Turbo Chef Technologies NGC-1007 manual

THE MICROWAVE SYSTEM

The Microwave System is the most complex system in the oven. Proper care must be taken during servicing to protect both the operator and technician.

VOLTAGE DOUBLER CIRCUIT DESCRIPTION

The Microwave System consists of a magnetron and Voltage Doubler Circuit. The Voltage Doubler Circuit consists of a special step-up transformer, a capacitor, and a diode.

MONITOR CIRCUIT DESCRIPTION

In addition to understanding the Voltage Doubler Circuit, it is imperative to understand how the Monitor Circuit operates. The Monitor Circuit is a failsafe circuit designed to protect the operator if both the primary and secondary inter- lock switches fail to operate normally.

The Monitor Circuit consists of the primary and secondary interlock switch, monitor safety switch, monitor relay, and the F3 fuse. When the oven door closes during normal operation, the monitor, secondary, and primary switches close in the order listed above. When all switches are closed, the Microwave System is allowed to operate.

If during normal operation any of the interlock switches open - such as when the oven door opens

-the control will turn off the microwave. If the monitor switch opens before the primary or sec- ondary switches (abnormal operation), the monitor switch de-energizes the monitor relay. When this occurs, a dead short is placed across L1 and L2. The short then blows the F3 fuse, which perma- nently interrupts power to the Microwave System until all switches are repaired and/or functioning properly.

Figure 18 shows a schematic of the Monitor Circuit. Make sure to note the following:

Primary and secondary switches interlock the high-voltage control signal. (K2 relay)

Normal operation: When the K2 and K3 relays energize, power is supplied to the high-voltage transformers.

Abnormal operation: When K2 is energized and K3 is un-energized (via an opening of the monitor switch), L1 and L2 short to blow the F3 fuse and failsafe.

Figure 19 on the following page details the theory of operation of the Voltage Doubler Circuit.

		K2 HV			T1	PRIMARY AND SECONDARY
		K2 HV			T1	INTERLOCKS (CLOSED)
	F3 FUSE	RELAY			HV TRANSFORMER	CDS
	20 AMP	7	1		3	CDS
	20 AMP	7	4		1	NC
LINE VOLTAGE	(BLOWN)		4		1	NC
LINE VOLTAGE	(BLOWN)	9	3			C
(L1)		9	6			CONTROL
(L1)			6			CONTROL
		A			2	NO
					2	CDP
	+24 VDC	B			T2	CDP
	+24 VDC				T2	NC
					HV TRANSFORMER	C
					HV TRANSFORMER	CONTROL
					3	CONTROL
			K3 MONITOR		3	NO
					1	NO
					1
LINE VOLTAGE			RELAY
LINE VOLTAGE			7	1
(L2)				1
				4	2
				4	2
			9	3
			9	6		MONITOR SWITCH
	+24 VDC		A	6		MONITOR SWITCH
	+24 VDC		A			(OPEN)
			B			(OPEN)
			B			CDM
						CDM
				CONTROL		NC
				CONTROL		C
						C
						NO

F I G U R E 18: Monitor Circuit - shown in failsafe state.

NGC-1007 specifications

TurboChef Technologies has made a substantial impact in the commercial cooking industry with its advanced cooking equipment, and one of their standout products is the NGC-1007. The NGC-1007 is a revolutionary cooking oven designed to meet the demands of high-paced kitchens while ensuring superior cooking quality and efficiency.

One of the main features of the NGC-1007 is its high-speed cooking technology. Utilizing a combination of convection, impingement, and microwave cooking, this oven can reduce cooking times significantly while maintaining food quality. This multi-cooking method not only speeds up the cooking process but also enhances flavor and texture, making it ideal for cooking a wide variety of dishes, from pizzas to entrees.

The NGC-1007 also showcases advanced control technology, incorporating a user-friendly touch screen interface. This intuitive control panel allows chefs to easily navigate through various cooking settings and recipes, ensuring that each dish can be prepared to perfection. With programmable settings, operators can store favorite recipes and recall them at the touch of a button, improving efficiency and consistency in food preparation.

The design of the NGC-1007 reflects a commitment to reliability and durability. Built with high-quality materials, it can withstand the rigors of a bustling kitchen environment. Its compact size is perfect for establishments with limited space yet powerful enough to handle the demands of high-volume cooking.

Another key characteristic of the NGC-1007 is its energy efficiency. TurboChef has integrated innovative technology that reduces energy consumption without compromising cooking performance. This not only helps in cutting operational costs for restaurants but also aligns with sustainability goals by minimizing the environmental impact.

Furthermore, the NGC-1007 is equipped with easy-to-clean surfaces, making maintenance hassle-free. This is crucial in any busy kitchen, as it allows staff to focus on food preparation and service rather than extensive cleanup.

In summary, the TurboChef NGC-1007 is a game-changer for commercial kitchens looking to optimize their cooking processes. With its high-speed cooking capabilities, intuitive controls, durable construction, energy efficiency, and ease of maintenance, it stands out as a reliable option for chefs aiming to elevate their culinary output while managing time and resources effectively.

Turbo Chef Technologies NGC-1007 service manual Voltage Doubler Circuit Description

Models: NGC-1007

VOLTAGE DOUBLER CIRCUIT DESCRIPTION

Figure 18 shows a schematic of the Monitor Circuit. Make sure to note the following:

Primary and secondary switches interlock the high-voltage control signal. (K2 relay)

Normal operation: When the K2 and K3 relays energize, power is supplied to the high-voltage transformers.

Abnormal operation: When K2 is energized and K3 is un-energized (via an opening of the monitor switch), L1 and L2 short to blow the F3 fuse and failsafe.

Figure 19 on the following page details the theory of operation of the Voltage Doubler Circuit.

NGC-1007 specifications

VOLTAGE DOUBLER CIRCUIT DESCRIPTION

Figure 18 shows a schematic of the Monitor Circuit. Make sure to note the following:

Primary and secondary switches interlock the high-voltage control signal. (K2 relay)

Normal operation: When the K2 and K3 relays energize, power is supplied to the high-voltage transformers.

Abnormal operation: When K2 is energized and K3 is un-energized (via an opening of the monitor switch), L1 and L2 short to blow the F3 fuse and failsafe.

Figure 19 on the following page details the theory of operation of the Voltage Doubler Circuit.

NGC-1007 specifications

Primary and secondary switches interlock the high-voltage control signal. (K2 relay)

Normal operation: When the K2 and K3 relays energize, power is supplied to the high-voltage transformers.

Abnormal operation: When K2 is energized and K3 is un-energized (via an opening of the monitor switch), L1 and L2 short to blow the F3 fuse and failsafe.