Middleby Marshall PS360 SERIES Operation manual

Gas PS360/PS360WB Tandem (AGA), English
owner's operating
& installation manual
SERIES PS360/PS360WB
TANDEM GAS OVEN MODELS
A MIDDLEBY COMPANY
P/N 39223
Rev. B  V2  3/99
Price $30.00
© 1999 Middleby Marshall Inc.
PS360/PS360WB Tandem Oven
PS360/PS360WB Double Tandem Oven
PS360/PS360WB Tri Tandem Oven
PS360/PS360WB Quad Tandem Oven

Middleby Marshall Inc.  1400 Toastmaster Drive  Elgin, IL 60120  USA  [phone]  FAX [phone]
Middleby Corporation Service Hotline [phone]
www.middleby.com
NOTICE:
This Operating and Installation Manual should be given to the user. The operator of the oven should be familiar
with the functions and operation of the oven.
This manual must be kept in a prominent, easily reachable location near the oven.
The oven has a combustion system suitable for use with all natural gases and can be converted by a qualified
service agent for use with liquified gas.
It is suggested to obtain a service contract with a manufacturer's certified service agent.
i
WARNING
POST, IN A PROMINENT LOCATION, THE EMERGENCY TELEPHONE NUMBER OF YOUR LOCAL GAS SUP-
PLIER 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.
NOTICE
CONTACTYOURLOCALSERVICECOMPANYTOPERFORMMAINTENANCEANDREPAIRS.
ASERVICEAGENTDIRECTORYISSUPPLIEDINYOURINSTALLATIONKIT.
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 MARSHALL INC.
NO QUIBBLE LIMITED WARRANTY
(U.S.A. ONLY)
MIDDLEBY MARSHALL, HEREINAFTER REFERRED TO
AS THE SELLER, WARRANTS EQUIPMENT MANUFAC-
TURED 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SOPTION,WITHOUTCHARGE,ANYPARTFOUND
TO BE DEFECTIVE AND ANY LABOR AND MATERIAL EX-
PENSE INCURRED BY SELLER IN REPAIRING OR RE-
PLACING 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 SHIPMENT, 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
certified installer.
Normal maintenance functions, including lubrication, clean-
ing or customer abuse 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 prin-
cipal 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 warranty shall be 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 Buyer.
ii
MIDDLEBY MARSHALL INC.
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 to be
defective and any labor and material expense incurred by
Seller in repairing or replacing such part, such warranty to
be limited to a period of one year from 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 certified installer.
Normal maintenance functions, including lubrication, ad-
justment 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 person-
nel.
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 consequential damages of any
kind which occur during the course of installation of equip-
ment, 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.
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 guar-
antee the process of manufacture by Buyer or the quality of
product to be produced by the equipment supplied hereun-
der 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 EXPRESS AND IMPLIED WARRANTIES
WHATSOEVER. SPECIFICALLY THERE ARE NO IMPLIED
WARRANTIES OF MERCHANTABILITY OR OF FITNESS
FOR A PARTICULAR PURPOSE.
The foregoing shall be Sellers sole and exclusive obliga-
tion 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.

