Troubleshooting | 119
Model FT3
Troubleshooting
Troubleshooting CAL-V™
If the FT3 meter fails a CAL-V™ Calibration Validation test, follow the steps below:
1. Flow rate in the pipe:
• Run the test again under a higher flow rate if possible.
2. The sensor may be dirty or damaged:
• Visually inspect the meter for damage. If damage is found, meter may need to be serviced.
Contact Fox Thermal Technical Assistance at 831-384-4300 for more information.
• Try cleaning the sensor and try the test again under higher gas flow conditions.
3. If the meter continues to fail, contact Fox Thermal Technical Assistance at 831-384-4300 for
more information.
Troubleshooting Zero CAL-CHECK
™
If the FT3 Meter fails a Zero CAL-CHECK
™
Calibration Validation test, there are a few reasons that
could be the cause:
1. The sensor may be dirty or damaged
• Visually inspect the meter for damage. If damage is found, meter may need to be serviced.
Contact Fox Thermal technical assistance at 831-384-4300 for more information
• Try cleaning the sensor and try the test again
• If the meter fails again, move to #2
2. The sensor may not be properly covered/isolated
• Out-of-pipe:
• Wind currents (fans in room included) could be affecting the sensor
• For best results, be sure to use the factory-supplied PVC sensor cover (see Fig. 4.5 on
Page 79)
• If the factory-supplied PVC sensor cover is unavailable, use a clean dry plastic beverage
bottle
• In Pipe:
• If using the retractor, be sure that the shut-off valve has been closed
• Make sure that there is a "no flow" or zero flow condition on the meter's sensor
• Try the test again
• If the meter fails again, move to #3
3. The meter may not have stabilized properly
• Make sure the meter is not being affected by vibrations or other movement
• Allow the meter to stabilize without being moved or touched for 15 minutes
• Try the test again
• If the meter continues to fail, contact Fox Thermal technical assistance at 831-384-4300
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