PS500 Series
P/N 46450
Gas & Electric
Revꢀ B • V2 • 11/01
Domestic & Stdꢀ Export
ENGLISH/French/Spanish
PS500 Series Gas and Electric Ovens
Model:
Combinations:
•
•
•
PS555G Gas
•
•
•
•
SingleOven
PS555E Electric
PS570G Gas
DoubleOven(Two-Stack)
TripleOven(Three-Stack)
QuadOven(Four-Stack)
OWNER'S OPERATING AND
INSTALLATION MANUAL
for domestic and standard export ovens
©2001MiddlebyMarshall, Incꢀ
is a registered trademark of Middleby Marshall, Incꢀ All rights reservedꢀ
Middleby Cooking Systems Group
•
1400 Toastmaster Drive
•
Elgin, IL 60120
•
(847)741-3300
•
FAX (847)741-4406
1
Download from Www.Somanuals.com. All Manuals Search And Download.
TABLEOFCONTENTS
page
page
SECTION1-DESCRIPTION ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Iꢀ OVEN USESꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Vꢀ FINALASSEMBLY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10
VIꢀ ELECTRICAL SUPPLY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10
Aꢀ Additional Information - Gas Ovensꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10
Bꢀ Additional Information - Electric Ovens ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10
Cꢀ Connection ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10
VIIꢀ GASSUPPLY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ11
Aꢀ Gas Utility Rough-In Recommendations ꢀꢀꢀꢀꢀꢀꢀ11
Bꢀ Connection ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ12
Cꢀ Gas Conversion ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ12
IIꢀ OVENCOMPONENTS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Aꢀ Conveyor Drive Motor ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Bꢀ Crumb Pans ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Cꢀ Conveyor End Stopꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Dꢀ Conveyor Rear Stopꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Eꢀ Conveyor ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Fꢀ End Plugs ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Gꢀ Eyebrows ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Hꢀ Window ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Iꢀ Machinery Compartment Access Panel ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Jꢀ Serial Plate ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Kꢀ Control Panelꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Lꢀ Gas Burner or Heating Elements ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Mꢀ Blowersꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Nꢀ Air Fingers ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
IIIꢀ OVENSPECIFICATIONS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Aꢀ Dimensions ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Bꢀ General Specificationsꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
SECTION3-OPERATION ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Iꢀ
LOCATION AND DESCRIPTION OF CONTROLS ꢀ13
Aꢀ BLOWER ( ) Switch ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Bꢀ HEAT ( ) Switch ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Cꢀ CONVEYOR (
) Switch ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Dꢀ Conveyor Speed Controller ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Eꢀ Digital Temperature Controller ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ13
Fꢀ Machinery Cptꢀ Access Panel Safety Switch ꢀꢀ13
IIꢀ NORMALOPERATION,STEP-BY-STEP ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ14
Aꢀ Daily Startup Procedures ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ14
Bꢀ Daily Shutdown Procedures ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ14
IIIꢀ QUICK REFERENCE: DIGITAL TEMP CONTROLꢀ15
IVꢀ QUICK REFERENCE: TROUBLESHOOTING ꢀꢀꢀꢀꢀꢀꢀ 16
Cꢀ Electrical Specifications for PS555E Electric
Ovens ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 4
Dꢀ Electrical Specifications for PS555G and
PS570G Gas Ovens ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5
Eꢀ Gas Orifice and Pressure Specifications
for PS555G and PS570G Gas Ovensꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5
SECTION4-MAINTENANCE ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ17
Iꢀ
MAINTENANCE-DAILYꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ17
SECTION2-INSTALLATIONꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5
IIꢀ MAINTENANCE-MONTHLY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ18
IIIꢀ MAINTENANCE - EVERY 3 MONTHS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ19
IVꢀ MAINTENANCE - EVERY 6 MONTHS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ20
Vꢀ KEY SPARE PARTS KIT ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ21
Iꢀ
BASE PAD KITꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 6
IIꢀ INSTALLATIONKIT ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 7
IIIꢀ VENTILATIONSYSTEM ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 7
Aꢀ Requirements ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 7
Bꢀ Recommendations ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 7
Cꢀ Other Ventilation Concerns ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 7
IVꢀ ASSEMBLY ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 8
Aꢀ Base Pad, Legs, Casters, and Stacking ꢀꢀꢀꢀꢀꢀꢀꢀꢀ 8
Bꢀ Restraint Cable Installation ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 8
Cꢀ Conveyor Installationꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 8
SECTION5-ELECTRICALWIRINGDIAGRAMS ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ22
Iꢀ
WIRING DIAGRAM, PS555G OR PS570G
GAS OVEN, 208/240V, 50/60 Hz, 1 Ph ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ22
IIꢀ WIRING DIAGRAM, PS555E ELECTRIC OVEN,
208V OR 240V, 50/60 Hz, 3 Ph ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ23
IIIꢀ WIRING DIAGRAM, PS555E ELECTRIC OVEN,
380V OR 480V, 50/60 Hz, 3 Ph ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ24
3
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SECTION1-DESCRIPTION
Kꢀ Control Panel: Location of the operating controls for the
ovenꢀ Refer to Section 3, Operation, for detailsꢀ
Not Shown:
Iꢀ OVEN USES
PS500 Series Ovens can be used to bake and/or cook a
wide variety of food products, such as pizza, pizza-type
products, cookies, sandwiches and othersꢀ
Lꢀ Gas Burner (gas ovens) or Heating Elements (electric
ovens): Heat air, which is then projected to the air fingers
by the blowersꢀ
IIꢀ OVEN COMPONENTS - see Figure 1-1ꢀ
Aꢀ Conveyor Drive Motor: Moves the conveyorꢀ
Mꢀ Blowers: Project hot air from the burner or heating ele-
ments to the air fingersꢀ
Bꢀ Crumb Pans: Catch crumbs and other material that drop
through the conveyor beltꢀ One crumb pan is located at
each end of the conveyorꢀ
Nꢀ AirFingers: Projectstreamsofhotairontothefoodproductꢀ
C,Dꢀ ConveyorEndStopandRearStop: Preventfoodproducts
Figure 1-1 - Oven Components
from falling off the end or rear of the moving conveyorꢀ
Eꢀ Conveyor: Moves the food product through the ovenꢀ
G
F
D
Fꢀ End Plugs: Allow access to the oven's interiorꢀ
Gꢀ Eyebrows: Can be adjusted to various heights to prevent
heat loss into the environmentꢀ
H
Hꢀ Window: Allows the user to access food products inside
the baking chamberꢀ
I
Iꢀ Machinery Compartment Access Panel: Allows access
to the oven's interior and control componentsꢀ No user-
servicable parts are located in the machinery compart-
mentꢀ
J
C
B
E
