Q: is this continuntity test is also called the dielectric test? also is this a nfpa 10 requirement?
A: No - a continuity test in not also called a dielectric test.
The Brooks NCHT CO2 Hose Continuity Tester is used to determine if an electrical path can be established between two points and a dielectric test is performed to determine the effectiveness of its insulation.
Is there a follow up question that we can perhaps attempt to answer? We take deep pride in our technical expertise, as we know it separates us from our competition, so don't hesitate to ask.
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if we can assist you by answering further questions or with entering this order and please let us know if there is anything else we can help with.
Q: Could I know Why we do test for CO2 Fire extinguisher hose, I mean Brookes NCHT test, ? and what is different between hose of Dry powder and Foam ?
A: Thank you for your question.
The completeness and accuracy of this answer will vary depending on where you are located. Your local AHJ(Authority Having Jurisdiction) or Fire Marshall will set these standards, but as an example, here are a couple regulations from the state of California, for servicing fire extinguishers. This should give you a better understanding of why there is a continuity test, and what to do. Please also reference NFPA 10 for further information.
575.15. Conductivity Test. (a) An annual conductivity test shall be conducted on all carbon dioxide hose
assemblies. Hose assemblies found to be nonconductive shall be replaced.
(b) Carbon dioxide hose assemblies that pass a conductivity test shall have the
test information recorded on a suitable metallic label or equally durable material
that has a minimum size of ½ in. x 3 in. (1.3 cm x 7.6 cm). The label shall be
affixed to the hose by means of a heatless process. The label shall include the
following information:
(1) Month and year the test was performed, indicated by perforation, such as is
done by a hand punch.
(2) Initials and EE# of person performing the test.
592.2. Hose Assemblies.
(a) A hydrostatic test shall be performed on extinguisher hose assemblies which
are equipped with a shutoff nozzle at the end of the hose and high-pressure and
low-pressure accessory hoses used on wheeled extinguishers.
The test interval shall be the same as specified for the extinguisher on which the
hose is installed.
(b) Test pressures for hose assemblies shall be as follows:
(1) Carbon Dioxide - 1,250 psi
(2) Dry Chemical - 300 psi or at service pressure, whichever is higher.
(3) Accessory hose used on wheeled extinguishers shall be tested in accordance
with the manufacturer’s service manual.
(c) Hose assemblies passing the hydrostatic test shall be thoroughly dried
internally. If heat is used, the temperature shall not exceed 1500F (660 C).
Do you have any other question I may assist you with?
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Q: How can you remove swollen batteries from the tester?
A: How did the batteries become swollen?
Q: I'm not sure. A coworker gave it to me in that condition. Perry
A: I do not have a suggestion as to how to remove swollen batteries from this tester and can only imagine that they became that way by being submerged - I would just discard the tool and I would purchase a new tool as I would not trust the reading of a tool in this condition.
Q: Exactly why is the conductivity test on CO2 hoses required?
A: From the Amerex manual:
Carbon dioxide hose assemblies have a continuous metal braid that connects to both couplings to minimize static shock. A hose continuity test should be performed using a basic conductivity tester consisting of a flashlight having an open circuit and a set of two wires with a conductor (clamps or probe) at each end. (NFPA 10)
To test the metal braid is properly connected/working to minimize static electricity build-up or discharge during use.
Q: do you still have continuity test labels?
A: While we supply continuity testers as seen here:
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We would not have available labels. Can you supply me with an example of a continuity test label that you are looking to duplicate?