Middleby Marshall PS53GS User Manual

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PS536GS Gas Domestic, Std. Export & CE

ENGLISH/French/Spanish

P/N 50236

Rev. B • V1 • 10/04

Price $30.00

PS536GS Gas Ovens

Models:

• PS536GS Gas

OWNER'S OPERATING, INSTALLATION, AND PARTS MANUAL

for domestic, standard export and CE export ovens

Combinations:

• Single Oven

• Double Oven (Two-Stack)

• Triple Oven (Three-Stack)

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • (847)741-3300 • FAX (847)741-4406

NOTICE:

Owner's Operating and Installation Manual should be given to the user. The operator of the oven should

This be familiar with the functions and operation of the oven.

This manual must be kept in a prominent, easily reachable location near the oven.

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Ovens are shipped from the factory configured for use with natural gas. If permitted by local, national and international codes, at the time of installation the oven may be converted to propane gas operation. This conversion requires the use of at Gas Conversion Kit that is supplied with the oven. For CE-approved ovens, the conversion is described in the instructions are included in the Gas Conversion Kit.

It is suggested to obtain a service contract with a Middleby Marshall Authorized Service Agent.

Installation

section of this Manual. For domestic and standard export ovens,

WARNING

POST, IN A PROMINENT LOCATION, THE EMERGENCY TELEPHONE NUMBER OF YOUR LOCAL GAS

SUPPLIER AND INSTRUCTIONS TO BE FOLLOWED IN THE EVENT YOU SMELL GAS.

Instructions to be followed in the event the user smells gas shall be obtained by consulting the local gas

supplier. If the smell of gas is detected, immediately call the emergency phone number of your local Gas

Company. They will have personnel and provisions available to correct the problem.

FOR YOUR SAFETY

Do not store or use gasoline or other flammable vapors or liquids in the vicinity of

this or any other appliance.

WARNING:

Improper installation, adjustment, alteration, service or maintenance

can cause property damage, injury or death. Read the installation,

operating and maintenance instructions thoroughly before installing

or servicing this equipment.

IMPORTANT

An electrical wiring diagram for the oven is located inside the machinery

compartment.

IMPORTANT

It is the customer's responsibility to report any concealed or non-concealed damage

to the freight company. Retain all shipping materials until it is certain that the

equipment has not suffered concealed shipping damage.

NOTICE: CONTACT YOUR MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT TO PERFORM MAINTENANCE

AND REPAIRS. AN AUTHORIZED SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN.

NOTICE: Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability.

NOTICE: Middleby Marshall (Manufacturer) reserves the right to change specifications at any time.

NOTICE: The equipment warranty is not valid unless the oven is installed, started and demonstrated under the supervision

of a factory certified installer.

Retain This Manual For Future Reference

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406

24-Hour Service Hotline: 1-(800)-238-8444 • Middleby Customer Care Center: 1-(800)-630-6559

www.middleby.com

TABLE OF CONTENTS

page page

SECTION 1 - DESCRIPTION ................................................... 4

B. Connection ...................................................... 13

I. OVEN USES ............................................................. 4

II. OVEN COMPONENTS ............................................. 4

A. Window ............................................................. 4

B. Conveyor End Stop ........................................... 4

C. Eyebrows .......................................................... 4

D. End Plugs ......................................................... 4

E. Control Panel .................................................... 4

F. Machinery Compartment and Control

Compartment Doors ........................................ 4

G. Serial Plate ....................................................... 4

H. Conveyor Drive Motor ....................................... 4

I. Crumb Pans ..................................................... 4

J. Conveyor ........................................................... 4

K. Gas Burner ....................................................... 4

L. Blowers ............................................................. 4

M. Air Fingers ........................................................ 4

III. OVEN SPECIFICATIONS ......................................... 4

A. Dimensions ...................................................... 4

B. General Specifications ..................................... 4

C. Electrical Specifications for Gas Ovens .......... 5

D. Gas Orifice and Pressure Specifications -

Domestic and Standard Export Ovens ............ 5

V. GAS SUPPLY .......................................................... 1 4

A. Gas Utility Rough-In Recommendations ....... 14

B. Gas Conversion .............................................. 14

C. Connection ...................................................... 1 4

SECTION 3 - OPERATION ..................................................... 1 6

I. LOCATION AND DESCRIPTION OF CONTROLS . 16

A. BLOWER (

B. HEAT (

C. CONVEYOR (

D. Conveyor Speed Controller ............................. 16

E. Digital Temperature Controller ....................... 16

F. Machinery and Control Compartment

Safety Switches ............................................... 16

II. NORMAL OPERATION, STEP-BY-STEP ................ 1 7

A. Daily Startup Procedure .................................. 17

B. Daily Shutdown Procedure .............................17

III. QUICK REFERENCE: DIGITAL TEMPERATURE

CONTROLLER ....................................................... 18

SECTION 4 - MAINTENANCE ................................................. 19

I. MAINTENANCE - DAILY .......................................... 1 9

II. MAINTENANCE - MONTHLY .................................. 2 0

III. MAINTENANCE - EVERY 3 MONTHS .................... 2 0

) Switch ..................................... 16

) Switch ............................................ 16

) Switch ............................... 16

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E. Gas Orifice and Pressure Specifications -

CE Ovens .......................................................... 5

SECTION 2 - INSTALLATION .................................................. 6

I. INSTALLATION KIT .................................................. 7

II. VENTILATION SYSTEM ........................................... 8

A. Requirements .................................................. 8

B. Recommendations .......................................... 8

C. Other Ventilation Concerns .............................. 8

III. ASSEMBLY ............................................................... 9

A. Top Panel and Base Pad Assembly ............... 9

B. Stacking ........................................................... 10

C. Restraint Cable Installation ............................ 10

D. Conveyor Installation ....................................... 11

E. Final Assembly ................................................ 12

IV. ELECTRICAL SUPPLY ........................................... 13

A. Additional Information - Gas Ovens ................ 13

IV. MAINTENANCE - EVERY 6 MONTHS .................... 22

SECTION 5 - PARTS LIST ..................................................... 23

I. KEY SPARE PARTS KIT .......................................... 2 3

II. INSTALLATION KIT .................................................. 2 5

III. PANELS, END PLUGS AND WINDOW ................... 27

IIIa. PANELS, END PLUGS WITHOUT WINDOW .......... 27

IV. CONTROL COMPARTMENT ................................... 2 9

V. MACHINERY COMPARTMENT AND GAS TRAIN .... 3 1

VI. REAR COMPARTMENT AND BLOWERS ................ 33

VII. SINGLE-BELT CONVEYORS .................................. 3 5

VIII. SPLIT-BELT CONVEYORS ..................................... 3 7

SECTION 6 - ELECTRICAL WIRING DIAGRAMS ................... 39

I. WIRING DIAGRAM, PS536GS GAS OVEN

(DOMESTIC & STD. EXPORT VERSION),

208/240V, 50/60 Hz, 1 Ph ................................ 39

SECTION 1 - DESCRIPTION

I. OVEN USES

PS536GS ovens can be used to bake and/or cook a wide variety of food products, such as pizza, pizza-type products,

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cookies, sandwiches and others.

II. OVEN COMPONENTS - see Figure 1-1.

A. Window: Allows the user to see and access food products

inside the baking chamber.

B. Conveyor End Stop : Prevents food products from falling

off the end of the moving conveyor.

C. Eyebrows: Can be adjusted to various heights to prevent

heat loss into the environment.

D. End Plugs: Allow access to the oven's interior. E. Control Panel: Location of the operating controls for the

oven. Refer to Section 3,

F. Machinery Compartment and Control Compartment

Doors: Allow access to the oven's interior components.

One door is located at each end of the oven. No userservicable parts are located inside the machinery compartment or control compartment.

G. Serial Plate: Provides specifications for the oven that affect

installation and operation. Refer to Section 2, Installation, for details.

H. Conveyor Drive Motor: Moves the conveyor. I. Crumb Pans: Catch crumbs and other material that drop

through the conveyor belt. One crumb pan is located underneath each end of the conveyor.

Operation, for details.

J. Conveyor: Moves the food product through the oven.

Not Shown:

K. Gas Burner: Heats air, which is then projected to the air

fingers by the blowers.

L. Blowers: Fans that project hot air from the gas burner to

the air fingers.

M. Air Fingers: Project streams of hot air onto the food

product.

Fig. 1-1 - Oven Components

III. OVEN SPECIFICATIONS

Table 1-1: Dimensions

Overall Height:

Overall Depth: Overall Length:

Baking Chamber Length Conveyor Width:

Conveyor Length Recommended Minimum Clearances:

Rear of oven to wall 3" (76mm)

Control end of conveyor to wall 1" (25.4mm)

Non-control end of oven to wall 1" (25.4mm)

Table 1-2: General specifications (per oven cavity)

Weight Rated Heat Input:

Maximum Operating Temperature Warmup Time

single oven with 17-1/2" (446mm) legs 43-1/2" (1105mm)

double oven with standard 17-1/2" (446mm) legs 63" (1600mm)

double oven with optional 20-1/2" (521mm) legs 66" (1676mm)

double oven with optional 25-1/2" (648mm) legs 71" (1803mm)

triple oven with 6" (152mm) legs 71" (1803mm)

46" (1168mm)

with standard 60"/1524mm conveyor 61" (1549mm)

with optional 56"/1422mm conveyor 57" (1447mm)

with optional 76"/1930mm conveyor 77" (1956mm)

36" (914mm)

Single Belt 20" (508mm)

Split Belt 2 x 9-1/2" (241mm)

56" (1422mm) or 60" (1524mm) or 76" (1930mm)

400 lbs. (182kg)

Natural gas ovens 70,000 BTU (17,638 kcal, 20.51 kW/hr.)

