Final Assembly, VI. Electrical Supply | Middleby Marshall PS500

ENGLISH

SECTION 2 - INSTALLATION

V. FINAL ASSEMBLY

1.Install the crumb trays underneath the conveyor as shown in Figure 2-12. First, place the inside edge of the tray onto the retainer (shown in Figure 2-9). Then, swing the outside edge of the tray up and into place.

2.Press the conveyor end stop and rear stop down over the edge of the conveyor frame. See Figure 1-1 (in Section 1, Description).

VI. ELECTRICAL SUPPLY

WARNING

Authorized supplier personnel normally accomplish the connections for the ventilation system, electric supply, and gas supply, as arranged by the customer. Following these connections, the factory-authorized installer can perform the initial startup of the oven.

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 C22.2; the Australian Code AG601; or other applicable regulations.

NOTE: The electric supply connection must meet all national and local electrical code requirements.

Check the oven serial plate before making any electric supply connections. Electric supply connections must agree with data on the oven serial plate. The location of the serial plate is shown in Figure 1-1 (in Section 1, Description).

A fused disconnect switch or a main circuit breaker (customer furnished) MUST be installed in the electric supply line for each oven cavity. It is recommended that this switch/circuit breaker have lockout/tagout capability.

The supply conductors must be of the size and material (cop- per) recommended. Refer to the wiring diagram inside the machinery compartment of the oven. Electrical specifications are also listed on the oven's serial plate and in Table 1-4, Electrical Specifications (in Section 1, Description).

The oven requires a ground connection to the oven ground screw. For gas ovens, the ground screw is located in the electrical junction box (see Figure 2-13). For electric ovens, the ground screw is located inside the side compartment of the oven (see Figure 2-14). If necessary, have the electrician supply the ground wire. Do NOT use the wiring conduit or other piping for ground connections!

Figure 2-12 - Crumb trays

	Place inside
Swing outside	edge of tray on
edge of tray	retainer bracket
up and into
place

A.Additional Information - Gas Ovens

Incoming electrical power lines are fed through the strain- relief fitting, shown in Figure 2-13. The electrical supply connections are made inside the electrical junction box. The power lines then connect to the oven circuits through safety switches located inside the machinery compart- ment and each blower motor compartment. These switches interrupt electric power to the oven when the Machinery Compartment Access Panel is opened, OR when either of the blower or rear shrouds is removed.

B.Additional Information - Electric Ovens

A 2" (51mm) dia. cutout in the back wall of the machinery compartment provides access to the electrical supply connections. The actual wiring connections are made at the terminal block located inside the side compartment of the oven.

Using flexible cables for the electric power supply conductors requires a 2" (51mm) strain-relief fitting (not furnished with the oven) to enable safe access to the terminal block.

C.Connection

Refer to the wiring diagram inside the machinery compartment of the oven to determine the correct connections for the electrical supply lines. Connect the supply as indicated on the wiring diagram.

CAUTION

The terms of the oven's warranty require all start-ups, conver- sions and service work to be performed by a Middleby Marshall Authorized Service Agent.