Jꢀ SerialPlate: Providesspecificationsfortheoventhataffect
installation and operationꢀ Refer to Section 2, Installation,
for detailsꢀ
K
A
III+ OVEN SPECIFICATIONS
Table 1-1: Dimensions
Overall Height
Single Oven
46-1/8” (1172mm)
63-3/8” (1610mm)
91” (2311mm)
Double Oven
60-1/8” (1527mm)
63-3/8” (1610mm)
91” (2311mm)
Triple Oven
62-1/2” (1588mm)
63-3/8” (1610mm)
91” (2311mm)
Quad Oven
78” (1981mm)
Overall Depth
63-3/8” (1610mm)
91” (2311mm)
Overall Length, PS555G and PS555E
Overall Length, PS570G
Conveyor Width
106” (2692mm)
106” (2692mm)
106” (2692mm)
106” (2692mm)
32” (813mm)
32” (813mm)
32” (813mm)
32” (813mm)
or 2x15" (381mm)
or 2x15" (381mm)
or 2x15" (381mm)
or 2x15" (381mm)
RecommendedMinimumClearances
Rear of Oven (incꢀ rear shrouds) to Wall
6" (152mm)
0" (0 mm)
6" (152mm)
0" (0 mm)
6" (152mm)
0" (0 mm)
6" (152mm)
0" (0 mm)
Conveyor Extension to Wall (both ends)
Table 1-2: General Specifications
Weight
PS555G
PS555E
PS570G
1175 lbs3 (533kg)
1175 lbs3 (533kg)
1400 lbs3 (634kg)
Rated Heat Input
150,000 BTU
32kW
170,000 BTU
(37,800 kcal, 44 kW/hr)
(42,840 kcal, 50 kW/hr)
Maximum Operating Temperature
Air Blowers
< - - - - - - - - - - - - - - 550°F / 288°C - - - - - - - - - - - - - - >
Two blowers at 1400 ft33/min3 (3936m3/min3) at 2050 RPM, 0340" (130cm) Water Static Pressure
< - - - - - - 2600 ft3/min3 (1320cm/sec3) average - - - - - - >
Average Air Jet Velocity
WarmupTime
< - - - - - - - - - - - - - - - - 15 min3 - - - - - - - - - - - - - - - - >
Table 1-3: Electrical specifications for PS555E electric ovens
Main Blower
Current Draw (per line)
kW
Voltage
Control Circuit Voltage
Phase
Freq
L1
L2
L3
N
Rating Poles
Wires
208V
120Vconveyorspeedcontroller (w/transformer);
all other control circuits 208V
3 Ph
50/60Hz
97ꢀ4A 88ꢀ8A 97ꢀ4A
--
32kW
3 Pole
3Pole
4 Pole
4 Wire
(3 hot, 1 gd)
220-240V
480V
120Vconveyorspeedcontroller (w/transformer);
allothercontrolcircuits220-240V
3 Ph
3 Ph
50/60Hz
83ꢀ0- 75ꢀ0- 83ꢀ0-
90ꢀ0A 86ꢀ0A 90ꢀ0A
--
29ꢀ3-
34ꢀ8kW
4 Wire
(3 hot, 1 gd)
120Vconveyorspeedcontroller (w/transformer);
all other control circuits 240V
50/60Hz
38ꢀ5A 38ꢀ5A 47ꢀ7A 9ꢀ2A
32kW
5 Wire (3 hot,
1 neut, 1 gnd)
4
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Table 1-4: Electrical specifications for PS555G and PS570G gas ovens
Main Blower Voltage
Control Circuit Voltage
Phase
Freq
Current Draw
Poles
Wires
208-240V
120Vconveyorspeedcontroller (w/transformer);
all other control circuits 208/240V
1 Ph
50/60Hz
12A
2Pole
3 Wire (2 hot, 1 gd)
Table 1-5: Gas orifice and pressure specifications for PS555G and PS570G gas ovens
Main Orifice I!D!
PS555G
Main Orifice I!D!
PS570G
Orifice (Manifold)
Pressure
Gas Type
Natural
Pilot Orifice I!D!
0ꢀ028”(0ꢀ71mm)
0ꢀ018”(0ꢀ46mm)
Supply (Inlet) Pressure
0ꢀ228”(5ꢀ79mm)
0ꢀ141” (3ꢀ58mm)
0ꢀ250"(6ꢀ35mm)
0ꢀ152"(3ꢀ86mm)
6-12”WꢀCꢀ(14ꢀ9-29ꢀ9mbar)
11-14”WꢀCꢀ(27ꢀ4-34ꢀ9mbar)
3ꢀ5” WꢀCꢀ (8ꢀ7mbar)
10” WꢀCꢀ (24ꢀ9mbar)
Propane
IMPORTANT - Additional electrical information is provided on the oven's serial plate, and on the wiring diagram inside
the machinery compartmentꢀ
SECTION2-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!
Checkthattheventilationsystemisinoperation!
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
constructionwithnoncombustibleflooringandsurfacefinishandwithnocombustiblematerialagainstthe
underside thereof, or on noncombustible slabs or arches having no combustible material against the
undersidethereof,suchconstructionshallinallcasesextendnotlessthan12inches(304!8mm)beyondthe
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 codesꢀ These codes supercede the requirements and
guidelines provided in this manualꢀ
NOTE: In the USA, the oven installation must conform with local codesꢀ In the absence of local codes, gas oven
installations must conform with the National Fuel Gas Code, ANSI Z223ꢀ1ꢀ Gas and electric ovens, when installed, must
beelectricallygroundedinaccordancewithlocalcodes,orintheabsenceoflocalcodes,withtheNationalElectricalCode
(NEC), or ANSI/NFPA70ꢀ
NOTE: In Canada, the oven installation must conform with local codesꢀ In the absence of local codes, gas oven
installations must conform with the Natural Gas Installation Code, CAN/CGA-B149ꢀ1, or the Propane Gas Installation
Code, CAN/CGA-B149ꢀ2, as applicableꢀ 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 C22ꢀ2ꢀ
NOTE: InAustralia, theoveninstallationmustconformwithanyrequirementsoftheappropriatestatutoryauthorityꢀ Gas
oven installtions must conform with AGA Code, AG601ꢀ
5
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SECTION2-INSTALLATION
Figꢀ 2-1 - Base Pad Kit
1
8
7
2
6
4a
9
13
11
5b
10
4b
3
12
5a
4c
Iꢀ BASE PAD KIT - see Figure 2-1
NOTE: One Base Pad Kit is required for each Single, Double, Triple, or Quad Oven installationꢀ
Quantity
Single oven Double oven Double oven Triple oven Triple oven Quad oven
with 19" leg with 10" leg with 15" leg with 4" leg without leg
with
Item
extensions extensions extensions extensions extensions outriggers
Part No"
Description
1a
1b
1c
1d
2
4
--
--
--
--
--
4
--
4
--
--
4
--
--
--
4
--
--
--
--
--
--
4
--
--
--
--
4
37210-0060
37210-0082
37210-0057
39684
Leg extension, 19” (483mm)
Leg extension, 10” (254mm)
Leg extension, 15” (381mm)
Leg extension, 4" (102mm)
Outrigger
--
--
--
--
4
--
--
--
4
--
--
4
45209
3
4
45205
Spacer, caster - for use with outrigger only
Caster, swivel (with stud)
Caster, swivel (with flat plate)
Caster, swivel (with flat plate and brake)
Adjustable foot, standard
Adjustable foot, quad ovens
Restraint cable, 60” (1524mm)
Eye bolt/lag screw
4a
4b
4c
5a
5b
6
--
2
37115-0102
45357
--
--
4
--
--
4
--
--
4
--
--
4
--
--
4
2
45664
--
4
22450-0028
45206
--
1
--
1
--
1
--
1
--
1
1
22450-0253
21392-0005
41643
7
1
1
1
1
1
1
8
1
1
1
1
1
1
Base pad
--
2
2
2
2
2
2
41582
Top cover (right or left)
--
8
8
8
8
8
8
21256-0069
21216-0018
21416-0003
21426-0004
A27727
Screw, sl trus hd #10-32 X 1-1/4”
Bolt, hex cap 1/2"-13 X 1-1/4”
Flat washer, 1/2”
--
16
16
16
--
--
--
16
16
16
--
--
--
16
16
16
--
--
--
16
16
16
--
--
--
--
--
--
--
--
--
8
--
8
--
8
Lock washer, 1/2”
--
16
32
16
Bolt, hex cap 3/8"-16 X 1”
Flat washer, 3/8”
--
A21924
--
21172-0004
Lock nut, hex, 3/8"-16
ADDITIONAL COMPONENTS FOR GAS OVENS:
9
1
2
2
2
1
2
1
2
2
2
1
2
1
2
2
2
1
2
1
2
2
2
1
2
1
2
2
2
1
2
1
2
2
2
1
2
33120-0056
27271-0004
33120-0055
23122-0007
22361-0003
21292-0001
Gas pipe, 1-1/4” dia9 X 54” (1372mm) L
Pipe clamp, 1-1/2”
10
11
12
13
--
Pipe nipple, 1-14” dia9 X 3” (76mm) L, NPT
Elbow, 90°, 1-1/4” dia9
Gas hose, 1-1/4” dia9 X 72” (1829mm) L
Screw, hex wshr hd #10-16 X 3/4”
6
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SECTION2-INSTALLATION
Figꢀ 2-2 - Installation Kit
IIꢀ INSTALLATION KIT - see Figure 2-2
NOTE: One Installation Kit is required for each oven cavityꢀ
2
1
5
Item Qtyꢀ
Part Noꢀ
35900-0148
35000-1103
46450
Description
4
3
1
2
3
4
1
1
1
1
Conveyor Rear Stop
Conveyor End Stop
Owner's Operating & Installation Manual
Authorized Service Agency Listing
1002040
ADDITIONAL COMPONENTS FOR GAS OVENS:
33120-0053 Gas Pipe Nipple
5
1
CODESSUPERSEDETHERECOMMENDATIONSSHOWNIN
THISMANUALꢀ
IIIꢀ VENTILATION SYSTEM
IMPORTANT
The rate of air flow exhausted through the ventilation system
may vary depending on the oven configuration and hood designꢀ
Consult the hood manufacturer or ventilation engineer for these
specificationsꢀ
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!
