Middleby Marshall PS500 User Manual

PS555E, PS555G, PS570G
Gas and Electric (Europe)
ENGLISH/German/
French/Spanish

P/N 47008

Rev. B  V1  11/01

page 1

ENGLISH

seite 29

DEUTSCH

PS500 Series Gas and Electric Ovens

Models:

 PS555E Electric
 PS555G Gas
 PS570G Gas

Combinations:

 Single Oven
 Double Oven (Two-Stack)
 Triple Oven (Three-Stack)
 Quad Oven (Four-Stack)

OWNER'S OPERATING AND
INSTALLATION MANUAL

Single Oven Double Oven Triple Oven Quad Oven

PS555E/G PS570G PS555E/G PS570G PS555E/G PS570G PS555E/G PS570G

Rated Heat Input 44kW 50kW 2x44kW 2x50kW 3x44kW 3x50kW 4x44kW 4x50kW
Gas Ovens

Rated Heat Input 32kW -- 2x32kW -- 3x32kW -- 4x32kW --
Electric Ovens

Heating Zones 1 controlled 2 controlled 3 controlled 4 controlled

heat zone heat zones heat zones heat zones

page 57

FRANÇAIS

página 85

ESPAÑOL

© 2001 Middleby Marshall, Inc.

is a registered trademark of Middleby Marshall, Inc. All rights reserved.

Middleby Cooking Systems Group  1400 Toastmaster Drive  Elgin, IL 60120  USA  [phone]  FAX [phone]

1

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.

ENGLISH

Gas ovens are designed for use with EITHER natural gas OR liquid propane gas, as specified on the serial plate.
Where permitted by local and national codes, the oven can be converted from natural gas to propane operation,
or from propane to natural gas operation. This conversion is described in the Installation section of this Manual.
The conversion requires the installation of the appropriate Middleby Marshall Gas Conversion Kit.

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

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  [phone]  FAX [phone]

24-Hour Service Hotline: [phone]