Propane ovens 70,000 BTU (17,638 kcal, 20.51 kW/hr.)

550°F (288°C)

25 minutes

SECTION 1 - DESCRIPTION

Table 1-3: Electrical specifications for gas ovens (per oven cavity)

Main Blower Control Current

Voltage Circuit Voltage Phase Freq. Draw Poles Wires

208/240V

* The current draw shown above is an average value for normal operation. The initial amperage draw on oven startup may exceed the listed

value.

120V conv. speed control

& drive motor; all others

as per line (208/240V)

1 Ph 50/60 Hz 6A * 2 Pole 3 Wire (2 hot, 1 gnd)

Table 1-4: Gas orifice and pressure specifications (per oven cavity) - Domestic and standard export ovens

Gas Type Main Orifice I.D. Bypass Orifice I.D. Supply (Inlet) Pressure Pressure

Natural 0.0935” (2.3749mm, #42 drill) 0.0810” (2.0574mm, #46 drill) 6-12” W.C. (14.9-29.9mbar) * 4.0” W.C. (9.93mbar)

Propane 0.081” (2.0574mm, #46 drill) 0.052” (1.3208mm, #55 drill) 11-14” W.C. (27.4-34.9mbar) * 10.5” W.C. (26.15mbar)

The gas supply pressures and orifice sizes shown are for ovens installed in North America. The required gas supply pressures and orifice sizes of ovens installed in other locations are dependent on the local gas type and on all applicable local codes.

Orifice (Manifold)

Table 1-5: Gas orifice and pressure specifications (per oven cavity) - CE ovens

Supply (Inlet) Pressure

Gas Orifice DK,FI NL DE BE,FR FI,DE,NL ES,UK (Manifold) Heat

Main UK,CH,IT,AT, SE,CH,AT,DK, BE,IE,IT,PT, Orifice Rated

Type dia.

G20 2.3749 20 -- 20 20 -- -- 11.21 22.36

mm mbar mbar mbar mbar kW-hr.

G25 2.3749 -- 25 - - -- -- -- 16.19 22.36

mm mbar mbar kW-hr.

G30 1.3970 -- -- -- -- 29 or 50 28-30, 37 26.2 22.59

mm mbar or 50 mbar mbar kW-hr.

IT,PT,ES,SE,

2E+

3B/P

Pressure Input

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IMPORTANT

Additional electrical information is provided on the oven's serial plate, and on the wiring diagram inside the machinery compartment.

WARNING - For gas ovens, after any conversions, readjustments, or service work on the oven:

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The oven must be installed on an even (level) non-flammable flooring and any adjacent walls must be non-flammable. Recommended minimum clearances are specified in the

Do not obstruct the flow of combustion and ventilation air to and from your oven. There must be no

obstructions around or underneath the oven. Constructional changes to the area where the oven is

SECTION 2 - INSTALLATION

• Perform a gas leak test.

• Test for correct air supply.

• Test for proper combustion and gas supply.

• Check that the ventilation system is in operation.

WARNING

Keep the appliance area free and clear of combustibles.

WARNING

Description

this Manual.

WARNING

installed shall not affect the air supply to the oven.

CAUTION

For additional installation information, contact your local Authorized Service Agent.

section of

NOTE

There must be adequate clearance between the oven and combustible construction. Clearance

must also be provided for servicing and for proper operation.

NOTE

An electrical wiring diagram for the oven is located inside the machinery compartment.

NOTE

All aspects of the oven installation, including placement, utility connections, and ventilation requirements,

must conform with any applicable local, national, or international codes. These codes supersede the

requirements and guidelines provided in this manual.

NOTE

In the USA, the oven installation must conform with local codes. In the absence of local codes, gas oven

installations must conform with the National Fuel Gas Code, ANSI Z223.1. Installed ovens must be

electrically grounded in accordance with local codes, or in the absence of local codes, with the National

Electrical Code (NEC), or ANSI/NFPA70.

NOTE

In Canada, the oven installation must conform with local codes. In the absence of local codes, gas oven installations must conform with the Natural Gas Installation Code, CAN/CGA-B149.1, or the Propane Gas

Installation Code, CAN/CGA-B149.2, as applicable. Installed ovens must be electrically grounded in

accordance with local codes, or in the absence of local codes, with the Canadian Electrical Code CSA C22.2.

NOTE

In Australia, the oven installation must conform with any requirements of the appropriate statutory authority.

Gas oven installtions must conform with AGA Codes AG311 and AG601.

NOTE

In CE countries, all aspects of the gas supply connection must comply with current IEC/CEE requirements and

with all applicable local, national, and international codes. In addition, four casters are provided to allow the oven

to be more easily moved to the installation location. These casters are intended to simplify pre-installation

movement only, and are NOT suitable for use as part of a CE oven installation. During the installation procedure,

the casters MUST be removed, so that the oven can be supported by the supplied 152mm adjustable legs.

SECTION 2 - INSTALLATION

Figure 2-1 - Installation Kit

4a, 4b, 4c, 4d

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I. INSTALLATION KIT - see Figure 2-1

Qty. Qty. Qty. Inc. with Inc. with

Single Double Triple domestic CE

Item Oven Oven Oven Part No. ovens? ovens? Description

1 1 1 1 48605 Yes Yes Top panel 2 4 4 4 3A80A8801 Yes Yes Screw, pan head #10 x 2″ 3 1 1 1 42893 Yes Yes Base pad

4a 4 4 -- 42890 Yes Yes 17-1/2″ (445mm) leg extension, for single and

4b -- 4 -- 45360 Yes Yes 20-1/2″ (521mm) leg extension, optional 4c -- 4 -- 45329 Yes Yes 25-1/2″ (648mm) leg extension, optional 4d -- -- 4 44799 Yes Yes 6″ (152mm) leg extension, for triple ovens

5 2 2 2 22290-0009 Yes No Caster, with flat plate and brake 6 A/R A/R A/R 22290-0010 Yes Yes Caster, with flat plate (no brake)

NOTE:

ovens include 4 non-braking casters (Item 6) SOLELY for the purpose of moving the oven to the installation location. Casters are NOT suitable for use as part of CE oven installations. Refer to the notice on the preceding page.

NOTE:

that acts as an anchor for the restraint cable (Item 12). CE ovens are mounted on legs (Item 7) and do not use a restraint cable.

Domestic and standard export ovens include 2 braking casters (item 5) and 2 non-braking casters (Item 6). CE-approved

7 4 4 4 22450-0028 No Yes Leg, adjustable, 6″ (152mm) 8 1 1 1 21392-0004 Yes No Eyebolt, 3/4″ 9 A/R A/R A/R 220373 Yes Yes Hex bolt, 3/8″-16 x 1″

CE-approved ovens include 32 hex bolts. Domestic and standard export ovens include 31 hex bolts and one eyebolt (item 8)

10 32 32 32 21416-0001 Yes Yes Flat washer, 3/8″ 11 32 32 32 21422-0001 Yes Yes Lockwasher, 3/8″ 12 1 1 1 22450-0228 Yes No Restraint cable assembly 13 1 2 3 22361-0001 Yes No Gas hose,

14 1 1 1 50236 Yes Yes 15 1 1 1 1002040 Yes Yes 16 1 1 -- 46393 Yes Yes Lower shelf

double ovens

3/4″ to 1/2″ Gas hose reducer

included with gas hose. Owner's Operating and Installation Manual Authorized Service Agency Listing

SECTION 2 - INSTALLATION

II. VENTILATION SYSTEM

IMPORTANT

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Where national or local codes require the

installation of fire suppression equip-

ment or other supplementary equipment,

DO NOT mount the equipment directly to

the oven.

MOUNTING SUCH EQUIPMENT ON

THE OVEN MAY:

• VOID AGENCY CERTIFICATIONS

• RESTRICT SERVICE ACCESS

• LEAD TO INCREASED SERVICE EXPENSES FOR THE OWNER

A. Requirements

CAUTION

Gas oven installations REQUIRE a mechanically driven ventilation system with electrical exhaust air sensing control.

A mechanically driven ventilation system is STRONGLY RECOMMENDED for electric oven installations.

PROPER VENTILATION OF THE OVEN IS THE RESPONSIBILITY OF THE OWNER.

B. Recommendations

NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 22 ARE RECOMMENDATIONS ONLY. LOCAL, NATIONAL AND INTERNATIONAL CODES MUST BE FOLLOWED WHEN INSTALLING THE VENTILATION SYSTEM. ANY APPLICABLE CODES SUPERSEDE THE RECOMMENDATIONS SHOWN IN THIS MANUAL.

The rate of air flow exhausted through the ventilation system may vary depending on the oven configuration and hood design. Consult the hood manufacturer or ventilation engineer for these specifications.

To avoid a negative pressure condition in the kitchen area, return air must be brought back to replenish the air that was exhausted. A negative pressure in the kitchen can cause heatrelated problems to the oven components as if there were no ventilation at all. The best method of supplying return air is through the heating, ventilation and air conditioning (HVAC) system. Through the HVAC system, the air can be temperaturecontrolled for summer and winter. Return air can also be brought in directly from outside the building, but detrimental effects can result from extreme seasonal hot and cold temperatures from the outdoors.

NOTE: Return air from the mechanically driven system must not blow at the opening of the baking chamber. Poor oven baking performance will result.

C. Other ventilation concerns

• Special locations, conditions, or problems may require the services of a ventilation engineer or specialist.

• Inadequate ventilation can inhibit oven performance.