To avoid a negative pressure condition in the kitchen area,
return air must be brought back to replenish the air that was
exhaustedꢀ A negative pressure in the kitchen can cause heat-
related problems to the oven components as if there were no
ventilation at allꢀ The best method of supplying return air is
through the heating, ventilation and air conditioning (HVAC)
systemꢀ Through the HVAC system, the air can be temperature-
controlled for summer and winterꢀ Return air can also be
brought in directly from outside the building, but detrimental
effects can result from extreme seasonal hot and cold
temperatures from the outdoorsꢀ
MOUNTING SUCH EQUIPMENT ON THE OVEN MAY:
•
•
•
VOIDAGENCYCERTIFICATIONS
RESTRICTSERVICEACCESS
LEAD TO INCREASED SERVICE EXPENSES
FOR THE OWNER
Aꢀ Requirements
CAUTION
Gas oven installations REQUIRE a mechanically driven
ventilation system with electrical exhaust air sensing controlꢀ
NOTE: Return air from the mechanically driven system must not
blow at the opening of the baking chamberꢀ Poor oven baking
performance will resultꢀ
A mechanically driven ventilation system is STRONGLY
RECOMMENDED for electric oven installationsꢀ
PROPER VENTILATION OF THE OVEN IS THE Cꢀ Other ventilation concerns
RESPONSIBILITY OF THE OWNERꢀ
•
Special locations, conditions, or problems may require the
services of a ventilation engineer or specialistꢀ
Bꢀ Recommendations
•
•
Inadequate ventilation can inhibit oven performanceꢀ
NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2-
3ARERECOMMENDATIONSONLYꢀ LOCAL,NATIONAL,AND
INTERNATIONAL CODES MUST BE FOLLOWED WHEN
INSTALLINGTHEVENTILATIONSYSTEMꢀ ANYAPPLICABLE
It is recommended that the ventilation system and duct
work be checked at prevailing intervals as specified by the
hood manufacturer and/or HVAC engineer or specialistꢀ
Figꢀ 2-3 - Ventilation System
18” (458mm)
minimum
(Typical - both
ends of oven)
2” (51mm)
minimum
8” (203mm)
minimum
3” (76mm)
minimum
7
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SECTION2-INSTALLATION
Figure 2-4 - Legs and Casters - Standard
IVꢀ ASSEMBLY
Aꢀ Base Pad, Legs, Casters, and Stacking
Front or Rear
of oven
Left or Right Side
of oven
NOTE: Optional Stacking Lift Kit (P/N 30580)
The Stacking Lift Kit, P/N 30580, is available separatelyꢀ This
Kit provides a complete lift adapter set, specifically designed for
stacking PS500 Series oven cavitiesꢀ The Kit includes an
instructional videotapeꢀ
1/2"
flat washer
1ꢀ Install the top panels in place on the top oven cavityꢀ Follow
the instructions provided with the top panelsꢀ
2aꢀ Legs/CastersInstallation(Standard) -SingleOvens,Double
1/2"
lock
washer
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" lockwashersꢀ See Figure 2-4ꢀ
•
Install one adjustable foot and one caster into the
holesonthebottomofthelegextensionꢀ Theadjustable
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 holeꢀ
1/2"-13 x 1-1/4"
hex screw
Caster
uses
INSIDE
hole
Foot uses OUTSIDE
hole (closest to front
or rear of oven)
2bꢀ Legs/Casters Installation - Triple Ovens Without Leg
Extensions
Figure 2-5 - Legs and Casters for Triple Oven
Without Leg Extensions
Install one adjustable foot and one caster into the 3/4"
holes on the bottom of the base padꢀ The adjustable foot
should be installed into the OUTSIDE hole (closest to the
frontorrearfaceoftheoven)ꢀ Thecastershouldbeinstalled
into the INSIDE holeꢀ See Figure 2-5ꢀ
Front or Rear
of oven
Left or Right Side
of oven
2cꢀ 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" lockwashersꢀ See Figure 2-6ꢀ
•
Installthespacerplatesandcastersontotheoutriggers
using the 3/8"-16x1" screws, 3/8" flat washers, and
3/8"-16 hex nuts supplied in the Installation Kitꢀ The
two locking casters should be installed on the front
side of the ovenꢀ
Caster
uses
INSIDE
hole
Foot uses OUTSIDE
hole (closest to front
or rear of oven)
•
Install the adjustable feet into the holes on the
underside of the outrigger assemblyꢀ
Figure 2-6 - Legs and Casters for Quad Oven
Front or Rear
of oven
Left or Right Side
of oven
3ꢀ Install the base pad onto the lower oven cavityꢀ Check that
the eyebolt welded onto the pad faces the rear of the ovenꢀ
4ꢀ Stacktheovencavitiesꢀ Ifnecessary,refertotheinstructional
videotape provided with the Stacking Lift Kit (P/N 30580)ꢀ
Bꢀ Restraint Cable Installation
3/8"-16 x 1"
hex screw
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 pipingꢀ 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 wallꢀ See Figure 2-7ꢀ
Locking casters:
FRONT of oven
3/8" flat
washer
Non-locking
casters:
REAR of oven
Outrigger
After connecting the restraint cable, move the oven to its final
locationꢀ Adjust the bottom (hex) sections of the feet so that the
casters are off the floorꢀ For quad ovens, lock the two front
castersꢀ
Spacer
plate
1/2" flat
washer
Locking
caster
shown
Cꢀ ConveyorInstallation
1/2" lock
washer
NOTE
Split belt conveyors can only be installed from the end of the
oven with the drive motorꢀ
1/2"-13 x 1-1/4"
hex screw
Single-belt conveyor assemblies may be inserted into either
end of the ovenꢀ If it is to be installed from the end of the oven
without the drive motor, the drive sprocket assembly must be
removedꢀ
3/8" flat
washer
Adjustable
foot
3/8"-16
hex lock nut
8
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SECTION2-INSTALLATION
Figure 2-7 - Installing the Restraint Cable
To remove the drive sprocket (if necessary), loosen the set
screw on the conveyor collar as shown in Figure 2-8ꢀ Then, pull
the sprocket assembly straight outꢀ
Restraint cable
assembly
3/4” (19mm)
eyebolt
Eyebolt in
base pad
1ꢀ Lift the conveyor and position it in the ovenꢀ See Figure 2-9ꢀ
2ꢀ Continue moving the conveyor into the oven until the frame
protrudes equally from each end of the oven (about 18"/
457mm)ꢀ
Wall of
structure
Rear surface
of oven base
pad
3ꢀ Check that the retainers located on the underside of the
