SECTION4-MAINTENANCE

E.Blower Belts

1.To gain access to each blower belt compartment, remove the four screws shown in Figure 4-11. Then, lift the rear shroud off its hangers.

2.Check each blower belt for at least 1" (25mm) deflec- tion at the center, and for cracking or excessive wear. See Figure 4-12. Overtightening the belt will cause premature bearing failure and possible vibrations.

3.If necessary, adjust the tension of the belt by loosening the four motor mounting bolts. Reposition the motor as neccessary until the correct deflection is reached, then tighten the motor mounting bolts.

F.Lubricating the Blower Fan Bearings

1.Use a grease gun to lubricate the main blower fan shaft bearings, as shown in Figure 4-13.

When lubricating the bearings:

•Use a high-quality NLGI #2, lithium soap grease with petroleum oil, such as Middleby P/N 17110- 0015.

•Add the grease slowly until a small bead of grease is present at the seals. AVOID OVERGREASING. Excessive greasing may harm the bearing.

2.Manually turn the blower shaft by pulling on the belt to purge the grease.

3.Wipe off any excess grease on the bearings. Then, replace the shrouds onto the oven.

NOTE

The oven will not operate unless both of the rear shrouds are in place.

IV. MAINTENANCE - EVERY 6 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.Check for excessive wear on the conveyor drive motor brushes. The brushes should be replaced if they have worn to less than 1/4" (6.4mm) in length. Be sure to replace the brushes in exactly the same position.

C.Clean and inspect the burner nozzle and electrode assem- bly.

D.Check (and clean, if necessary) the oven venting system.

E.Check the conveyor drive shaft bushings and spacers. Replace the components if they are worn.

Figure 4-11 - Rear Shrouds

Screws

(2 per fan cover)

Screws

(2 per shroud)

Figure 4-12 - Fan Belt Tension

At least 1" (25mm)

deflection

Figure 4-13 - Lubricating the Bearings

Grease fittings

(1 per bearing, 4

total)

20

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Middleby Marshall PS570S IV. Maintenance Every 6 Months, Blower Belts, Lubricating the Blower Fan Bearings
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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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