• It is recommended that the ventilation system and duct

work be checked at prevailing intervals as specified by the hood manufacturer and/or HVAC engineer or specialist.

12" (305mm)

minimum

2" (51mm)

minimum

Fig. 2-2 - Ventilation System

12" (305mm)

minimum

8" (203mm)

minimum

1" (25mm)

minimum

III. ASSEMBLY

A. Top Panel and Base Pad Assembly

1. Install the four leg extensions onto the base pad using the 3/8"-16x1" screws, 3/8" flat washers, and 3/8" lockwashers supplied in the Base Pad Kit. See Figure 2-3. Check that the finished sides of each leg extension face OUTWARDS.

For domestic and standard export ovens:

One rear leg should be attached using three 3/8"-16 x 1" screws and the 3/4" eyebolt, as shown in Figure 2-3. This eyebolt acts as the anchor point for the restraint cable assembly (see Part C,

2. If your oven is equipped with the lower shelf, position it in place as shown in Figure 2-3. Check that the lip on the shelf faces DOWN. Seal joint between leg and shelf with NSF listed silicone.

For domestic and standard export ovens:

Install one caster onto each leg extension, as shown in Figure 2-4. Use the 3/8"-16x1" screws, 3/8" flat washers, and 3/8" lockwashers supplied in the Installation Kit. The locking casters should be installed at the FRONT of the oven. The non-locking casters should be installed at the REAR of the oven.

For CE export ovens:

The Installation Kit includes four casters AND four 152mm adjustable legs. The casters are provided to allow the oven to be more easily moved to the installation location, and are NOT suitable for use as part of the oven installation. Refer to the notice at the beginning of this Section.

After the oven is at the installation location, install one 152mm adjustable leg into the center hole on the bottom of each leg extension, as shown in Figure 2-4.

4. Install the lower oven cavity onto the base pad. See Fig. 2-4.

5. For single ovens ONLY, install the top panel using the screws included in the base pad kit, as shown in Figure 2-

5. Then, skip ahead to Part C, For double or triple ovens, continue on to Part B,

Note that the top panel should NOT be installed for double and triple ovens until after stacking the oven cavities.

Restraint Cable Installation).

Restraint Cable Installation.

Stacking.

SECTION 2 - INSTALLATION

Figure 2-3 - Leg extension and casters installation

Finished sides of

leg extension

face corner of

base pad

3/8" flat

washer

3/8" lock

washer

CE ovens

do not use

the

eyebolt.

Lower

shelf

Non-locking casters -

CE-approved

ovens:

152mm adjustable leg MUST be used

for installation

3/8"-16 x 1"

hex screw

3/4" eyebolt (inside corner of one rear leg extension only)

Domestic and

standard export

ovens:

Locking casters -

FRONT of oven

REAR of oven

3/8" flat

washer

3/8" lock

washer

3/8"-16 x 1"

hex screw

Figure 2-5 - Top panel installation

NOTE:

DO NOT install top panel onto double or triple ovens

until AFTER stacking the oven cavities. See Part B, Stacking.

#10 x 2"

screws

Top

panel

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Figure 2-4 - Base pad installation

Bottom oven

cavity

Assembled

base pad

SECTION 2 - INSTALLATION

B. Stacking

For single ovens, skip ahead to Part C, Restraint Cable Installation.

IMPORTANT

Middleby Marshall STRONGLY RECOMMENDS that PS536GS

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oven cavities be stacked using the following:

• PS500 Series Stacking Lift Kit, P/N 30580

• PS536 Stacking Hardware Kit, P/N 46494

Contact your Middleby Marshall Authorized Service Agent for complete stacking instructions.

1. Stack an oven cavity on top of the lower oven. Check the following:

• All four sides of the lower lip (on the bottom edge of the

oven cavity) overlap the top of the lower oven.

• The oven is level.

• The oven is firmly seated.

See Figure 2-6.

2. For triple ovens, repeat Step 1 to install the top oven cavity.

3. Install the top panel using the screws included in the base pad kit, as shown in Figure 2-7.

Figure 2-6 - Stacking

Figure 2-7 - Top panel installation

#10 x 2"

screws

Top

panel

C. Restraint Cable Installation

For CE-approved ovens,

skip ahead to Part D, Conveyor

Installation.

For domestic and standard export ovens,

continue with this

Section to install the restraint cable.

Because domestic and standard export ovens are equipped with casters, a restraint cable assembly must be installed to limit the movement of the appliance without depending on the connector and the quick disconnect device or its associated piping. One end of the cable is anchored to the eyebolt on one of the rear leg extensions, while the other is anchored to the wall. See Figure 2-8.

After connecting the restraint cable, move the oven to its final location. Then, lock the two front casters.

Figure 2-8 - Installing the Restraint Cable

Restraint cable

assembly

3/8"-16 x 1"

eyebolt on

rear leg

extension

3/4” (19mm)

eyebolt

Wall of

structure

D. Conveyor Installation

1. Unfold the conveyor as shown in Figure 2-9. Then, begin to slide the conveyor into the end of the oven. The conveyor can only be installed from the end of the oven

with the drive

motor.

2. Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven. Check that the crumb tray supports located on the underside of the conveyor frame rest firmly against the lower end plugs, as shown in Figure 2-10.

3. When the conveyor is positioned properly, check for freedom of movement of the conveyor belt by pulling it for about 2-3 feet (0.6-1.0m) with your fingers. The drive and idler shafts must rotate smoothly, and the belt

must move freely

without rubbing on the inside of the oven.

4. Check the tension of the conveyor belt as shown in Figure 2-11. The belt should lift about 1" (25mm). DO NOT OVERTIGHTEN THE CONVEYOR BELT.

NOTE:

If necessary, the belt tension can be adjusted by turning the conveyor adjustment screws, located at the idler (noncontrol) end of the conveyor. See Figure 2-11.

SECTION 2 - INSTALLATION

Figure 2-9 - Conveyor installation

Folded

frame

Idler end (with

belt tension

adjustment

screws)

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Conveyor

placed in

oven

Drive end (with drive sprocket)

Figure 2-10 - Conveyor placement

Figure 2-11 - Conveyor belt tension

Crumb tray

support bracket

End plug

1" (25mm)

vertical

deflection

Adjustment

screws (2) on

idler end of

conveyor

SECTION 2 - INSTALLATION

5. If it is necessary to add or remove conveyor links to achieve the correct tension, OR if it is necessary to reverse the conveyor belt for correct orientation, the belt will need to be removed from the conveyor frame. If this is necessary, perform the following procedure:

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• Remove the conveyor assembly from the oven and

place it flat on the floor.

• Remove the master links using long-nose pliers.

Then, roll up the belt along the length of the conveyor frame.

• Add or remove belt links as necessary to achieve the

correct belt tension.

• Replace the belt on the conveyor frame. Check that the

conveyor belt links are oriented as shown in Figure 212, and that the smooth side of the conveyor belt faces UP.

• Connect the inside master links. Check that the links

are oriented as shown in Figure 2-12.

• Connect the outside master links. Note that the

outside master links each have an open hook on one side. This hook aligns with the hooks along the sides of the other conveyor links. See Figure 2-12.

• Replace the conveyor into the oven.

E. Final Assembly

6. Install the drive chain between the conveyor drive sprocket and the motor sprocket. To install the chain, it will be necessary to lift the drive end of the conveyor slightly.

7. Install the conveyor chain cover as shown in Figure 2-13. Check that the chain cover does not bind on the conveyor sprocket or drive shaft.

8. Install the crumb trays as shown in Figure 2-13.

9. Press the end stop down over the edge of the conveyor frame at the exit end of the oven, as shown in Figure 2-13.

Figure 2-12 - Conveyor and master link orientation

Direction of travel

Incorrect

master link

position

CORRECT master link

position

Press conveyor end stop

down over edge of

conveyor frame

Figure 2-13 - Final assembly

Hang chain cover on

screws in control

compartment wall

Place inside edge

of tray on retainer

bracket

Swing outside

edge of tray up

and into place

IV. ELECTRICAL SUPPLY

WARNING

Authorized supplier personnel normally accomplish the connections for the ventilation system, electric supply, and gas supply, as arranged by the customer. Following these connections, the factory-authorized installer can perform the initial startup of the oven.

NOTE: The electric supply installation must satisfy the

requirements of the appropriate statutory authority, such as the National Electrical Code (NEC), ANSI/NFPA70, (U.S.A.); the Canadian Electrical Code, CSA C22.2; the Australian Code, AG601; current IEC/CEE requirements (CE countries); or other applicable regulations.

NOTE: All aspects of the electrical supply connection must comply with all applicable local, national, and international code requirements.

Check the oven serial plate before making any electric supply connections. Electric supply connections must agree with data on the oven serial plate. The location of the serial plate is shown in Figure 1-1 (in Section 1, Description).

A fused disconnect switch or a main circuit breaker (customer furnished) MUST be installed in the electric supply line for each oven cavity. It is recommended that this circuit breaker/disconnect have lockout/tagout capability. For CE installations, the circuit breaker/disconnect must have a minimum of 3mm contact separation breaking all poles of the supply.

The supply conductors must comply with all applicable local, national and international codes. Supply conductors must be insulated copper wiring, #18 AWG (American Wire Gauge) or equivalent. Additional wiring information is shown on the wiring diagrams in Section 5, Electrical Wiring Diagrams and inside the machinery compartment of the oven.

SECTION 2 - INSTALLATION

The oven requires a ground connection to the oven ground screw located in the electrical junction box. (The box is shown in Figure 2-14.) The ground connection must comply with all applicable local, national, and international codes. If necessary, have the electrician supply the ground wire.

Do NOT use the

wiring conduit or other piping for ground connections!