conveyor frame rest firmly against the lower end plugs, as
shown in Figure 2-9ꢀ
Figure 2-8 - Removing the Conveyor Drive Sprocket
4ꢀ When the conveyor is positioned properly, check for free-
dom of movement of the conveyor belt by pulling it for about
2-3 feet (60 to 90 cm) with your fingersꢀ The conveyor must
move freelyꢀ
Loosen conveyor collar
set screw, then pull
sprocket straight out
5ꢀ If the drive sprocket was removed when installing the
conveyor, replace it at this timeꢀ
6ꢀ Install the drive chain between the conveyor drive sprocket
and the motor sprocketꢀ To install the chain, it will be
necessary to lift the drive end of the conveyor slightlyꢀ
7ꢀ Install the conveyor drive motor coverꢀ
Figure 2-9 - Inserting the Conveyor
8ꢀ Check the tension of the conveyor belt as shown in Figure
2-10ꢀ The belt should lift between 3-4" (75-100mm)ꢀ DO
NOT OVERTIGHTEN THE CONVEYOR BELTꢀ
1
NOTE:
If necessary, the belt tension can be adjusted by turning the
conveyor adjustment screws, located at the idler (right) end
of the conveyorꢀ See Figure 2-10ꢀ
9ꢀ If necessary, links can be added to or removed from the
conveyor belt to achieve the correct deflection of 3-4" (75-
100mm)ꢀ If links must be removed from the belt, it can be
reattached to the conveyor as follows:
aꢀ The conveyor belt links must be oriented as shown in
Figure 2-11ꢀ
2
bꢀ The smooth side of the conveyor belt must face UPꢀ
cꢀ Connect the inside master linksꢀ Check that the links
are oriented as shown in Figure 2-11ꢀ
dꢀ Connect the outside master linksꢀ Note that the
outside master links have right and left sidesꢀ The
right-side master link has an open hook facing you, as
shown in Figure 2-11ꢀ
4
eꢀ Check for freedom of movement of the conveyor belt by
pulling it for about 2-3 feet (60 to 90 cm) with your
fingersꢀ The conveyor must move freelyꢀ
Retainer
End plug
3
fꢀ Return to Step 8, above, to re-check the belt tensionꢀ
Figure 2-10 - Checking the conveyor tension
Figure 2-11 - Conveyor and Master Link Orientation
Direction
of travel
CORRECT
master link
position
Conveyor
tension
adjustment
screws (idler
end only)
Incorrect
master link
position
3-4"(75-100mm)
vertical deflection
Outside master link
orientation
Inside master link
orientation
9
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SECTION2-INSTALLATION
Figure 2-12 - Crumb trays
Vꢀ FINAL ASSEMBLY
1ꢀ Install the crumb trays underneath the conveyor as shown
in Figure 2-12ꢀ First, place the inside edge of the tray onto
the retainer (shown in Figure 2-9)ꢀ Then, swing the outside
edge of the tray up and into placeꢀ
2ꢀ Press the conveyor end stop and rear stop down over the
edge of the conveyor frameꢀ See Figure 1-1 (in Section 1,
Description)ꢀ
Place inside
edge of tray on
retainer bracket
Swing outside
edge of tray
up and into
place
VIꢀ ELECTRICAL SUPPLY
WARNING
Aꢀ AdditionalInformation-GasOvens
Authorizedsupplierpersonnelnormallyaccomplish
the connections for the ventilation system, electric supply,
and gas supply, as arranged by the customerꢀ Following
these connections, the factory-authorized installer can
perform the initial startup of the ovenꢀ
Incoming electrical power lines are fed through the strain-
relief fitting, shown in Figure 2-13ꢀ The electrical supply
connections are made inside the electrical junction boxꢀ
The power lines then connect to the oven circuits through
safety switches located inside the machinery compart-
ment and each blower motor compartmentꢀ These switches
interrupt electric power to the oven when the Machinery
Compartment Access Panel is opened, OR when either of
the blower or rear shrouds is removedꢀ
NOTE: The electric supply installation must satisfy the
requirements of the appropriate statutory authority, such as the
National Electrical Code (NEC), ANSI/NFPA70, (UꢀSꢀAꢀ); the
Canadian Electrical Code, CSA C22ꢀ2; the Australian Code
AG601; or other applicable regulationsꢀ
Bꢀ Additional Information - Electric Ovens
NOTE: The electric supply connection must meet all national
A 2" (51mm) diaꢀ cutout in the back wall of the machinery
compartment provides access to the electrical supply
connectionsꢀ The actual wiring connections are made at
the terminal block located inside the side compartment of
the ovenꢀ
and local electrical code requirementsꢀ
Check the oven serial plate before making any electric supply
connectionsꢀ Electric supply connections must agree with data
on the oven serial plateꢀ The location of the serial plate is shown
in Figure 1-1 (in Section 1, Description)ꢀ
Using flexible cables for the electric power supply
conductors requires a 2" (51mm) strain-relief fitting (not
furnished with the oven) to enable safe access to the
terminal blockꢀ
A fused disconnect switch or a main circuit breaker (customer
furnished) MUST be installed in the electric supply line for each
oven cavityꢀ It is recommended that this switch/circuit breaker
have lockout/tagout capabilityꢀ
Cꢀ Connection
The supply conductors must be of the size and material (cop-
per) recommendedꢀ Refer to the wiring diagram inside the
machinery compartment of the ovenꢀ Electrical specifications
are also listed on the oven's serial plate and in Table 1-4,
Electrical Specifications (in Section 1, Description)ꢀ
Refer to the wiring diagram inside the machinery
compartment of the oven to determine the correct
connections for the electrical supply linesꢀ Connect the
supply as indicated on the wiring diagramꢀ
The oven requires a ground connection to the oven ground
screwꢀ For gas ovens, the ground screw is located in the
electrical junction box (see Figure 2-13)ꢀ For electric ovens, the
ground screw is located inside the side compartment of the
oven (see Figure 2-14)ꢀ If necessary, have the electrician supply
the ground wireꢀ Do NOT use the wiring conduit or other piping
for ground connections!