iii
page
SECTION1-DESCRIPTION ................................................. 1-1
I. OVENSPECIFICATIONS .................................... 1-1
A. PhysicalSpecifications ................................. 1-1
B. GeneralSpecifications .................................. 1-1
C. ElectricalSpecifications ................................ 1-1
D. GasOrifice and Pressure Specifications ........ 1-1
II. OVEN USES ....................................................... 1-2
III. OVENCOMPONENTS ........................................ 1-2
A. ConveyorDrive Motor .................................... 1-2
B. AirFingers .................................................... 1-2
C. Conveyor ...................................................... 1-2
D. Window ........................................................ 1-2
E. OvenData Plate ............................................ 1-2
F. CrumbPans .................................................. 1-2
G. ControlPanel ................................................ 1-2
H. MachineryCompartmentAccessPanel .......... 1-2
I. EndPanels ................................................... 1-2
J. ConveyorEndStop ....................................... 1-2
K. ConveyorExtension Covers .......................... 1-2
L. GasBurner ................................................... 1-2
M. Blowers ........................................................ 1-2
N. CoolingFans ................................................. 1-2
SECTION2-INSTALLATION ............................................... 2-1
I. INSTALLATIONKIT ............................................. 2-2
II. TRANSITION CHAMBERCOMPONENTS ........... 2-2
III. VENTILATIONSYSTEM ...................................... 2-3
A. Requirements ................................................ 2-3
B. Recommendations ......................................... 2-3
C. Other VentilationConcerns ............................ 2-3
IV. THERMOCOUPLEINSTALLATION ...................... 2-4
V. ASSEMBLY ......................................................... 2-5
A. OvenStand ................................................... 2-5
B. Joining theOvenBodies ................................ 2-5
C. Installing theCenter Transition ....................... 2-7
D. Installing theConveyorFrame andBelt ........... 2-9
VI. ELECTRICALSUPPLY ....................................... 2-12
VII. GAS SUPPLY .................................................... 2-13
A. Connection ................................................... 2-13
B. GasConversion ........................................... 2-14
page
SECTION3-OPERATION .................................................... 3-1
I. LOCATIONAND DESCRIPTIONOFCONTROLS 3-1
A. BLOWERSwitch .......................................... 3-1
B. HEATSwitch ................................................ 3-1
C. CONVEYOR Switch ...................................... 3-1
D. DigitalTemperatureController ....................... 3-1
E. ConveyorSpeed Display ............................... 3-1
F. ConveyorSpeedAdjustmentKnob ................. 3-1
G. ConveyorSpeedController ............................ 3-1
H. MachineryCpt.Access Panel Safety Switch .. 3-1
II. NORMALOPERATION,STEP-BY-STEP ............ 3-2
A. Daily StartupProcedures ............................... 3-2
B. DailyShutdown Procedures ........................... 3-2
III. QUICKREFERENCE:BAKE TIME ...................... 3-3
IV. QUICKREFERENCE:DIGITALTEMPCONTROL 3-3
V. QUICKREFERENCE:TROUBLESHOOTING ...... 3-4
SECTION4-MAINTENANCE ............................................... 4-1
I. MAINTENANCE- DAILY ...................................... 4-2
II. MAINTENANCE-MONTHLY ............................... 4-3
III. MAINTENANCE- EVERY 3MONTHS ................. 4-4
IV. MAINTENANCE -EVERY6 MONTHS ................. 4-4
SECTION5-ELECTRICALSCHEMATICS ............................ 4-1
I. WIRINGDIAGRAM,PS360/PS360WB
Tandem&DoubleTandemOvens ......................... 4-1
II. WIRINGDIAGRAM,PS360/PS360WB
TriTandem&QuadTandemOvens ....................... 4-2
TABLE OF CONTENTS

