P/N 44727 Rev. C V1 2/01 página 57 ESPAÑOL page 29 FRANÇAIS page 1 ENGLISH PS536 Gas & Electric Domestic & Std. Export ENGLISH/French/Spanish PS536 Gas and Electric Ovens Models: Combinations: PS536 Single Oven Double Oven (Two-Stack) Triple Oven (Three-Stack) OWNER'S OPERATING AND INSTALLATION MANUAL for domestic and standard export ovens PS536 GAS PS536 ELECTRIC 208/230V models © 2001 Middleby Marshall, Inc. is a registered trademark of Middleby Marshall, Inc.
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 operation of the oven. This manual must be kept in a prominent, easily reachable location near the oven. ENGLISH Gas ovens are designed for use with EITHER natural gas OR liquid propane gas, as specified on the serial plate.
TABLE OF CONTENTS page page V. FINAL ASSEMBLY ................................................... 12 I. OVEN USES ............................................................. 4 II. OVEN COMPONENTS ............................................. 4 A. Additional Information - Gas Ovens ................ 13 A. Window ............................................................. 4 B. Additional Information - Electric Ovens .......... 13 B. Conveyor Exit Tray .........................................
SECTION 1 - DESCRIPTION I. ENGLISH OVEN USES Not Shown: PS536 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. K. Gas Burner (gas ovens) or Heating Elements (electric ovens): Heat(s) air, which is then projected to the air fingers by the blowers. L. Blowers: Fans that project hot air from the gas burner or heating elements to the air fingers. II. OVEN COMPONENTS - see Figure 1-1. A.
SECTION 1 - DESCRIPTION Main Blower Voltage Control Circuit Voltage 208V Freq. 120V conv. speed control, drive motor, contactor, & temp. control; all others 208V 3 Ph 60 Hz 50A 50A 50A -- 230V 120V conv. speed control, drive motor, contactor, & temp. control; all others 230V 3 Ph 60 Hz 45A 45A 45A 380V * 120V conv. speed control, drive motor, contactor, & temp.
SECTION 2 - INSTALLATION WARNING - For gas ovens, after any conversions, readjustments, or service work on the oven: ENGLISH Perform a gas leak test. Test for correct air supply. Test for proper combustion and gas supply. Check that the ventilation system is in operation. WARNING For electric ovens, after any conversions, readjustments, or service work on the oven, check that the ventilation system (if so equipped) is in operation.
SECTION 2 - INSTALLATION Figure 2-1 - Installation Kit 3 7 1 8a 8b 11 6 14 10 13 9 12 5 I. 15 16 4 ENGLISH 2 1 17 18 INSTALLATION KIT - see Figure 2-1 Item Qty. Single Oven Qty. Double Oven Qty. Triple Oven Part No.
SECTION 2 - INSTALLATION II. VENTILATION SYSTEM B. NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 22 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. IMPORTANT ENGLISH 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.
SECTION 2 - INSTALLATION III. ASSEMBLY Figure 2-3 - Leg extension and casters installation Top Panel and Base Pad Assembly 1. Install the four leg extensions onto the base pad using the 3/8"-16x1" screws, 3/8" flat washers, and 3/8" lockwashers supplied in the Base Pad Kit. See Figure 2-3. Check that the finished sides of each leg extension face OUTWARDS.
SECTION 2 - INSTALLATION B. Stacking Figure 2-5 - Assembling the stacking spacers For single ovens, skip ahead to Part C, Restraint Cable Installation. For double or triple ovens, continue on to Step 1, below. ENGLISH 1. Assemble the stacking spacer(s) as shown in Figure 2-5. One spacer assembly is supplied for a double oven, while two are supplied for a triple oven. 2. Place one of the assembled spacers on top of the lower oven cavity, making sure that the insulation faces up. 3.
SECTION 2 - INSTALLATION Conveyor Installation 1. Unfold the conveyor frame so that it lies flat on the floor. As you unfold the frame, check that the locator pins shown in Figure 2-8 lock into the slots on the bracket. 2. Refer to Figure 2-8. Note the locations of the four tensioning screws (2 per side) in the slotted holes on the brackets. Loosen these screws to allow the conveyor to be properly tensioned. 3.
SECTION 2 - INSTALLATION ENGLISH 6. Lift the conveyor and position it in the oven. The conveyor can only be installed from the end of the oven with the drive motor. 7. Continue moving the conveyor into the oven until the conveyor frame is positioned properly. The inside supports for the crumb trays should rest firmly against the lower end plugs, as shown in Figure 2-10. 8.
SECTION 2 - INSTALLATION VI. ELECTRICAL SUPPLY B. Additional Information - Electric Ovens Using flexible cables for the electric power supply conductors requires a 1.3" (33mm) strain-relief fitting (not furnished with the oven) to enable safe access to the terminal block. NOTE: The electric supply installation must satisfy the requirements of the appropriate statutory authority, such as the National Electrical Code (NEC), ANSI/NFPA70, (U.S.A.); the Canadian Electrical Code, CSA C22.
SECTION 2 - INSTALLATION A. Gas Utility Rough-In Recommendations Figure 2-14 - Flexible Gas Hose Installation The following gas system specifications are STRONGLY RECOMMENDED. Deviating from these recommendations may affect the baking performance of the oven. Gas Meter - 650 cfh meter ENGLISH 90° Elbow Gas Line DEDICATED LINE from the gas meter to the oven 2" (50.8mm) pipe for natural gas 1-1/2" (38.1mm) pipe for propane Maximum length: 200' (61m). Each 90° elbow equals 7' (2.13m) of pipe. B.
