Middleby Marshall PS570S III. Maintenance Every 3 Months, Split Belt Disassembly and Cleaning

Page 19

III. MAINTENANCE - EVERY 3 MONTHS

A.Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section.

B.Vacuum both of the blower motors, and their surrounding compartments, using a shop vacuum.

C.Tighten all electrical control terminal screws.

D.Split Belt Disassembly and Cleaning

For split belt ovens ONLY, disassemble, clean and lubricate the conveyor shaft components as described below.

1.Remove the motor shroud, conveyor extensions, and con- veyor as described in Part II, Monthly Maintenance.

2.Remove the master links from each conveyor belt. Then, roll the belts up along the length of the conveyor to remove them from the frame.

3.Remove the two conveyor adjustment screws from the idler end of the conveyor frame, as shown in Figure 4-7.

4.Remove the idler shaft assembly from the conveyor.

5.Pull apart the two sections of the idler shaft. Clean the

shafts thoroughly using a rag. Then, lubricate both the extended shaft and the interior of the hollow shaft using an FDA-approved light food-grade lubricant.

CAUTION

DO NOT lubricate the shafts using WD40 or a similar product. This can cause the shafts to wear rapidly.

6.Before reassembling the shafts into the conveyor frame, check that they are oriented properly. Remember that unequal-width split belt ovens should ALWAYS have the narrower belt at the front of the oven.

7.Reassemble the idler shaft into the conveyor. Make sure that the bronze washer is in place between the two sections of the shaft. See Figure 4-9.

8.Replace the conveyor adjustment screws as shown in Figure 4-7. To allow the conveyor belt to be reinstalled later, do not tighten the screws at this time.

9.Loosen the set screw on both of the conveyor drive sprock- ets. Then, remove the sprockets from the shaft.

10.Loosen the locking collar set screw. See Figure 4-8.

11.Push the drive shaft to the left, then lift it free of the conveyor frame. Then, disassemble and lubricate the two sections of the drive shaft as described in Step 5.

12.Before reassembling the shafts into the conveyor frame, check that they are oriented properly. Remember that unequal-width split belt ovens should ALWAYS have the narrower belt at the front of the oven.

13.Reassemble the drive shaft into the conveyor. Check that the nylon spacer is in place, as shown in Figure 4-9. Also, check that the bronze washer is in place between the two sections of the shaft.

14.Replace the drive sprockets. Reassemble the belts and master links onto the conveyor. Check that the smooth side of the conveyor belt faces UP, and that the belt and master links are oriented as shown in Figure 4-10.

15.Reassemble the conveyor, motor shroud and conveyor extensions onto the oven.

16.Check the tension of the conveyor belt as shown in Figure

4-6. The belt should lift between 3-4" (75-100mm). If

necessary, adjust the belt tension by turning the conveyor

 

adjustment screws.

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SECTION4-MAINTENANCE

Figure 4-7 - Split Belt Idler Shaft

Conveyor adjustment screw

Figure 4-8 - Split Belt Drive Shaft

Locking collar

Figure 4-9 - Washer and Spacer

Bronze washer on

BOTH idler and

drive shafts

Nylon spacer on drive shaft

ONLY

Figure 4-10 - Conveyor and Master Link Orientation

Direction

of travel

CORRECT master link position

Incorrect master link position

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Contents Owners Operating Retain This Manual For Future Reference Table of Contents Conveyor Drive Motor Moves the conveyor DimensionsGeneral Specifications per oven cavity DescriptionInstallation Installation Kit Installation KIT see Figure Other ventilation concerns III. Ventilation SystemRequirements RecommendationsBase Pad, Legs, Casters, and Stacking IV. AssemblyRestraint Cable Installation Conveyor Installation10 Checking the conveyor tension VII. GAS Supply Final AssemblyDuringpressuretestingnoteoneofthefollowing VI. Electrical SupplyConnection Gas Utility Rough-In RecommendationsGas Conversion Location and Description of Controls OperationDailyshutdownprocedure DailystartupprocedureII. Normal Operation STEP-BY-STEP Actual Temp III. Quick Reference Digital Temperature ControllerSymptom Problem Solution IV. Quick Reference TroubleshootingMaintenance Daily MaintenanceRemoving the Conveyor II. Maintenance MonthlySplit Belt Disassembly and Cleaning III. Maintenance Every 3 MonthsBlower Belts IV. Maintenance Every 6 MonthsLubricating the Blower Fan Bearings Description KEY Spare Parts KITElectrical Wiring Diagram

PS570S specifications

The Middleby Marshall PS570S is a state-of-the-art conveyor oven that has carved a niche for itself in the fast-paced foodservice industry. Renowned for its remarkable efficiency and versatile cooking capabilities, this oven is an ideal solution for high-volume operations, including pizza shops, restaurants, and other commercial kitchens.

One of the standout features of the PS570S is its advanced cooking technology. The oven incorporates Middleby Marshall’s patented "ShadowBand" technology, which uses a unique heat transfer system that enhances cooking speed and consistency. The design provides optimal heat distribution, ensuring that every item cooked achieves a perfect golden-brown finish while maintaining moisture within the food. This feature is particularly beneficial for products like pizzas, where both crust texture and toppings' freshness are paramount.

The PS570S also boasts an impressive conveyor system that operates at various speeds, allowing operators to customize cooking times based on the specific items being prepared. The oven includes a width-adjustable conveyor belt, catering to a variety of food sizes and types. This flexibility supports an array of menu options, from traditional pizzas to baked goods, ensuring that businesses can meet a diverse range of customer demands.

Moreover, the energy efficiency of the PS570S is notable. The oven utilizes a high-efficiency gas burner system, which significantly reduces energy consumption while maintaining optimal cooking performance. This translates to lower operational costs, making it an attractive choice for budget-conscious establishments looking to maximize their returns.

Another important characteristic is the oven's intuitive digital control system. Operators can easily set cooking times, temperatures, and conveyor speed through an easy-to-navigate interface. The digital controls also allow for programmable recipes, enabling staff to replicate successful dishes with accuracy, thus minimizing waste and maximizing quality.

In terms of maintenance, the PS570S is designed with easy access to internal components, ensuring that cleaning and servicing can be performed quickly and efficiently. The oven's robust construction promises durability, making it a long-term investment for any commercial kitchen.

In summary, the Middleby Marshall PS570S combines advanced heating technology, customizable cooking options, energy efficiency, and user-friendly controls. With its reliability and versatility, it stands out as an essential tool for any operation that prioritizes quality and speed.
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