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Model No. _________________________ Serial No. _________________________ Installation Date____________________ 

 

MIDDLEBY MARSHALL 

NO QUIBBLE LIMITED WARRANTY 

(U.S.A. ONLY) 

MIDDLEBY MARSHALL HEREINAFTER REFERRED TO AS “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, 

ANY PART FOUND TO BE DEFECTIVE AND ANY LABOR AND 

MATERIAL EXPENSE INCURRED BY SELLER IN REPAIRING OR 

REPLACING SUCH PART. SUCH WARRANTY SHALL BE 

LIMITED TO THE ORIGINAL PURCHASER ONLY AND SHALL BE 

EFFECTIVE FOR A PERIOD OF ONE YEAR FROM DATE OF 

ORIGINAL INSTALLATION OR 18 MONTHS FROM DATE OF 

PURCHASE, WHICHEVER IS EARLIER, PROVIDED THAT 

TERMS OF PAYMENT HAVE BEEN FULLY MET. 

This warranty is valid only if the equipment is installed, started, and 

demonstrated under the supervision of a factory-authorized installer. 

Abuse, acts of God, belt jams, cleaning, customer abuse, insufficient 

utilities, lubrication, maintenance, non-oven related issues, 

preventative maintenance, or normal maintenance function 

including adjustment of airflow, burners, conveyor components, 

door mechanisms, microswitches, pilot burners, thermostats, and 

replacement of bushings, light bulbs, fuses, indicating lights,  and 

wear points, are not covered by this 

no quibble warranty

Seller shall be responsible only for repairs or replacements 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 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 shall be the Seller’s sole and exclusive obligation 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 the buyer. 

This warranty is effective on Middleby Marshall equipment sold 

on, or after January 1st, 2007. 

© 2019 - Middleby Marshall, A Middleby Company. 

MIDDLEBY MARSHALL 

OVEN LIMITED WARRANTY 

(Non U.S.A.) 

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 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 the date of original 

installation or 15 months from date of shipment from Seller’s factory, 

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. 

This warranty is not valid unless equipment is installed, 

started, and demonstrated under the supervision of a factory-

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 repair or replacement 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 anyone other than 

the Seller’s authorized service personnel. 

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

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

Seller shall not be liable for any 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, at 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. 

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 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 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. 

THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF 

ALL  OTHER  EXPRESS AND IMPLIED WARRANTIES 

WHATSOEVER.  SPECIFICALLY THERE ARE NO IMPLIED 

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A 

PARTICULAR PURPOSE. 

 

Middleby Cooking Systems Group 

 

1400 Toastmaster Drive 

 

Elgin, IL 60120 

 

(847) 741-3300 

 

FAX (847) 429-7508 

 

Summary of Contents for PS629G Series

Page 1: ...NSTALLATION MANUAL PS629G Series Gas Ovens Model PS629G Combinations Single Oven Double Oven Two Stack Triple Oven Three Stack 2020 Middleby Marshall Inc is a registered trademark of Middleby Marshall...

Page 2: ...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 t...

Page 3: ...ial 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...

Page 4: ...B Blower Switch 25 C Heat Switch 25 D Temperature Controller 25 E Conveyor Switch and Speed Controller 26 III MEASURING CONVEYOR SPEED 27 IV STEP BY STEP OPERATION 28 A Daily Start up Procedure 28 B D...

Page 5: ...e ovens A single PS629G Series Oven Figure 1 is mounted on a base pad with 4 102mm legs Stacked ovens are mounted on a base pad and the lower oven is mounted on a base pad with legs All models are ava...

Page 6: ...ply Breakers Domestic and std export 208 240V 1 50 60 hz 2 0A 2 pole 3 wire As per local codes The current draw ratings shown above are maximum values for normal operation amperage draw will be less t...

Page 7: ...belt is driven by a variable speed electric motor Figure 5 operating through a gear reducer The motor speed is controlled by a digital control The stainless steel wire belt can travel in either direct...

