Middleby Marshall Oven PS770G GAS User Manual

PS770 Series

Gas

Domestic

ENGLISH

P/N59026

August 18, 2006

PS770 Series Gas Ovens

Model:

• PS770G Gas

Combinations:

• SingleOven

• DoubleOven(Two-Stack)

• TripleOven(Three-Stack)

OWNER'S OPERATING AND

INSTALLATION MANUAL

for domestic and standard export ovens

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

Download from Www.Somanuals.com. All Manuals Search And Download.

Model No.

Modéle No.

Serial No.

Serié No.

Installation Date

Date d'installation

MIDDLEBY MARSHALL INC.

OVEN LIMITED WARRANTY

(Non U.S.A.)

MIDDLEBY MARSHALL

PAPA JOHN’S No Quibble Limited

Warranty

The Seller warrants equipment manufactured by it to be free from

defects in material and workmanship for which it is responsible. The

Seller’s obligation under this warranty shall be limited to replacing

or repairing, at Seller’s option, without charge, F.O.B. Seller’s

factory, any part found to be defective and any labor and material

expense incurred by Seller in repairing or replacing such part. Such

warranty is limited to a period of one year from date of original

installationor15monthsfromdateofshipmentfromSeller’sfactory,

whichever is earlier, provided that terms of payment have been fully

met. All labor shall be performed during regular working hours.

Overtime premium will be charged to the Buyer.

Middleby Marshall will repair the equipment 24

hours a day, 365 days a year

(U.S.A. Only) PS770 WOW Oven

MIDDLEBYMARSHALL,HEREINAFTERREFERREDTO

AS “THE SELLER”, WARRANTS EQUIPMENT MANU-

FACTUREDBYTHEMTOBEFREEFROMDEFECTSIN

MATERIALANDWORKMANSHIPFORWHICHITISRE-

SPONSIBLE. THE SELLER’S OBLIGATION UNDER

THIS WARRANTY SHALL BE LIMITED TO REPLACING

OR REPAIRING, AT SELLER’S OPTION, WITHOUT

CHARGE, ANY PART FOUND TO BE DEFECTIVE AND

ANYLABORANDMATERIALEXPENSEINCURREDBY

SELLER IN REPAIRING OR REPLACING SUCH PART.

SUCH WARRANTYSHALLBELIMITED TOTHE ORIGI-

NAL PURCHASER ONLY AND SHALL BE EFFECTIVE

FOR A PERIOD OF THREE YEARS FROM DATE OF

ORIGINALINSTALLATIONOR42MONTHSFROMDATE

OFPURCHASE,WHICHEVERISEARLIER,PROVIDED

THATTERMSOFPAYMENTHAVEBEENFULLYMET.

This warranty is not valid unless equipment is installed,

started, and demonstrated under the supervision of a fac-

tory-authorized installer.

Normal maintenance functions, including lubrication, adjustment of

airflow, thermostats, door mechanisms, microswitches, burners

and pilot burners, and replacement of light bulbs, fuses and

indicating lights, are not covered by warranty.

Any repairs or replacements of defective parts shall be performed

by Seller’s authorized service personnel. Seller shall not be

responsible for any costs incurred if the work is performed by other

than Seller’s authorized service personnel.

This warranty is valid only if the equipment is installed,

started, and demonstrated under the supervision of a

factory-authorized installer.

When returning any part under warranty, the part must be intact and

complete, without evidence of misuse or abuse, freight prepaid.

Normal maintenance functions, including lubrication,

cleaning, or customer abuse, are not covered by this no

quibble warranty.

Seller shall not be liable for consequential damages of any kind

which occur during the course of installation of equipment, or which

result from the use or misuse by Buyer, its employees or others of

the equipment supplied hereunder, and Buyer’s sole and exclusive

remedy against Seller for any breach of the foregoing warranty or

otherwise shall be for the repair or replacement of the equipment

or parts thereof affected by such breach.

Seller shall be responsible only for repairs or replace-

ments of defective parts performed by seller’s authorized

service personnel. Authorized service agencies are

located in principal cities throughout the contiguous

United States, Alaska, and Hawaii. This warranty is valid

in the 50 United States and is void elsewhere unless the

product is purchased through Middleby International with

warranty included.

The foregoing warranty shall be valid and binding upon Seller if and

only if Buyer loads, operates and maintains the equipment supplied

hereunder in accordance with the instruction manual provided to

Buyer. Seller does not guarantee the process of manufacture by

Buyer or the quality of product to be produced by the equipment

supplied hereunder and Seller shall not be liable for any prospective

or lost profits of Buyer.

