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Karcher PS640G - page 1
O WNER'S OPERA TING AND INST ALLA TION MANU AL f or domestic and standard e xpor t o vens ©2007 Middleby Marshall Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved. Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • (847)741-3300 • FAX (847)741-4406 PS640 Series Gas Ovens P/N 60251 ...
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Karcher PS640G - page 2
ii RET AIN THIS MANU AL FOR FUTURE REFERENCE. Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 USA • (847)741-3300 • FAX (847) 741-4406 www.middleby.com NOTICE: This Owner's Operating and Installation Manual should be given to the user. The operator of the oven should be familiar with the functions and operatio ...
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Karcher PS640G - page 3
iii MIDDLEBY MARSHALL INC. O VEN LIMITED W ARRANTY (Non U . S.A.) The Seller warrants equipment manufactured by it to be free from defects in material and workmanship for which it is responsible. The Seller’s obligation under this warranty shall be limited to replacing or repairing, at Seller’s option, without charge, F.O.B. Seller’s factory, ...
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Karcher PS640G - page 4
iv NO TE 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 ................................. ...
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Karcher PS640G - page 5
I. O VEN USES PS640 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 others. II. O VEN COMPONENTS – see Figure 1-1. A. Conveyor Drive Motor: Moves the conveyor. B. Crumb Pans: Catch crumbs and other materials that drop through the conveyor belt. One crumb ...
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Karcher PS640G - page 6
I. O VEN SPECIFICA TIONS Table 1-1 Dimensions Single Oven Double Oven Triple Oven Overall Height 48-3/16 ″ (1219mm) 62-3/4 ″ (1575mm) 78-11/16 ″ (1981mm) Overall Depth 60 ″ (1524mm) 60 ″ (1524mm) 60 ″ (1524mm) Overall Length 76-1/2 ″ (1930mm) 76-1/2 ″ (1930mm) 76-1/2 ″ (1930mm) Conveyor Width – belt width is 32 ″ 33-1/2 ″ (8 ...
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Karcher PS640G - page 7
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 cl ...
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Karcher PS640G - page 8
PS640 O VEN INST ALLA TION REQUIRED KITS AND EQUIPMENT PS640 PS640 PS640 PS640 Gas Oven Single Oven 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/N51100 P/N59720 P/N59725 P/N59726 PS640 Single Gas Oven ...
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Karcher PS640G - page 9
Figure 2-2. Model PS640 Single Oven Option Base with Legs and Top PARTS LIST FOR PS640 SERIES SINGLE OVEN OPTION - BASE w/15 ″ ″ ″ ″ ″ LEGS & TOP P/N 59720 HARD WARE BA G 5, 6, 7 , 10 & 11 1 2 3 4 9 8 ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 37900-0024 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CAS ...
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Karcher PS640G - page 10
ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 37900-0102 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CASTER W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER FLAT PLATE 5 32 220373 3/8 ″ -16 × 13 HEX SCREW, SST 6 32 21416-0001 3/8 ″ FLAT WASHER, SS 7 32 21422-0001 3/8 ″ SPLIT LOCK WASHER, ZP 8 1 22450-0228 RESTRAINT ...
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Karcher PS640G - page 11
ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 45209 QUAD OUTRIGGER WELDMENT 3 2 22290-0009 SWIVEL CASTER, W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER, FLAT PLATE 5 4 45206 INSERT,QUAD ADJUSTMENT FOOT 6 4 45205 SPACER,QUAD CASTER 7 32 A27727 3/83 -16x1-1/4 HEX BOLT 8 32 A21924 3/83 FLAT WASHER, SS 9 32 21422-0001 3/83 SP ...
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Karcher PS640G - page 12
III. VENTILATION SYSTEM B. Recommendations NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2-5 ARE RECOMMENDATIONS ONLY. LOCAL, NATIONAL AND INTERNATIONAL CODES MUST BE FOLLOWED WHEN INSTALLING THE VENTILATION SYSTEM. ANY APPLICABLE CODES SUPERSEDE THE RECOMMENDATIONS SHOWN IN THIS MANUAL. The rate of air flow exhausted through the ventilation system ...
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Karcher PS640G - page 13
IV. ASSEMBLY A. Top Panel and Base Pad Assembly 1. Install the four leg extensions onto the base pad using the 3/8 ″ -16 × 1 ″ screws, 3/8 ″ flat washers, and 3/8 ″ lockwashers supplied in the Base Pad Kit. See Figure 2-6. Check that the finished sides of each leg extension face OUTWARDS. One rear leg should be attached using three 3/8 ″ ...
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Karcher PS640G - page 14
NOTE: DO NOT install top panel onto double or triple ovens until AFTER stacking the oven cavities. See Part B, Stacking. B. Stacking For single ovens, skip ahead to Part C, Restraint Cable Installation. IMPORTANT Middleby Marshall STRONGLY RECOMMENDS that PS 6 40 Gas oven cavities be stacked BY AUTHORIZED PERSONEL. Contact your Middleby Marshall Au ...
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Karcher PS640G - page 15
D. Conveyor Installation 1. Unfold the conveyor as shown in Figure 2-12. Then, begin to slide the conveyor into the end of the oven. The conveyor can only be installed from the end of the oven with the drive motor. 2. Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven. Check that the crumb tray su ...
