Middleby Marshall PS638 Series, Руководство владельца по эксплуатации и установке

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21
I. PS638G
GAS SPECIFICATIONS
Natural Gas
Maximum Gas Input Rate: 89,000 BTU/Hr (26.1 kW)
Incoming Gas Pressure Required: 6 - 8 inches w.c. (1.5
KPa – 2.0 KPa) (14.9 – 19.9 mbar)
Burner Gas Manifold Pressure: 3.5 inches water column
(0.87 KPa) (8.7 mbar)
Main Injector Size (3X): #39 drill (0.0995”) (2.527mm) /
Marked #39 on injector
Bypass Injector Diameter: #49 drill (0.073”) (1.854mm)
Propane Gas
Maximum Gas Input Rate: 89,000 BTU/Hr (26.1 kW)
Incoming Gas Pressure Required: 11 - 14 inches w.c.
(2.7KPa – 3.5KPa) (27.4 – 34.9 mbar)
Burner Gas Manifold Pressure: 6.0 inches water column
(1.5 KPA) (14.9 mbar)
Main Injector Size (3X): 1.75mm (0.0689”) / Marked
1.75 on injector
Bypass Injector Diameter: #55 drill (0.052”) (1.321mm)
NATURAL GAS PRESSURE ADJUSTMENT
[Factory Pre-Set]
1. Turn the gas supply to the oven OFF. Open the
tap screw in the
MANIFOLD PRESSURE TAP
fitting
one full turn. Connect a silicone tube between
the manifold pressure tap and a digital
manometer. ZERO the digital manometer
before performing the next step.
2. Locate the cap covering the pressure regulator
adjusting screw on the combination gas control
valve. Remove the cap to expose the pressure
adjustment screw. Turn the gas to the oven on
and start the oven.
3. Set the oven temperature to 550
o
F (288
o
C) and
allow the oven to heat to 300
o
F (149
o
C). With
the HEAT percentage on the user interface
showing 100%, check the gas manifold
pressure. For natural gas the pressure should
read 3.5 inch water column (0.95 KPa, 8.7
mbar).
To make any adjustments use either a 5/16”
wide (7.9mm) flat blade screwdriver or a T40
Torx bit is required.
4. If the measured gas pressure is higher than the
required gas pressure setting, then turn the
pressure adjustment screw counter-clockwise
to decrease the gas pressure to the desired
setting.
5. If the measured gas pressure is lower than the
required gas pressure setting, then turn the gas
pressure adjustment screw clockwise to
increase the gas pressure to the desired
setting.
6. Replace the cap removed in step 2 back onto
the combination gas control valve and tighten.
7. Turn the oven off. Turn off the gas supply to
the oven. Remove the silicone tube from the
manifold pressure tap. Turn the screw in the
manifold pressure tap to the closed position.
Make sure the screw is tightened securely. DO
NOT OVER TIGHTEN.
8. Turn on the gas supply to the oven.
9. The oven is now ready for operation.
Manifold
Pressure Tap
Regulator Cap