The foregoing warranty is exclusive and in lieu of all other

warranties, expressed or implied. There are no implied

warranties of merchantability or of fitness for a particular

purpose.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF

ALL OTHER EXPRESS AND IMPLIED WARRANTIES WHATSO-

EVER. SPECIFICALLY THERE ARE NO IMPLIED WARRANTIES

OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR

PURPOSE.

The foregoing shall be seller’s sole and exclusive obli-

gation and buyer’s sole and exclusive remedy for any

action, including breach of contract or negligence. In no

event shall seller be liable for a sum in excess of the

purchase price of the item. Seller shall not be liable for

any prospective or lost profits of buyer.

The foregoing shall be Seller’s sole and exclusive obligation and

Buyer’s sole and exclusive remedy for any action, whether in

breach of contract or negligence. In no event shall seller be liable

for a sum in excess of the purchase price of the item.

This warranty is effective on Middleby Marshall equip-

ment sold on or after April 1, 2006.

The Middleby Marshall logo is a registered trademark of Middleby Marshall, A Middleby Company.

Middleby Marshall Inc. • 1400Toastmaster Drive • Elgin, Illinois 60120-9272 U.S.A.• (847) 741-3300 • FAX:(847) 741 4406

Download from Www.Somanuals.com. All Manuals Search And Download.

Table of Contents

Page

SECTION 1

IV. ASSEMBLY .................................................................... 10

A. Base Pad, Legs, Casters, and Stacking ................ 10

B. Restraint Cable Installation .................................... 10

C. Conveyor Installation .............................................. 10

D. Standoff Installation ............................................... 11

V. FINAL ASSEMBLY....................................................... 12

VI. ELECTRICAL SUPPLY ............................................... 12

Connection .................................................................. 13

VII. GAS SUPPLY ............................................................. 13

A. Gas Utility Rough-In Recommendations ............... 13

B. Connection ............................................................... 14

C. Gas Conversion....................................................... 14

D. Propane Conversion ............................................... 14

DESCRIPTION .................................................................... 6

I. OVEN USES .................................................................... 6

II. OVEN COMPONENTS .................................................... 6

A. Conveyor Motor Drive .............................................. 6

B. Crumb Pans ............................................................... 6

C. Conveyor End Stop and Rear Stop .......................... 6

D. Conveyor End Stop and Rear Stop .......................... 6

E. Conveyor .................................................................... 6

F. EndPlugs .................................................................... 6

G. Eyebrows ................................................................... 6

H.Window ....................................................................... 6

I. Machinery Compartment Access Panel ................... 6

J. Serial Plate ................................................................. 6

K. Control Panel ............................................................. 6

L. Gas Burner ................................................................. 6

M. Blowers ...................................................................... 6

N. Air Fingers ................................................................. 6

SECTION 3

OPERATION ........................................................................ 15

I. LOCATION AND DESCRIPTION OF CONTROLS ....... 15

II. NORMAL OPERATION, STEP-BY-STEP ..................... 16

A. Daily Startup Procedure ......................................... 16

B. Daily Shutdown Procedure ..................................... 16

III. ENERGY MODE ........................................................... 17

IV. SCREEN ALERTS....................................................... 17

III. OVENSPECIFICATIONS ................................................. 6

A. Dimensions ................................................................ 6

B. General Specifications ............................................. 6

C. Electrical Specifications for PS770 Gas Ovens ..... 7

SECTION 4

D. Gas Orifice and Pressure Specifications

for PS770 Gas Ovens .............................................. 7

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 2

INSTALLATION .................................................................. 7

I. BASE PAD KIT ............................................................... 8

II. INSTALLATIONKIT ........................................................ 9

III.VENTILATIONSYSTEM ................................................. 9

A. Requirements ............................................................ 9

B. Recommendations .................................................... 9

C. Other Ventilation Concerns ...................................... 9

SECTION 5

ELECTRICAL WIRING DIAGRAM ...................................... 23

I. WIRING DIAGRAM, 770 GAS OVEN, 208/240V,

50/60 Hz, 1 Ph ............................................................... 23

Download from Www.Somanuals.com. All Manuals Search And Download.

ITEM QTY

P/N

DESCRIPTION

55028

55027

59026

STOP,BACKSIDECONVEXT

STOP,SIDEENDCONVEXT

OWNER'SOPERATING&

INSTALLATION MANUAL

42612

33120-0056

22450-0130

59155

KIT,SUPPLEMENTSVCAGENCYLIST

PIPE,BLK 1-1/4" X 54"

BAG,POLY4MIL9"X12"W/MINI-GRIP

BUSHING,HEYCOSB1500-18

Reflector

59099

59098

Bracket, Reflector

59226

WLDMT, Bracket Reflector

Spacer, 1.5" Dia X 1.125" H

SCR, MS HH 10-32 X 1-1/4 18-8

48522

19A15144

Download from Www.Somanuals.com. All Manuals Search And Download.

