Market Forge Industries 2600 HE User manual

OWNER’S MANUAL
High Efciency Electric Convection Oven
MODELS:
●2600 HE
●2800 HE
●2692 HE
●2892 HE
An Employee Owned Company
35 Garvey Street ●Everett ●MA ●02149-4403 Form No. S-5198 ●03/07
Tel: [phone] ●Fax: [phone] (MA)
Toll Free: [phone] ●Outside MA Fax: [phone]
Customer Service: custserv@mi.com ●Visit Us At: www.mi.com

TABLE OF CONTENTS
i
INSTALLATION
INSTALLATION INSTRUCTIONS .......................................................1
DETAILS & DIMENSIONS...................................................................2
ASSEMBLY INSTRUCTIONS - 28” MODULAR STAND .....................3
ASSEMBLY INSTRUCTIONS - STACKED OVENS ON STAND.........4
ASSEMBLY INSTRUCTIONS - 7” STAND ..........................................5
WIRING DIAGRAMS...........................................................................6-16
OPERATION
OPERATING INSTRUCTIONS............................................................17
CONTROL PANEL COMPONENTS ....................................................17
MAINTENANCE
PREVENTIVE MAINTENANCE...........................................................18
REMOVAL & REPLACEMENT OF DOOR STYLE A...........................18
REPLACE &/OR ADJUST CATCH ......................................................18
REPLACE DOOR FILLER STRIP .......................................................18
REMOVAL & REPLACEMENT OF DOOR STYLE B ..........................18
THERMOSTAT CALIBRATION............................................................18
FAN MOTOR REMOVAL.....................................................................18
ILLUSTRATED PARTS
STACKED ELECTRIC OVEN..............................................................20
MODULAR ELECTRIC OVEN EXPLODED VIEW..............................21-22
MODULAR ELECTRIC OVEN HEATING ELEMENTS .......................23-24
ELECTRIC CONTROL PANEL............................................................25

INSTALLATION
1
For single oven installation on 28” stand use gure 1 for stand assembly. For stacked ovens in-
stalled on a 7” stand see gure 2 for stacking instructions and gure 3 for stand assembly.
Mount oven on stand. Secure to stand using 3/8” - 16 x 3/4” hex. hd. screws (P/N 10-2034) and four
3/8” plain washers (P/N 10-2401) as provided.
Be sure that both the blower guard and deectors are properly installed (refer to blower guarde im-
age below)
With a level on the oven shelves, be sure that the oven is level front to back, left to right and diago-
nally. To adjust oven turn feet in stand legs.
The electrical supply connection to the 208-230V oven is made to the circuit breaker located behind
the access panel just below the control panel. The electrical supply connection to the 440-480V is
made to the terminal strip at the same location. Check that supply voltage is the same as the voltage
stamped on the oven rating plate (refer to gure 2). If it is necessary to convert from three phase to
single phase power or vice-versa, change internal connections at the terminal block as indicated on
the wiring diagrams (refer to gure 2W and 4W).
NOTE: Always make sure that a goo ground connection is made to the oven frame. Never use a
neutral leg for oven grounding.
On 440V, 460V and 480V installation, check that the blower rotates in a clockwise direction. If it
does not, simply switch positions of any two of the three power input wires at the circuit breaker or
terminal block.
After installation is complete a nal check of the controls and wiring should be made by turning the
oven on and heating it up to 350oF, for ve minutes (refer to “operating instructions”). During this
period check the current draw (refer to chart below). After this check is complete, turn thermostat
and main power switch off.
Amp Values for Standard Ovens
Single Phase Three Phase
Volts: 208 230 208 230 440 460 480
Amps: 63 57 36 33 17 16 15
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INSTALLATION
2
SERVICE CONNECTIONS
Electrically Operated
EC Electrical Connection- for incoming power supply wires
on terminal block.
EP
Power Supply- 1 3/4” (44mm) DIA. access holes for
power supply wires. Use wire suitable far at least 90oC.
Nominal amp per line wire per oven 10.4KW
Volts 1pH 3pH
208 (197-219) 50 30
230 (220-240) 44 25
480 (460-500) -- 12.5
Details of other electrical systems available upon request.
NOTES: Allow 2” space from side wall and 2”
space from rear wall if adjoining wall is com-
bustible.
All stands are 32” front to back. When used
with deep oven overhang may either front or
back as desired (recommended overhang is
in back). Allow 3 3/4” on front for door handles
and controls.
DETAILS & DIMENSIONS

