Middleby Marshall PS638 Series Owner's Operating And Installation Manual
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Middleby Marshall PS638 Series Owner's Operating And Installation Manual

Electric and gas ovens
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PS638 Series
Electric and Gas Oven
Domestic & Standard Export
rd
Released October 3
, 2017
PS638 Series Electric and Gas Ovens
Model:
 PS638E Electric
 PS638G Gas
OWNER'S OPERATING AND
INSTALLATION MANUAL
f o r D o m e s t i c & S t a n d a r d E x p o r t O v e n s
© 2019 Middleby Marshall Inc.
is a registered trademark of Middleby Marshall, Inc. All rights reserved.
Combinations:
 Single Oven
 Double Oven (Two-Stack)
 Triple Oven (Three-Stack)
 KOF Applications
P/N: 74617
Revision D
Sep
st
tember 1
, 2019
ENGLISH

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Summary of Contents for Middleby Marshall PS638 Series

  • Page 1 D o m e s t i c & S t a n d a r d E x p o r t O v e n s © 2019 Middleby Marshall Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved.
  • Page 2 MARSHALL.COM CONSULTING THE LOCAL GAS SUPPLIER F THE SMELL NOTICE DETECTED IMMEDIATELY CALL Using parts other than genuine Middleby Marshall EMERGENCY PHONE NUMBER OF YOUR LOCAL GAS factory manufactured parts relieves the manufacturer COMPANY WILL HAVE PERSONNEL of all warranty and liability.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Page SECTION 1 - DESCRIPTION SECTION 3 - OPERATION I. DESCRIPTION OF CONTROLS ……………..24 OVEN USES ……………...…….………..1 II. NORMAL OPERATION II. OVEN COMPONENTS …….……………1 A. Daily Oven Start-Up Procedure………….25 Conveyor Motor Drive B. Daily Shut-Down Procedure………………25 Crumb Pans C.
  • Page 4 THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU This warranty is effective on Middleby Marshall equipment OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES sold on, or after January 1 , 2007.

  • Page 5: Section 1 - Description Page

    SECTION 1 - DESCRIPTION OVEN USES The PS638 Series Continuous Batch WOW Conveyor Ovens can be used to bake, cook, crisp, dry, heat, or finish a wide variety of products, such as catering, pastries, pizza, pizza-type products, cookies, sandwiches and other items OVEN COMPONENTS –...

  • Page 6: Oven Specifications

    II. OVEN SPECIFICATIONS – PS638E Single Oven Double Oven Triple Oven Table 1-1 Dimensions Overall Height 42” (1064 mm) 51.25” (1301 mm) 63.50” (1612 mm) Overall Depth 50” (1270 mm) 50” (1270 mm) 50” (1270 mm) 65.25” (1656 mm) 65.25” (1656 mm) Overall Length 65.25”...
  • Page 7 I. OVEN SPECIFICATIONS – PS638G Single Oven Double Oven Triple Oven Table 1-1 Dimensions Overall Height 42” (1066.8 mm) 51.25” (1301.8 mm) 63.50” (1612.9 mm) Overall Depth 50” (1270 mm) 50” (1270 mm) 50” (1270 mm) Overall Length 65.25” (1657 mm) 65.25”...

  • Page 8: Section 2 - Installation General

    SECTION 2 - INSTALLATION I. GENERAL 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 burner. Check that the ventilation system is in operation WARNING –...

  • Page 9: Base/Top Kits & Equipment

    One (1) PN 71687 PS638G Double Gas 74075 One (1) PN 73754 PS638G Triple Gas 74075 One (1) PN 73556 LOOSE PARTS & KITS FOR PS638 SERIES OVEN INSTALLATION KITS (PN 74121-E & 74075-G) GAS OR ITEM PART DESCRIPTION ELECTRIC...
  • Page 10 A. P/N: 71687 – SINGLE OVEN BASE & TOP KIT 5  ...
  • Page 11 B. P/N: 73754 – DOUBLE OVEN BASE & TOP KIT 6  ...
  • Page 12 C. P/N: 73556 – TRIPLE OVEN BASE & TOP KIT 7  ...

  • Page 13: Oven Layouts

      III. PS638 OVEN LAYOUTS A. Single Oven 8  ...
  • Page 14         9  ...
  • Page 15   III. PS638 OVEN LAYOUTS (cont.) Oven B. Double and Triple 10  ...
  • Page 16       11  ...