A. Additional Information - Gas Ovens

All electric supply connections are made via the electrical junction box on the rear of the oven, shown in Figure 2-14. The power lines then connect to the oven circuits through safety switches that interrupt electric power to the oven:

• When the Control Compartment Access Panel is opened;

• When the Machinery Compartment Access Panel is opened,

• When the rear panel is removed.

B. Connection

Refer to the wiring diagram inside the machinery compartment, or in Section 5 of this Manual, to determine the correct connections for the electrical supply lines. Connect the supply as indicated on the wiring diagram.

If required by local, national or international codes, connect an

equipotential ground wire to the lug next to the symbol

(shown in Figure 2-14). The equipotential ground connection

must meet all applicable national and local code requirements.

ENGLISH

33mm cutout for

electric utility

connection

Equipotential

ground lug

Figure 2-14 - Utility connection locations

1/2" NPT pipe for gas

utility connection

(fitted with 3/4" adapter

for use with supplied

3/4" dia. gas hose)

Electrical

Junction Box

SECTION 2 - INSTALLATION

V. GAS SUPPLY

CAUTION

DURING PRESSURE TESTING NOTE THE FOLLOWING:

1. The oven and its individual shutoff valve must be discon-

ENGLISH

nected from the gas supply piping system during any pressure testing of that system at test pressure in excess of 1/2 psi (3.45 kPa).

2. The oven must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressure equal to or less than 1/2 psi (3.45 kPa).

3. If incoming pressure is over 14" W.C. (35mbar), a separate regulator MUST be installed in the line BEFORE the individual shutoff valve for the oven.

WARNING:

lator during initial turn- on of gas, it is

To prevent damage to the control valve regu-

very important to

open the manual shutoff valve very slowly. After the initial gas turn-on, the manual shutoff valve must

remain open except during pressure testing as outlined in the above steps or when necessary during service maintenance.

A. Gas Utility Rough-In Recommendations

The following gas system specifications are STRONGLY RECOMMENDED. Deviating from these recommendations may affect the baking performance of the oven.

Gas Meter -

650 cfh (307l/min) meter

Gas Line

• DEDICATED LINE from the gas meter to the oven

• 2" (50.8mm) pipe for natural gas

• 1-1/2" (38.1mm) pipe for propane

• Maximum length: 200' (61m). Each 90° elbow equals 7'

(2.13m) of pipe.

B. Gas Conversion

Ovens are shipped from the factory configured for use with natural gas. If permitted by local, national and international codes, the oven may be converted to propane gas operation using a Gas Conversion Kit that is supplied with the oven. Gas orifice sizes supplied with the Kit match those shown in Tables 1-4 and 1-5 in the Description section of this Manual.

Where permitted by local and national codes, it is possible to convert ovens from natural to propane gas, or from propane to natural gas, after the oven has been installed. Gas Conversion Kits are available from Middleby Marshall for this purpose.

C. Connection

WARNING

Some procedures in this section may require conver-

sions, readjustments, or service on the oven's gas system. Before performing these procedures, check that the main gas supply valve and the circuit breaker/fused disconnect are in the OFF ("O") position. After completing these procedures, perform a gas leak test before operating the oven.

CAUTION

The terms of the oven's warranty require all start-ups, conversions and service work to be performed by a Middleby Marshall Authorized Service Agent. The installation, start-up and changes required when changing from one gas type to another can be performed ONLY by a certified professional.

NOTE:

Certain safety code requirements exist for the installation of gas ovens; refer to the beginning of Section 2 for a list of the installation standards. In addition:

• In the USA,

the installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1.

• In Canada,

the installation must conform with local codes, or in the absence of local codes, with the Natural Gas Installation Code, CAN/CGA-B 149.1, or the Propane Installation Code, CAN/CGA-B 149.2, as applicable.

• In Australia,

the installation must conform with AGA Codes AG311 and AG601, and with any requirements of the appropriate statutory authority.

• In CE countries,

the gas supply connection should be according to EN-203 (gas appliance directive) and to applicable ISO 228-1 or ISO 7-1 recommendations. All aspects of the gas supply connection must comply with current IEC/CEE requirements and with all applicable local, national, and international codes.

• For all ovens equipped with casters,

the gas line connection

shall be made with:

- A connector that complies with the Standard for

Connectors for Movable Gas Appliances, ANSI Z21.69 (in USA), or Connectors for Movable Gas Appliances, CAN/CGA-6.16 (in Canada).

Check the oven’s gas supply requirements to determine the type of gas to be used with the oven. If the gas type required does NOT match the local supply:

• For North American installations,

a conversion kit is supplied with the oven to allow operation using propane gas. Refer to Part B,

Gas Conversion, in this section.

• For CE ovens, directions for converting the oven for use with other gases are described in Part D.1, Preparation for Use with Various Gases, in this section.

If the installation will use the supplied gas hose, be sure that the 1/2" to 3/4" gas line fitting is attached. Refer to the instructions in the gas hose package. One gas line connection method is shown in Figure 2-15; however, compliance with the applicable standards and regulations is mandatory.

Inlet and regulated gas pressures can be measured using a “U” tube manometer at the tap locations shown in Figures 2-15 and 2-16.

Figure 2-15 - Flexible Gas Hose Installation

1/2" gas

pipe nipple

1/2" gas line

tee with

pressure tap

Quick-

disconnect

device

3/4"-1/2" gas pipe

reducer

3/4" gas

pipe nipple

90°

Elbow

Flexible

Gas Hose

To Gas Supply

Pipe

Full-Flow

Individual gas

connection for

each oven

cavity

Gas

Shutoff

Valve

1. Checking the Gas Supply (Inlet) Pressure

a. With the main gas supply valve closed and the circuit

breaker/fused disconnect in the OFF ("O") position, open the inlet pressure tap shown in Figure 2-16 and attach a manometer to the tap.

b. Depress the safety switches to allow the oven to operate.

c. Open the main gas supply valve. Switch the circuit breaker/

fused disconnect to the ON ("I") position.

d. Start the oven according the directions in the

Operation section of this Manual. Adjust the temperature controller to the maximum setting (316°C).

e. Measure the supply (inlet) pressure.

f. Switch the oven off. Close the main gas supply valve, and

switch the circuit breaker/fused disconnect to the OFF ("O") position. Remove the manometer, and close the inlet tap.

g. Compare the measured supply (inlet) pressure to the

nominal pressures shown in Table 1-5 (in the

Description

section of this Manual).

If the supply pressure is lower or higher than the nominal pressure, the reason should be investigated and the gas supplier contacted.

For natural gas ovens, if the measured supply pressure is lower than 0.247psi, or higher than 0.363psi, contact the gas supplier. DO NOT OPERATE THE OVEN or adjust the oven controls.

2. Adjusting the Orifice (Manifold) Pressure and Heat Input

To use the orifice pressure method, you must know the specific gas type and quality used. If using the orifice pressure method, you should double-check the input using the volumetric method.

To use the volumetric method, you must know the heat value (HuB) of the gas used. This information is available from your gas supplier.

During these measurements, do not operate any other appliances that use the same gas meter as the oven.

a. Orifice (Manifold) Pressure Method

1. With the main gas supply valve closed and the circuit

breaker/fused disconnect in the OFF ("O") position, open the manifold pressure tap shown in Figure 2-16 and attach a manometer to the tap.

2. Remove the cap screw from the pressure adjustment

screw (governor) on the gas control valve.

3. Depress the safety switches to allow the oven to

operate.

4. Open the main gas supply valve. Switch the circuit

breaker/fused disconnect to the ON ("I") position.

5. Start the oven according the directions in the Operation

section of this Manual. Adjust the temperature controller to the maximum setting (316°C).

6. Adjust the pressure adjustment screw as necessary

to match the correct pressure for the oven's specific gas type. Refer to Table 1-5 in the Description section of this Manual. Turning the adjustment screw clockwise increases the flow, while turning it counterclockwise reduces the flow.

7. Switch the oven off. Close the main gas supply valve,

and switch the circuit breaker/fused disconnect to the OFF ("O") position. Remove the manometer, and close the manifold pressure tap.

SECTION 2 - INSTALLATION

b. Volumetric Method

1. Determine the time of 0.1m

(100 liters) of gas usage

as follows.

Consumption (m

/hr.) =

NB (Rated input in kW)

HuB (Heat [Calorific] value

of gas in kW/m3)

Time (in minutes) of

0.1m3 of gas usage

Consumption

2. Check that the main gas supply valve and the circuit breaker/fused disconnect are in the OFF ("O") position.

3. Remove the cap screw from the pressure adjustment screw (governor) on the gas control valve.

4. Depress the safety switches to allow the oven to operate.

5. Open the main gas supply valve. Switch the circuit breaker/fused disconnect to the ON ("I") position.

6. Start the oven according the directions in the section of this Manual. Adjust the temperature controller to the maximum setting (316°C).

7. Adjust the pressure adjustment screw as necessary to match the calculated volume using the time (in minutes) of 0.1m3 of gas usage. Turning the adjustment screw clockwise increases the flow, while turning it counterclockwise reduces the flow.

8. Record the reading obtained from the gas meter and calculate the obtained gas flow. Compare this value to the information in Tables 1-4 and 1-5 in the Description section of this Manual.

9. Switch the oven off. Close the main gas supply valve, and switch the circuit breaker/fused disconnect to the OFF ("O") position. Replace the cap screw onto the gas control valve.