INSTALLATION
3
ASSEMBLY INSTRUCTIONS FOR 28” MODULAR (SINGLE OR MULTIPLE) OVENS STAND: (Figure 1)
Insert adjustable foot (#5) to leg assembly (#4).
Assemble leg assembly (#4) to top frame assembly (#1) using hardware (#6 & #7).
Place into position front and rear channel assembly (#2) and side channel (#3).
Use hardware (Item #7) plain washer and (Item #6) 3/18-16 hx. hd. cap screw to mount stand to oven.
When joining stands, do not attach side channel skirt, two legs may be discarded joining stands together.
ITEM #
“OBSOLETE”
*PAINTED PART #
STAINLESS STEEL
PART # DESCRIPTION
1 99-0838 99-0838 TOP FRAME ASSEMBLY - PAINTED*
2 99-0840 FRONT & REAR CHANNEL ASSEMBLY
3 99-0841 SIDE CHANNEL
4 90-9131 90-9114 LEG ASSEMBLY
5 10-0644 10-0644 FOOT
6 10-2034 10-2034 3/18-16 HX. HD. CAP SCREW
710-2401 10-2401 3/8 PLAIN WASHER
8 10-3035 10-3035 3/8-16 HX. NUT
* PAINTED PARTS ARE NO LONGER AVAILABLE (OBSOLETE).
ITEMS 2 & 3 ARE LOOSE PARTS AND THEY ARE TIED TOGETHER WITH MOUNTING OF OVEN TO STAND.
Figure 1.
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INSTALLATION
4
Figure 2.
ASSEMBLY INSTRUCTIONS (208/230V & 440/480V) STACKED OVENS WITH 7” STAND: (Figure 2)
Mount bottom oven on stand using hardware (#4 & #5). Either oven may serve as bottom oven.
Stack top oven on bottom oven. Be sure ovens in position are level front to back, side to side and diagonally.
Place lower oven in position, level it and make necessary adjustments prior to placing second oven. This
includes all adjustments to doors. The screws that hold the front trim at the top of the oven on the lower oven
should be removed prior to placing the top oven in position. This will permit removal of the cover or front trim
so that door adjustments may be made at a later time.
Pull bottom trim panel forward to release from spring catches and lower to full open position as shown in gure
2 above.
Remove screws and circuit breaker cover (#3 & #6) from 208/230V oven to make power supply connection.
Remove screws and circuit breaker cover (#3 & #2) from 440/480V oven to make power supply connection.
Bring power supply line in through 1 3/4” diameter knockout in rear panel.
If space is available, right side panels can be removed from ovens to increase accessibility in making power
connections.
ITEM #
“OBSOLETE”
*PAINTED PART #
STAINLESS STEEL
PART # DESCRIPTION
1 99-0851 99-0853 SUPPORT STAND 7” HIGH
299-3335 99-3335 TERMINAL BLOCK COVER
3 10-2352 10-2352 BINDING HD. SCREW TYPE A #8 x 1/2” LG.
410-2401 10-2401 PLAIN WASHER 3/8
5 10-2034 10-2034 HX. HD. CAP SCREW 3/8-16 x 3/4 LG.
6 99-3293 99-3293 CIRCUIT BREAKER COVER
* PAINTED PARTS ARE NO LONGER AVAILABLE (OBSOLETE).
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IMPORTANT NOTE: If stacked ovens are adjacent to moisture produc-
ing equipment (i.e. kettles or steam cookers) it is necessary to seal the
seam between the stacked ovens and the moisture producing equip-
ment to prevent condensation from entering control section of the bottom
oven. Silicone synthetic rubber is recommended for a sealant.

