On occasion, you may need to troubleshoot your Defender or Definer primary piston provers. A few known fixes can be simple and easy to perform. The list below outlines some tips and best practices:
Avoid a “sticky” piston:
- Keep the ports covered when the unit is not in use. This prevents condensation and contamination from occurring within the cell.
- Perform calibrations in a clean environment whenever possible.
- Sending your unit in for annual maintenance will prevent build-up of residue in the cell.
- If inlet filtration is required, we recommend using a 5 micron filtration device on the gas flow source.
- If the piston is consistently not functioning properly (i.e., getting stuck or not moving smoothly), it likely requires factory service. Attempting to fix the piston on your own will void the manufacturer’s warranty.
Turning on your Defender or Definer:
- If you’re having trouble turning the unit on, press the power button and let go as soon as there is any response from the unit (i.e., light, sound, screen backlight, etc.).
If your unit is not measuring flow, perform a “Flip Test”:
- Open both ports and set the unit to measure continuously. When the valve makes a clunking noise, turn it upside down until the valve closes again and clicks. Flip it back over and see if the DryCal unit created a reading. If the unit reads “Out of Range”, you are flipping the unit over too quickly.
How do I perform a leak test?
- Navigate through the menu to the leak test option by selecting setup and then diagnostics. Invert the unit, cap power port under test, press enter and return the unit to upright.
Still have questions about your DryCal battery, accurate measurements, or other troubleshooting items? Click here to learn more tips specific to the DryCal Defender and Definer units.
Let’s talk DryCal!
Talk with one of our experts to get your questions answered and see how we can help you solve your calibrator pain points.