Killark BL-90-2 3/4-inch Male/Female 90-Degree Aluminum Elbow Instruction Manual

Introduction

This manual provides essential information for the proper installation, application, and maintenance of the Killark BL-90-2 3/4-inch Male/Female 90-Degree Aluminum Elbow. This fitting is designed to facilitate a 90-degree change in direction for electrical conduit runs, ensuring secure and reliable connections in industrial and hazardous location environments. Adherence to these instructions is crucial for safe and effective operation.

Safety Information

Always observe the following safety precautions during installation and maintenance:

• Qualified Personnel: Installation and maintenance must be performed by qualified and authorized personnel only.
• Disconnect Power: Ensure all power to the electrical system is disconnected and locked out before beginning any work.
• Proper Tools: Use only appropriate tools for installation to prevent damage to the fitting or injury.
• Environmental Suitability: Verify that the product is suitable for the specific environmental conditions of the installation site, including any hazardous location classifications.
• Local Codes: Adhere to all national and local electrical codes and regulations.

Product Overview

The Killark BL-90-2 is a robust conduit elbow featuring a male NPT (National Pipe Taper) threaded end and a female NPT threaded end, allowing for a direct connection to various conduit components. Its 90-degree bend is designed for efficient routing of electrical conductors.

Image Description: A silver-colored Killark BL-90-2 3/4-inch male/female 90-degree aluminum elbow is shown against a white background. The elbow features a female threaded opening on one end and a male threaded extension on the other, both designed for 3/4-inch conduit. The 90-degree bend is clearly visible, and the Killark brand name is embossed on the fitting's surface.

Installation

Follow these steps for proper installation of the BL-90-2 elbow:

1. Preparation: Ensure the ends of the conduits or fittings to be connected are clean, free of burrs, and properly threaded.
2. Thread Sealant: Apply an appropriate thread sealant or compound to the male NPT threads of the elbow and the mating conduit/fitting. This helps ensure a watertight and secure connection.
3. Connection: Carefully thread the male end of the BL-90-2 elbow into the female conduit/fitting. Then, thread the female end of the elbow onto the male conduit/fitting.
4. Tightening: Hand-tighten the connections, then use a wrench to tighten further until snug. Avoid over-tightening, which can strip threads or damage the fitting. Refer to manufacturer specifications for torque values if available.
5. Alignment: Ensure the elbow is properly aligned to maintain the integrity of the conduit run and prevent strain on connections.
6. Inspection: After installation, visually inspect all connections to confirm they are secure and properly sealed.

Application Considerations

The Killark BL-90-2 elbow is specifically designed for:

• Industrial Environments: Suitable for general industrial applications where robust conduit fittings are required.
• Hazardous Locations: Engineered to meet standards for use in classified hazardous locations, providing reliable performance in challenging conditions.
• Conduit Systems: Integrates seamlessly into 3/4-inch rigid metallic conduit (RMC) or intermediate metallic conduit (IMC) systems.

Maintenance

Regular inspection and maintenance ensure the longevity and safety of the BL-90-2 elbow:

• Periodic Inspection: Annually, or more frequently in harsh environments, inspect the elbow and its connections for signs of corrosion, physical damage, or loosening.
• Cleaning: Clean the exterior of the fitting as needed using a damp cloth. Avoid abrasive cleaners or solvents that could damage the aluminum finish.
• Re-tightening: If any connections appear loose, ensure power is disconnected and re-tighten them to the appropriate torque.

Troubleshooting and Inspection

While the BL-90-2 elbow is a passive component, issues can arise from improper installation or environmental factors. Conduct the following inspections if concerns arise:

• Loose Connections: If electrical continuity issues or physical instability are observed, check all threaded connections for tightness.
• Corrosion: Inspect the aluminum surface for signs of excessive corrosion, which may indicate an unsuitable environment or compromised protective coating.
• Physical Damage: Look for cracks, dents, or deformation that could compromise the integrity of the conduit system.
• Environmental Degradation: In hazardous locations, ensure seals (if external to the elbow) remain intact and the fitting shows no signs of degradation from chemicals or extreme temperatures.
• Replacement: Any elbow showing significant damage, severe corrosion, or compromised threads should be replaced immediately by qualified personnel.

Specifications

Warranty Information

Specific warranty details for the Killark BL-90-2 elbow are not provided within this manual. For comprehensive warranty information, please refer to the official Killark website or contact Killark customer service directly.

Support

For technical assistance, product inquiries, or further support regarding the Killark BL-90-2 elbow, please visit the official Killark website or contact their customer support department. Contact information can typically be found on the manufacturer's official web portal.