4.B POSSIBLE EMERGENCIES AND

RECOMMENDED ACTIONS

WARNING

If gas or electricity is off due to an emergency, only a qualified installer, service agency or gas supplier should turn it back on. Doing it yourself could result in damage, injury or death.

1.Possible Emergency: Smelling gas or other unfamiliar smell; or not knowing what may be wrong or that to do about it.

ACTION: For your safety –

a.Leave your house or building immediately.

b.Go to a neighbor’s or another building.

c.Use their telephone.

d.Call your gas supplier. Tell them you smell gas and give them your name and address.

e.If you cannot reach gas supplier, call fire department.

WARNING

Three important things not to do –

1.Don’t try to light any gas appliances.

2.Don’t touch any electrical switches

3.Don’t use the telephone in your house or

building.

Any of the above may cause a spark which could cause a fire or explosion resulting in damage, personal injury or death.

2.Possible Emergency: Your thermostat is set below room temperature; yet even though the blower is on, the air coming from your room registers continually gets hotter.

ACTION:

a.Turn room thermostat to its lowest or OFF setting.

b.If you can do so safely, turn gas off. Use manual shutoff valve at gas meter or on propane (LP) gas tank. You may need a wrench or tools. If you can safely turn off electricity at the main

circuit panel, do so. If you cannot do these things safely, leave your home or building immediately. Call your gas supplier or fire department from a neighbor’s phone for help.

c.Your furnace should now be off. If it is, call your service technician or gas supplier.

d.If your furnace continuers to run, leave your home or building immediately. Call your gas supplier or fire department from a neighbor’s phone for help.

3.Possible Emergency: Your thermostat is set above room temperature. The blower is on but the air coming from your room registers is hot, then cold, then hot, then cold in a continuing cycle. This condition indicates lack of airflow through furnace.

ACTION:

a.Make sure air filter is clean and installed correctly.

b.Check that registers and return air grilles are open and unobstructed.

c.If condition continues, call your local qualified service technician or gas supplier.

4.Possible Emergency: While furnace is operating, you smell unfamiliar odors that go away when furnace is off.

WARNING

Unfamiliar odors may mean gas or aldehydes are present which could result in damage, injury or death.

ACTION:

a.Turn thermostat to its lowest or OFF setting.

b.Move gas valve control level to OFF.

c.If blower is not operating, immediately turn of electricity to furnace using shutoff device near furnace or at main circuit panel.

d.If blower is operating, wait five minutes for furnace to cool down and then turn off electricity to furnace using shutoff device near furnace or at main circuit panel.

e.Call your local qualified service technician or gas supplier.

5.Possible Emergency: Main electrical circuit breaker for furnace cannot be reset without tripping again or new fuses continue to blow.

ACTION:

a.Move gas valve control level to OFF.

b.Call your local qualified service technician or gas supplier.

Manual 2100-279 Page 5

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3Com 43506 operating instructions Possible Emergencies Recommended Actions
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43506 specifications

The 3Com 43506, also known as the 3Com SuperStack 3 Switch 4400, is a robust networking solution designed for small to medium-sized enterprises that require a reliable and efficient way to manage their network traffic. This managed switch offers a variety of features and technologies that cater to both performance and flexibility, making it a popular choice in the industry.

One of the standout features of the 3Com 43506 is its ability to support Layer 2 and Layer 3 switching. This means that it can efficiently manage data packets at both the data link and network layers, ensuring optimal traffic management and routing. This versatility is essential for organizations that need to segment their networks and control the flow of information between different departments or units.

The 3Com 43506 utilizes advanced switching technology that includes high-speed Ethernet connections, specifically 10/100/1000 Mbps rates on all ports. This enables the switch to handle large volumes of traffic without bottlenecks, making it ideal for bandwidth-heavy applications such as video conferencing or large file transfers. With its multiple Gigabit Ethernet ports, users can also connect high-performance servers and storage devices directly to the switch, enhancing overall network speed and reliability.

Quality of Service (QoS) is another significant feature of the 3Com 43506. This technology allows network administrators to prioritize certain types of data, ensuring that critical applications receive the bandwidth they need for optimal performance. For organizations that rely on voice-over-IP (VoIP) or real-time video services, QoS is invaluable for maintaining clear audio and video quality.

In terms of management, the 3Com 43506 offers comprehensive support for Simple Network Management Protocol (SNMP) and web-based management interfaces, providing network administrators with the tools to effectively monitor and configure the switch. The device also supports virtual LANs (VLANs), which enhance network security and efficiency by allowing the segmentation of network traffic.

Moreover, the 3Com 43506 is designed with reliability in mind. It features dual power supply support for redundancy, ensuring continued operation even in the event of a power failure. Its fanless design contributes to quiet operation, making it suitable for deployment in office environments where noise levels must be kept to a minimum.

Overall, the 3Com 43506 is a versatile and feature-rich switch that meets the demands of modern networking environments. Its combination of performance, advanced management features, and reliability makes it an excellent choice for businesses looking to enhance their network capabilities.
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