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 Agentꢀ
10
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SECTION2-INSTALLATION
Figure 2-13 - Utility Connection Locations for Gas Ovens
Electrical
Junction Box
One per oven
cavity
Strain-relief
fitting
Gas Inlet
One per Single,
Double, Triple,
or Quad Oven
Figure 2-14 - Utility Connection Locations for Electric Ovens
2" (51mm)
cutout for
electrical supply
VIIꢀ GAS SUPPLY
CAUTION
3ꢀ If incoming pressure is over 14” WꢀCꢀ (35mbar), a sepa-
rate regulator MUST be installed in the line BEFORE the
individual shutoff valve for the ovenꢀ
DURINGPRESSURETESTINGNOTEONEOFTHEFOLLOWING:
1ꢀTheovenanditsindividualshutoffvalvemustbediscon-
nected from the gas supply piping system during any
pressure testing of that system at test pressure in excess
of 1/2 psi (3ꢀ45 kPa)ꢀ
WARNING:Topreventdamagetothecontrolvalveregula-
torduringinitialturn-onofgas,itisveryimportanttoopen
the manual shutoff valve very slowlyꢀ
Aftertheinitialgasturn-on, themanualshutoffvalvemust
remainopenexceptduringpressuretestingasoutlinedin
the above steps or when necessary during service main-
tenanceꢀ
2ꢀ The oven must be isolated from the gas supply piping
system by closing its individual manual shutoff valve dur-
inganypressuretestingofthegassupplypipingsystemat
test pressure equal to or less than 1/2 psi (3ꢀ45 kPa)ꢀ
Gas Meter
Aꢀ GasUtilityRough-InRecommendations
•
•
One or two oven cavities: 750 cfh meter
Three or four oven cavities: 1200 cfh meter
The following gas system specifications are STRONGLY
RECOMMENDEDꢀ Deviating from these recommendations
may affect the baking performance of the ovenꢀ
Gas Line
•
•
•
•
DEDICATED LINE from the gas meter to the oven
2-1/2" (63ꢀ5mm) pipe for natural gas
2" (50ꢀ8mm) pipe for propane
Maximum length: 200' (61m)ꢀ Each 90° elbow equals 7'
(2ꢀ13m) of pipeꢀ
11
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SECTION2-INSTALLATION
Bꢀ Connection
plies with the Standard for Quick-Disconnect Devices for Use
With Gas Fuel, ANSI Z21ꢀ41 (in UꢀSꢀAꢀ), or, if applicable, Quick-
Disconnect Devices for Use With Gas Fuel, CAN1-6ꢀ9 (in
Canada)ꢀ
Check the oven’s gas supply requirements before making the
gas utility connectionꢀ Gas supply requirements are listed on
the oven’s serial plate and in Table 1-3, Gas Orifice and
Pressure Specifications (in Section 1, Description)ꢀ
Cꢀ GasConversion
Check the serial plate to determine the type of gas (Propane or
Natural) to be used with the ovenꢀ
Where permitted by local and national codes, it is possible to
convert ovens from natural to propane gas, or from propane to
Refer to the instructions in the gas hose package (included in natural gasꢀ Use the appropriate Middleby Marshall Gas
the Installation Kit) before connecting the gas lineꢀ One gas line
connection method is shown in Figure 2-15; however,
compliance with the applicable standards and regulations is
mandatoryꢀ
Conversion Kit for the specific oven modelꢀ
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 Agentꢀ
Inlet, regulated, and pilot gas pressure readings can be taken
using a “U” tube manometer at the tap locations shown in
Figure 2-16ꢀ
NOTE
The installation must conform with local codes or in the absence
of local codes, with the National Fuel Gas Code, ANSI Z223ꢀ1-
latest editionꢀ
Figure 2-15 - Flexible Gas Hose Installation
To Gas
Supply Pipe
In Australia, the installation must conform with AGA Code
AG601 and with any requirements of the appropriate statutory
authorityꢀ
CANADIAN:
CAN/CGA-B 149ꢀ1 Natural Gas Installation Code
CAN/CGA-B 149ꢀ2 Propane Installation Code
Full-Flow
Gas
Shutoff
Valve
Certain safety code requirements exist for the installation of gas
ovens; refer to the beginning of Section 2 for a list of the
installation standardsꢀ In addition, because the oven is equipped
with casters, the gas line connection shall be made with a
connector that complies with the Standard for Connectors for
Movable Gas Appliances, ANSI Z21ꢀ69 (in UꢀSꢀAꢀ), or, if appli-
cable, Connectors for Movable Gas Appliances, CAN/CGA-6ꢀ16
(in Canada), as well as a quick-disconnect device that com-
90°
Elbow
90°
Elbow
Flexible
Gas Hose
Union OR quick-
disconnect device
Figure 2-16 - Gas Burner and Piping Assembly
Gas line for
other oven
cavities
Inlet pressure
tap (where
incoming gas
pressure is
measured)
Manual
shutoff
valve
Cap for top
oven cavity
Gas Pipe, 1-1/4”
diaE X 54”
(1372mm) L
Modulating
gas valve
Combination Gas
Control Valve
(Safety Regulator)
On/Off Knob
Always leave in
“ON” position
Gas Burner
Nipple, 1-1/4”
diaE X 3”
(76mm) L, NPT
Burner
Blower
Elbow, 90°,
1-1/4” diaE
Pilot pressure tap
(where pilot gas
pressure is measured)
Manifold pressure tap
(where manifold gas
pressure is measured)
12
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SECTION3-OPERATION
Iꢀ LOCATION AND DESCRIPTION OF CONTROLS
Figꢀ 3-1 - Control Panel
EE
DE
Digital Temperature
Conveyor Speed
) controller(s)
(
) controller
(
AE
BE
CE
"BLOWER"
) switch
"HEAT"
"CONVEYOR"
(
(
) switch
(
) switch
Dꢀ
Eꢀ
Aꢀ
"BLOWER" Switch: Turns the blowers and
cooling fans on and offꢀ The HEAT Switch has
no effect unless the BLOWER Switch is in the
“ON” positionꢀ
Conveyor Speed Controller: Adjusts and dis-
plays the bake timeꢀ Single-belt ovens have one
controllerꢀ Split belt ovens have one controller
for each conveyor belt, labeled "FRONT" and
"BACKꢀ"
Bꢀ
Cꢀ
"HEAT" Switch: Allows the burner or heating
elements, as appropriate for the oven model, to
activateꢀ Activation is determined by the set-
tings on the Digital Temperature Controllerꢀ
Digital Temperature Controller: Continuously
monitors the oven temperatureꢀ Settings on the
Digital Temperture Controller control the activa-
tion of the burner or heating elementsꢀ Keypad
controls allow the operator to select the cooking
temperature and monitor oven operationꢀ
"CONVEYOR"Switch: Turnstheconveyordrive
motor on and offꢀ
NOT SHOWN:
Fꢀ MachineryCompartmentAccessPanelSafetySwitches:
Disconnect electrical power to the controls and the blowers
when the machinery compartment access panel is openedꢀ
The panel should only be opened by authorized service
personnelꢀ
13
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SECTION3-OPERATION
7ꢀ Waitfortheoventoheattothesetpointtemperatureꢀ Higher
setpoint temperatures will require a longer waitꢀ The oven
can reach a temperature of 500°F (232°C) in approximately
5 minutesꢀ
IIꢀ NORMAL OPERATION - STEP-BY-STEP
Aꢀ DAILYSTARTUPPROCEDURE
1ꢀ Check that the circuit breaker/fused disconnect is in the on
positionꢀ Check that the window is closedꢀ
8ꢀ (Optional)PresstheTem-
perature ( ) key to show
2ꢀ Turnthe"BLOWER" (
)
the Actual Temperature
in the display, and wait
wait
for
switch to the “ON” ("I")
positionꢀ
for the "ACTUAL TEMP"
light to turn onꢀ This al-
lows you to monitor the
oven temperature as it
rises to the setpointꢀ
3ꢀ Turn the "CONVEYOR"
