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iv

NOTE

Wiring Diagrams are in Section 5 of this Manual.

The diagram for each oven is also on the lower

inner surface of its Control Console.

Page

SECTION 1 – DESCRIPTION

............................................ 1

I.

OVEN USES ............................................................ 1

II. OVEN COMPONENTS ............................................ 1

A. Conveyor Motor Drive ................................... 1
B. Crumb Pans .................................................. 1
C. Conveyor ....................................................... 1
D. End Plugs ...................................................... 1
E. Eyebrows ...................................................... 1
F. Window ......................................................... 1
G. Machinery Compartment Access Panel ........ 1
H. Serial Plate .................................................... 1
I. Control Panel ................................................ 1
J. Photo Cell ..................................................... 1
K. Gas Burner .................................................... 1
L. Blowers ......................................................... 1
M. Air Fingers ..................................................... 1

III. OVEN SPECIFICATIONS ........................................ 2

A. Dimensions ................................................... 2
B. General Specifications .................................. 2
C. Electrical Specifications for

PS840 Gas Ovens ........................................ 2

D. Gas Orifice and Pressure Specifications

for PS840 Gas Ovens ................................... 2

SECTION 2 – INSTALLATION

........................................... 3

I.

BASE PAD KIT ......................................................... 4

II. INSTALLATION KIT ................................................. 6
III. VENTILATION SYSTEM ........................................ 12

A. Requirements .............................................. 12
B. Recommendations ...................................... 12
C. Other Ventilation 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 SUPPLY .......................................... 16

Connection ....................................................... 17

VII. GAS SUPPLY ........................................................ 17

A. Gas Utility Rough-In Recommendations ..... 17
B. Connection .................................................. 18
C. Gas Conversion .......................................... 18
D. Propane Conversion ................................... 18
E. Adjusting the Maximum Pressure Setting ... 18
F. Adjusting the Minimum Pressure Setting .... 19
G. Checkout ..................................................... 19
H. Maintenance ............................................... 19

Page

SECTION 3 – OPERATION

.............................................. 20

I.

LOCATION AND DESCRIPTION OF CONTROLS 20

II. NORMAL OPERATION, STEP-BY-STEP ................ 21

A. Main Screen ................................................ 21
B. Daily Startup Procedure .............................. 21
C. Daily Shutdown Procedure ......................... 21

III. QUICK REFERENCE: TROUBLESHOOTING ...... 22
IV. SCREEN ALERTS ................................................. 22

SECTION 4 – MAINTENANCE

........................................ 23

I.

MAINTENANCE – DAILY ....................................... 23

II. MAINTENANCE – MONTHLY ............................... 24
III. MAINTENANCE – EVERY 3 MONTHS ................. 25
IV. MAINTENANCE – EVERY 6 MONTHS ................  26
V. KEY SPARE PARTS KIT ....................................... 27

SECTION 5 – ELECTRICAL WIRING DIAGRAM ............

28

I.

WIRING DIAGRAM, 840 GAS OVEN, 208/240V,
50/60 Hz, 1 Ph ....................................................... 28

TABLE OF CONTENTS

Summary of Contents for PS840 Series

Page 1: ...mark of Middleby Marshall Inc All rights reserved Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 847 741 3300 FAX 847 741 4406 PS840 Series Gas Ovens P N 60249 May 2009 Rev D PS8...

Page 2: ...CINITY OF THIS OR ANY OTHER APPLIANCE WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operation and maintenan...

Page 3: ...ALLY 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 exclusive remedy for a...

Page 4: ...s 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 SUPPLY 16 Connect...

Page 5: ...roducts inside the baking chamber G Machinery Compartment Access Panel Allows access to the oven s interior and control components No user serviceable parts are located in the machinery compart ment H...

Page 6: ...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 specifications for PS840G...

Page 7: ...e 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 loca...

Page 8: ...DoubleOven TripleOven Installation Option Base w OptionBase w OptionBase w TYPE OF INSTALLATION Kit 15 Legs 6 Legs Casters Top Casters Top Casters Top Kit Kit Kit P N61452 P N61123 P N61457 P N61458...

Page 9: ...P N59726 PS840 Single Gas Oven 1 1 PS840 Double Gas Oven 2 1 PS840 Triple Gas Oven 3 1 3 2 4 6 5 1 PARTS LIST FOR SERIES PS840 GAS OVEN INSTALLATION KIT P N 61033 Two required for double oven Three re...

Page 10: ...6 COMPLETE BASE WELDMENT 2 4 37900 0024 TOP PLATE LEG WELDMENT 3 2 22290 0009 SWIVEL CASTER W BRAKE FLAT PLATE 4 2 22290 0010 SWIVEL CASTER FLAT PLATE 5 32 2000531 3 8 16 1 HEX SCREW SST 6 32 21416 00...

Page 11: ...87 COMPLETE BASE WELDMENT 2 4 37900 0024 TOP PLATE LEG WELDMENT 3 2 22290 0009 SWIVEL CASTER W BRAKE FLAT PLATE 4 2 22290 0010 SWIVEL CASTER FLAT PLATE 5 32 2000531 3 8 16 1 HEX SCREW SST 6 32 21416 0...

Page 12: ...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 TR...

Page 13: ...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 TR...

Page 14: ...PLIT 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 WASHER 14 2 5967...

Page 15: ...PLIT 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 WASHER 14 2 5967...

Page 16: ...rom extreme seasonal hot and cold tempera tures 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 wi...

Page 17: ...s supplied in the Installation Kit The locking casters should be installed at the FRONT of the oven The non locking casters should be installed at the REAR of the oven 4 Install the lower oven cavity...

Page 18: ...ng 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 with casters a res...

Page 19: ...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 conveyor belt as...

Page 20: ...the two screws securing the photo eye assembly to the control box Remove the four nuts securingthephotoeyetothehousing Rotatethephotoeye180 degrees and resecure the photo eye with the four nuts On th...

Page 21: ...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 17 Figure 2 17 Utility...

Page 22: ...all start ups conversions and service work to be per formed by a Middleby Authorized Service Agent D PS840 Propane Conversion Two items have to be changed to change the oven to LP 1 Replace main orifi...

Page 23: ...ise to decrease pressure until the desired minimum outlet pressure is obtained 6 Check if main burner lights easily and reliable at minimum pressure 7 Reconnect pressure feedback connection if appcabl...

Page 24: ...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 Level Indicato...

Page 25: ...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 allows t...

Page 26: ...LEM 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 detected a...

Page 27: ...ct 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 cable was disconn...

Page 28: ...4 3 AS EACH FINGERISDISASSEMBLED WRITETHE LOCATIONCODE FORTHEFINGERONALLTHREEOFITSPIECES Thiswill help you in correctly reassembling the air fingers CAUTION Incorrectreassemblyoftheairfingerswillchan...

Page 29: ...set screw on both of the conveyor drive sprockets Then remove the sprockets from the shaft 11 Check the conveyor configuration as follows High speed conveyors are equipped with large flange bearings a...

Page 30: ...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 motor position and be...

Page 31: ...1 60598 Air Switch 10 1 57288 Motor Blower 11 1 50239 Ignition Module 12 1 60679 Assy Valve Gas Modulating 13 1 60671 Board Signal Cond 0 15VDC 14 1 33983 High Limit Control Module 240V 15 2 32108 Tra...

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

Page 33: ...29 NOTES...

Page 34: ...30 NOTES...

Page 35: ...31 NOTES...

Page 36: ...njury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment NOTICE During the warranty period ALL parts replacement and servici...

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