www.middleby.com

2

TABLE OF CONTENTS

page page

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

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

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

A. Conveyor Drive Motor ....................................... 4

B. Crumb Pans ..................................................... 4

C. Conveyor End Stop ........................................... 4

D. Conveyor Rear Stop ......................................... 4

E. Conveyor ........................................................... 4

F. End Plugs ......................................................... 4

G. Eyebrows .......................................................... 4

H. Window ............................................................. 4

I. Serial Plate ....................................................... 4

J. Machinery Compartment Access Panel .......... 4

K. Control Panel .................................................... 4

L. Gas Burner or Heating Elements .................... 4

M. Blowers ............................................................. 4

N. Air Fingers ........................................................ 4

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

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

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

C. Electrical Specifications for Electric Ovens ..... 4

D. Electrical Specifications for Gas Ovens .......... 5

E. Gas Orifice and Pressure Specifications ........ 5

SECTION 2 - INSTALLATION .................................................. 5

I. BASE PAD KIT.......................................................... 6

II. INSTALLATION KIT .................................................. 7

III. VENTILATION SYSTEM ........................................... 7

A. Requirements .................................................. 7

B. Recommendations .......................................... 7

C. Other Ventilation Concerns .............................. 7

IV. ASSEMBLY ............................................................... 8

A. Base Pad, Legs, Casters, and Stacking ......... 8

B. Restraint Cable Installation ............................. 8

C. Conveyor Installation ........................................ 8

V. FINAL ASSEMBLY ................................................... 10

VI. ELECTRICAL SUPPLY ........................................... 10

VII. GAS SUPPLY .......................................................... 11

A. Connection ...................................................... 11

B. Preparation for Use with Various Gases ....... 12

C. Replacing the Gas Orifices .............................12

D. Checking the Gas Supply (Inlet) Pressure .... 13

E. Adjusting the Orifice (Manifold) Pressure

and Heat Input ................................................. 13

SECTION 3 - OPERATION ..................................................... 14

I. LOCATION AND DESCRIPTION OF CONTROLS .14

A. "BLOWER" (

B. "HEAT" (

C. "CONVEYOR" (

D. "RESET" (

E. Conveyor Speed Controller .............................14

F. Digital Temperature Controller....................... 14

G. Machinery Cpt. Access Panel Safety Switch .. 14

II. NORMAL OPERATION, STEP-BY-STEP ................15

A. Daily Startup Procedures ................................ 15

B. Daily Shutdown Procedures ........................... 15

III. QUICK REFERENCE: DIGITAL TEMP CONTROL. 16

IV. QUICK REFERENCE: TROUBLESHOOTING .......17

SECTION 4 - MAINTENANCE ................................................. 18

I. MAINTENANCE - DAILY.......................................... 18

II. MAINTENANCE - MONTHLY ..................................19

III. MAINTENANCE - EVERY 3 MONTHS ....................20

IV. MAINTENANCE - EVERY 6 MONTHS ....................21

V. KEY SPARE PARTS KIT ......................................... 22

SECTION 5 - ELECTRICAL WIRING DIAGRAMS ................... 23

I. SCHEMATIC, PS555G OR PS570G GAS

OVEN, 230V, 50 Hz, 1 Ph........................................ 23

II. WIRING DIAGRAM, PS555G OR PS570G

GAS OVEN WITH TYPE 1 GAS VALVE,

230V, 50 Hz, 1 Ph ................................................... 24

III. WIRING DIAGRAM, PS555G OR PS570G

GAS OVEN WITH TYPE 2 GAS VALVE,

230V, 50 Hz, 1 Ph ................................................... 25

IV. SCHEMATIC, PS555E ELECTRIC OVEN,

380V, 50 Hz, 3 Ph ................................................... 26

V. WIRING DIAGRAM, PS555E ELECTRIC

3

OVEN, 380V, 50 Hz, 3 Ph........................................ 27

) Switch ................................... 14

) Switch .........................................14

) Switch ............................ 14

) Switch....................................... 14

ENGLISH

SECTION 1 - DESCRIPTION

I. OVEN USES

PS500 Series Ovens can be used to bake and/or cook a

ENGLISH

wide variety of food products, such as pizza, pizza-type
products, cookies, sandwiches and others.

K. Control Panel: Location of the operating controls for the

oven. Refer to Section 3,

Operation, for details.

Not Shown:

L. Gas Burner (gas ovens) or Heating Elements (electric

ovens): Heat air, which is then projected to the air fingers

II. OVEN COMPONENTS - see Figure 1-1.

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

through the conveyor belt. One crumb pan is located at

by the blowers.

M. Blowers: Project hot air from the burner or heating ele-

ments to the air fingers.

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

each end of the conveyor.

C,D. Conveyor End Stop and Rear Stop: Prevents food products

from falling off the end or rear of the moving conveyor.

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

Figure 1-1 - Oven Components

G

F

F. End Plugs: Allow access to the oven's interior.
G. Eyebrows: Can be adjusted to various heights to prevent

heat loss into the environment.

H

H. Window: Allows the user to access food products inside

the baking chamber.

I. Machinery Compartment Access Panel: Allows access

to the oven's interior and control components. No user­servicable parts are located in the machinery compart­ment.

I

J

B

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

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

Installation,

K

A

III. OVEN SPECIFICATIONS

Table 1-1: Dimensions PS555E/G PS570G PS555E/G PS570G PS555E/G PS570G PS555E/G PS570G

Overall Height (inc. top and legs, as appropriate)

Overall Depth (inc. rear shrouds) 1.61m 1.61m 1.61m 1.61m
Overall Length 2.31m 2.69m 2.31m 2.69m 2.31m 2.69m 2.31m 2.69m
Conveyor Width 0.81m 0.81m 0.81m 0.81m

Recommended Minimum Clearances

Rear of Oven (inc. rear shrouds) to Wall
Conveyor Extension to Wall (both ends)

Single Oven Double Oven Triple Oven Quad Oven

1.17m 1.53m 1.59m 1.98m

or 2x0.38m or 2x0.38m or 2x0.38m or 2x0.38m

0 mm 0 mm 0 mm 0 mm
0 mm 0 mm 0 mm 0 mm

D

C

E

Table 1-2: General Specifications (per oven cavity) PS555E/G PS570G

Weight 533kg 590kg
Shipping Weight 568kg 624kg
Shipping Cube 4.53m
Rated Heat Input - Gas Ovens 44 kW, 37,800 kcal 50 kW, 42,840 kcal
Rated Heat Input - Electric Ovens 32kW -­Maximum Operating Temperature < - - - - - - - - - - - - 288°C - - - - - - - - - - - - >
Air Blowers Two blowers at 39.6m3/min. at 2050 RPM, 10mm Water Static Pressure
Average Air Jet Velocity < - - - - - - - 13.20m/sec. average - - - - - - - >
Warmup Time < - - - - - - - - - - - - 15 min. - - - - - - - - - - - - >

3

4.53m

3

Table 1-3: Electrical specifications for PS555E electric ovens (per oven cavity)

Main Blower Control Circuit Phase Freq Current draw (avg.) * Poles Wires

Voltage Voltage L1 L2 L3 N

380V

120V conveyor speed controller

(w/transformer);

all other control circuits 230V

3 Ph 50Hz 48.6A 48.6A 57.8A 9.2A 4 Pole 5 Wire

(3 hot, 1 neutral,

1 ground)

* CAUTION: The current draw shown in the chart above is an average value for normal operation. The initial amperage draw

on oven startup may exceed the listed value.