Figure 2-16 - Gas Control Valve

Manifold

pressure tap

(where regulated

gas pressure is

measured)

Pressure adjustment

screw (under cap)

ENGLISH

Operation

ENGLISH

SECTION 3 - OPERATION

I. LOCATION AND DESCRIPTION OF CONTROLS

"BLOWER" Switch: Turns the blowers and

cooling fans on and off. The HEAT Switch has no effect unless the BLOWER Switch is in the “ON” position.

"HEAT" Switch: Allows the burner to activate. Activation is determined by the settings on the Digital Temperature Controller.

"CONVEYOR" Switch: Turns the conveyor drive motor on and off.

Conveyor Speed Controller: Adjusts and displays the bake time. Single-belt ovens have one controller. Split belt ovens have one controller for each conveyor belt, labeled "FRONT" and "BACK."

Digital Temperature Controller: Continuously

monitors the oven temperature. Settings on the Digital Temperture Controller control the activation of the burner. Keypad controls allow the operator to select the cooking temperature and monitor oven operation.

NOT SHOWN:

F. Machinery and Control Compartment Safety Switches:

Disconnect electrical power to the controls and blowers when EITHER the machinery compartment door OR the control compartment door is opened. The doors should only be opened by authorized service personnel.

II. NORMAL OPERATION - STEP-BY-STEP

A. DAILY STARTUP PROCEDURE

1. Check that the circuit breaker/fused disconnect is in the on position. Check that the window is closed.

2. Turn the "BLOWER" ( ) switch to the “ON” ("I") position.

3. Turn the "CONVEYOR" (

) switch to the “ON”

("I") position.

SECTION 3 - OPERATION

7. Wait for the oven to heat to the setpoint temperature. Higher setpoint temperatures will require a longer wait. The oven can reach a temperature of 500°F (232°C) in approximately 5 minutes.

(Optional)

perature ( the Actual Temperature

in the display, and wait for the "ACTUAL TEMP" light to turn on. This allows you to monitor the oven temperature as it rises to the setpoint.

9. Allow the oven to preheat for 10 minutes after it has reached the set point temperature.

B. DAILY SHUTDOWN PROCEDURE

Press the Tem-

) key to show

wait

for

ENGLISH

4. If necessary, adjust the conveyor speed setting by pressing the pushbuttons on the conveyor speed controller to change the displayed bake time.

5. Adjust the temperature controller to a desired set temperature, if necessary.

• Press the Set Point

and Unlock keys at the same time. Wait for the "SET PT" light to turn on.

• Press the Up Arrow

and Down Arrow Keys as necessary to adjust the setpoint.

6. Turn the "HEAT" ( ) switch to the "ON" ("I") position, and wait for the "HEAT ON" light to turn on.

wait

for

wait

for

1. Turn the "HEAT" ( "BLOWER" ( ches to the "OFF" ("O")

position. Note that the blowers will remain in operation until the oven has cooled to below 200°F (93°C).

2. Make certain that there are no products left on the conveyor inside the oven. Turn the "CONVEYOR" ( ) switch to the "OFF" ("O") position.

3. Open the window to allow the oven to cool faster.

4. After the oven has cooled and the blowers have turned off, switch the circuit breaker/fused disconnect to the off position.

) and

) swit-

IMPORTANT

On gas ovens, if the "HEAT ON" light will not illuminate, OR if the oven does not heat, the gas burner may not have lit. Turn the "HEAT" ( (

) switches to the "OFF" ("O") position. Wait for AT LEAST FIVE MINUTES before restarting the oven. Then, repeat the Daily Startup procedure.

), "BLOWER" ( ), and "CONVEYOR"

CAUTION

In case of power failure, turn all switches to the “OFF” ("O") position, open the oven window, and remove the product. After the power has been restored, perform the normal startup procedure. IF THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 MINUTES, WAIT FOR AT LEAST FIVE MINUTES BEFORE RESTARTING THE OVEN.

The burner will not operate and gas will not flow through the burner without electric power. No attempt should be made to operate the oven during a power failure.

SECTION 3 - OPERATION

III. QUICK REFERENCE: DIGITAL TEMPERATURE CONTROLLER

ENGLISH

"SP LOCK"

Light

Lights when the set point is locked out from changes.

This setting can

only be changed by

service personnel.

OVERTEMP

Light

Lights when the oven

temperature is

greater than 650°F

(343°C). Refer to

Quick Reference:

Troubleshooting in

this section.

Display

Shows the Set Point

or the Actual Tem-

perature in degrees

Fahrenheit (F) or

Celsius (C).

"HEAT ON"

Light

Lights when the

burner is in

operation.

"SET PT" (setpoint)

Light

Lights when the

set point is shown

in the display.

"ACTUAL

TEMP" Light

Lights when the

Actual Tempera-

ture is shown in

the display.

Temperature

Key

Press this key once

to view the Actual

Temperature in the

Display.

together with the Set

Point Key to allow the

changed. Changes

can only be made for

Unlock Key

Press this key

Set Point to be

60 seconds.

Up Arrow and Down

Arrow Keys

Press these keys to

adjust the Set Point up or

down. If the Set Point will

not change, refer to Set

Point Key and Unlock Key

in this section.

Service Key

Service use

only.

Set Point Key

Press this key

together with the

Unlock Key to allow

the Set Point to be

changed.

Changes can only be

made for 60 sec-

onds.

SECTION 4 - MAINTENANCE

WARNING

Before ANY cleaning or servicing of the oven, perform the following procedure:

1. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.

2. Turn the full-flow gas safety valve to the off position.

3. Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven.

4. If it is necessary to move a gas oven for cleaning or servicing, disconnect the gas supply before moving the oven.

When all cleaning and servicing is complete:

1. If the oven was moved for servicing, return the oven to its original location.

2. Reconnect the gas supply.

3. Reconnect the electrical supply.

4. Turn on the full-flow gas safety valve. Test the gas line connections for leaks using approved leak test substances or thick soap suds.

5. Turn on the electric supply circuit breaker(s).

6. Perform the normal startup procedure.

WARNING

Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric

supply BEFORE beginning to disassemble, clean, or service any oven. Never disassemble or clean an oven with the

BLOWER ( ) switch or any other circuit of the oven switched on.

CAUTION

NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this oven. To avoid saturating the oven insulation, DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake chamber surfaces.

NOTE

ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Middleby Marshall Authorized Service Agent.

I. MAINTENANCE - DAILY

A. Check that the oven is cool and the power is disconnected,

as described in the warning at the beginning of this Section.

B. Clean ALL of the cooling fan grills and vent openings with a

stiff nylon brush. Refer to Figure 4-1 for the locations of the grills and vents.

C. Clean the outside of the oven with a soft cloth and mild

detergent.

D. Check that ALL cooling fans are operating properly.

CAUTION

If a cooling fan is not operating correctly, it must be replaced IMMEDIATELY. Operating the oven without adequate cooling can seriously damage the oven's internal components.

E. Clean the conveyor belts with a stiff nylon brush. This is

more easily accomplished by allowing the conveyor to run while you stand at the exit end of the conveyor. Then, brush the crumbs off the conveyor as it moves.

F. Remove and clean the crumb trays. If necessary, refer to

Figure 2-13 (in Section 2, Installation) when replacing the crumb trays into the oven.

G. Clean the window in place.

Vents on

front panel

of oven

Figure 4-1 -Cooling Vents and Grills

ENGLISH

Vents on rear

of control

compartment

door

Fan grills (2) on rear

of oven and control

compartment

Vent (1) on rear

of machinery compartment

II. MAINTENANCE - MONTHLY

A. Check that the oven is cool and the power is disconnected,

as described in the warning at the beginning of this Section.

B. Refer to Part D, Conveyor Installation, in the Installation

ENGLISH

section of this Manual. Then, remove the following components from the oven:

• Conveyor end stop

• Crumb trays

• Chain cover

• Drive chain

• End plugs

• Conveyor assembly

C. Slide the air fingers and blank plates out of the oven, as

shown in Figure 4-2. AS EACH FINGER OR PLATE IS REMOVED, WRITE A "LOCATION CODE" ON IT WITH A MARKER to make sure that it can be reinstalled correctly.

Example of markings: (Top Row) T1 T2 T3 T4 (Bottom Row) B1 B2 B3 B4

D. Disassemble the air fingers. See Figure 4-3. AS EACH

FINGER IS DISASSEMBLED, WRITE THE "LOCATION CODE" FOR THE FINGER ON ALL THREE OF ITS PIECES. This will help you in correctly reassembling the air fingers.

CAUTION

Incorrect reassembly of the air fingers will change the baking properties of the oven.

E. Clean the air finger components and the interior of the

baking chamber using a vacuum cleaner and a damp cloth. Refer to the boxed warnings at the beginning of this Section for cleaning precautions.

F. Reassemble the air fingers. Then, replace them in the

oven, using the "location code" as a guide.

G. Install the end plugs on the oven. Then, reinstall the

conveyor.

I. Reattach the drive chain. Replace the chain cover.

J. Check the tension of the conveyor belt as shown in Figure

2-11 (in Section 2, Installation). The belt should lift about 1" (25mm). If necessary, adjust the belt tension using the procedure in Part D (Conveyor Installation) in the Installation section of this Manual.

K. Replace all components onto the oven.

SECTION 4 - MAINTENANCE

Figure 4-2 - Removing Air Fingers and Plates

Figure 4-3 - Disassembling the Air Fingers

Outer Plate

Inner plate

Manifold

III. MAINTENANCE - EVERY 3 MONTHS

A. Check that the oven is cool and the power is disconnected,

as described in the warning at the beginning of this Section.

B. Open the machinery compartment access panel. Vacuum

the inside of the compartment using a shop vacuum.

