SECTION 3 - SERVICING COMPONENTS

F. Initial Troubleshooting

NOTE: When changing the conveyor speed on a controller with a thumbwheel, it is advisable to turn the conveyor switch OFF before adjusting the thumbwheel. Note that this can- not be done on a digital keypad, as switching the conveyor switch OFF will also turn off the display.

1.Check all connections at the terminals on the conveyor speed control module to ensure that they are correct and tight. Connections are shown in the drawing.

Correct the connections if necessary.

Connections are

reversed if

conveyor direc- tion is reversed.

120VAC supply. Wire colors vary by oven model.

2.Ensure that there is power to the controller. Use a digital multimeter to read the voltage between the ter- minals marked “AC.” The voltage should read between 110-120VAC.

If the power is not present or of an incorrect voltage, check the power source.

3.With the AC power on, check the DC voltage to the conveyor motor. Match the measured volt- age with those shown on the chart below. If the voltage reading is more than ±5VDC of that shown on the chart, complete the Motor Test on the next page.

Thumbwheel/

DC Motor Voltage

Display

PS200,

PS310, 360,

Setting

570, 360WB70

360WB, 360EWB

3 mins.

84VDC

67VDC

 

 

 

4 mins.

63VDC

50VDC

5 mins.

51VDC

40VDC

6 mins.

43VDC

34VDC

7 mins.

37VDC

28VDC

 

 

 

8 mins.

32VDC

25VDC

 

 

 

9 mins.

29VDC

22VDC

10 mins.

27VDC

20VDC

11 mins.

24VDC

18VDC

 

 

 

12 mins.

22VDC

17VDC

 

 

 

13 mins.

19VDC

14VDC

 

 

 

15 mins.

18VDC

13VDC

4.Check the magnetic pickup on the motor.

If the pickup is in good condition, check that the conveyor is running and then check the volt- age between the “COM and “±5VDC” terminals on the controller. On controllers with thumb- wheels, the voltage should read 5VDC, ±0.3VDC. Digital con- trollers should read 5VDC , ±1.0VDC.

Next, check the voltage between the “COM”

and “COUNT” terminals. The reading should stay be- tween 2 and 3VDC.

If EITHER of these two readings are incorrect, perform the Conveyor Control Pickup Test on the next page.

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Middleby Marshall PS360, PS570, PS200, PS555, PS220 manual Initial Troubleshooting, Check the magnetic pickup on the motor
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PS224 PS310, PS220, PS555, PS200, PS360 specifications

The Middleby Marshall PS555 is a standout commercial pizza oven renowned for its performance, efficiency, and advanced technologies. Designed with the modern pizzeria in mind, the PS555 delivers exceptional cooking results while maximizing energy efficiency and throughput.

One of the key features of the PS555 is its innovative cooking technology, which incorporates both convection and radiant heat. This unique combination ensures that pizzas are cooked evenly and quickly, achieving a perfectly crispy crust and evenly melted cheese every time. The oven’s high-speed air impingement system accelerates cooking times, allowing pizzerias to serve more customers in less time without compromising quality.

The PS555 is designed with a spacious cooking chamber that can accommodate multiple pizzas simultaneously. With its ability to fit pizzas up to 18 inches in diameter, the oven is ideal for establishments with high demand. Additionally, the adjustable conveyor speed allows operators to customize the cooking time based on their specific menu items, enhancing versatility and productivity.

Energy efficiency is a hallmark of the Middleby Marshall PS555. The oven utilizes advanced insulation materials to minimize heat loss, ensuring that it operates at optimal temperatures while consuming less energy. This efficiency not only reduces operating costs but also contributes to a more sustainable kitchen environment.

User-friendly controls make it simple for operators to manage the cooking process. The PS555 features digital controls with programmable settings, enabling quick adjustments to temperature and cooking time. This ensures consistent quality across different shifts and helps maintain product standards while simplifying staff training.

Durability is another defining characteristic of the PS555. Built with high-quality materials, the oven is designed for heavy use in busy commercial kitchens. Its stainless steel construction ensures resistance to wear and tear, making it a worthwhile investment for any pizzeria.

In summary, the Middleby Marshall PS555 pizza oven is a high-performance piece of equipment that combines advanced cooking technologies, efficiency, and durability. Its ability to deliver consistently excellent results while streamlining operations makes it an essential asset for any pizza business aiming to enhance its productivity and customer satisfaction.
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