(
) switch to the “ON”
9ꢀ Allow the oven to preheat for 10 minutes after it has reached
the set point temperatureꢀ
("I") positionꢀ
Bꢀ DAILYSHUTDOWNPROCEDURE
1ꢀ Turnthe"HEAT"( )and
"BLOWER" ( ) swit-
ches to the "OFF" ("O")
4ꢀ If necessary, adjust the
conveyor speed setting
by pressing the
or
+
positionꢀ Note that the
pushbuttons on the con-
veyor speed controller to
change the displayed
bake timeꢀ
blowers will remain in op-
eration until the oven has
cooled to below 200°F
(93°C)ꢀ
or
2ꢀ Make certain that there
are no products left on
the conveyor inside the
ovenꢀ Turn the "CON-
5ꢀ Adjust the temperature
controller to a desired set
temperature, if neces-
saryꢀ
wait
for
VEYOR" (
) switch to
the "OFF" ("O") positionꢀ
+
•
Press the Set Point
and Unlock keys at
the same timeꢀ Wait
forthe"SETPT"light
to turn onꢀ
3ꢀ Open the window to allow the oven to cool fasterꢀ
4ꢀ After the oven has cooled and the blowers have turned off,
switch the circuit breaker/fused disconnect to the off posi-
tionꢀ
•
Press the Up Arrow
and Down Arrow
Keys as necessary
to adjust the set-
pointꢀ
IMPORTANT
or
On gas ovens, if the "HEAT ON" light will not illuminate, OR
if the oven does not heat, the gas burner may not have litꢀ
Turn the "HEAT" ( ), "BLOWER" ( ), and "CONVEYOR"
(
) switches to the "OFF" ("O") positionꢀ Wait for AT
LEAST FIVE MINUTES before restarting the ovenꢀ Then,
repeat the Daily Startup procedureꢀ
6ꢀ Turn the "HEAT" (
)
switch to the "ON" ("I")
position, and wait for the
"HEAT ON" light to turn
onꢀ
CAUTION
In case of power failure, turn all switches to the “OFF” ("O")
position, open the oven window, and remove the productꢀ
After the power has been restored, perform the normal
startup procedureꢀ IF THE OVEN WAS SWITCHED OFF
FOR LESS THAN 5 MINUTES, WAIT FOR AT LEAST FIVE
MINUTES BEFORE RESTARTING THE OVENꢀ
wait
for
Theburnerwillnotoperateandgaswillnotflowthrough
theburnerwithoutelectricpowerꢀ Noattemptshouldbe
made to operate the oven during a power failureꢀ
14
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SECTION3-OPERATION
IIIꢀ QUICK REFERENCE: DIGITAL TEMPERATURE CONTROLLER
Display
"HEAT ON" Light
Shows the Set Point or
the Actual Tempera-
ture in degrees Fahr-
enheit (F) or Celsius
(C)ꢀ
Lights when the
burner or heating ele-
ments, as appropriate
for the oven model,
are in operationꢀ
"SP LOCK" Light
Lights when the set
point is locked out
from changesꢀ This
setting can only be
changed by service
personnelꢀ
"SET PT" (setpoint)
Light
Lights when the set
point is shown in the
displayꢀ
OVERTEMP Light
"ACTUAL TEMP"
Light
Lights when the
Actual Tempera-
ture is shown in
the displayꢀ
Lights when the oven
temperature is greater
than 650°F (343°C)ꢀ
Refer to Quick Refer-
ence: Troubleshoot-
ing in this sectionꢀ
Service Key
For use by ser-
vice personnel
onlyꢀ
Temperature Key
Press this key once to
view the Actual Tem-
perature in the Dis-
playꢀ
Set Point Key
Unlock Key
Press this key together
with the Unlock Key to
allow the Set Point to
be changedꢀ
Changes can only be
made for 60 secondsꢀ
Press this key together
with the Set Point Key
to allow the Set Point
Up Arrow and Down Arrow
Keys
to
be
changedꢀ
Changes can only be
made for 60 secondsꢀ
Press these keys to adjust
the Set Point up or downꢀ If
the Set Point will not
change, refer to Set Point
Key and Unlock Key in this
sectionꢀ
15
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SECTION3-OPERATION
IVꢀ QUICK REFERENCE: TROUBLESHOOTING
SYMPTOM
PROBLEM
SOLUTION
The oven temperature ex-
ceeded650°F(343°C), and
the burner or heating ele-
ments were automatically
shut downꢀ
•
Follow the procedures under Daily Shutdown Procedures in
this section to shut down the ovenꢀ Contact your Middleby
MarshallAuthorizedServiceAgenttodetermineandcorrectthe
cause of the condition to prevent damage to the ovenꢀ
light is lit, food product is
undercooked
Oven will not
turn on at all
Electrical power may not be
reaching the oven, or the
controls may be set incor-
rectlyꢀ
•
•
Check that the circuit breaker/fused disconnect is turned onꢀ
Check that the "BLOWER" ( ) Switch is in the “ON” ("I")
positionꢀ The burner cannot engage until the blowers are in
operationꢀ
Oven shuts down shortly
after it is turned on
(gas ovens only)
The gas burner did not light
within 90 seconds of turn-
ing the "HEAT" ( ) Switch
to the “ON” ("I") positionꢀ
This automatically en-
gages a safety lockout
modeꢀ
•
Turn the "HEAT" ( ), "BLOWER" ( ), and "CONVEYOR"
(
)switches to the "OFF" ("O") positionꢀ
•
•
Wait for AT LEAST FIVE MINUTES before restarting the ovenꢀ
Repeat the Daily Startup procedureꢀ
The oven did not reach
200°F(93°C)within15min-
utesofstartup,andtheoven
has stopped heatingꢀ
•
Turn the "HEAT" ( ), "BLOWER" ( ), and "CONVEYOR"
(
)switches to the "OFF" ("O") positionꢀ
•
•
Wait for AT LEAST FIVE MINUTES before restarting the ovenꢀ
Repeat the Daily Startup procedureꢀ
appears in display,
oven is not heating
Controls may be set incor-
rectlyꢀ
•
•
Check that the Set Point is correctly setꢀ
Oven will not heat
Checkthatboththe"BLOWER"( ) and"HEAT"( )Switches
are in the “ON” ("I") positionꢀ
•
If the oven still will not heat,turn the "HEAT" ( ), "BLOWER"
(
), and "CONVEYOR" (
)switches to the "OFF" ("O")
positionꢀ
•
•
Wait for AT LEAST FIVE MINUTES before restarting the ovenꢀ
Repeat the Daily Startup procedureꢀ Check that the Set Point
is above 200°F (93°C)ꢀ
Oven is operating, but
little or no air is blowing
from air fingers
Air fingers may have been
reassembled incorrectly
after cleaningꢀ
•
•
Turn the oven off, and allow it to coolꢀ Disconnect electrical
power to the ovenꢀ
Refer to Section 4, Maintenance, for instructions on reassem-
bling the air fingersꢀ
Conveyor moves with a
jerky motion, or will not
move at all
Conveyor may be jammed
on an object in the oven, or
conveyor belt or drive chain
tension may be incorrectꢀ
•
Turn the oven off, and allow it to coolꢀ Disconnect electrical
power to the ovenꢀ
•
•
Check if the conveyor is blocked by an object inside the ovenꢀ
Refer to Section 4, Maintenance, for instructions on checking
the conveyor and drive chain tensionꢀ
Food products are
overcooked or
undercookedꢀ
Controls may be set incor-
rectlyꢀ
•
Check that the set temperature and bake time settings are
correctꢀ
IFTHESESTEPSFAILTORESOLVETHEPROBLEM,CONTACTYOURLOCALMIDDLEBYMARSHALL
AUTHORIZED SERVICE AGENTꢀ A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVENꢀ
16
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SECTION4-MAINTENANCE
WARNING
Before ANY cleaning or servicing of the oven, perform the following procedure:
1ꢀ Switch off the oven and allow it to coolꢀ Do NOT service the oven while it is warmꢀ
2ꢀ Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the ovenꢀ
3ꢀ If it is necessary to move the oven for cleaning or servicing, disconnect the gas supply connection before moving the ovenꢀ
When all cleaning and servicing is complete:
