Allied Telesis 6870 manual Introduction, Safety Notes

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SECTION 1.0: INTRODUCTION

SPEX SamplePrep Freezer/Mills are cryogenic laboratory mills that cool samples to cryogenic temperatures, and pulverize them by magnetically shuttling a steel impactor back and forth against two stationary end plugs. Since the vial is closed, the integrity of its contents is maintained: hazardous or critical samples are easily controlled, cleanup is simplified, and cross- sample contamination is eliminated. Because the vial is immersed in liquid nitrogen throughout the grinding cycle, the sample is kept at cryogenic temperatures and its key aspects preserved. These features have made SPEX SamplePrep Freezer/Mills the most effective cryogenic mills in the world. They are the “mills of last resort” for many normally ungrindable samples, or samples whose composition or structure is altered by the heat generated by conventional grinding.

Before operating the 6870 Freezer/Mill, familiarize yourself with these instructions. The Freezer/Mill is different in its principles and operation from any other laboratory mill. If you’re familiar with the mill and want to proceed directly to grinding, Section 6.0 (PRACTICAL OPERATION) on p.14 can serve as a general review of the actual operation of the mill. We suggest unpacking the mill, then going over its various features with these instructions in hand before attempting to add liquid nitrogen or grind a sample.

OPERATING CONDITIONS: Do not set up the 6870 Freezer/Mill in an insulated or confined space. The Freezer/Mill should be run on an open countertop, in ambient air. If the entire mill is chilled during operation, components like the gas cylinders can fail. This damage is not covered by the Freezer/Mill warranty.

VERY IMPORTANT: Liquid nitrogen not only makes samples brittle through severe chilling, making them “grindable,” but also cools the magnetic coil which powers the 6870 Freezer/Mill. If the mill is operated without liquid nitrogen for a period of about one minute, the coil will become very hot and may sustain permanent damage. The 6870 Freezer/Mill has a liquid nitrogen sensor that should shut down the mill when the liquid nitrogen gets too low to cool the coil. Nevertheless the nitrogen level should be visually checked during extended runs as well as topped off before every run. The Freezer/Mill warranty does not cover damage to the coil caused by operating the mill with little or no liquid nitrogen.

SAFETY NOTES:

1)Liquid Nitrogen can be hazardous. Its boiling point is -195.8oC. When working with liquid nitrogen directly or indirectly, you must wear cryogenic gloves to protect your hands. Be careful not to splash liquid nitrogen on clothes or unprotected skin. Always use cryogenic gloves when handling very cold objects or materials: sample vials, the nitrogen tank valve or hose, chilled Freezer/Mill components, etc. We also recommend safety goggles to protect your eyes.

2)Do not attempt to operate the 6870 Freezer/Mill without liquid nitrogen

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SPEX SamplePrep LLC

9.24.07

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Contents This manual is part number FREEZER/MILLTable of Contents Introduction Safety NotesTypical Sample Capacity 6870 FREEZER/MILL SpecificationsSafety Features Type of mill cryogenic impact millUnpacking Setting UP Power Switch and Control PanelElectrical Hookup Lid and Lid Latch, Coil Assembly and Coil Gate, LN Sensor Grinding Vial Sizes, Adapters, and Vial Openers Current Settings Screen Touchscreen DisplaysLogo Screen Status Screen RateStatus Screen during a run Settings Screen Settings ScreenStoring a new program STORE/RECALL ScreensRecalling a program Practical OperationAdding Liquid Nitrogen Coolant Section Putting a Sample into the Vial at Room Temperature Size of Sample PiecesPutting a Cold Sample into the Vial and Keeping it Cold Placing Vials in the Freezer/Mill Coil Putting a Very Small Sample in the Vial and Keeping it ColdEmptying the Vials Opening the VialsCleaning the Vials Checking The Liquid Nitrogen Level 6820 Auto-Fill System Description, Installation, OperationMaintenance To Arrange a Return Shipment Warranty and ServiceWarranty Product SpecificationsContacting Spex SamplePrep LLC Spex SamplePrep LLC Liberty St Metuchen, New JerseyDalston Gardens Stanmore, HA7 1BQ Great Britain Problem Cause Solution TROUBLE-SHOOTING GUIDE, page 1TROUBLE-SHOOTING GUIDE, page 2

6870 specifications

The Allied Telesis 6870 is a robust Layer 3 Ethernet switch designed for high-performance networking in enterprise environments. Incorporating advanced features and technologies, it serves as a vital component in managing complex network infrastructures, ensuring seamless connectivity, reliability, and enhanced performance.

One of the standout characteristics of the 6870 is its support for a high number of Gigabit Ethernet ports. With multiple SFP and SFP+ ports, the switch allows for flexibility in connecting various devices, while also facilitating the use of different physical media. This capability is crucial for organizations that demand versatile connection options, particularly when managing diverse networking equipment.

The switch is equipped with advanced Layer 3 routing capabilities, allowing it to perform IP routing functions in addition to standard Ethernet switching. Suitable for traffic management, the switch supports protocols such as OSPF, RIP, and static routing, enabling efficient and intelligent path selection in larger networks. This functionality is essential for optimizing bandwidth usage and maintaining an efficient data flow throughout the network.

Another highlight of the Allied Telesis 6870 is its support for VLANs (Virtual Local Area Networks). VLANs enable network segmentation, improving security and performance by isolating different segments of traffic. This capability is further enhanced by the switch's support for advanced features like Ingress/Egress Rate Limiting and Quality of Service (QoS). These features allow network administrators to prioritize critical applications and ensure that bandwidth is allocated effectively.

The switch also incorporates the innovative Allied Telesis Autonomous Management Framework (AMF), which simplifies device management and network configuration. With AMF, administrators can manage multiple switches as a single logical entity, reducing operational complexity and minimizing downtime. This technology supports zero-touch provisioning, enabling rapid deployment and configuration of network devices.

Security is another key aspect of the 6870, with features such as Access Control Lists (ACLs) and IEEE 802.1X port-based authentication. These measures help protect the network from unauthorized access and ensure that only authenticated devices can connect to the network.

In summary, the Allied Telesis 6870 is a versatile and powerful switch that meets the demands of modern enterprise networks. With its comprehensive feature set, including high-performance routing, VLAN support, and advanced management capabilities, it offers a reliable solution for organizations seeking to optimize their network infrastructure. Whether for deploying new services or managing existing traffic, the 6870 stands out as a formidable choice for network administrators.
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