4

Table 1-4: Electrical specifications for PS555G and PS570G gas ovens (per oven cavity)

Main Blower Control Circuit Phase Freq Electrical system Current draw (avg.) * Poles Wires

Voltage Voltage kW rating

230V

120V conveyor speed controller

(w/transformer);

all other control circuits 230V

1 Ph 50Hz 2.3kW 10A * 2 Pole 3 Wire

(2 hot, 1 gnd)

* CAUTION: The current draw shown in the chart above is an average value for normal operation. The initial amperage draw

on oven startup may exceed the listed value.

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

Supply (inlet) Pressure (mbar)

Main Pilot

Orifice Orifice

Gas Type dia. dia. II

PS555G Natural, G20 5.79mm 0.635mm 20 20 -- 20-25 20 9.0 mbar 44kw

Natural, G25 5.79mm 0.635mm -- 20 25 - - - - 12.0 mbar 44kw
Natural, G20, G25 5.79mm 0.635mm 20 20 25 20-25 20 9.0 mbar 44kw
Liquid, G30 3.33mm 0.381mm 29-37 - - 28-30 29-37 50 23.9 mbar 44kw
Liquid, G30, G31 3.33mm 0.381mm -- 50 30 - - 50 23.9 mbar 44kw

PS570G Natural, G20 6.35mm 0.635mm 20 20 -- 20-25 20 9.0 mbar 50kw

Natural, G25 6.35mm 0.635mm -- 20 25 - - - - 12.0 mbar 50kw
Natural, G20, G25 6.35mm 0.635mm 20 20 25 20-25 20 9.0 mbar 50kw
Liquid, G30 3.53mm 0.381mm 29-37 - - 28-30 29-37 50 23.9 mbar 50kw
Liquid, G30, G31 3.53mm 0.381mm -- 50 30 - - 50 23.9 mbar 50kw

IE,IT,PT, AT,CH,DK,

ES,GB DE NL BE,FR FI,SE

2H3+

II

2ELL3B/P

II

2L3B/P

II

2E+3+

II

2H3B/P

Orifice Rated

(manifold) Heat

pressure Input

ENGLISH

SECTION 2 - INSTALLATION

WARNING - After any conversions, readjustments, or service work on the oven:

 Perform a gas leak test.
 Test for correct air supply, particularly to the burner blower.
 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

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 Description section of this Manual.

WARNING

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

installed shall not affect the air supply to the oven.

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 supercede the require-

ments and guidelines provided in this manual.

5

SECTION 2 - INSTALLATION

ENGLISH

Fig. 2-1 - Base Pad Kit

1

8

2

7

6

4a

11

3

4b

10

13

12

9

5b

5a

4c

I. BASE PAD KIT - see Figure 2-1

NOTE: One Base Pad Kit is required for each Single, Double, Triple, or Quad Oven installation.

Quantity

Single oven Double oven Double oven Triple oven Triple oven Quad oven

Item extensions extensions extensions extensions extensions outriggers Part No. Description

1a 4 -- -- -- -- -- 37210-0060 Leg extension, 0.48m
1b -- 4 -- -- -- -- 37210-0082 Leg extension, 0.25m
1c -- -- 4 -- -- -- 37210-0057 Leg extension, 0.38m
1d -- -- -- 4 -- -- 39684 Leg extension, 0.10m

4a 4 4 4 4 4 -- 37115-0102 Caster, swivel (with stud)
4b -- -- -- -- -- 2 45357 Caster, swivel (with flat plate)
4c -- -- -- -- -- 2 45664 Caster, swivel (with flat plate and brake)
5a 4 4 4 4 4 -- 22450-0028 Adjustable foot, standard
5b -- -- -- -- -- 4 45206 Adjustable foot, quad ovens

with 0.48m with 0.25m with 0.38m with 0.10m without leg with

2 -- -- -- -- -- 4 45209 Outrigger
3 -- -- -- -- -- 4 45205 Spacer, caster - for use with outrigger only

611111122450-0253 Restraint cable, 1.5m
711111121392-0005 Eye bolt/lag screw
8111111 41643 Base pad