the oven, reconnect it at this timeꢀ
5ꢀ For gas ovens, turn on the full-flow gas safety valveꢀ Test
the gas line connections for leaks using approved leak
test substances or thick soap sudsꢀ
1ꢀ If the oven was moved for servicing, return the oven to its
original locationꢀ
2ꢀ For gas ovens, reconnect the gas supplyꢀ
3ꢀ Reconnect the electrical supplyꢀ
6ꢀ Turn on the electric supply circuit breaker(s)ꢀ
7ꢀ Perform the normal startup procedureꢀ
4ꢀ If the restraint cable was disconnected to clean or service
WARNING
Possibility of injury from moving parts and electrical shock exists in this ovenꢀ Switch off and lockout/tagout the electric supply
BEFORE beginning to disassemble, clean, or service any ovenꢀ Never disassemble or clean an oven with the BLOWER (
)
switch or any other circuit of the oven switched onꢀ
CAUTION
NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this ovenꢀ DO NOT use excessive
amounts of water, to avoid saturating the oven insulationꢀ DO NOT use a caustic oven cleaner, which can damage the
aluminized bake chamber surfacesꢀ
NOTE
ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized
Service Agentꢀ It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this
section be performed ONLY by a Middleby Marshall Authorized Service Agentꢀ
Iꢀ MAINTENANCE - DAILY
Figure4-1-FrontCoolingFans
Aꢀ Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Sectionꢀ
Bꢀ Clean the outside of the oven with a soft cloth and mild
Foam filter
detergentꢀ
Cꢀ Clean the front cooling fans, as follows:
• Snapofftheprotectivegrille, andwipeitcleanwithaclothꢀ
See Figure 4-1ꢀ
• Remove the foam filter and inspect itꢀ If it is dusty, shake
it brisklyꢀ If dirt or grease is present on the filter, wash it
in warm, soapy waterꢀ Rinse the filter, squeeze it to
remove as much of the water as possible, and then set
it aside to dry thoroughly before reinstallationꢀ
Protective grill
• Once the filter is dry, reinstall the filter and grilleꢀ
Dꢀ Clean the motor shroud and rear grills using a stiff nylon
brushꢀ Refer to Figure 4-2 for the locations of the grillsꢀ
Eꢀ Check that ALL cooling fans are operating properlyꢀ
Figure 4-2 - Rear Grills and Motor Shroud Grill
CAUTION
Grill on top of
If a cooling fan is not operating correctly, it must be replaced
IMMEDIATELYꢀ Operating the oven without adequate
cooling can damage the oven's internal componentsꢀ
conveyor motor
shroud
Fꢀ Clean the conveyor belts with a stiff nylon brushꢀ This is
more easily accomplished by allowing the conveyor to run
while you stand at the exit end of the conveyorꢀ Then, brush
the crumbs off the conveyor as it movesꢀ
Gꢀ Remove and clean the crumb traysꢀ When reinstalling the
trays, refer to Figure 2-12 (in Section 2, Installation)ꢀ
Grills on top
and bottom
of rear
Grills on end
shrouds (4)
Grills on inside
face of rear
shrouds (2 - gas
ovens only)
Grills on rear of
rear shrouds (2)
shrouds (4)
17
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SECTION4-MAINTENANCE
IIꢀ MAINTENANCE - MONTHLY
NOTE
Figure 4-3 - Removing Air Fingers and Plates
When removing the conveyor, refer to Figure 2-9 (in Section 2,
Installation)ꢀ
Aꢀ Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Sectionꢀ
Bꢀ Remove the crumb trays and drive motor shroud from the
ovenꢀ
Cꢀ Liftthedriveendoftheconveyorslightly, andpushitforward
into the ovenꢀ This removes the tension from the drive
chainꢀ Then, remove the drive chain from the conveyor
sprocketꢀ
Dꢀ Slide the conveyor out of the oven, folding it as it is removedꢀ
NOTE
Split belt conveyors can only be removed from the end of
the oven with the drive motorꢀ
Single-belt conveyor assemblies may be removed from
either end of the ovenꢀ If it is to be removed from the end
of the oven without the drive motor, remove the drive motor
sprocket as described in the Conveyor Installation instruc-
tions (in Section 2, Installation)ꢀ
Figure 4-4 - Disassembling the Air Fingers
Eꢀ Remove the end plugs from the ovenꢀ The end plugs are
shown in Figure 1-1 (in Section 1, Description)ꢀ
Fꢀ Slide the air fingers and blank plates out of the oven, as
shown in Figure 4-3ꢀ AS EACH FINGER OR PLATE IS
REMOVED, WRITE A "LOCATION CODE" ON IT WITH A
MARKER to make sure that it can be reinstalled correctlyꢀ
Manifold
Inner plate
Outer Plate
Example of markings:
(Top Row)
T1 T2 T3 T4 T5 T6
B1 B2 B3 B4 B5 B6
(Bottom Row)
Gꢀ Disassemble the air fingers as shown in Figure 4-4ꢀ AS
EACH FINGER IS DISASSEMBLED, WRITE THE "LOCA-
TION CODE" FOR THE FINGER ON ALL THREE OF ITS
PIECESꢀ This will help you in correctly reassembling the
air fingersꢀ
2
Pull outer plate
straight up
3
and off
Swing ends of inner plate and
manifold apart
CAUTION
Incorrect reassembly of the air fingers will change the
baking properties of the ovenꢀ
Hꢀ Clean the air finger components and the interior of the
baking chamber using a vacuum cleaner and a damp clothꢀ
Refer to the boxed warnings at the beginning of this Section
for cleaning precautionsꢀ
Iꢀ
Reassemble the air fingersꢀ Then, replace them in the
oven, using the "location code" as a guideꢀ
Jꢀ Replace the end plugs on the ovenꢀ
4
Kꢀ Reassembletheconveyorintotheovenꢀ Ifthedrivesprocket
was removed when installing the conveyor, replace it at this
timeꢀ
Pull inner plate
upwards, and
then away from
manifold
Lꢀ Reattach the drive chainꢀ
Mꢀ Check the tension of the conveyor belt as shown in Figure
2-10 (in Section 2, Installation)ꢀ The belt should lift between
3-4" (75-100mm)ꢀ DO NOT OVERTIGHTEN THE CON-
VEYOR BELTꢀ If necessary, the belt tension can be ad-
justed by turning the conveyor adjustment screws, located
at the idler (right) end of the conveyorꢀ
1
Step on lip of manifold
Nꢀ Replace the crumb trays and drive motor shroudꢀ
18
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SECTION4-MAINTENANCE
16 Check the tension of the conveyor beltꢀ The belt should
lift between 3-4" (75-100mm)ꢀ If necessary, adjust the
belttensionbyturningtheconveyoradjustmentscrewsꢀ
IIIꢀ MAINTENANCE - EVERY 3 MONTHS
Aꢀ Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Sectionꢀ
Bꢀ Vacuum both of the blower motors, and their surrounding
compartments, using a shop vacuumꢀ
Cꢀ Tighten all electrical control terminal screwsꢀ
Dꢀ Split Belt Disassembly and Cleaning
Figure 4-5 - Split Belt Idler Shaft
For split belt ovens ONLY, disassemble, clean and lubri-
cate the conveyor shaft components as described belowꢀ
1ꢀ Remove the motor shroud, conveyor extensions, and
conveyor as described in Part II, Monthly Maintenanceꢀ
Conveyor
adjustment
screw
2ꢀ Remove the master links from each conveyor beltꢀ
Then, roll the belts up along the length of the conveyor
to remove them from the frameꢀ
3ꢀ Remove the two conveyor adjustment screws from the
idler end of the conveyor frame, as shown in Figure 4-
5ꢀ
4ꢀ Remove the idler shaft assembly from the conveyorꢀ
5ꢀ Pull apart the two sections of the idler shaftꢀ Clean the