C. Tighten all electrical control terminal screws.

D. Split Belt Disassembly and Cleaning

1. Refer to Part D, Conveyor Installation, in the Installation section of this Manual. Then, remove the following components from the oven:

• Conveyor end stop

• Crumb trays

• Chain cover

• Drive chains

• End plugs

• Conveyor assembly

SECTION 4 - MAINTENANCE

2. Remove the master links from each conveyor belt. Then, roll the belts up along the length of the conveyor to remove them from the frame.

3. Remove the two conveyor adjustment screws from the idler end of the conveyor frame, as shown in Figure 4-

4. Remove the idler shaft assembly from the conveyor.

5. Pull apart the two sections of the idler shaft.

6. Clean the shafts thoroughly using a rag. Then, lubricate both the extended shaft and the interior of the hollow shaft using a light food-grade lubricant. DO NOT lubricate the shafts using WD40 or a similar product. This can cause the shafts to wear rapidly.

7. Before reassembling the shafts into the conveyor frame, check that they are oriented properly.

8. Reassemble the idler shaft into the conveyor. sure that the bronze washer is in place between the two sections of the shaft. See Figure 4-4.

9. Replace the conveyor adjustment screws as shown in Figure 4-4. To allow the conveyor belt to be reinstalled later, do not tighten the screws at this time.

10. Loosen the set screw on both of the conveyor drive sprockets. Then, remove the sprockets from the shaft.

11. Check the conveyor configuration as follows:

• High-speed conveyors are equipped with large

flange bearings at both ends of the shaft, as shown in Figure 4-5. For these conveyors, remove the two screws that hold each bearing to the conveyor frame. With the screws removed, lift the end of the shaft at the front of the oven, and pull the entire assembly free of the conveyor frame.

• Standard conveyors are equipped with bronze

bushings mounted on spacers at both ends of the shaft, as shown in Figure 4-5. For these conveyors, remove the two screws that hold the bracket to the conveyor frame. With the screws removed, lift the end of the shaft at the front of the oven, and pull the entire assembly free of the conveyor frame. The brackets will be removed along with the drive shaft assembly.

12. Disassemble and lubricate the two sections of the drive shaft as described for the idler shaft, above.

13. Before reassembling the shafts into the conveyor frame, check that they are oriented properly.

14. Reassemble the drive shaft into the conveyor. Make sure that the bronze washer is in place between the two sections of the shaft. See Figure 4-6.

15. Replace the drive sprockets. Reassemble the belts and master links onto the conveyor.

16. Reinstall the end plugs and conveyor onto the oven.

17. Reattach the drive chains. Replace the chain cover.

18 Check the tension of the conveyor belt as shown in

Figure 2-11 (in Section 2, Installation). The belt should lift about 1" (25mm). If necessary, adjust the belt tension by turning the conveyor adjustment screws.

19. Replace all components onto the oven.

Make

Flange bearing

(used with high-

speed conveyors)

Figure 4-4 - Disassembling the idler shaft

Disassemble,

lubricate shafts

Bronze

washer

Remove

adjustment

screws

Figure 4-5 - Drive shaft configurations

Bronze bushing with

spacer (used with

standard conveyors)

Figure 4-6 - Disassembling the drive shaft

Disassemble,

clean, and

lubricate shafts

Flange bearing

shown (used with

high-speed

conveyors)

remove drive

Remove 2 screws and nuts per

side to free bearings/brackets

clean, and

ENGLISH

Remove

idler

shaft

assembly

Loosen set screws and

sprockets

E. Blower Belt

1. Remove the six screws shown in Figure 4-7. Then, remove the rear panel from the oven.

2. Check the blower belt for the proper 1/4" (6mm) deflection at the center, and for cracking or excessive wear.

ENGLISH

See Figure 4-7. Overtightening the belt will cause premature bearing failure and possible vibrations. A loose belt may also cause vibrations.

3. If necessary, adjust the tension of the belt by loosening the four motor mounting bolts. Reposition the motor as neccessary until the correct 1/4" (6mm) deflection is reached, then tighten the bolts.

F. Lubricating the Blower Fan Bearings

1. Use a grease gun to lubricate the main blower fan shaft bearings, as shown in Figure 4-7.

When lubricating the bearings:

• Use a high-quality NLGI #2, lithium soap grease with

petroleum oil, such as Middleby P/N 17110-0015.

• Add the grease slowly until a small bead of grease

is present at the seals.

AVOID OVERGREASING.

Excessive greasing may cause harm to the bearing.

2. Manually turn the blower shaft by pulling on the belt to purge the grease. Wipe off any excess grease.

3. Replace the rear panel onto the oven.

IV. MAINTENANCE - EVERY 6 MONTHS

A. Check that the oven is cool and the power is disconnected, as

described in the warning at the beginning of this Section.

B. Check for excessive wear on the conveyor drive motor

brushes. The brushes should be replaced if they have worn to less than 1/4" (6mm) in length. Be sure to replace the brushes in exactly the same position.

C. For gas ovens, inspect and clean the burner nozzle and the

spark electrode assembly.

D. Check the conveyor drive shaft bushings and spacers.

Replace the components if they are worn.

Figure 4-7 - Rear panel access

Remove six (6)

screws to remove

rear panel

Bearings

(2 total)

Grease fitting

(1 per

bearing)

Blower belt

Blower motor

Loosen four (4) screws to adjust

motor position and belt tension

SECTION 5 - PARTS LIST

ENGLISH

I. KEY SPARE PARTS KIT

ITEM QTY. P/N DESCRIPTION

1 1 47321 DIGITAL TEMPERATURE CONTROLLER

2 1 51067 CONVEYOR DRIVE MOTOR W/PICKUP ASSY.

3 2 30153 DRIVE MOTOR BRUSHES

4 1 37337 KIT, CONVEYOR SPEED CONTROLER

5 1 33984 KIT, THERMOCOUPLE 6″

6 1 50517 BELT, BLOWER

7 1 44687 MOTOR, BLOWER, 208/230V, 1/2HP

8 1 33983 HIGH LIMIT CONTROL MODULE, 240V

9 1 36451 COOLING FAN (BACKWALL)

10 1 97525 COOLING FAN (CONTROL COMPARTMENT)

11 1 37498 AIR SWITCH

12 1 48455 IGNITOR

13 1 50249 COMBINATION GAS CONTROL VALVE (SAFETY REGULATOR)

14 1 41647 MODULATING GAS VALVE, M420, 1/2″

15 1 31651 AMPLIFIER BOARD

16 1 50239 IGNITION MODULE

17 1 50240 IGNITION CABLE, 25″

ENGLISH

OPTIONAL

SECTION 5 - PARTS LIST

ENGLISH

II. INSTALLATION KIT

Gas hose reducer included with gas hose.

″

to 1/2

″

3/4

AUTHORIZED SERVICE AGENCY LISTING

OWNER'S OPERATING MANUAL, PS536 GAS OVENS

QTY. QTY. QTY.

ITEM SINGLE OVEN DOUBLE OVEN TRIPLEOVEN P/N DESCRIPTION

1 1 1 1 48605 TOP PANEL

2 2 4 4 3A80A8801 SCREW, PAN HEAD #10 x 2"

3 1 1 1 42893 BASE PAD

4a 4 4 -- 42890 17-1/2" (445mm) LEG EXTENSION, FOR SINGLE AND DOUBLE OVENS

4c -- 4 -- 45329 25-1/2" (648mm) LEG EXTENSION,

4b -- 4 -- 45360 20-1/2" (521mm) LEG EXTENSION,

5 2 2 2 22290-0009 CASTER, WITH FLAT PLATE AND BRAKE

4d -- -- 4 44799 6" (152mm) LEG EXTENSION, FOR TRIPLE OVENS

6 2 2 2 22290-0010 CASTER, WITH FLAT PLATE (NO BRAKE)

7 1 1 1 21392-0004 EYEBOLT, 3/4"

8 31 31 31 220373 HEX BOLT, 3/8"-16 x 1"

9 32 32 32 21416-0001 FLAT WASHER, 3/8"

10 32 32 32 21422-0001 LOCKWASHER, 3/8"

11 1 1 1 22450-0228 RESTRAINT CABLE ASSEMBLY

12 1 2 3 22361-0001 GAS HOSE,

13 1 1 1 50236

14 1 1 1 1002040 MIDDLEBY MARSHALL

15 1 1 -- 46393 LOWER SHELF

16 1 2 3 50276 KIT, LP

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

ESPAÑOL

página 85

CHAIN COVER, UPPER

OVENS WITH RIGHT-SIDE CONTROLS

LEFT-SIDE

SECTION 5 - PARTS LIST

DOOR, CONTROL COMPARTMENT-FOR

OVENS WITH LEFT-SIDE CONTROLS

OVENS WITH RIGHT-SIDE CONTROLS

DOOR, MACHINERY COMPARTMENT-FOR

OVENS WITH LEFT-SIDE CONTROLS

page 1

ENGLISH

seite 29

DEUTSCH

See pp. 36-39

13 1 47633 BACK WALL

14 1 36451 COOLING FAN

15 1 31497 FINGER GUARD, COOLING FAN

ITEM QTY. P/N DESCRIPTION

16 1

17 1 49938 DOOR, CONTROL COMPARTMENT-FOR

18 1 48687 DOOR, MACHINERY COMPARTMENT-FOR

19a 2 43252 END PLUG, TOP

20 2 42771 SLIDE, OUTER SIDE

19b 2 43252 END PLUG, BOTTOM

III. PANELS, END PLUGS AND WINDOW

Not available

21 8 36452 WING NUT, PLASTIC

22 8 45449 BRACKET, END PLUG MOUNTING

ITEM QTY. P/N DESCRIPTION

17b 1

IIIa. PANELS, END PLUGS WITHOUT WINDOW

Not available

20 2 42771 SLIDE, OUTER SIDE

21 8 36452 WING NUT, PLASTIC

18a 1 48687 DOOR, MACHINERY COMPARTMENT-FOR

19a 2 43252 END PLUG, TOP

18b 1

19b 2 43252 END PLUG, BOTTOM

22 8 45449 BRACKET, END PLUG MOUNTING

page 57

FRANÇAIS

página 85

ESPAÑOL

CHAIN COVER, UPPER

OVENS WITH RIGHT-SIDE CONTROLS

1 1 50172 WINDOW SHROUD

2 1 22500-0021 NAMEPLATE, "MIDDLEBY MARSHALL"