  • Page 17: Ventilation System

    VENTILATION SYSTEM B. Recommendations NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2-5 ARE RECOMMENDATIONS ONLY. LOCAL, IMPORTANT NATIONAL, AND INTERNATIONAL CODES MUST BE FOLLOWED WHEN INSTALLING THE VENTILATION Where national or local codes require the SYSTEM. ANY APPLICABLE CODES SUPERSEDE THE installation of fire suppression equipment or RECOMMENDATIONS SHOWN IN THIS MANUAL.

  • Page 18: Assembly

    V. ASSEMBLY Fig 2-6. Leg Extension and Caster Installation Top Panel and Base Pad Assembly Install the four leg extensions onto the base pad using the 3/8”-16 x 1” screws, 3/8” flat washers and 3/8” lock washers supplied in the Base Pad Kit. See Figure 2-6. Install the spring clip for the oven restraining cable to the hole in the bottom middle of the base pad, see Oven Base &...
  • Page 19 One end of the cable is anchored to the snap clip on the underside of the base pad while IMPORTANT Middleby Marshall STRONGLY RECOMMENDS that the the other is anchored to the wall. See Figure 2-11. PS638-WOW oven cavities be stacked by AUTHORIZED PERSONNEL.

  • Page 20: Conveyor Installation

    D. Conveyor Installation Figure 2-13 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 form the side of the oven where the drive motors are located. Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven.

  • Page 21: Final Assembly

    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: ...

  • Page 22: Connection

    Electric supply connections must agree start-ups, conversions and service work to be with data on the oven serial plate. The location of the serial performed by a Middleby Marshall Authorized plate is shown in Figure 1-1 (in Section 1, Description). Service Company.
  • Page 23 CIRCUIT BREAKER Separate circuit breaker with lockout/tagout electrical shutoff for each oven. Wire each oven separately. 100 Amp circuit breaker for 208-240V, or 50 Amp circuit breaker for 380-480V. Typical PS638-Series Oven Installation ELECTRICAL SPECIFICATIONS ELECTRICAL RATING DOMESTIC: 208V main blower motors and elements, 3 22.0 kW/hr.

  • Page 24: Gas Conversion

    VII. GAS SUPPLY B. Connection Check the oven’s gas supply requirements before making DURING PRESSURE TESTING NOTE the gas utility connections. Gas supply requirements are ALL OF THE FOLLOWING: listed on the oven’s serial plate and in Table 1-4. Gas Orifice and Pressure Specifications (in Section 1, Description).

  • Page 25: Checkout

    D. PS638G Propane/ULPG Conversion Three items must be changed to change the oven to operate Figure 2-20. Burner Components on ULPG ( 74072) See Addendum for ULPG Conversion Kit # 1. Replace main orifices. 2. Replace the By-Pass orifice 3. Adjust main gas regulator. Disconnect the manifold union closest to the main burner, and remove the manifold assembly (four screws).
  • Page 26 PS638G GAS SPECIFICATIONS Natural Gas Maximum Gas Input Rate: 89,000 BTU/Hr (26.1 kW) Incoming Gas Pressure Required: 6 - 8 inches w.c. (1.5 KPa – 2.0 KPa) (14.9 – 19.9 mbar) Burner Gas Manifold Pressure: 3.5 inches water column (0.87 KPa) (8.7 mbar) Main Injector Size (3X): #39 drill (0.0995”) (2.527mm) / Marked #39 on injector Bypass Injector Diameter: #49 drill (0.073”) (1.854mm)
  • Page 27 GAS CONVERSION ULPG Pressure Spring Replacement Where permitted by local and national codes, it is possible to convert ovens from natural gas to propane/ULPG or from ULPG to natural gas. Locate the cap covering the pressure regulator adjusting screw on the Use the appropriate Middleby Gas Conversion combination gas control valve.
  • Page 28 gas at the burners. Set the oven temperature to 550 F (288 C) and allow the oven to heat to Manifold Pressure Tap F (149 13. With the HEAT percentage on the user interface showing 100%, check manifold pressure and adjust the plastic adjuster screw if necessary.

  • Page 29: Section 3 - Operation

    SECTION 3 – OPERATION WARNING DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION I. DESCRIPTION AND LOCATION OF HIGH RESOLUTION SCREEN CONTROLS A. Main ON/OFF BUTTON: Turns on or off oven controls. If oven is above 200 F, blowers will remain on until oven cools down.