SECTION 3 - OPERATION I. LOCATION AND DESCRIPTION OF CONTROLS ENGLISH Fig. 3-1 - Control Panel D D B A C A. "BLOWER" Switch: Turns the blowers and cooling fans on and off. When set to the "ON" (I) position, it also allows the burner (gas ovens) or heating elements (electric ovens) to activate. Activation is determined by the settings on the Digital Temperature Controller. B. "CONVEYOR" Switch: Turns the conveyor drive motor on and off. C.
SECTION 3 - OPERATION II. NORMAL OPERATION - STEP-BY-STEP ENGLISH A. DAILY STARTUP PROCEDURE 1. Check that the circuit breaker/fused disconnect is in the on position. Check that the window (if so equipped) is closed. 2. Turn the "BLOWER" ( ) switch to the ON ("I") position. 3. Turn the "CONVEYOR" ) switch to the ON ( ("I") position. 4. If necessary, adjust the conveyor speed setting or by pressing the pushbuttons on the conveyor speed controller to change the displayed bake time.
If the oven uses this Digital Temperature Controller: 5b. Adjust the temperature controller to a desired set temperature, if necessary. Press the Set Point and Unlock keys at the same time. Wait for the "SET PT" light to turn on. Press the Up Arrow and Down Arrow Keys as necessary to adjust the setpoint. B. DAILY SHUTDOWN PROCEDURE 1. Turn the "BLOWER" ( ) and "CONVEYOR" ( ) switches to the "OFF" ("O") position. Open the window (if so equipped) to allow the oven to cool faster.
SECTION 3 - OPERATION III. QUICK REFERENCE: DIGITAL TEMPERATURE CONTROLLERS ENGLISH light Illuminates when the burner or heating elements are on. This light will flicker during normal operation after the oven reaches the set point temperature. light Illuminates when oven temperature is EITHER below 200°F/93°C OR above 600°F/ 316°C. Upper display Shows the actual oven temperature. Lower display Shows the set point temperature. Percent indicator light Service use only.
Display "HEAT ON" Light Shows the Set Point or the Actual Temperature in degrees Fahrenheit (F) or Celsius (C). "SP LOCK" Light ENGLISH SECTION 3 - OPERATION Lights when the burner or heating elements, as appropriate for the oven model, are in operation. Lights when the set point is locked out from changes. This setting can only be changed by service personnel. "SET PT" (setpoint) Light Lights when the set point is shown in the display.
SECTION 3 - OPERATION IV. QUICK REFERENCE: SYMPTOM TROUBLESHOOTING PROBLEM SOLUTION ENGLISH Turn the oven off according to the Daily Shutdown Procedure. Allow the oven to cool. Regardless of the time that is required for the oven to cool, wait for AT LEAST FIVE MINUTES before restarting the oven. Repeat the Daily Startup Procedure. The oven temperature exceeded 650°F (343°C), and the oven was automatically shut down. Turn the oven off according to the Daily Shutdown Procedure.
SECTION 4 - MAINTENANCE WARNING 1. 2. 3. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm. Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven. If it is necessary to move a gas oven for cleaning or servicing, disconnect 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. For gas ovens, reconnect the gas supply. 3.
SECTION 4 - MAINTENANCE II. MAINTENANCE - MONTHLY ENGLISH A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Refer to Part D, Conveyor Installation, in the Installation section of this Manual. Then, remove the following components from the oven: Conveyor exit tray Crumb trays Chain cover End plugs Conveyor assembly Figure 4-2 - Removing Air Fingers and Plates C.
SECTION 4 - MAINTENANCE Disassemble and clean the drive and idler shafts using the following procedure. a. Loosen (DO NOT REMOVE) the set screw on the outer drive sprocket. Then, slide the drive sprocket off the end of the drive shaft. See Figure 4-4. b. Loosen (DO NOT REMOVE) the set screws on all four steel spacers (2 per shaft), AND on all twelve conveyor belt sprockets (6 per shaft). c.
SECTION 4 - MAINTENANCE E. ENGLISH F. Blower Belt 1. Remove the six screws shown in Figure 4-6. Then, remove the rear panel from the oven. 2. Check the blower belt for the proper 1/4" (6.4mm) deflection at the center, and for cracking or excessive wear. See Figure 4-6. Overtightening the belt will cause premature bearing failure and possible vibrations. A loose belt may also cause vibrations. 3. If necessary, adjust the tension of the belt by loosening the four motor mounting bolts.
BLOWER MOTOR N COOLING FAN COOLING FAN CIRCUIT BR E AKE R 15A L2 TERMINAL BLOCK L1 CONTACTOR HIGH LIMIT CONTROL MODULE An electrical wiring diagram for the oven is also located inside the machinery compartment.
HEATER 8kW 3-PHASE RELAY An electrical wiring diagram for the oven is also located inside the machinery compartment.
FUSES 60A L1 L2 HEATER 8kW L3 TERMINAL BLOCK 3-PHASE RELAY N An electrical wiring diagram for the oven is also located inside the machinery compartment.
page 1 ENGLISH page 29 FRANÇAIS página 57 ESPAÑOL Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin, IL 60120 USA (847)741-3300 FAX (847)741-4406 24-Hour Service Hotline: 1-(800)-238-8444 www.middleby.