ITEM QTY. P/N DESCRIPTION

3 1 48437 HEAT GUARD PLATE

4 2 30927 BUMPER

5 1 48512 ASSEMBLY, WINDOW (INC. ITEMS 6-7)

6 1 47611 WINDOW FRAME WITH HANDLE

7 1 47837 WINDOW GLASS, PRE-CUT

8 2 34121-0003 PIVOT SCREW

9 1 49920 WINDOW LATCH ASSEMBLY

10 1 49921 SPACER BLOCK

11 2 18A1S19 SCREW, HEX HD 1/4"-20 X 1"

12 1 48605 TOP PANEL

See pp. 36-39

2 1 22500-0021 NAMEPLATE, "MIDDLEBY MARSHALL"

11 2 18A1S19 SCREW, HEX HD 1/4"-20 X 1"

12 1 48605 TOP PANEL

13 1 47633 BACK WALL

14 1 36451 COOLING FAN

15 1 31497 FINGER GUARD, COOLING FAN

ITEM QTY. P/N DESCRIPTION

16 1

17a 1 49938 DOOR, CONTROL COMPARTMENT-FOR

ENGLISH

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DEUTSCH

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FRANÇAIS

page 57

ESPAÑOL

página 85

SECTION 5 - PARTS LIST

page 1

ENGLISH

SEC, 200VA

QTY. QTY.

12 1 1 35145 RESET SWITCH, HIGH LIMIT

13 1 1 31504 TRANSFORMER, 230V PRI : 120V

14 1 1 37498 AIR SWITCH

15 2 2 31047 TERMINAL BLOCK, 8-POLE

ITEM SINGLE BELT SPLIT BELT P/N DESCRIPTION

16 1 1 97525 COOLING FAN, 230V

IV. CONTROL COMPARTMENT

ACCESS

17 1 1 27470-0004 FINGER GUARD, COOLING FAN

18 1 1 F716A8701 GROUND LUG

19 1 1 44390 TERMINAL BLOCK, 3-POLE

20 1 1 49977 COVER PLATE, TERMINAL BLOCK

21 1 2 51067 MOTOR, CONVEYOR DRIVE

22 1 1 33812-1 KIT, THERMOCOUPLE

21a 1 2 50163 PICKUP

FOR RIGHT-SIDE

23 1 1 49938 DOOR, CONTROL COMPARTMENT,

24 1 1 33813 RFI FILTER

seite 29

DEUTSCH

page 57

FRANÇAIS

CONTROLLER

QTY. QTY.

1 1 1 47321 DIGITAL TEMPERATURE

2 1 1 48511 DECAL, CONTROL PANEL

ITEM SINGLE BELT SPLIT BELT P/N DESCRIPTION

3 1 2 37337 KIT, CONVEYOR SPEED CON-

TROLLER WITH DIGITAL DISPLAY

(INC. ITEM 3a)

KNOB AND CONTACT BLOCK

MOTORS)

4 3 3 46521 KIT, SELECTOR SWITCH WITH

5 1 2 48635 CIRCUIT BREAKER, 0.3A (DRIVE

6 2 2 46831 CIRCUIT BREAKER, 8A (BLOWER

3a 1 2 37503 DIGITAL DISPLAY ONLY

7 2 2 45036 CIRCUIT BREAKER, 3A (CONTROL

CIRCUIT)

8 1 1 28021-0047 SAFETY SWITCH

9 1 1 28041-0011 CONTACTOR

240V

10 2 2 33363 END STOP, CONTACTOR

11 1 1 33983 HIGH LIMIT CONTROL MODULE,

página 85

ESPAÑOL

ENGLISH

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DEUTSCH

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FRANÇAIS

page 57

ESPAÑOL

página 85

(2.3749mm, #42 DRILL)

#53 DRILL)

LEFT-SIDE

SECTION 5 - PARTS LIST

(2.0574mm, #46 DRILL)

(1.3208mm, #55 DRILL)

page 1

ENGLISH

seite 29

DEUTSCH

17 1 33812-1 KIT, THERMOCOUPLE

18 1 48687 DOOR, MACHINERY COMPARTMENT-FOR

19 1 48489 ASSEMBLY, BURNER TUBES

20 1 49955 HOUSING, INSHOT BURNERS

21 1 47654 COVER PLATE, INSHOT BURNER HOUSING

22 3 44983 BURNER, INSHOT

23 1 48455 IGNITOR

16a 3 44984 ORIFICE, MAIN, NATURAL GAS 0.0935"

ITEM QTY. P/N DESCRIPTION

16b 3 47320 ORIFICE, MAIN, PROPANE 0.0595" (1.5113mm,

24 1 50240 IGNITION CABLE, 25" (635mm)

V. MACHINERY COMPARTMENT AND GAS TRAIN

in this location. The opening provides passive

NOTE: The oven does NOT have a cooling fan

cooling only.

(SAFETY REGULATOR)

25 1 50276 KIT, LP

-- 1 49951 ORIFICE, BYPASS, NATURAL GAS 0.0810"

NOT SHOWN:

-- 1 49948 ORIFICE, BYPASS, PROPANE 0.0520"

page 57

FRANÇAIS

página 85

ESPAÑOL

1 1 27470-0004 FINGER GUARD

ITEM QTY. P/N DESCRIPTION

2 1 31047 TERMINAL BLOCK, 8-POLE

3 1 32108 TRANSFORMER, 240V PRI : 24V SEC, 65VA

4 1 28021-0047 SAFETY SWITCH

5 1 45644 CIRCUIT BREAKER, 1A

6 1 41872 TRANSFORMER, 240V PRI : 24V SEC, 25VA

7 1 31651 AMPLIFIER BOARD

8 1 50239 IGNITION MODULE

9 2 23051-0003 UNION, 1/2" PIPE

10 1 52291 COMBINATION GAS CONTROL VALVE

11 1 41647 MODULATING GAS VALVE, M420, 1/2"

12 A/R 48740 TUBE, ALUMINUM, 1/4" (6.35mm) O.D. (BULK)

13 2 44888 COMPRESSION FITTING, 1/4" TUBE

14 1 49940 MANIFOLD

15 2 30002 TAP PLUG

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

ESPAÑOL

página 85

(50260) WITH BUSHING (50259)

SECTION 5 - PARTS LIST

page 1

ENGLISH

seite 29

DEUTSCH

11 4 A11687 SCREW, HEX CAP HEAD 5/16"-18 X 7/8"

12 4 B301A8847 FLAT WASHER, 5/16"

13 4 A3682 LOCK WASHER, 5/16"

14 1 50256 KIT, RPM, (50/60Hz) CONTAINS SHEAVE

15 1 50224 PULLEY, BLOWER SHAFT

16 1 50517 BELT, (50/60Hz)

17 1 28021-0061 SAFETY SWITCH

18 1 47633 BACK WALL

19 1 36451 COOLING FAN

ITEM QTY. P/N DESCRIPTION

20 1 31497 FINGER GUARD, COOLING FAN

VI. REAR COMPARTMENT AND BLOWERS

REAR OF OVEN)

OF OVEN)

GREASE

page 57

FRANÇAIS

página 85

ESPAÑOL

1 2 42951 INLET RING

ITEM QTY. P/N DESCRIPTION

2a 1 42752 BLOWER WHEEL, RIGHT (VIEWED FROM

3 2 42999 RETAINER, TEFLON SEAL

4 2 35121-0045 TEFLON SEAL

2b 1 42753 BLOWER WHEEL, LEFT (VIEWED FROM REAR

5 2 22072-0025 BEARING, 5/8" BORE WITH STANDARD

6 2 50160 GASKET, BEARING

7 2 50151 BLOWER SHAFT

8 1 44748 COUPLING, BLOWER SHAFT

-- -- 17110-0015 GREASE, MM STANDARD CARTRIDGE

9 1 44687 MOTOR, BLOWER, 208/230V, 1/2HP

10 1 44688 PLATE, MOTOR MOUNTING

ENGLISH

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DEUTSCH

seite 29

FRANÇAIS

page 57

ESPAÑOL

página 85

SECTION 5 - PARTS LIST

OPT.

(OPT.

OPT. ON 60" & 56")

PICKUP

ASSEMBLY, CONVEYOR MO-

TOR AND PICKUP (INC. ITEM 23a)

- - - - >

51067

< - - - -

P/N - 60" P/N - 56" P/N - 76"

23 1

ITEM QTY. CONVEYOR CONVEYOR CONVEYOR DESCRIPTION

SPROCKET, CONVEYOR DRIVE

MOTOR, 20T (STANDARD)

- - - - >

50163

34128

< - - - -

23a 1

24a 1

MASTER LINK, DRIVE CHAIN

SPROCKET, CONVEYOR DRIVE

SHAFT, 20T

ITEM 26a)

- - - - >

22159-0003

< - - - -

25 1

- - - - >

3101212

< - - - -

26 1 50050 50050 50052 ASSEMBLY, DRIVE CHAIN (INC.