D. STANDOFF INSTALLATION

1 Place screw, P/N 19A15144, through counter-bored hole in

standoff, P/N 48522, and screw into weld nut on rear shroud.

2. Repeat procedure for both sides.

Download from Www.Somanuals.com. All Manuals Search And Download.

Mount the new reflector bracket to the provided holes on the

front right-hand side of the oven. The reflector should be

positioned just above the conveyor belt.

Using an assistant, hold both back cover switches in the

closed position. This will allow power to the photo-eye, and

it will provide a red beam for aiming. Loosen one of the screws

holding the photo detector gimbal tight, allowing it to be

reaimed at the reflector. The beam should hit exactly in the

center of the reflector, then tighten the screw back down.

Note: This is MUCH easier in reduced light.

Replace all covers.

ATTACHING THE POINT OF SALE CABLE

Remove the cable (P/N 59198) from the Kit. Attach the 90

degree plug to the rear of the touchscreen display and route

the serial connector out the grommetted bottom hole and

along the gas pipe. Connect the serial connector with the

cable supplied by the customer.

CONVEYOR BELT REVERSAL

Conveyor belt reversal consists of three steps:

1. Physically reversing the conveyor belt

2. Resetting direction jumper on the conveyor control board.

3. Switching the photo detector.

REVERSING THE CONVEYOR BELT

Remove the conveyor from the oven and find the master link

location. Remove master links and remove the belt from the

conveyor frame. Reassemble the belt back onto the frame (in

the reverse direction) and reinstall the master links. Replace

the conveyor assembly in the oven.

RESETTING DIRECTION JUMPER

LocateJumperP1ontheconveyorcontrolboard. Movejumper

from terminals 1 and 2, and replace onto terminals 2 and 3.

SWITCHING PHOTO DETECTOR

Incoming electrical power lines are fed through the strain-

relief fitting, shown in Figure 2-12. The electrical supply

connections are made inside the electrical junction box. The

power lines then connect to the oven circuits through safety

switches located inside the machinery compartment and

each blower motor compartment. These switches interrupt

electrical power to the oven when the Machinery Compart-

ment Access Panel is opened, OR when either of the blower

or rear shrouds is removed.

Removebothrearfanbeltcovers, thenremovethemotorcover

assembly from both sides of the oven. The photo eye is located

on the front side of the left motor bracket. Disconnect the three

connecting wires, noting which color wires assemble to the

associated wires on the photo-detector. Remove the entire

photo detector bracket. Replace the assembly to the right-

hand side of the unit, mirroring the way it was assembled on

the left. Reconnect the detector wiring in the same order it was

on the left.

Download from Www.Somanuals.com. All Manuals Search And Download.

Connection

Refer to the wiring diagram inside the machinery compart-

ment of the oven to determine the correct connections for the

electrical supply lines. Connect the supply as indicated on the

wiring diagram.

CAUTION

The terms of the oven's warranty require all start-ups, conver-

sions and service work to be performed by a Middleby Marshall

Authorized Service Agent.

Download from Www.Somanuals.com. All Manuals Search And Download.

D. PS770 Propane conversion

Four items have to be changed, to change the oven to LP:

1. Adjust internal burner air shutters.

2. Replace main Orifices

3. Replace (and adjust) the spring in the main valve (see LP kit)

4. Adjust modulating valve bypass settings.

Disconnect the manifold unions closest to the main burner,

and remove the manifold assemblies (four screws each).

Remove the addition four screws holding the burner cores and

slide out each burner core (leaving the ignition and sense

wires connected). Adjust the internal air shutters fully open,

and replace the cores.

Replace the main orifices on the manifold assemblies with the

LP units, and replace the manifold assemblies. Reconnect the

unions. Replace the valve spring with the LP spring, and adjust

the downstream pressure to get 7″ WC.

Adjust the bypass screws in the side of each modulating valve

toapproximately1/6turnfromfullyclosed.Ifthissettingistoolow,

the burners will shut off when trying to modulate. If it is too open,

the unit will tend to gradually raise up in temperature at standby.

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, because a the oven is

equipped with casters, the gas line connection shall be made

with a connector that complies with the Standard for Connec-

tors for Movable Gas Appliances, ANSI Z21.69 (in U.S.A.), as

well as a quick-disconnect device that complies with the

Standard for Quick-Disconnect Devices for Use With Gas Fuel,

ANSI Z21.41 (in U.S.A.).

