA through
8/00 were equipped with an adjustable flame gate at the
end of the burner tube. The purpose of the flame gate was
to direct heat towards the entrance end of the oven to bet-
ter suit the customers cooking needs.
PS570S ovens produced 9/00 or later, as well as all PS570G
ovens, are not equipped with the flame gate. The introduc-
tion of the modulating gas system to these ovens, as well
as improvements to the customers air finger configuration
and baking specs, make the flame gate unneccessary on
these ovens.
A. Part Number Reference - Flame Gate
Part No. Description
35210-0555 Flame gate
35210-0511 Adjustment rod
35210-0510 Clamp
B. Flame Gate Orientation
To check the position of the flame gate, view it through
the ovens window. See Figure 53. The gate must
point towards the EXIT end of the oven. Note that this
directs the flame from the burner tube towards the EN-
TRANCE end of the oven, as described above.
All ovens were originally shipped from Middleby Marshall
with the gate pointing to the right. This is because all
ovens were shipped with left-to-right conveyors. If the
conveyor direction of one of these ovens is reversed in
the field, the flame gate should be repostioned as fol-
lows:
Loosen (do not remove) the two 7/16 hex bolts on
the clamps that hold the adjustment rod in place.
Insert a #2 Phillips-head screwdriver into the hole
in the rod as shown in Figure 53. Swing the handle
of the screwdriver to rotate the rod and move the
flame gate. You should position the gate as far as
possible towards the EXIT end of the conveyor as
shown.
Remove the screwdriver. Tighten the two screws
to hold the clamps in place.
Figure 53
PS570/570S flame gate adjustment
Direction of
conveyor travel
Direction of
conveyor travel
LEFT-TO-RIGHT conveyor travel
(factory setting)
RIGHT-TO-LEFT conveyor travel
(factory setting)
Gate points to
RIGHT (exit)
end of oven
Gate points to
LEFT (exit)
end of oven
Metal clamps
hold rod in
place
7/16 hex
bolts (2)
Rotate screwdriver
handle to reposition
flame gate
SECTION 3 - SERVICING COMPONENTS