INSTALLATION
5
Figure 3
ASSEMBLY INSTRUCTIONS 7” STAND FOR MODULAR STACKED OVENS: (Figure 3)
Screw legs (#4) into top frame assembly (#1).
Drop front and rear angle assembly (#2) and side angle (#3) over top frame assembly (#1).
ITEM #
“OBSOLETE”
*PAINTED PART #
STAINLESS STEEL
PART # DESCRIPTION
1 99-0845 99-0845 TOP FRAME ASSEMBLY - PAINTED*
2 99-0857 FRONT & REAR ANGLE ASSEMBLY
3 99-0854 SIDE ANGLE
410-0631 10-0631 LEG
* PAINTED PARTS ARE NO LONGER AVAILABLE (OBSOLETE).
ITEMS 2 & 3 ARE LOOSE PARTS AND THEY ARE TIED TOGETHER WITH MOUNTING OF OVEN TO STAND.
1.
2.

INSTALLATION
6
Figure 1W

INSTALLATION
7
Figure 2W

INSTALLATION
8
Figure 3W

INSTALLATION
9
Figure 4W

INSTALLATION
10
Figure 5W

INSTALLATION
11
Figure 6W

INSTALLATION
12
Figure 7W

INSTALLATION
13
Figure 8W

INSTALLATION
14
Figure 9W

INSTALLATION
15
Figure 10W

INSTALLATION
16
Figure 11W

OPERATION
17
Do not attempt to operate oven without rst reading the
following instructions thoroughly.
Be sure that power is available to unit.
Be sure that both the blower guard and deector are
properly mounted.
Turn on power with doors open.
Arrange shelf positions dependent upon item to be
baked or roasted.
Close doors. Blower should come on and rotate
clockwise, otherwise unit is not operating correctly.
If blow does not start or starts and immediately
stops, this may indicate an electrical overload. Reset
circuit breakers on control panel. If blower still does
not operate, this is an indication of incorrect wiring
or other electrical problems. Have your electrician
check the wiring if this is an initial operation, other-
wise contact your local service agency. For a Service
Agency Listing Go To: http://www.mi.com/ and click
on Service or call our factory at 866-698-3188 and
ask for Service Department.
Preheat to desired temperature and allow to cycle
once for 15 minutes to obtain even temperature
throughout oven.
Oven is ready to cook and may be loaded when
indicator light goes off. The load should be adjacent
to the oven to facilitate rapid loading so that doors
will be open as short a time as possible.
If using the convection oven for long term roasting of
meats, sh or poultry, place about a quart of water
in a suitable container in the oven under a trivet in
the same pan as the product.
Close doors and set to desired cooking time.
Interior lights nay be turned on or off as desired. If
light fail to operate reset circuit breaker on control
panel. If lights still fail to operate this indicates faulty
bulbs. If light still fail to operate this indicates an
internal electrical fault and an electrician should be
notied.
Bell will sound when cooking is complete. Oven is
ready to unload.
If oven temperature is to be lowered, set thermostat
to the desired temperature. Keep the blower oper-
ating by leaving the right door closed and left door
open. When indicator light comes on, oven is at lower
temperature. Close both doors. When indicator light
goes off the oven is ready to use.
When oven is to be turned off, turn oven thermostat
off, turn power switch off and leave doors ajar.
NOTE:
Fan should always operate in a clockwise rotation.
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CONTROL PANEL COMPONENTS:
Interior Light Switch: This switch controls the interior oven
lights. These are special heat resistant 120 volt lamps. Proper
replacements are available through the factory. It is not advis-
able to use inferior hardware store bulbs as replacements.
Power On Switch: This switch is located on the bottom of the
control panel. This switch must be ipped to the right before
any current can ow to either the thermostat of the fan motor.
It is a single pole, single throw toggle switch and its purpose
is to insure that the convector fan motor is on when the oven
is on. With the switch in the left (off) position the oven will not
operate.
Light Reset Switch: This switch is located on the control panel
above the Power On switch. it serves as a circuit breaker for
the oven lights.
Circuit Breaker: This switch controls the power to the control
panel and fan motor of the oven. If an overload should occur
the switch will ip down (off) automatically. In doing so, it breaks
the circuit to the contactors, shutting down the entire oven.
Power to the oven is restored by ipping the external circuit
breaker switch up (on) provided the cause of the overload has
been remedied.
NOTE:
When working on the heating elements the internal circuit
breaker of the oven should be shut down.
Thermostat Control: With the Power On switch in the ght
hand (on) position, the thermostat control may be dialed to a
desired temperature. Heating elements will turn on and off to
maintain constant temperature at the thermostat setting.
Indicator Light: the red light glows when the heating ele-
ments are on. It will go on and off as the oven cycles.
Motor Reset Button: This serves as an automatic circuit
breaker on the convector motor circuit to protect the motor
from sudden overloads. Pressing the motor rest button will
re-establish the circuit provided the cause of the overload has
been remedied.
60 Minute Timer: For timing cooking cycles of less than 60
minute durations. Upon completion of timing cycle a bell will
sound to signify that the present time has elapsed and foods
may be removed.
5 Hour Timer: For timing cooking cycles of more then one
hour and upon completion of timing cycle a bell will sound to
signify that the present time has elapsed and foods may be
removed.