1-1
SECTION 1
DESCRIPTION
A. PHYSICAL SPECIFICATIONS
Tandem Double Tandem Tri Tandem Quad Tandem
PS360 PS360WB PS360 PS360WB PS360 PS360WB PS360 PS360WB
Dimensions:
Overall Height (inc. top) 45-1/2 45-1/2 81-1/2 81-1/2 64-1/2 64-1/2 64-1/2 64-1/2
1156mm 1156mm 2070mm 2070mm 1638mm 1638mm 1638mm 1638mm
Overall Depth (inc. motor 52 60 52 60 52 60 52 60
shroud and window) 1321mm 1524mm 1321mm 1524mm 1321mm 1524mm 1321mm 1524mm
Overall Depth (inc. motor 49 57 49 57 49 57 49 57
shroud - no window) 1245mm 1448mm 1245mm 1448mm 1245mm 1448mm 1245mm 1448mm
Overall Length 144-1/2 144-1/2 144-1/2 144-1/2 199 199 273-1/2 273-1/2
3670mm 3670mm 3670mm 3670mm 5055mm 5055mm 6947mm 6947mm
Conveyor Width 32 40 32 40 32 40 32 40
813mm 1016mm 813mm 1016mm 813mm 1016mm 813mm 1016mm
Recommended Minimum
Clearances:
Rear of Oven (inc. motor 1 1 1 1 1 1 1 1
shroud) to Wall 25mm 25mm 25mm 25mm 25mm 25mm 25mm 25mm
Conveyor Extension to Wall 0 0 0 0 0 0 0 0
(both ends) 0mm 0mm 0mm 0mm 0mm 0mm 0mm 0mm
B. GENERAL SPECIFICATIONS (per oven section)
PS360 PS360WB
Weight 1350 lbs. (612kg) 1400 lbs. (634kg)
Shipping Weight 1675 lbs. (760 kg) 1750 lbs. (780kg)
Shipping Cube Approx. 104.5 ft3 (3.0 m3) Approx. 122 ft.3(3.5m3)
Rated Heat Input 135,000 BTU (34,020 kcal, 40 kW/hr) 170,000 BTU (42,840 kcal, 50 kW/hr)
Maximum Operating Temperature 550°F (288°C)
Air Blowers Two blowers at 1550 ft.3/min. (43.9m3/min.) at 1700 rpm
0.88 (2.2cm) Water Static Pressure
Average Air Jet Velocity 2600 ft./min. (1320cm/sec.)
WarmupTime 15 min.
Flue Vent 1.08" (27mm) D x 3" (76mm) W
Exhaust Flow 80 ft.3/min. (2.1 m3/min.)
D. GAS ORIFICE AND PRESSURE SPECIFICATIONS (per oven section)
Gas Type Main Orifice I.D. Main Orifice I.D. Pilot Orifice Bypass Orifice Supply (Inlet) Orifice (Manifold)
(PS360) (PS360WB) I.D. I.D. Pressure Pressure
Natural 0.219 0.250 0.028 0.065/#53 drill 6-12 W.C. 3.5 W.C.
(5.56mm) (6.35mm) (0.71mm) (1.65mm) (14.9-29.9mbar) (8.7mbar)
Propane 0.134 0.152 0.018 0.034/#62 drill 11-14 W.C. 10 W.C.
(3.40mm) (3.86mm) (0.46mm) (0.86mm) (27.4-34.9mbar) (24.9mbar)
C. ELECTRICAL SPECIFICATIONS (per oven section)
Main Blower Voltage Control Circuit Voltage Phase Freq Current Draw Poles Wires
208-240V 120V 1 Ph 50/60Hz 8A 3 Pole 4 Wire (2 hot, 1 neut, 1 gd)
190/200/208/220/380V(export) 110V (transformer) 1 Ph 50Hz 8A 2 Pole 3 Wire (2 hot, 1 gd)
SECTION 1
DESCRIPTION
I. OVEN SPECIFICATIONS