Figure 2-14 - Gas Burner/Blower Motor and Piping Assembly

Burner/BlowerMotor

GasBurner

Download from Www.Somanuals.com. All Manuals Search And Download.

SECTION3-OPERATION

C. Temperature Control/Display

D. Message Bar

E. Energy Level

Indicators

E. Energy Level

Indicators

B. Conveyor Time Setting

A. Main On/Off Button

I. LOCATION AND DESCRIPTION OF CONTROLS

A. Main On/Off Button

C. Temperature Control/Display

Turnsallovenfunctionsonoroff.Iftheovenisbelowtheset

point, it will rise to the set point and turn the conveyor on.

Ifitisturnedoffandtheovenisabove200°F, theblowers

will remain on until the oven drops below 200° F.

Displays the average set point of both right and left sides

of the oven. Pressing on the display allows individual

temperature displays and adjustments.

D. Message Bar

B. Conveyor Time Setting

Displaysmessagesduringovenoperation.

E. Energy Level Indicators

Adjusts and displays the conveyor bake time. Dual belt

ovens have two displays, single units have one.

Displays energy usage on left and right sides of the oven.

Download from Www.Somanuals.com. All Manuals Search And Download.

II. NORMAL OPERATION - STEP-BY-STEP-

2. Left actual temperature - Indicates current average

A. Daily Startup Procedure

temperature of the left side of the oven.

1. Check that the circuit breaker/fused disconnect is in

theOnposition.Checkthatthewindowisclosed.The

touch panel display should be lit.

NOTE: Right to Left temperature settings should not

exceed a differential of 20 °F.

3. Right Set point temperature - Pressing on this value

allowstheusertoadjustthesetpointfortherightside

oftheoven.

2. Adjust the conveyor to the desired bake time.

3. Press the temperature button to display right and left

hand oven settings. Set temperatures as desired.

4. Left Set point temperature - Pressing on this value

allows the user to adjust the set point for the left side

oftheoven.

4. PresstheONbuttontoactivatetheoven.Theconveyor

willnotrun,untiltheoventemperaturehasreachedthe

set points.

5. Exit - Returns to the main screen.

B. Daily Shutdown Procedure

1. Makecertaintherearenoproductsleftontheconveyor

in the oven.

C. Energy Modes

Energy Mode One - This mode is automatic, and starts

(baketime+1minute)afterthelastproducthasenteredthe

oven.Inthismode,themainovenblowerswilllowerto1500

RPM, while the oven maintains temperature and belt

speed.

2. Press the ON square to turn the oven off.

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

4. Aftertheovenhascooledandtheblowershaveturnedoff,

the circuit breaker/fused disconnect may be turned off.

Quick Reference – Touch Screen Controller

A. Main Screen

Energy Mode Two - The oven lowers its set point by 100°

F, and stops the belt. Anytime that the oven is more than

10 degrees over its set point, the burners will completely

shut off, allowing the oven to cool and the burners are on

minimum flow. The main blowers will continue to run at

1500 RPM in this mode. Placing any article on the input

beltwillcausenormaloperationoftheoventoresume,and

bring the set point back to its original level. The belt will

resume operation once both sides of the oven are within

5° F of the set point.

1. On/Off button - Used to turn oven On and Off.

2. Conveyor speed - Pressing on either the minutes or

secondsallowsanewvaluetobeinputfortheconveyor

speed.Splitbeltovenshavetwoinputs(frontandrear

belts).

3. Oven temperature - Pressing on the set temperature

shifts the user to the oven temperature set point/

indicatorscreen.

EnergyModeThree-Theovenwillturnoffcompletelyand

shutoffthecirculationblowersoncetheoventemperature

hasdroppedbelow200°F.Placinganyarticleontheinput

beltwillcausenormaloperationoftheoventoresume,and

bring the set point back to its original level. The belt will

resume operation once both sides of the over are within

5° F of the set point.

4. Energylevelindicators-Indicatorstoeithersideofthe

screen indicate the energy input to that side of the

oven.

5. Messagebar-Indicatesvariousmessagespertaining

to current oven conditions.

B. Oven Temperature/Set Point/Indicator Screen

Energy Mode Four - This is a complete oven shut down.

Placing anything on the belt will NOT return the oven to

Operation. The ON button on the main screen has to be

pressed to restart the oven.

1. Right actual temperature - Indicates current average

temperature of the right side of the oven.

Download from Www.Somanuals.com. All Manuals Search And Download.