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Karcher PS640G - page 16
5. If it is necessary to add or remove conveyor links to achieve the correct tension, OR if it is necessary to reverse the conveyor belt for correct orientation, the belt will need to be removed from the conveyor frame. If this is necessary, perform the following procedure: • Remove the conveyor assembly from the oven and place it flat on the flo ...
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Karcher PS640G - page 17
on the oven serial plate. The location of the serial plate is shown in Figure 1-1 (in Section 1, Description). A fused disconnect switch or a main circuit breaker (customer furnished) MUST be installed in the electric supply line for each oven cavity. It is recommended that the switch/circuit breaker have Lockout/Tagout capability. The supply condu ...
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Karcher PS640G - page 18
14 B. Connection Check the oven’s gas supply requirements before making the gas utility connection. Gas supply requirement are listed on the oven’s serial plate and in Table 1-4. Gas Orifice and Pressure Specifications (in Section 1, Description). Check the serial plate to determine the type of gas (Propane or Natural) to be used with the oven. ...
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Karcher PS640G - page 19
15 F. Adjusting the Minimum Pressure Setting 1. Disconnect pressure feedback connection (if appcable). 2. Connect a suitable pressure gauge to pipe line or to outlet pressure tap of gas control concerned, to measure burner pressure (measuring point must be as near to burner as possible). 3. Disconnect electrical connection of the Moduplus ® . 4. E ...
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Karcher PS640G - page 20
SECTION 3 - OPERA TION LOCATION AND DESCRIPTION OF CONTROLS A. Main On/Off Button Turns all oven functions on or off. If the oven is below the set point, it will rise to the set point and turn the conveyor on. If it is turned off and the oven is above 200° F, the blowers will remain on until the oven drops below 200° F. B. Conveyor Time Setting A ...
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Karcher PS640G - page 21
NORMAL OPERATION - STEP-BY-STEP A. Main Screen 1 . When the unit has been “OFF” for more than 1 minute the controller will display the screen saver, as shown in Figure 3-1. To start operation, push the “Enter/Reset” button. The controller will display the “OFF” screen, as shown in Figure 3-2. 3. To change the temperature, push the “TE ...
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Karcher PS640G - page 22
4. To change the conveyor belt speed, push the “TIME” button. The controller will display the screen, shown in Figure 3-5. To change the minute setting, push the “ ← ← ← ← ← ” arrow button. Then push either the “ ↑ ” arrow or “ ↓ ” arrow buttons to increase or decrease the time accordingly. To change the second setting ...
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Karcher PS640G - page 23
III. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION No electrical power • Check that the circuit breaker/fused disconnect is on. Make sure the emergenct stop button is on. Oven will not turn On. No gas pressure Burner did not light • Make sure main gas is on. • Turn oven off, and restart. If it still does not light, call for servic ...
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Karcher PS640G - page 24
Vents on front panel of oven Fan grills (2) on rear of oven and control compartment Vent (1) on rear of machinery compartment SECTION 4 - MAINTENANCE WARNING Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric supply BEFORE beginning to disassemble, clean, or service any oven. ...
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Karcher PS640G - page 25
II. MAINTENANCE – MONTHLY NOTE: When removing the conveyor, refer to Figure 2-12 (in Section 2, Installation). A . Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Remove the crumb trays from the oven. C. Lift the drive end of the conveyor slightly, and push it forward int ...
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Karcher PS640G - page 26
III. MAINTENANCE – EVERY 3 MONTHS A. Check that the oven is cool and the power is discon- nected, as described in the warning at the beginning of this Section. B. Vacuum both of the blower mounts, and their surrounding compartments, using a shop vacuum. C. Tighten all electrical terminal screws. D. Split Belt Disassembly and Cleaning 1. Refer to ...
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Karcher PS640G - page 27
Figure 4-6. Disassembling the drive shaft E. Blower Belt 1. Remove the six screws shown in Figure 4-7. Then, remove the rear panel from the oven. 2. Check the blower belt for the proper 1/4 ″ (6mm) deflec- tion at the center, and for cracking or excessive wear. See Figure 4-7. Overtightening the belt will cause premature bearing failure and possi ...
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Karcher PS640G - page 28
V. KEY SPARE PARTS – Available separately. See Figure 4-8. KEY SPARE PARTS PS640 GAS (B & W Touchscreen) ITEM QTY. P/N DESCRIPTION 1 1 60191 Digital Display, Programmed 2 1 58920 Motor, Conveyor Drive 3 1 58679 Conveyor Control Board 4 1 60192 Inverter, Programmed 5 1 M9608 Power Supply 6 1 60196 Kit, Thermocouple 7 1 97525 Fan Cooling Contro ...
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Karcher PS640G - page 29
SECTION 5 - WIRING DIA GRAM Middleby-Marshall Model Number G208-240 Volt 50/60 Hz, 1 Phase 25 59324 Rev. A6 ...
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Karcher PS640G - page 30
26 NOTES ...
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Karcher PS640G - page 31
27 NOTES ...
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Karcher PS640G - page 32
Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406 www .middleb y .com Middleby is proud to support the Commercial Food Equipment Service Association (CFESA). We recognize and applaud CFESA's ongoing efforts to improve the quality of technical service in the industry. W ...
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