  • Page 30: Daily Oven Start-Up Procedure

    NORMAL DAILY STEP-BY-STEP OPERATION A. D – AILY TART ROCEDURE ESOLUTION OUCH CREEN ONTROLS 1. Check that the circuit breaker/fused disconnect UICK EFERENCE UIDE is in the ON position. Main ON/OFF Button: Turns on or off oven 2. Check that the optional window is closed. controls.

  • Page 31: Ignition Sequence Of Operation

    C. G D. E NITIAL GNITION NERGY ANAGEMENT NFORMATION EQUENCE OF PERATION The PS638 reduces energy usage in two ways over most competitive ovens: PS638G performs following sequence of operation when first turned on:  Modulating Gas Control (Gas Energy A.

  • Page 32: Other Adjustments (Manager Mode)

    III. OTHER ADJUSTMENTS (MANAGER MODE) PLC S YSTEM ONTROL AND PERATION When the PS638 Oven, Display, and PLC When finished making bake adjustments, are powered up by the ON-OFF Rotary press the BACK button. WAIT for the Switch, the following screen will appear: main screen to display READY.
  • Page 33 MENU SELECT The menu select operation is similar to standard operation. There are three menu buttons: These allow the operator to toggle between preset menus (temperature, bake time, and blower Hz). Pressing the Hz value will not bring up a setting screen, but WILL bring up a password screen.
  • Page 34 IV. PS638 TROUBLESHOOTING INFORMATION ROUBLESHOOTING UIDE SYMPTOM POSSIBLE CAUSES SOLUTIONS 1. Check plug at wall 1. Power not connected Nothing displayed on controller 2. Main breaker not on 2. Check main breaker 3. Control circuit breaker tripped 3. Check control breaker No problem –...
  • Page 35 B. ALERTS, ERROR MESSAGES, & REMEDIES MESSAGE PROBABLE CAUSE REMEDY Clean Rear Filters CLEAN FILTERS Cooling Fan Filters are clogged. -or- Call for Service to Repair. CONTROL OVERTEMP. Cooling Fans are not working FRONT BELT JAMMED Remove Obstruction, reset circuit Belt was overloaded and control -or- shut down the belt.

  • Page 36: Section 4 - Maintenance

    NOTE ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Middleby Marshall Authorized Service Agent.

  • Page 37: Maintenance - Monthly

    II. MAINTENANCE – MONTHLY NOTE: When removing the conveyor, refer to Figure 2-12 (in Section 2, Installation). Check that the oven is cool and the power is disconnected as described in the warning at the beginning of this section. Remove the crumb trays from the oven. Lift the drive end of the conveyor slightly, and push it forward into the oven.
  • Page 38 Reassemble the idler shaft into the conveyor. III. MAINTENANCE – EVERY 3 MONTHS Make sure that the bronze washer is in place between the two sections of the shaft. See Figure A. Check that the oven is cool and the power is disconnected, 4-4.

  • Page 39: Key Spare Parts

    IV. MAINTENANCE - EVERY 6 MONTHS A. The Six-Month Maintenance should be carried out by a qualified Middleby authorized service agent or by Middleby authorized personnel. B. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section.
  • Page 40 V. PS638E & G OVEN KEY SPARE PARTS ITEM DESCRIPTION 74453 Digital Display, Programmed 65756 Motor, Conveyor Drive ( 74106 71927 Dual-Mode Conveyor Control Board 74097 VFD Inverter, 2 HP (230VAC Input) 61186 Power Supply, 24VDC, 40W 71421 Hamlin Rotation Hall Effect Sensor 36451 Small Cooling Fan for Right Control Compartment 97525...

  • Page 41: Section 5 - Wiring Diagram

    SECTION 5 – WIRING DIAGRAMS 36 ...
  • Page 42 Electric Schematics 37 ...
  • Page 43 38 ...
  • Page 44 39 ...
  • Page 45 40 ...

  • Page 46: Section - Assembly Drawings

    SECTION 6 – ASSEMBLY DRAWINGS 41 ...
  • Page 47 42 ...
  • Page 48 43 ...
  • Page 49 44 ...
  • Page 50 45 ...
  • Page 51 Marshall Authorized Service Agent. Service that is performed by parties other than Your Middleby Marshall Authorized Service Agent may void your warranty. NOTICE Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability. NOTICE Middleby Marshall reserves the right to change specifications at any time.

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