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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 burners will completely shut off, allowing
the oven to cool and the burners are on minimum flow. 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.

Содержание PS840 Series

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

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

Страница 33: ...29 NOTES...

Страница 34: ...30 NOTES...

Страница 35: ...31 NOTES...

Страница 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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