III. QUICK REFERENCE: TROUBLESHOOTING

SYMPTOM

PROBLEM

SOLUTION

Oven will not

turn On.

No electrical power

•

Check that the circuit breaker/fused disconnect is on. Make

sure the emergenct stop button is on.

Oven will not

heat.

No gas pressure

•

Make sure main gas is on.

Burner did not light

Turn oven off, and restart. If it still does not light, call for

service.

Oven is operating, but

little or no air is coming

from the fingers.

Air fingers may be as-

sembled incorrectly after

cleaning.

•

Turn oven off, and allow to cool. Reassemble fingers

correctly.

Conveyor will not move.

Oven is not up to operating

temperature.

Allow oven to preheat.

Conveyor may be jammed.

Turn oven off, and allow to cool. Check conveyor for block-

age.

SCREEN ALERTS

SYMPTOM

PROBLEM

SOLUTION

Battery Symbol in the

lower right hand corner

The internal battery needs

to be replaced to retain

energy mode timings.

•

A qualified service technician should accomplish this.

High Control Compart-

ment Temperature

Clean and replace the

front fan filters.

•

Failure to do this will eventually shut down the oven due to

excessive temperature.

Main Blower problem or

Combustion Blower

problem.

The computer has

detected a problem with

either the main, or burner

blowers.

This should be corrected by a qualified service technician.

Control Over Temp

Front belt jammed

Front filters are clogged

Front belt has stopped

•

Clean or replace filters.

•

Remove obstruction, and restart oven.

If no obstruction, call service.

Rear Belt jammed

High Temp Error

Rear belt has stopped

•

Remove obstruction, and restart oven.

If no obstruction, call service.

Thermocouple or

PLC malfunction

•

Call service

Belt off-Oven not

in temperature

Normal operation until

Oven reaches operating

temperature

Energy Saving Mode 1

Energy saving mode 2

Normal operation

Normal Operation

Energy saving Mode 3

Normal operation

Download from Www.Somanuals.com. All Manuals Search And Download.

E. Blower Belts

1. To gain access to each blower belt compartment remove

the four screws shown in Figure 4-8. Then, lift the rear

shroud off its hangers.

If access to the blower motors is required, remove the

three mounting screws (two on the front of each shroud

and one on the rear). Then, lift the end shroud straight up

and off its hangers.

2. Check each blower belt for cracking or excessive wear.

3. Check for amount of belt deflection in the center of the belt,

1/2″ deflection is acceptable, see Figure 4-9.

4. If necessary, replace belt.

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. For gas ovens, clean and inspect the burner nozzel and

electrode assembly.

C. Check (and clean, if necessary) the oven venting system.

D. Check the conveyor drive shaft bushings and spacers.

Replace the components if they are worn.

Figure 4-9 - Belt Deflection

Download from Www.Somanuals.com. All Manuals Search And Download.

ITEM QTY.

P/N

DESCRIPTION

59080

58678

58679

59169

M9608

59047

M9616

57288

57141

50610

54727

M9887

41647

31651

33983

32108

59082

58668

58669

59112

DIGITALDISPLAY,PROGRAMMED

MOTOR,CONVEYORDRIVE

CONVEYORCONTROLBOARD

INVERTER,PROGRAMMED

POWERSUPPLY

KIT,THERMOCOUPLE(5THERMOCOUPLES)

FAN,COOLING

MOTOR,BLOWER

AIRSWITCH BURNER/BLOWER MOTOR

AIRSWITCH MAIN BLOWER

IGNITION MODULE

ASSEMBLY, BURNER BLOWER/MOTOR

VALVE, MODULATING GAS, 1/2"

AMPLIFIER,MODULATINGVALVE

HIGHLIMITCONTROLMODULE,240V

TRANSFORMER,240Vp:24Vs

PLC MODULE,PROGRAMMED

THERMOCOUPLE MODULE

CURRENT MODULE

PHOTOCELL

16, 17, 18

Download from Www.Somanuals.com. All Manuals Search And Download.

Wiring Diagrams (electrical schematics)

Download from Www.Somanuals.com. All Manuals Search And Download.

La Crosse Technology Weather Radio WS 9009U User Manual
Legend Audio Stereo Amplifier ATP 7500 User Manual
Lenovo Computer Hardware 6393 User Manual
Lightolier Stereo System RD Cable User Manual
Lincoln Electric Welder 255XT User Manual
LST Network Card BC06 1 User Manual
Magellan GPS Receiver 350H User Manual
Maytag Refrigerator W10321481A User Manual
Melissa Microwave Oven 6916FDWDE User Manual
Memorex Karaoke Machine MKS2430 User Manual