Page 8: ...gas burner is located inside the right control box and is controlled by the temperature controller D Cooling Fan See Figure 6 and Figure 7 The cooling fan is located in the back of the oven The coolin...

Page 9: ...onto the product being baked 2 Inner Plate The perforated Inner Plate is vital in forming the unique air jets It must be assembled into the manifold with its holes aligned with the holes of the outer...

Page 10: ...SECTION 1 DESCRIPTION 10 Blank Plates two sizes and an Air Finger...

Page 11: ...Authorized Service Agent NOTICE There must be adequate clearance between the oven and combustible construction Clearance must also be provided for servicing and for proper operation IMPORTANT An elec...

Page 12: ...e proper number of crates If apparent damage is found make arrangements to file a claim against the carrier Surface Interstate Commerce Regulations U S A require that the claim must be initiated by th...

Page 13: ...OUPLER 10 2 31823 REDUCER 3 4 1 2 11 1 59227 HEAT GUARD See Figure 12 12 4 62207 INSULATION PARTS LIST FOR SERIES PS629G GAS OVEN INSTALLATION KIT Triple Stack Oven ITEM NO QTY PART NO DESCRIPTION 1 2...

Page 14: ...SECTION 2 INSTALLATION 14 The Opening Height is Adjustable from 2 1 4 57mm minimum to 3 3 4 95mm maximum in 1 2 13mm increments Model PS629G Single Oven Dimensions...

Page 15: ...2 INSTALLATION 15 The Opening Height is Adjustable from 2 1 4 57mm minimum to 3 3 4 95mm maximum in 1 2 13mm increments P N 59227 is shown in its correct installed position Model PS629G Double Oven Di...

Page 16: ...NSTALLATION 16 The Opening Height is Adjustable from from 2 1 4 57mm minimum to 3 3 4 95mm maximum in 1 2 13mm increments P N 59227 is shown in its correct installed position Model PS629G Triple Oven...

Page 17: ...SECTION 2 INSTALLATION 17 Model PS629G Dimensions with Optional Legs Casters...

Page 18: ...nce with the National Electrical Code current edition and must be in compliance with local codes SUGGESTED If space permits service should be located near the control console end of the oven s to allo...

Page 19: ...ory authorized installer can perform the initial start up of the oven Check the oven data plate Figure 17 before making any electric supply connections Electric supply connections must agree with data...

Page 20: ...alve regulator during initial turn on of gas it is 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 pre...

Page 21: ...icable 8 If minimum and maximum pressures are set wire the Moduplus in circuit 9 Close pressure tap screw E Adjusting the Minimum Pressure Setting 1 Disconnect pressure feedback connection if applicab...

Page 22: ...priate 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...

Page 23: ...o the OFF O position Remove the manometer and close the inlet tap Compare the measured supply inlet pressure to the nominal pressures shown in Table 1 5 in the Description section of this Manual If th...

Page 24: ...SECTION 2 INSTALLATION 24 NOTES...

Page 25: ...t stay on during baking The main blower will continue to run after the blower switch is turned to the OFF or O position if the temperature inside the oven is over 200 F 93 C To prevent blower motor an...

Page 26: ...for the conveyor motor and under the temperature controller is the conveyor speed controller The digital controller can be adjusted from 1 10 min bake time conveyor speed Refer to Figure 25 Conveyor...

Page 27: ...igital control NOTE In Figures 26 and 27 the oven shown is with the conveyor running right to left WARNING Possibility of injury from rotating parts and electrical shock Never disassemble or clean the...

Page 28: ...ns located at the rear of the oven see Figure 7 in Section 1 are operating when the blower switch is turned ON or I The cooling fans cool the control components and blower motor by blowing air into an...

Page 29: ...ocedure 8 With the HEAT ON LED lit press the Scroll key one time from the Set Point Only display The actual temperature will appear in the lower display 9 Wait while the actual temperature reaches the...