-- 2 2 2 2 2 2 41582 Top cover (right or left)

-- 8 8 8 8 8 8 21256-0069 Screw, sl trus hd #10-32 X 1-1/4

-- 16 16 16 16 -- 8 21216-0018 Bolt, hex cap 1/2"-13 X 1-1/4

-- 16 16 16 16 -- 8 21416-0003 Flat washer, 1/2

-- 16 16 16 16 -- 8 21426-0004 Lock washer, 1/2

-- -- -- -- -- -- 16 A27727 Bolt, hex cap 3/8"-16 X 1

-- -- -- -- -- -- 32 A21924 Flat washer, 3/8

-- -- -- -- -- -- 16 21172-0004 Lock nut, hex, 3/8"-16

ADDITIONAL COMPONENTS FOR GAS OVENS:

911111133120-0056 Gas pipe, 1-1/4 dia. X 54 (1.4m) L
1022222227271-0004 Pipe clamp, 1-1/2
1122222233120-0055 Pipe nipple, 1-14 dia. X 3 (76mm) L, NPT
1222222223122-0007 Elbow, 90°, 1-1/4 dia.
1311111122361-0003 Gas hose, 1-1/4 dia. X 72 (1.8m) L

--22222221292-0001 Screw, hex wshr hd #10-16 X 3/4

6

II. INSTALLATION KIT - see Figure 2-2

NOTE: One Installation Kit is required for each oven cavity.

SECTION 2 - INSTALLATION

Fig. 2-2 - Installation Kit

15

2

Item Qty. Part No. Description

1 1 35900-0148 Conveyor Rear Stop
2 1 35000-1103 Conveyor End Stop
3 1 47008 Owner's Operating & Installation Manual
4 1 1002040 Authorized Service Agency Listing

ADDITIONAL COMPONENTS FOR PS555G AND PS570G GAS OVENS:

5 1 33120-0053 Gas Pipe Nipple

III. VENTILATION SYSTEM

CODES SUPERSEDE THE RECOMMENDATIONS SHOWN IN
THIS MANUAL.

IMPORTANT

Where national or local codes require the

installation of fire suppression equipment 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

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

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.

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
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

B. Recommendations

NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2­3 ARE

RECOMMENDATIONS ONLY. LOCAL, NATIONAL, AND

 Inadequate ventilation can inhibit oven performance.

 It is recommended that the ventilation system and duct
INTERNATIONAL CODES MUST BE FOLLOWED WHEN
INSTALLING THE VENTILATION SYSTEM. ANY APPLICABLE

43

ENGLISH

must not

services of a ventilation engineer or specialist.

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

458mm minimum

(Typical - both
ends of oven)

Fig. 2-3 - Ventilation System

51mm

minimum

7

203mm

minimum

76mm

minimum

SECTION 2 - INSTALLATION

IV. ASSEMBLY

A. Base Pad, Legs, Casters, and Stacking
NOTE: Optional Stacking Lift Kit (P/N 30580)

The Stacking Lift Kit, P/N 30580, is available separately. This
Kit provides a complete lift adapter set, specifically designed for

ENGLISH

stacking PS500 Series oven cavities. The Kit includes an
instructional videotape.

1. Install the top panels in place on the top oven cavity. Follow
the instructions provided with the top panels.

2a. Legs/Casters Installation (Standard) - Single Ovens, Double

Ovens, and Triple Ovens with Leg Extensions

 Install one leg extension to each corner of the base pad

using the supplied 1/2"-13x1-1/4" bolts, 1/2" flat
washers, and 1/2" lockwashers. See Figure 2-4.

 Install one adjustable foot and one caster into the

holes on the bottom of the leg extension. The adjustable
foot should be installed into the OUTSIDE hole (closest
to the front or rear face of the oven). The caster should
be installed into the INSIDE hole.

2b. Legs/Casters Installation - Triple Ovens Without Leg

Extensions

Install one adjustable foot and one caster into the 3/4"
holes on the bottom of the base pad. The adjustable foot
should be installed into the OUTSIDE hole (closest to the
front or rear face of the oven). The caster should be installed
into the INSIDE hole. See Figure 2-5.

2c. Legs/Casters Installation - Quad Ovens

 Install one outrigger to each corner of the base pad

using the supplied 1/2"-13x1-1/4" bolts, 1/2" flat
washers, and 1/2" lockwashers. See Figure 2-6.

 Install the spacer plates and casters onto the outriggers

using the 3/8"-16x1" screws, 3/8" flat washers, and
3/8"-16 hex nuts supplied in the Installation Kit. The
two locking casters should be installed on the front
side of the oven.

