ADJUSTING SPINDLE

RETURN SPRING

The spindle is automatically returned to its upper most position when the handle is released. It is recommended that the handle be allowed to slowly return to the top position after each hole has been drilled in the material. This spring has been properly adjusted at the factory and should not be disturbed unless absolutely necessary. To adjust the return spring, proceed as follows:

DISCONNECT MACHINE FROM POWER SOURCE.

1.Loosen nuts (B) and (E) Fig. 27. Make sure spring housing (A) stays engaged with head casting.

2.While FIRMLY HOLDING spring housing (A) Fig. 27 pull out housing and rotate it until boss (D) is engaged with the next notch on the housing. Turn the housing counterclockwise to increase or clockwise to decrease spring tension. Turn nut (E) until it contacts spring housing (A), then back nut (E) out a 1/4 turn from spring housing (A). Tighten nut (B) against nut (E), to hold the housing in place. IMPORTANT: Inside nut (E) should not contact spring housing (A) when tightened.

D

A

E

B

Fig. 27

OPERATION

Your drill press is to be used with drill bits with a shank of 1/2" or less in diameter. The following will give the inexperienced operator a start on common drill press operations. Use scrap material for practice to get a feel of the machine before attempting regular work.

The use of accessories and attachments not recommended by Delta may result in risk of injury.

IMPORTANT: When the workpiece is long enough it should always be positioned on the table with one end against the left side of the column, as shown in Fig. 28. This prevents the workpiece from rotating with the drill bit or cutting tool, causing damage to the workpiece or personal injury to the operator. If it is not possible to support the workpiece against the column, the workpiece should always be fastened to the table using clamps or a vise.

Fig. 28

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Delta DP350 instruction manual Operation, Adjusting Spindle Return Spring
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DP350 specifications

The Delta DP350 is a powerful and versatile device known for its robust features and advanced technologies, making it an ideal choice for various applications in both commercial and industrial settings. With its sleek design and user-friendly interface, the DP350 stands out as a reliable solution for professionals seeking efficiency and performance.

One of the main features of the Delta DP350 is its impressive power output capabilities. Designed for demanding applications, it offers a robust wattage rating that ensures it can handle heavy loads and operate various devices seamlessly. This power output is complemented by its energy efficiency, minimizing operational costs while maximizing productivity.

The device incorporates cutting-edge technologies, including a state-of-the-art digital control system. This system allows for precise monitoring and adjustment of power parameters, ensuring optimal performance under varying load conditions. Additionally, the DP350 features an advanced cooling mechanism, which enables it to operate continuously without overheating, thereby extending its lifespan and reliability in critical environments.

Another noteworthy characteristic of the Delta DP350 is its extensive connectivity options. It supports multiple communication protocols, enabling seamless integration with other systems and devices. This flexibility is essential for modern setups where interoperability is crucial. Furthermore, the DP350 is equipped with smart grid technology, making it compatible with renewable energy systems, which aligns with the growing trend toward sustainability.

Safety is a paramount concern with the Delta DP350, which comes with comprehensive protection features. These include overload protection, short-circuit prevention, and thermal protection, ensuring that the device operates safely under all conditions. Additionally, the user-friendly display provides real-time information on operational status, making it easy for users to monitor performance at a glance.

The Delta DP350 is also designed for durability and resilience in harsh environments, with a robust casing that can withstand external factors such as dust and moisture. This makes it suitable for a variety of industrial applications, from manufacturing to telecommunications.

In summary, the Delta DP350 combines power, efficiency, and advanced technology in a user-friendly package. Its impressive features, including digital control, extensive connectivity, and reliable safety measures, make it an excellent choice for professionals looking to enhance their operations. Whether for industrial use or commercial applications, the DP350 delivers the performance and reliability needed to succeed in a competitive landscape.
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