General Hazard Information
In order to prevent injury or death, all machines equipped with a AVSpare Product Link system are required to have a warning label that is clearly posted in the cab:
This machine is equipped with a AVSpare Product Link radio communication device which must be deactivated within 6.0 m (20 ft) of a blast zone. Failure to do so could result in serious injury or death.
If the machine is required to work within 6.0 m (20 ft) of a blast area, then the operator must take one of the following precautions:
- Disconnect the Product Link module from the power source by disconnecting the wiring harness at the Product Link module.
- Temporarily remove the Product Link module from the machine.
- Add an ON/OFF switch in order to allow the Product Link module to be turned off from the cab.
Consult your AVSpare Dealer if there are any questions.
This warning in no way supersedes or allows deviation from the published requirements and regulations found in "Title 30 of the Code of Federal Regulations (CFR)". Every mine operation should conduct their own hazard assessments and meet all of the requirements of "Title 30 of the Code of Federal Regulations (CFR)" in order to ensure safe operation in the storage, transportation, loading, and blasting of explosives.
The following Product Link specifications are provided to aid in conducting hazard assessments and ensuring compliance with all local regulations.
Product Link Transmitter Power: 5 Watts
Operating Frequency Range: 148 - 150 MHz
General Troubleshooting Information
As a reference, a typical system schematic is included in the installation section of this manual. Also, many AVSpare machines have a published Electrical System Schematic that depicts a Product Link installation. Refer to these schematics if a troubleshooting procedure instructs you to "REPAIR THE HARNESS". The continuity checks and resistance checks should be performed at the connectors in order to locate a failure in the harness. At a component connector, always check the ground circuit. Less than five ohms of resistance is required from the ground contacts to frame ground. A problem can be incorrectly diagnosed, if an excessive resistance that is greater than 5 ohms is present in the ground circuit. During a troubleshooting procedure, you should inspect all component and harness connections before a component is replaced. If these connections are not clean and tight, the connection can cause an electrical problem.
The problem can be permanent or the problem can be intermittent. Ensure that the wires are pushed into the connectors completely. Make sure that the connections are tight before other tests are performed. A failure of an electrical component can cause a failure of another component or a failure can be caused by the failure of other components. You should always attempt to find a failure and you should correct the cause of a failure in the electrical system before you replace a component.