Middleby Marshall PS360G Gas, Owner'S Operating And Installation Manual

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17
Figure 2-20. Burner Components
F. Adjusting the Minimum Pressure Setting
1. Disconnect pressure feedback connection (if
applicable).
2. Connect a suitable pressure gauge to pipe line or to
outlet pressure tap of gas control concerned, to
measure burner pressure (measuring point must be
as near to burner as possible).
3. Disconnect electrical connection of the Moduplus®.
4. Energize operator, set control in operation and wait until
an outlet pressure is recorded on pressure gauge.
5. If minimum rate pressure needs adjustment, use an 5
mm wrench to turn adjustment screw for minimum
pressure setting (clockwise to increase or counter-
clockwise to decrease pressure), while holding the 8
mm wrench and 8 mm adjustment nut in place, until the
desired minimum outlet pressure is obtained. The
correct value to adjust the by-pass pressure is shown in
Table 1-4.
6. Check if main burner lights easily and reliably at
minimum pressure.
7. Reconnect pressure feedback connection (if applicable).
8. Close pressure tap screw.
G. Checkout
After any adjustment, set appliance in operation and observe
through a component cycle to ensure that burner system
components function correctly.
NOTE:
The installer
MUST
verify oven operation prior to
putting oven into service.
H. Maintenance
It is recommended to check yearly the minimum and the
maximum setting and readjust them if necessary.
I. Gas Train with Orificed By-Pass
For the Gas Trains that contain the Maxitrol Modulation
Valve and an mushroom spud orifice inside the by-pass
tube, no adjustments are required.
BURNERS
BURNER
ORIFICES
GAS MANIFOLD
GAS VALVE
AIR INTAKE BOX
GAS INLET