Vulcan-Hart RGT-10 Installation, Service & Parts Manual page 10

PARTS REPLACEMENT (Cont.)
The direction of rotation is clockwise as viewed from
inside the Oven. The 1-phase Motors are internally
designed for C.W. rotation. On 3-phase Motors, inter-
change any two supply leads to convert C.C.W. to C.W.
rotation.
2. OVEN LIGHTS
The two 50 watt, 115 volt bulbs are connected in
series in the Electric and in parallel in the Gas
Convection Ovens.
To replace lamps, remove the (4) Mounting Bolts
holding the Lamp. Window Assembly. Both the Lamp,
as well as the socket can now be serviced. Make sure
the replacement lamp is of high temperature type and
is not larger than 50 watts.
3. DOOR SWITCH
With the oven door closed, the normally open contact
of the door switch is closed providing power to the
Heat and Motor Controls. When the Door opens, the
normally open contact is de-energized, and the
Solenoid and the Blower are turned off.
To adjust or replace the Door Switch, remove the (2)
mounting screws on the underside of the top finishing
piece. Depress the Door Catches up inside the Top
Channel and pull the top finishing piece off.
The Door Switch is controlled by a cam type device
mounted to the top of the right hinge pin. The cam
must actuate the Door Switch when the door is
approximately 3 inches from being closed.
To replace the Door Switch, remove the Mounting
Screws on the Door Switch Support Bracket and
remove the defective switch from the bracket.
POWER PANEL ASSEMBLY
A. CONTACTOR. The 3-pole motor controller is used on
units equipped with 3-phase motors. It is energized
when the power is on and the door closed but also
when the door is open but the aux. fan switch is
depressed to the "ON" position.
To replace, remove the (2) mounting screws and
disconnect the leads.
B. RELAY. The S.P.S.T. Relay provides power to the
Blower Motor, on units equipped with aux. fan switch,
in order to over-ride the door interlock.
To replace, follow Item A procedure.
C. BUZZER. Signalled by the timer, the buzzer sounds
when the pre-set time is completed.
To replace, cut both wires approx. 3" from buzzer and
strip ends. Remove the bracket holding the defective
buzzer. Install the new buzzer equipped with mounting
bracket and lead, and connect the wires with wire
nuts.
D. CIRCUIT BREAKER. The circuit breakers in 208, 240,
480 volt models provide protection for the control
circuits and the lights. The circuit breakers are
constructed with internal time delay. They detect short
circuit or overload conditions in the equipment and trip
to "OFF" position.
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