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This service and parts manual contains general information, installation, operation, principles
of operation, trouble-shooting and maintenance information for the Market Forge Model 4200
Electric Compact Convection Oven. Also included are parts lists, in which each replaceable
part is identified and shown in an accompanying illustration.
DESCRIPTION
The Market Forge Model 4200 Electric Com-
pact Convection Oven is an electrically pow-
ered convection oven designed to achieve
high volume cooking with a minimum of pow-
er consumption. The unit consists of a heavily
insulated cooking compartment fitted with a
two speed convector blower and heated by
electric elements. All oven controls are locat-
ed on a panel on the right front of the oven as
seen from the front.
OVEN COMPONENTS
The major assemblies of the model 4200 are
the stainless steel and flat back painted steel
cabinet enclosure, door with window, porce-
lain cooking compartment with nine-position
shelf supports, heating element and contrac-
tor assembly, and control panel assembly.
Controls and indicators include the thermo-
stat, main power switch, blower speed switch,
cool down/switch, elements on indicator light,
60-minute timer, and elements only switch.
The oven is available in variety of mount-
ing configurations: 4" 102mm high-legs, 27"
686mm legs with shelf, or stacked on top of
another Model 4200 with the bottom unit on
18" 457mm stainless steel legs with shelf.
BASIC FUNCTIONING
The Model 4200 becomes operational when
the power switch is placed in the ON position,
door is closed, and thermostat set. Contrac-
* We recommend that service be performed by a qualified Market Forge Authorized Service.
Service performed by others will void warranty. Market Forge is not responsible for repairs
made by other than authorized service agents.
INTRODUCTION
tors located in the control section close the
circuit to heating elements located at the right
of the cooking chamber. When the chamber
reaches the preset temperature, the thermo-
stat contacts open, causing the contractors to
interrupt the circuit to the heating elements.
When the temperature in the chamber drops
enough to close the thermostat contacts, the
circuit closes again. Any number of such cy-
cles might occur during the cooking time, ~in-
dicated by the element indicator light coming
on and off.
SERVICE
Required service, both preventive and correc-
tive, is explained in section 5. Should repairs
be required, a network of authorized agencies
is available to assist with prompt service. A
current directory of Authorized Service Agen-
cies may be obtained by contacting:
The model and serial number must be ref-
erenced when corresponding with Market
Forge. The data plate with serial number is
located on the right of the bottom front trim
ledge.
1
Product Service Department
Market Forge Company
35 Garvey Street
Everett, MA 02149-4403
(617) 387-4100
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