Page 30: ...ate Adjusting for F C Press the Up and Down keys together for 3 seconds The units will switch between Fahrenheit and Celsius B Programming Adjustments Adjusting Power Output Press the Star and Up keys...

Page 31: ...es are in the ON I position Oven will not heat Controls may be set incorrectly If the oven still will not heat turn the HEAT BLOWER and CONVEYOR switches to the OFF O position Wait for AT LEAST FIVE M...

Page 32: ...SECTION 3 OPERATION 32 NOTES...

Page 33: ...OT use a caustic oven cleaner which can damage the bake chamber surfaces NOTICE ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Author...

Page 34: ...nce a month depending on the volume of baking To clean the interior you have to disassemble some parts of the oven NOTICE 1 Do not use excessive water when cleaning or saturation of oven insulation wi...

Page 35: ...entry and exit trays 2 Loosen two wing screws on the upper end plugs and remove the end plugs 3 Remove motor housing guard Figure 32 4 Lift conveyor and remove chain Figure 33 5 Lift other side of con...

Page 36: ...e and the outer plate If a blank or choke plate is used mark that plate also Fingers are marked in the order shown as viewed from the front of the oven The marks for an upper oven should be preceded w...

Page 37: ...4 Gently step on the lip of the finger and pull the outer plate off 5 To remove the inner plate pull the plate out and then up 6 The outer finger plate is stainless and may be cleaned by either soakin...

Page 38: ...ay because of its design 3 Replace each outer plate by placing your hands flat on the top of the plate and pushing down Keep your fingers clear so you won t pinch them 4 Reinstall the air fingers by p...

Page 39: ...SECTION 4 MAINTENANCE 39...

Page 40: ...SECTION 4 MAINTENANCE 40 5 Install fingers and blank plates correctly with edges interlocked and no space between edges Correct Edges Overlap Completely...

Page 41: ...ber opening The belt should not lift higher than 1 to 2 inches 25 to 50mm Figure 49 2 To loosen the belt tension turn the idler adjustment screws located on the idler end of the conveyor counter clock...

Page 42: ...links that need replacing and use the section of conveyor belt furnished in your installation kit to replace them NOTE Before connecting the inside master links notice that these links have a correct...

Page 43: ...th the set screw in the conveyor shaft collar Once in place tighten the 3 32 set screw 2 Lift the conveyor and install the drive chain to the conveyor drive sprocket and motor sprocket 3 The angle pla...

Page 44: ...cal contactor terminal screws as shown in Figure 62 B Ventilation Check that the air circulation throughout the oven is not blocked and is working properly IV MAINTENANCE EVERY 6 MONTHS A Oven Vent Ch...

Page 45: ...O ENGLISH DESCRIPTION QUANTITY 1 28041 0011 Contactor DP 25A 208 240V 1 2 74106 Motor Conveyor Drive w Magnet 1 3 60671 Board Amplifier Signal 0 15VDC 1 4 32108 XFMR 240V PRI 24V 65VA SEC 1 5 33812 8...

Page 46: ...SECTION 4 MAINTENANCE 46 NOTES...

Page 47: ...ntroller to a new setting above 200 F after turning the BLOWER switch to off for 30 seconds Start the oven again If the oven still does not heat call your Middleby Marshall Service Agency CONVEYOR WIL...

Page 48: ...HEAT BLOWER and CONVEYOR switches to the OFF O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Start up procedure in Section 3 Check that the Set Point is above 200...

Page 49: ...SECTION 5 TROUBLESHOOTING 49 NOTES...

Page 50: ......

Page 51: ...SECTION 6 ELECTRICAL SCHEMATICS 51 SECTION 6 ELECTRICAL SCHEMATICS Wiring Diagram G208 240 50 60 W INV PS629G 74623 REV F...

Page 52: ...er 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 w...

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