MAINTEANCE
18
PREVENTIVE MAINTENANCE
A good preventive maintenance program in the form of daily
cleaning procedures is outlined in the following steps.
Remove oven shelves and wash in mild detergent and
water. Rinse and dry.
Remove left and right hand shelf supports by lifting up and
out toward center of oven. Wash, rinse and dry.
Remove fan guard by lifting up and out. Wash, rinse and
dry.
Wash interior sides, bottom and top with mild detergent
and water. A stainless steel cleaner, not polish, should be
used for the interior. Rinse and dry.
Replace fan guard shelf supports and shelves.
Wash both sides of doors using a stainless steel cleaner.
Rinse and dry.
REMOVAL & REPLACEMENT OF DOOR STYLE A:
Refer to gure 4 on page 19:
Remove screw (#1) from hinge plate (#2) at top and bot-
tom and remove door from oven.
Remove side channel (#3) and slide out glass insert (#4)
from door trim (#5).
Assemble new glass insert in reverse order.
REPLACE &/OR ADJUST CATCH:
Refer to gure 4 on page 19:
Follow above instructions rst.
Remove glass insert (#4) from door trim (#5).
Take off retaining clip (#6) remove old catch (#7) and
install new catch.
REPLACE DOOR FILLER STRIP:
Refer to gure 4 on page 19:
Remove ve drive screws (#9) and remove ller strip (#8).
Add new ller strip (#8) and secure drive screws (#9). If
ller strip is secured with pop rivets, drill out.
For door ller strip addition (#8) see view A. Drill ve 1/8”
diameter holes using door ller strip as a template and
secure with ve drive screws (#8 & #9).
REMOVAL & REPLACEMENT OF DOOR STYLE B:
Refer to gure 5 on page 19:
Remove screw (#1) from hinge plate (#2) at top and bot-
tom and remove door from oven.
Remove side channel (#3) and slide out glass insert (#4)
from door trim (#5).
Assemble new glass insert in reverse order.
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Thermostat Calibration
If the oven components are operating but the unit is not cook-
ing properly, the thermostat may need calibration. To calibrate,
proceed as follows:
Attach a thermocouple lead to the bulb of the thermostat
and close oven doors.
Place power switch in the ON position.
Set thermostat dial at 400°F and carefully remove the
switch control knob.
Allow the unit to heat until the indicator light has gone
out twice.
Note the temperature reading on the thermocouple.
a) If the temperature reading is off 500 or more, the ther-
mostat must be replaced.
b) If the reading is off less than 50°F, adjust the thermostat
setting using a ne blade screw-driver in the stem of the
thermostat.
With the oven temperature set at 400°F, the cycling
should retain a peak of 420°F and a low of 380°F after two
stabilizing cycles. A good indication of proper calibration is
the temperature at which the burners ignite and shut off.
It should be:
Cut off 400-405°F
Cut in 380-385°F
After completing calibration, apply Duco cement or
equivalent to the adjusting screw of the thermostat and
replace the knob.
Fan Motor Removal
Motor removal is completed from inside the oven. With external
circuit breaker shut off, proceed as follows:
Remove fan guard.
Remove four nuts and clips from motor assembly.
Pull motor forward, carefully disconnect electrical wiring,
and slide motor off screws.
Install replacement motor assembly as required.
Thermostat Removal
Remove six screws from top panel on right side of oven.
Remove four screws from rear panel.
Remove four screws from control panel.
Remove right side panel.
Remove ve screws that secure perforated capillary tube
guard to oven liner.
Slide thermostat bulb out from clips and through hole in
side of oven.
Slide entire assembly out front of oven through the control
area.
Install replacement thermostat as required.
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