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II. NORMAL OPERATION - STEP-BY-STEP-

A. Daily Startup Procedure

1.

Check that the circuit breaker/fused disconnect is in the On
position. Check that the window is closed. The touch panel
display should be lit.

2.

Adjust the conveyor to the desired bake time.

3.

Press the temperature button to display right and left hand
oven settings. Set temperatures as desired.

4.

Press the ON button to activate the oven. The conveyor will
not run, until the oven temperature has reached the set
points.

B. Daily Shutdown Procedure

1.

Make certain there are no products left on the conveyor in
the oven.

2.

Press the ON square to turn the oven off.

3.

Open the window to allow the oven to cool faster.

4.

After the oven has cooled and the blowers have turned off, the
circuit breaker/fused disconnect may be turned off.

Quick Reference – Touch Screen Controller

A. Main Screen

1.

On/Off button - Used to turn oven On and Off.

2.

Conveyor speed - Pressing on either the minutes or
seconds allows a new value to be input for the conveyor
speed. Split belt ovens have two inputs (front and rear
belts).

3.

Oven temperature - Pressing on the set temperature shifts
the user to the oven temperature set point/indicator screen.

4.

Energy level indicators - Indicators to either side of the
screen indicate the energy input to that side of the oven.

5.

Message bar - Indicates various messages pertaining to
current oven conditions.

B. Oven Temperature/Set Point/Indicator Screen

1.

Right actual temperature - Indicates current average tem-
perature of the right side of the oven.

2.

Left actual temperature - Indicates 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
the user to adjust the set point for the right side of the oven.

4.

Left Set point temperature - Pressing on this value allows
the user to adjust the set point for the left side of the oven.

5.

Exit - Returns to the main screen.

C. Energy Modes

Energy Mode One

 - This mode is automatic, and starts (bake

time +1 minute) after the last product has entered the oven. In
this mode, the main oven blowers will lower to 1500 RPM, while
the oven maintains temperature and belt speed.

Energy Mode Two

 - The oven lowers its set point by 100° F, and

stops the belt. Anytime that the oven is more than 10 degrees
over its set point, the ovens will completely shut off, allowing the
oven to cool. The main blowers will continue to run at 1500 RPM
in this mode. Placing any article on the input belt will cause
normal operation of the oven to resume, and bring the set point
back to its original level. The belt will resume operation once
both sides of the oven are within 5° F of the set point.

Energy Mode Three

 - The oven will turn off completely and

shut off the circulation blowers once the oven temperature has
dropped below 200° F. Placing any article on the input belt will
cause normal operation of the oven to resume, and bring the set
point back to its original level. The belt will resume operation
once both sides of the over are within 5° F of the set point.

Energy Mode Four

 - This is a complete oven shut down.

Placing anything on the belt will NOT return the oven to
Operation. The ON button on the main screen has to be pressed
to restart the oven.

Summary of Contents for PS840E

Page 1: ...leby Marshall Inc All rights reserved Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 847 741 3300 FAX 847 741 4406 PS840 Series Electric Ovens P N 60253 November 18 2008 Rev B PS...

Page 2: ...ing 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...

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: ...Stacking 13 C Restraint Cable Installation 14 D Conveyor Installation 15 E Standoff Installation 15 V FINAL ASSEMBLY 16 VI ELECTRICAL SUPPLY 17 Connection 17 UTILITY ROUGH IN DIMENSIONS AND POSITIONI...

Page 5: ...ment F Window 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 serviceable par...

Page 6: ...kW hr 92 128 BTU 23 216 kcal Maximum Operation Temperature 600 F 315 C Air Blowers Two Blowers at 1900 RPM Warmup Time 15 min SERIES PS840 ELECTRICAL SPECIFICATIONS Main Blower Control Circuit Phase F...

Page 7: ...ion 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 operati...

Page 8: ...M 5 1 51054 ASSY HANDLE DOOR Figure 2 1A PS840 Series Electric Oven Installation Parts 4 PS840 24 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT PS840 PS840 PS840 PS840 Electric Oven Single Oven Double...

Page 9: ...N59725 P N59726 PS840 Single Electric Oven 1 1 PS840 Double Electric Oven 2 1 PS840 Triple Electric Oven 3 1 1 2 3 5 4 PARTS LIST FOR SERIES PS840 ELECTRIC OVEN INSTALLATION KIT P N 49810 0009 Two req...

Page 10: ...26 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 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: ...trimental effects can result from 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 P...

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: ...install the top oven cavity 3 Install 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 Insta...

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: ...ack onto the frame in thereversedirection andreinstallthemasterlinks Replacethe conveyor assembly in the oven RESETTING DIRECTION JUMPER Locate Jumper P1 on the conveyor control board Move jumper from...

Page 21: ...FOR ELECTRICALLY HEATED OVENS Power requirements for electrically heated ovens are usually 208 240VAC 3 phase 4 wire 3 hot 1 ground although ovens built for export can have power requirements of 380V...

Page 22: ...t 3 pole 4 wire system per oven 3 hot 1 grd Do NOT use conduit for ground or EXPORT 380V elements 3 Ph 41 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 4 pole 5 wire system per oven...

Page 23: ...d displays the conveyor bake time Dual belt ovens have two displays single units have one A Main On Off Button B Conveyor Time Setting C Temperature Control Display E Energy Level Indicators E Energy...

Page 24: ...ure Indicates 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...

Page 25: ...to do this will eventually shut down the oven due to excessive temperature High Control Compartment Temperature The computer has detected a problem with either the main or burner blowers This should...

Page 26: ...l shock exists in this oven Switch off and lockout tagout the electric supply BEFORE beginning to disassemble clean or service any oven Never disassemble or clean an oven with the BLOWER switch or any...

Page 27: ...4 3 AS EACH FINGERISDISASSEMBLED WRITETHE LOCATIONCODE FORTHEFINGERONALLTHREEOFITSPIECES Thiswill help you in correctly reassembling the air fingers CAUTION Incorrectreassemblyoftheairfingerswillchan...

Page 28: ...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 29: ...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 b...

Page 30: ...KWALL 9 1 97525 COOLING FAN CONTROL COMPARTMENT 10 1 60598 AIR SWITCH 11 2 44914 CONTROLLER POWER 208V 240V 12 2 44568 CONTROLLER POWER 380V 480V 13 1 60750 HEATER 208V 27 0 kW 14 1 60751 HEATER 240V...

Page 31: ...ection 4 procedure or call your Middleby Marshall Service Agency PROBLEM OVEN BLOWER AND CONVEYOR OPERATE YET THE OVEN IS NOT HEATING Start the oven again If the oven still does not heat call your Mid...

Page 32: ...SECTION 6 WIRING DIAGRAM Middleby Marshall Model Number E208 240 Volt 50 60 Hz 3 Phase 28 60739 Rev F...

Page 33: ...29 Middleby Marshall Model Number E380 480 Volt 50 60 Hz 3 Phase 60741 Rev F...

Page 34: ...30 NOTES...

Page 35: ...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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