GENERAL
The griddle and its parts are hot. Use care when operating, cleaning or servicing the griddle.
INTRODUCTION
This Service Manual covers specific service
information related to the models listed on the front
cover and built after March 2010.
Procedures in this manual will apply to all 900RX
models unless specified. No procedure in this manual
will require the removal or raising of the griddle plate.
Pictures and illustrations can be of any model unless
the picture or illustration needs to be model specific.
MSA griddles have a standing pilot that must be lit
manually. One pilot services two burners via a flame
tube between the burners. The 900RX utilizes a spark
ignition system that has a 'momentarily on' switch -
that means the switch must be held down for sparking
to take place, and it ceases sparking when released.
The MSA and 900RX have BASO® pilot safety valves
that must be pressed to allow gas to feed the pilot
burner. For the 900RX, the pilot buttons must be
pressed at the same time the power switch is pressed
in order to light the pilot.
INSTALLATION
Generally, installations are made by the dealer or
contracted by the dealer or owner. Detailed
installation instructions are included in the Installation
and Operation Manual that is sent with each unit.
However, it should be noted that an improperly
installed unit, especially an unlevel unit can lead to
premature electrical component failures. A unit that is
higher in the front will cause the flue gases to vent
improperly and gather in the front near the electrical
components. All models must be installed with an
externally mounted regulator.
OPERATION
Detailed operation instructions are included in the
Installation & Operation Manual sent with each unit
and are also available at WWW.VULCANHART.COM.
The 900RX models feature an electric ignition system
that is controlled by a momentary power switch. The
power switch turns the electric ignition system off and
on only and will only supply power to the igniters when
held down in the ON position. The burners and pilots
will continue to work with the power switch in the OFF
position until the gas supply to the unit is cut off or the
griddle gas shut-off valve is turned to the OFF position.
The pilots are monitored by thermocouples and pilot
safety valves. If the pilot goes out, the safety valve will
shut-off the gas supply to the pilot and main burners.
In the event of a failure of the electronic ignition
system, it is possible to ignite the pilots with an outside
source (such as a lit taper). You will have to reach
under the front of the unit and through the pilot cutout
to ignite the pilots while again depressing the
corresponding red button.
CLEANING
Detailed cleaning procedures are included in the
Installation & Operation manual sent with each unit.
SPECIFICATIONS
Stainless steel front, sides and front top ledge. Fully
welded stainless and aluminized steel body frame. 11"
low profile cooking height on 4" legs. 1" thick polished
steel griddle plate with 12 gage, 4" stainless steel back
and tapered side splashes. Grease chute is fully
welded to stop grease migration.
One 27,000 BTU/hr. “U” shaped aluminized steel
burner and mechanical snap action thermostat for
each 12" of griddle width. Chrome thermostat knob
guards. Temperature adjusts from 200° to 550° F.
One pilot safety for every two burners. Manual shut-
off valve. 3½" wide stainless steel grease trough.
120V 50/60Hz 1 Amp single phase electric ignition
circuit. Plug type is NEMA 5-15 USA. ¾" rear gas
connection and gas pressure regulator.
A gas pressure regulator supplied with the unit must
be installed.
Check and set the gas pressure after the regulator is
installed.
Manifold pressure should be:
Natural Gas 4.0" W.C.
Propane Gas 10.0" W.C.
Incoming pressure should be 5-9" W.C. for
Natural Gas and 11.0" W.C. for Propane Gas.
Incoming pressure should not exceed 14.0" W.C.
Heavy Duty Gas Griddles - GENERAL
F25383 (0219)
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