1-2
SECTION 1
DESCRIPTION
H. Machinery
Compartment
Access Panel
G. Control
Panel
E. Oven Data
Plate
A. Conveyor
Drive Motor
(inside shroud)
L. Crumb Pan
D. Front
Loading
Window
I. End Panels
B. Air Fingers
(inside baking
chamber) C. Conveyor
K. Conveyor
Extension
Covers
F. Crumb Pan
J. Conveyor
End Stop
A. Conveyor Drive Motor: Moves the conveyor.
B. Air Fingers: Project streams of hot air onto the food
product.
C. Conveyor: Moves thefoodproduct through the oven.
D. Window (on ovens so equipped): Allows the user
to see and access food products inside the baking
chamber.
E. Oven Data Plate: Provides specifications for the
oven that affect installation and operation. Refer to
Section 2, Installation, for details.
F. Crumb Pans: Catch crumbs and other material that
drop through the conveyor belt. One crumb pan is
located at each end of the conveyor.
G. Control Panel: Location of the operating controls for
the oven. Refer to Section 3, Operation, for details.
H. Machinery Compartment Access Panel: Allows
access to the oven's interior components. No user-
servicableparts are locatedin the machinerycompart-
ment.
III. OVEN COMPONENTS
Figure 1-1 - Oven Components
I. End Panels: Allow access to the oven's interior
components. No user-servicable parts are located
inside the end panels.
J. Conveyor End Stop (not present on ovens with
heavy-duty conveyor): Prevents food productsfrom
falling off the end of the moving conveyor.
K. Conveyor Extension Covers (not present on ov-
ens with heavy-duty conveyor): Cover the ends of
theconveyorframe. Onecoverislocated at each end
of the conveyor.
Not Shown:
L. Gas Burner: Heats air, which is then projected to the
airfingersbythe blowers. The burner is turned onand
offaccording tothesettingsonthe DigitalTemperature
Controller (located on the Control Panel).
M. Blowers: Fans that project hot air from the burner to
the air fingers.
N. Cooling Fans: Cooltheinteriorofthe oven to protect
the components.
II. OVEN USES
PS360/PS360WB Tandem Ovens can be used to
bakeand/orcook a widevarietyof food products,such
as pizza, pizza-type products, cookies, sandwiches
and others.

2-1
SECTION 2
INSTALLATION
SECTION 2
INSTALLATION
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.
CAUTION
For additional installation information, refer to the PS360 Pre-Installation Procedures Manual (Middleby
Marshall P/N 88210-0024) or contact your local Authorized Service Agent.
NOTE
There must be adequate clearance between the oven and combustible construction. Clearance must
also be provided for servicing and for operation.
NOTE
Wiring diagrams are contained in this manual (Section 5, Electrical Schematics) and are also
located inside the Machinery Compartment Access Panel.
NOTE
All aspects of the oven installation, including placement, utility connections, and ventilation requirements, must
conform with any applicable local and national codes. These codes supercede the requirements and guidelines
provided in this manual.
NOTE
In U.S.A., the oven installation must conform with local codes, or in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1. The oven, when installed, 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, or in the absence of local codes, with the Natural
Gas Installation Code, CAN/CGA-B149.1, or the Propane Gas Installation Code, CAN/CGA-B149.2, as applicable.
The oven, when installed, must be electrically grounded in accordance with local codes, or in the absence of local
codes, with the Canadian Electrical Code CSA, C22.2, as applicable.
NOTE
For Australian installation, the oven installation must conform with AGA Code, AG601, and with any requirements of
the appropriate statutory authority.

2-2
SECTION 2
INSTALLATION
Item Part # Description Tandem Double Tandem Tri Tandem Quad Tandem
1 22361-0001 Flexible Gas Hose 2434
2 22450-0028 Adjustable Legs 8 8 12 16
3 30773 Flue Vent, 14"Lg. 2 - - -
4 30759 Flue Vent, 29-1/2"Lg. - 2 3 4
5 30758 Flue Vent, 50" Lg. - 2 - -
6 21256-0008 Screw, 10-32 x 3/8 A/R A/R A/R A/R
7 35000-1103 Conveyor End Stop - PS360 1 2 - -
35000-1899 Conveyor End Stop - PS360WB
8 21292-0001 Scr, #2PT 10-16 x 3/4 Hx Wsh A/R A/R A/R A/R
9 33984 Thermocouple 2434
10 27276-0001 CableClamp 2434
11 1002040 Warranty, Parts & Serv. Dist.List 1111
12 39223 Owners Operating and Installation Manual (English) 1111
13 27126-0238 11 Piece Hex Key Set 1111
14 31389 Silicone Tubing, 36 (914mm) L x 2434
5/16 (8mm) ID x 7/16 (11mm) OD
- 35000-1454 Machinery Compartment Trim Strip 1222
- 35000-1456 Front Gasket Spacer 2444
- 35000-1457 Rear Gasket Spacer 2444
- 37200-0013 Baking Chamber Gasket and Frame - PS360 1222
32483 Baking Chamber Gasket and Frame - PS360WB
Fig. 2-1 - Installation Kit
I. INSTALLATION KIT
II. TRANSITION CHAMBER COMPONENTS (Quad Tandem Ovens Only)
Qty. Part # Description
1 37000-0696 Floor Panel - PS360
32457 Floor Panel - PS360WB
1 48009-0024 Top Panel - PS360
32456 Top Panel - PS360WB
Qty. Part # Description
1 48009-0025 Side Wall
1 35000-1748 Rear Support
2 35000-1749 Front Support
2 37000-0697 Top Support Channel - PS360
32455 Top Support Channel - PS360WB

2-3
SECTION 2
INSTALLATION
The rate of air flow exhausted through the ventilation
systemmayvary depending ontheovenconfiguration and
hooddesign.Consult the hoodmanufacturerorventilation
engineer for these specifications.
Toavoida negative pressure conditioninthekitchen area,
returnair must bebroughtback toreplenishthe air thatwas
exhausted. A negative pressure in the kitchen can cause
heat-relatedproblemstotheoven 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. Throughthe HVAC system,
the air can be temperature-controlled for summer and
winter. Return air can also be brought in directly from
outsidethe building, butdetrimentaleffects can resultfrom
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.
Fig. 2-2 - Ventilation System
A. REQUIREMENTS
Amechanically driven ventilationsystemis required forthe
oven.
PROPER VENTILATION OF THE OVEN IS THE
RESPONSIBILITY OF THE OWNER.
B. RECOMMENDATIONS
NOTETHATTHE HOOD DIMENSIONSSHOWNIN FIG-
URE 2-2 ARE RECOMMENDATIONS ONLY. LOCAL
AND NATIONAL CODES WILL VARY, AND MUST BE
FOLLOWED WHEN INSTALLING THE VENTILATION
SYSTEM. ANY APPLICABLE LOCAL AND NATIONAL
CODES SUPERSEDE THE RECOMMENDATIONS
SHOWN IN THIS MANUAL.
III. VENTILATION SYSTEM
IMPORTANT
Where national or local codes require
the installation of fire suppression
equipment or other supplementary
equipment, DO NOT mount the equip-
ment 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
C. OTHER VENTILATION CONCERNS
 Special locations, conditions, or problems may re-
quire the services of a ventilation engineer or special-
ist.
 Inadequateventilationcaninhibit oven performance.
 It is recommended that the ventilation system and
ductworkbecheckedatprevailingintervalsasspeci-
fiedbythehoodmanufacturerand/or HVAC engineer
or specialist.

IV. THERMOCOUPLE INSTALLATION
1. Install the thermocouple sensing bulb into the correct
hole in the rear of the oven, as shown in Figure 2-3.
2. Thread the thermocouple lead through the grommet
and into the machinery compartment.
3. Removetheright-sideaccesspanelof the machinery
compartment.
4. Thread the thermocouple lead through the side of the
machinery compartment as shown in Figure 2-4, and
into the electrical box (at the right-front of the machin-
erycompartment).
5. Connect the thermocouple leads to the temperature
controller as shown in Figure 2-5.
6. Repeat Steps 1-5 for each of the other oven sections in
the installation.
8=White=Positive
7=Red=Negative
R=No Connection
Ground=Shieldedcable
Figure 2-3
Thermocouple Installation Locations
Figure 2-4
Placing the Thermocouple Leads
Figure 2-5
Thermocouple Lead
Connections
Use for conveyor
Use for conveyor
Thread lead into
machinery
compartment here
Thread lead into
machinery
compartment here