 Install the adjustable feet into the holes on the

underside of the outrigger assembly.

3. Install the base pad onto the lower oven cavity. Check that
the eyebolt welded onto the pad faces the rear of the oven.

4. Stack the oven cavities. If necessary, refer to the instructional
videotape provided with the Stacking Lift Kit (P/N 30580).

B. Restraint Cable Installation

Because the oven is 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 the rear surface of the oven's base
pad, while the other is anchored to the wall. See Figure 2-7.

After connecting the restraint cable, move the oven to its final
location. Adjust the bottom (hex) sections of the feet so that the
casters are off the floor. For quad ovens, lock the two front
casters.

C. Conveyor Installation
NOTE

Split belt conveyors can only be installed from the end of the

with the drive motor.

oven
Single-belt conveyor assemblies may be inserted into either

end of the oven. If it is to be installed from the end of the oven
without the drive motor, the drive sprocket assembly must be
removed.

Front or Rear

of oven

1/2"

flat washer

1/2"
lock

washer

1/2"-13 x 1-1/4"

hex screw

Front or Rear

of oven

Front or Rear

of oven

Locking casters:

FRONT of oven

Non-locking

casters:

REAR of oven

1/2"-13 x 1-1/4"

8

Figure 2-4 - Legs and Casters - Standard

Left or Right Side

Caster

Foot uses OUTSIDE
hole (closest to front

or rear of oven)

uses

INSIDE

hole

Figure 2-5 - Legs and Casters for Triple Oven

Without Leg Extensions

Left or Right Side

Foot uses OUTSIDE

hole (closest to front

or rear of oven)

Caster

uses

INSIDE

hole

Figure 2-6 - Legs and Casters for Quad Oven

Left or Right Side

3/8"-16 x 1"

Outrigger

Spacer

1/2" flat

washer

1/2" lock

washer

hex screw

Adjustable

foot

plate

Locking

3/8" flat

washer

3/8"-16

hex lock nut

of oven

of oven

of oven

hex screw

3/8" flat

washer

caster
shown

To remove the drive sprocket (if necessary), loosen the set
screw on the conveyor collar as shown in Figure 2-8. Then, pull
the sprocket assembly straight out.

1. Lift the conveyor and position it in the oven as shown in
Figure 2-9.

2. Continue moving the conveyor into the oven until the frame
protrudes equally from each end of the oven (about 0.46m).

3. Check that the retainers located on the underside of the
conveyor frame rest firmly against the lower end plugs, as
shown in Figure 2-9.

4. When the conveyor is positioned properly, check for free­dom of movement of the conveyor belt by pulling it for about

0.75-1.00m with your fingers. The conveyor

must move

freely.

5. If the drive sprocket was removed when installing the
conveyor, replace it at this time.

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 drive motor cover.

8. Check the tension of the conveyor belt as shown in Figure
2-10. The belt should lift between 75-100mm. 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 (right) end
of the conveyor. See Figure 2-10.

9. If necessary, links can be added to or removed from the
conveyor belt to achieve the correct deflection of 75-100mm.
If links must be removed from the belt, it can be reattached
to the conveyor as follows:

a. The conveyor belt links must be oriented as shown in

Figure 2-11.
b. The smooth side of the conveyor belt must face UP.
c. Connect the inside master links. Check that the links

are oriented as shown in Figure 2-11.
d. Connect the outside master links. Note that the

outside master links have right and left sides. The

right-side master link has an open hook facing you, as

shown in Figure 2-11.
e. Check for freedom of movement of the conveyor belt by

pulling it for about 0.75-1.00m with your fingers. The

conveyor

must move freely.

f. Return to Step 8, above, to re-check the belt tension.

SECTION 2 - INSTALLATION

Figure 2-7 - Installing the Restraint Cable

Restraint cable

3/4 (19mm)

assembly

eyebolt

Wall of

structure

Eyebolt in

base pad

Rear surface
of oven base

pad

Figure 2-8 - Removing the Conveyor Drive Sprocket

Loosen conveyor collar

set screw, then pull

sprocket straight out

Figure 2-9 - Inserting the Conveyor

1

2

4

Retainer

3

End plug

ENGLISH

Figure 2-10 - Checking the conveyor tension

75-100mm vertical

deflection

Conveyor

tension

adjustment

screws (idler

end only)

Figure 2-11 - Conveyor and Master Link Orientation

Direction
of travel

Outside master link

orientation

9

CORRECT
master link

position

Incorrect

master link

position

Inside master link

orientation