26a 1

CONTROLS

OVENS WITH RIGHT-SIDE

27a 1 48851 48851 50029 ASSEMBLY, CHAIN COVER-FOR

27b 1 <--- Not available ---> ASSEMBLY, CHAIN COVER-FOR

OVENS WITH LEFT-SIDE

CONTROLS

STANDARD

HIGH SPEED

29a 1 48707 48706 48708 CRUMB PAN, DRIVE SIDE

28a 1 50057 50055 50059 BELT, CONVEYOR, 18"/457mm,

28b 1 50057 50055 50059 BELT, CONVEYOR, 18"/457mm,

29b 1 48707 48707 48708 CRUMB PAN, IDLER SIDE

60" & 56" CONVEYORS,

VEYOR,

30 1 50044 50044 50044 END STOP (STD. ON 76" CON-

ON 76")

ON ALL CONVEYORS)

31a 1 50040 50040 50040 EXIT TRAY, 8"/203mm (STD. ON

31b 1 50023 50023 50023 EXIT TRAY, 20"/508mm

32 1 50235 50235 50235 PLATE MOTOR COVER ASSY

page 1

ENGLISH

seite 29

DEUTSCH

page 57

FRANÇAIS

VII. SINGLE-BELT CONVEYORS

DRIVE SHAFT

SPROCKET, CONV. BELT

SPACER

BUSHING, BRONZE 5/8" I.D.

ASSEMBLY, STANDARD DRIVE

SHAFT (INC. ITEMS 3-8)

- - - - >

48797

< - - - -

P/N - 60" P/N - 56" P/N - 76"

1 1 48847 48847 48790 FRAME, DRIVE SIDE

ITEM QTY. CONVEYOR CONVEYOR CONVEYOR DESCRIPTION

48781

< - - - -

43275

22229-0003

< - - - -

22034-0003

< - - - -

SPACER, NYLON

BRACKET, DRIVE SUPPORT

- - - - >

49972

35000-1080

< - - - -

DRIVE SHAFT

SPROCKET, CONV. BELT

ASSEMBLY, HIGH SPEED DRIVE

SHAFT (INC. ITEMS 10-11)

- - - - >

48782

48781

22229-0003

< - - - -

10 1

11 4

IDLER SHAFT

SPROCKET, CONV. BELT

BUSHING, BRONZE 5/8" I.D.

FLANGE BEARING (HIGH SPEED

ONLY)

- - - - >

45377

< - - - -

12 2

ITEMS 15-19)

- - - - >

48779

22229-0003

22034-0003

< - - - -

13 1 48746 48784 48795 FRAME, IDLER SIDE

14 1 48780 50032 48780 ASSEMBLY, IDLER SHAFT (INC.

15 1

16 4

17 2

BRACKET, IDLER SUPPORT

PIVOT PLATE

LOCKNUT, HEX 3/8"-16 SS

- - - - >

35900-0020

< - - - -

19 2

18 2 37000-0413 50033 37000-0413 BRACKET, IDLER ADJUSTMT.

- - - - >

35900-0398

21176-0002

< - - - -

20 2 35000-1008 50028 35000-1008 SCREW, IDLER ADJUSTMENT

21 2

22 4

página 85

ESPAÑOL

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

ESPAÑOL

página 85

SECTION 5 - PARTS LIST

OPT.

(OPT.

OPT. ON 60" & 56")

PICKUP

ASSEMBLY, CONVEYOR MO-

TOR AND PICKUP (INC. ITEM 23a)

- - - - >

51067

< - - - -

P/N - 60" P/N - 56" P/N - 76"

23 2

ITEM QTY. CONVEYOR CONVEYOR CONVEYOR DESCRIPTION

SPROCKET, CONVEYOR DRIVE

MOTOR, 20T (STANDARD)

- - - - >

50163

34128

< - - - -

24 2

23a 1

SPROCKET, CONVEYOR DRIVE

SHAFT, 20T (STANDARD AND

HIGH SPEED)

- - - - >

22159-0003

< - - - -

25 2

BELT (LONG - INC. ITEM 27c)

FRONT BELT (SHORT - INC. ITEM

27c)

26 1 < - - - - 35900-0023 - - - - > BUSHING, DRIVE SPROCKET

27a 1 50050 50050 50053 ASSEMBLY, DRIVE CHAIN, REAR

27b 1 50051 50051 50052 ASSEMBLY, DRIVE CHAIN,

MASTER LINK, DRIVE CHAIN

STANDARD

HIGH SPEED

- - - - >

3101212

< - - - -

28 1 48851 48851 50029 ASSEMBLY, CHAIN COVER

27c 1

29a 2 50056 50054 50058 BELT, CONVEYOR, 9"/229mm,

30a 1 48707 48707 48708 CRUMB PAN, DRIVE SIDE

29b 2 50056 50054 50058 BELT, CONVEYOR, 9"/229mm,

60" & 56" CONVEYORS,

VEYOR,

31 50044 50044 50044 END STOP (STD. ON 76" CON-

30b 1 48707 48706 48708 CRUMB PAN, IDLER SIDE

ON 76")

ON ALL CONVEYORS)

32a 1 50040 50040 50040 EXIT TRAY, 8"/203mm (STD. ON

32b 1 50023 50023 50023 EXIT TRAY, 20"/508mm

page 1

ENGLISH

seite 29

DEUTSCH

page 57

FRANÇAIS

VIII. SPLIT-BELT CONVEYORS

SPLIT DRIVE SHAFT - MAIN

SPLIT DRIVE SHAFT - SLEEVE

FLAT WASHER, BRONZE

ASSEMBLY, SPLIT DRIVE

SHAFT, STANDARD AND HIGH

SPEED (INC. ITEMS 3-6)

- - - - >

48759

< - - - -

P/N - 60" P/N - 56" P/N - 76"

1 1 48847 48847 48790 FRAME, DRIVE SIDE

ITEM QTY. CONVEYOR CONVEYOR CONVEYOR DESCRIPTION

- - - - >

49969

21415-0001

< - - - -

4 1 < - - - - 48837

SPROCKET, CONV. BELT

SPACER (STANDARD ONLY)

BUSHING, BRONZE 5/8" I.D.

(STANDARD ONLY)

BRACKET, DRIVE SUPPORT

(STANDARD ONLY)

- - - - >

43275

22229-0003

< - - - -

49972

22034-0003

< - - - -

SPLIT IDLER SHAFT - MAIN

SPLIT IDLER SHAFT - SLEEVE

FLAT WASHER, BRONZE

FLANGE BEARING (HIGH SPEED

ONLY)

- - - - >

45377

< - - - -

10 2

(INC. ITEMS 13-19)

- - - - >

49968

21415-0001

< - - - -

11 1 48746 48784 48795 FRAME, IDLER SIDE

12 1 48769 50035 48769 ASSEMBLY, SPLIT IDLER SHAFT

13 1

14 1 < - - - - 48778

< - - - -

15 1

SPROCKET, CONV. BELT

BUSHING, BRONZE 5/8" I.D.

- - - - >

22229-0003

22034-0003

< - - - -

16 4

17 2

BRACKET, IDLER SUPPORT

- - - - >

35900-0020

< - - - -

19 2

18 2 37000-0413 50033 37000-0413 BRACKET, IDLER ADJUSTMT.

20 2 35000-1008 50028 35000-1008 SCREW, IDLER ADJUSTMENT

PIVOT PLATE

LOCKNUT, HEX 3/8"-16 SS

- - - - >

48755

21176-0002

< - - - -

21 2

22 4

ESPAÑOL

página 85

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

NOTES

ESPAÑOL

página 85

SECTION 6 - ELECTRICAL WIRING DIAGRAMS

Fig. 6-1 - Wiring diagram, PS536GS Gas Oven

208/240V, 50/60 Hz, 1 Ph

page 1

ENGLISH

seite 29

DEUTSCH

page 57

FRANÇAIS

página 85

ESPAÑOL

IMPORTANT

An electrical wiring diagram for the oven is also located inside the machinery compartment.

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

Fig. 6-2 - Wiring diagram, PS536GS Gas Oven

208/240V, 50/60 Hz, 1 Ph

ESPAÑOL

página 85

Fig. 6-3 - Wiring diagram, PS536GS Gas Oven

208/240V, 50/60 Hz, 1 Ph

SECTION 6 - ELECTRICAL WIRING DIAGRAMS

page 1

ENGLISH

seite 29

DEUTSCH

page 57

FRANÇAIS

página 85

ESPAÑOL

ENGLISH

page 1

DEUTSCH

seite 29

FRANÇAIS

page 57

NOTES

ESPAÑOL

página 85

NOTES

page 1

ENGLISH

seite 29

DEUTSCH

page 57

FRANÇAIS

página 85

ESPAÑOL

WARNING

Improper installation, adjustment, alteration, service or maintenance

can cause property damage, injury or death. Read the installation,

operating and maintenance instructions thoroughly before

installing or servicing this equipment.

NOTICE

During the warranty period, ALL parts replacement and servicing should be performed by

your Middleby Marshall Authorized Service Agent. Service that is performed by parties

other than your Middleby Marshall Authorized Service Agent may void your warranty.

NOTICE

Using any parts other than genuine Middleby Marshall factory manufactured parts relieves

the manufacturer of all warranty and liability.

NOTICE

Middleby Marshall reserves the right to change specifications at any time.

Middleby is proud to support the Commercial Food Equipment Service Association (CFESA). We recognize and applaud CFESA's ongoing efforts to improve the quality of technical service in the industry.

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406

24-Hour Service Hotline: 1-(800)-238-8444

www.middleby.com

Middleby Marshall PS53GS User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual