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P/N 60250  September 28, 2012

SECTION 2 – INSTALLATION

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

•  Perform a gas leak test. 

•  Test for proper combustion and gas supply.

•  Test for correct air supply, particularly to the   •  Check that the ventilation system is in operation.

 

  burner blower.

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.

CAUTION: 

To reduce the risk of fire, the appliance is to be mounted on floors of noncombustible construction 

with noncombustible flooring and surface finish and with no combustible material against the underside thereof, 

or on noncombustible slabs or arches having no combustible material against the underside thereof, such con

-

struction shall in all cases extend not less than 12 inches (304mm) beyond the equipment on all sides.

CAUTION: 

For additional installation information, 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 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 require-

ments and guidelines provided in this manual.

NOTE: 

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

installations must conform with the National Fuel Gas Code, ANSI Z223.1. Gas and electric ovens, 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. 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. Gas and electric ovens, 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.

 

NOTE: 

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

oven installations must conform with the requirements of AS5601/AG601, Gas, Electricity, and any other relevant 

statutory regulations.

Summary of Contents for PS740 Series

Page 1: ...rk of Middleby Marshall Inc All rights reserved Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 847 741 3300 FAX 847 741 4406 PS740 Series Gas Ovens P N 60250 September 28 2012 PS...

Page 2: ...any They will have personnel and provisions available to correct the problem WARNING FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY O...

Page 3: ...O 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 obligation and Buyer s sole and exclusi...

Page 4: ...lation Concerns 12 IV ASSEMBLY 13 A Base Pad Legs Casters 13 B Stacking 14 C Restraint Cable Installation 14 D Conveyor Installation 15 E Standoff Installation 15 V FINAL ASSEMBLY 16 VI ELECTRICAL SUP...

Page 5: ...ow Allows the user to access food products inside the baking chamber G Machinery Compartment Access Panel Allows access to the oven s interior and control components No user ser viceable parts are loc...

Page 6: ...s Main Blower Control Circuit Phase Freq Current Poles Wires Voltage Voltage Draw 208 240VAC 208 240VAC 1Ph 50 60Hz 11 9 6 Amp 2 Pole 3 Wire 2 hot 1 gd Table 1 4 Gas orifice and pressure specification...

Page 7: ...Agent 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...

Page 8: ...ERVICE AGENCY DIRECTORY 5 1 22500 0080 LABEL MM 6 1 51054 ASSY HANDLE DOOR Figure 2 1A PS740 Series Gas Oven Installation Parts PS740 24 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT PS740 PS740 PS740...

Page 9: ...7025 P N67026 P N66164 PS740 Single Gas Oven 1 1 PS740 Double Gas Oven 2 1 PS740 Triple Gas Oven 3 1 3 2 4 6 5 1 PARTS LIST FOR SERIES PS740 GAS OVEN INSTALLATION KIT P N 61033 Two required for double...

Page 10: ...0 11 1 2 4 9 8 ITEM NO QTY PART NO DESCRIPTION 1 1 64943 COMPLETE BASE WELDMENT 2 4 66851 TOP PLATE LEG WELDMENT 4 4 58930 SWIVEL CASTER FLAT PLATE 5 32 2000531 3 8 16 1 HEX SCREW SST 6 32 21416 0001...

Page 11: ...0 11 1 2 4 9 8 ITEM NO QTY PART NO DESCRIPTION 1 1 66159 COMPLETE BASE WELDMENT 2 4 66851 TOP PLATE LEG WELDMENT 4 4 58930 SWIVEL CASTER FLAT PLATE 5 32 2000531 3 8 16 1 HEX SCREW SST 6 32 21416 0001...

Page 12: ...T 6 32 21416 0001 3 8 FLAT WASHER SS 7 32 21422 0001 3 8 SPLIT LOCK WASHER ZP 8 1 22450 0228 RESTRAINT CABLE ASSEMBLY 9 1 61125 TOP COVER 10 2 59677 SCR MS SL TR HD 10 32 2 1 2 11 2 7A2S15 SCR MS STR...

Page 13: ...T 6 32 21416 0001 3 8 FLAT WASHER SS 7 32 21422 0001 3 8 SPLIT LOCK WASHER ZP 8 1 22450 0228 RESTRAINT CABLE ASSEMBLY 9 1 59560 TOP COVER 10 2 59677 SCR MS SL TR HD 10 32 2 1 2 11 2 7A2S15 SCR MS STR...

Page 14: ...21422 0001 3 83 SPLIT LOCK WASHER ZP 10 16 21172 0004 3 83 16 NYLON INSULATED LOCKNUT ZC 11 8 2001048 1 23 13 x 1 3 8 18 8 HEX CAPSCREW 12 8 A27750 1 23 18 8 FLAT WASHER 13 8 21422 0016 1 23 18 8 LOCK...

Page 15: ...21422 0001 3 83 SPLIT LOCK WASHER ZP 10 16 21172 0004 3 83 16 NYLON INSULATED LOCKNUT ZC 11 8 2001048 1 23 13 x 1 3 8 18 8 HEX CAPSCREW 12 8 A27750 1 23 18 8 FLAT WASHER 13 8 21422 0016 1 23 18 8 LOCK...

Page 16: ...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 b...

Page 17: ...h leg extension as shown in Figure 2 7 Use the 3 8 16 1 screws 3 8 flat wash ers and 3 8 lockwashers supplied in the Installation Kit The locking casters should be installed at the FRONT of the oven T...

Page 18: ...the top panel using the screws included in the base pad kit as shown in Figure 2 10 Figure 2 9 Stacking Figure 2 10 Top panel installation C Restraint Cable Installation Because the oven is equipped w...

Page 19: ...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 conv...

Page 20: ...eye assembly Remove the two screws securing the photo eye assembly to the control box Remove the four nuts securing the photo eye to the housing Rotate the photo eye 180 degrees and resecure the photo...

Page 21: ...ply as indicated on the wiring diagram 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 Figur...

Page 22: ...oven s warranty require all start ups conversions and service work to be performed by a Middleby Authorized Service Agent D PS740 Propane Conversion Two items have to be changed to change the oven to...

Page 23: ...ing clockwise to increase or counter clockwise to decrease pressure until the desired minimum outlet pressure is obtained 6 Check if main burner lights easily and reliable at minimum pressure 7 Reconn...

Page 24: ...ime Dual belt ovens have two displays single units have one C Temperature Control Display A Main On Off Button B Conveyor Time Setting C Temperature Control Display E Energy Level Indicators E Energy...

Page 25: ...tes current average tem perature of the left side of the oven NOTE Right to Left temperature settings should not exceed a differential of 20 F 3 Right Set point temperature Pressing on this value allo...

Page 26: ...M PROBLEM SOLUTION Clean and replace the front fan filters Failure to do this will eventually shut down the oven due to excessive temperature High Control Compartment Temperature The computer has dete...

Page 27: ...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 If the restraint...

Page 28: ...in Figure 4 3 AS EACH FINGER IS DISASSEMBLED WRITE THE LOCA TION CODE FOR THE FINGER ON ALL THREE OF ITS PIECES This will help you in correctly reassembling the air fingers CAUTION Incorrectreassembl...

Page 29: ...osen the set screw on both of the conveyor drive sprockets Then removethesprocketsfromtheshaft 11 Check the conveyor configuration as follows High speed conveyors are equipped with large flange bearin...

Page 30: ...4 6mm deflection is reached then tighten the bolts Figure 4 7 Rear panel access Remove eight 8 screws to remove rear panel Blower belt Bearings 2 total Blower motor Loosen four 4 screws to adjust mo...

Page 31: ...Cooling Rear 9 1 62044 Air Switch 10 1 57288 Motor Blower 11 1 61602 Ignition Module 12 1 60679 Assy Valve Gas Modulating 13 1 60671 Board Signal Cond 0 15VDC 14 1 33983 High Limit Control Module 240...

Page 32: ...28 P N 60250 September 28 2012 SECTION 5 WIRING DIAGRAM Middleby Marshall Model Number G208 240 Volt 50 60 Hz 1 Phase 59324 Rev E...

Page 33: ...29 P N 60250 September 28 2012 NOTES...

Page 34: ...30 P N 60250 September 28 2012 NOTES...

Page 35: ...31 P N 60250 September 28 2012 NOTES...

Page 36: ...rty damage injury or death Read the installation op erating and maintenance instructions thoroughly before installing or servicing this equipment NOTICE During the warranty period ALL parts replacemen...

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