shafts thoroughly using a ragꢀ Then, lubricate both the
extended shaft and the interior of the hollow shaft using
an FDA-approved light food-grade lubricantꢀ
Figure 4-6 - Split Belt Drive Shaft
CAUTION
DO NOT lubricate the shafts using WD40 or a similar
productꢀ This can cause the shafts to wear rapidlyꢀ
6ꢀ Before reassembling the shafts into the conveyor
frame, check that they are oriented properlyꢀ Remem-
ber that unequal-width split belt ovens should AL-
WAYS have the narrower belt at the front of the ovenꢀ
Locking collar
7ꢀ Reassemble the idler shaft into the conveyorꢀ Make
sure that the bronze washer is in place between the two
sections of the shaftꢀ See Figure 4-7ꢀ
8ꢀ Replace the conveyor adjustment screws as shown in
Figure 4-5ꢀ To allow the conveyor belt to be reinstalled
later, do not tighten the screws at this timeꢀ
9ꢀ Loosen the set screw on both of the conveyor drive
sprocketsꢀ Then, remove the sprockets from the shaftꢀ
10ꢀ Loosen the locking collar set screw, as shown in
Figure 4-6ꢀ
Figure 4-7 - Washer and Spacer
11ꢀ Push the drive shaft to the right, then lift it free of the
conveyor frameꢀ Then, disassemble and lubricate the
two sections of the drive shaft as described in Step 5ꢀ
12ꢀ Before reassembling the shafts into the conveyor
frame, check that they are oriented properlyꢀ Remem-
ber that unequal-width split belt ovens should AL-
WAYS have the narrower belt at the front of the ovenꢀ
Bronze washer on
BOTH idler and
drive shafts
13ꢀ Reassemble the drive shaft into the conveyorꢀ Check
that the nylon spacer is in place, as shown in Figure 4-
7ꢀ Also, check that the bronze washer is in place
between the two sections of the shaftꢀ
Nylon spacer
on drive shaft
ONLY
14ꢀ Replace the drive sprocketsꢀ Reassemble the belts
and master links onto the conveyor, and replace the
conveyor in the ovenꢀ
15ꢀ Reassemble the motor shroud and conveyor exten-
sions onto the ovenꢀ
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SECTION4-MAINTENANCE
Eꢀ Blower Belts
Figure 4-8 - Rear Shrouds and Guard Plates
1ꢀ To gain access to each blower belt compartment,
remove the four screws shown in Figure 4-8ꢀ Then, lift
the rear shroud off its hangersꢀ
End shroud screws
(3 per shroud - 1
rear, 2 front)
If access to the blower motors is required, remove the
threemountingscrews(twoonthefrontofeachshroud,
one on the rear)ꢀ Then, lift the end shroud straight up
and off its hangersꢀ The end shrouds can only be
removed AFTER the rear shrouds have been removedꢀ
2ꢀ Check each blower belt for at least 1" (25mm) deflec-
tion at the center, and for cracking or excessive wearꢀ
See Figure 4-9ꢀ Overtightening the belt will cause
premature bearing failure and possible vibrationsꢀ
3ꢀ If necessary, adjust the tension of the belt by loosening
the four motor mounting boltsꢀ Reposition the motor
as necessary until the correct deflection is reached,
then tighten the motor mounting boltsꢀ
End shroud -
remove SECOND (if
necessary)3
Access to blower
motor
Rear shroud screws
Rear shroud -
removeFIRST3
Access to bearing
and fan belt
(4 per shroud for gas
ovens, 5 per shroud
for electric ovens)
Fꢀ Lubricating the Blower Fan Bearings
1ꢀ Use a grease gun to lubricate the main blower fan shaft
bearings, as shown in Figure 4-10ꢀ
Figure 4-9 - Fan Belt Tension
When lubricating the bearings:
At least 1" (25mm)
deflection
•
•
Use a high-quality NLGI #2, lithium soap grease
with petroleum oil, such as Middleby P/N 17110-
0015ꢀ
Add the grease slowly until a small bead of grease
is present at the sealsꢀ AVOID OVERGREASINGꢀ
Excessive greasing may cause harm to the
bearingꢀ
2ꢀ Manually turn the blower shaft by pulling on the belt to
purge the greaseꢀ
3ꢀ Wipe off any excess grease on and around the bear-
ingsꢀ
4ꢀ Replace the shrouds onto the ovenꢀ
Fan not shown -
NOTE
see above
The oven will not operate unless ALL of the motor and
rear shrouds are in placeꢀ
To adjust belt
tension, loosen 4
bolts and
IVꢀ MAINTENANCE - EVERY 6 MONTHS
Aꢀ Check that the oven is cool and the power is disconnected,
as described in the warning at the beginning of this Sectionꢀ
reposition motor
Bꢀ Check for excessive wear on the conveyor drive motor
brushesꢀ The brushes should be replaced if they have worn
to less than 1/4" (6ꢀ4mm) in lengthꢀ Be sure to replace the
brushes in exactly the same positionꢀ
Figure 4-10 - Lubricating the Bearings
Cꢀ For gas ovens, clean and inspect the burner nozzle and
electrode assemblyꢀ
Grease fittings
(1 per bearing, 4
total)
Dꢀ Check (and clean, if necessary) the oven venting systemꢀ
Eꢀ Check the conveyor drive shaft bushings and spacersꢀ
Replace the components if they are wornꢀ
20
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SECTION4-MAINTENANCE
Vꢀ KEY SPARE PARTS KIT - Available separatelyꢀ See Figure 4-11ꢀ
Aꢀ Gas Ovens
ItemQtyꢀ Part Noꢀ
Bꢀ ElectricOvens
Description
ItemQtyꢀ
Part Noꢀ
36939
Description
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
36939
27384-0008
22450-0052
37337
Kit, Digital Temperature Controller
Motor, Conveyor Drive
Brushes, Drive Motor
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Kit, Digital Temperature Controller
Motor, Conveyor Drive
27384-0008
22450-0052
37337
3
3
Brushes, Drive Motor
4
Kit, Conveyor Speed Controller
Assembly, Pickup, Conveyor Drive
Kit, Thermocouple
4
Kit, Conveyor Speed Controller
Assembly, Pickup, Conveyor Drive
Kit, Thermocouple
5
27170-0263
33984
5
27170-0263
33984
6
6
7
97525
Fan,Cooling
7
97525
Fan,Cooling
8
27381-0069
39530
Motor, Blower, 1 HP
8
27381-0069
33983
Motor, Blower, 1 HP
9
Air Switch
14
16a
16b
16c
16d
17
18
19
20
21a
21b
High limit control module, 240V
Heating element, 208V
10
11
12
13
14
15
42810-0114
38811
Kit,IgnitionModule
43337
Assembly, Burner Blower/Motor
Valve, Modulating Gas, 1/2"
Amplifier, Modulating Valve
High limit control module, 240V
Transformer, 240Vp:24Vs, 25VA
44525
Heating element, 230V
41647
44526
Heating element, 380V
31651
44527
Heating element, 480V
33983
28041-0008
31504
Contactor
41872
Transformer, 230Vp:120Vs, 200VA
Contactor
44549
35018
Circuit breaker block, 3-pole, 50A
Controller (380V & 480V ovens)
Controller (208V, 230V, & 240V ovens)
44568
44914
1
Figꢀ 4-11 - Key Spare Parts Kit
5
4
3
2
7
6
10
9
8
11
12
15
14
13
16
20
19
18
17
21
21
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SECTION5-ELECTRICALWIRINGDIAGRAMS
24V AC
INPUT
4-20V DC
OUTPUT
E
WHT
RED
BLACK
WHITE
RED
BLACK
WHITE
RED
BLUE
BRN
BLUE
BRN
WHITE
RED
E
WHITE
E
RED
E
WHITE
RED
E
WHITE
RED
22
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SECTION5-ELECTRICALWIRINGDIAGRAMS
23
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SECTION5-ELECTRICALWIRINGDIAGRAMS
MiddlebyCookingSystemsGroup•1400ToastmasterDrive•Elgin,IL60120•USA•(847)741-3300•FAX(847)741-4406
24-HourServiceHotline: 1-(800)-238-8444
wwwꢀmiddlebyꢀcom
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