LIM Testing

MainPro specializes in Line Isolation Monitor testing. Contact MainPro today to schedule your LIM Testing. We will make sure your operating room electrical systems are safe and in compliance with NFPA 99.

Annual LIM Testing

NFPA 99 defines a Line Isolation Monitor (LIM) as an electrical test instrument and requires that they be tested not less than annually for acceptable performance. This test is accomplished during our Annual Inspection process.

Monthly LIM Testing

NFPA 99 also requires that the LIM test switch be actuated to test the LIM circuit, visual and aural alarm indicators monthly. However, for a LIM with self-test and self-calibration capabilities, the test needs only to be performed annually. If all the digital LIMs in use at your facility are capable of self-test and self-calibration, there is no need for you to perform a monthly test of each LIM. The annual test of the LIM is included in our Annual Inspection process.

NFPA 99 Codes - Line Isolation Monitor Testing - Annual Inspection Requirement. Contact (859) 592-1890 to schedule you LIM Testing.NFPA 99~3.3.95 Line Isolation Monitor. A test instrument designed to continually check the balanced and unbalanced impedance from each line of an isolated circuit to ground and equipped with a built-in test circuit to exercise the alarm without adding to the leakage current hazard. (ELS) NFPA 99~6.3.3.1.5 Test Equipment. Electrical safety test instruments shall be tested periodically, but not less than annually, for acceptable performance. NFPA 99~6.3.3.3.3 Line Isolation Monitor Tests. The LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch (see 6.3.2.9.3.6). For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months. Actuation of the test switch shall activate both visual and audible alarm indicators.

NFPA 99 Codes – Line Isolation Monitor Testing – Annual Inspection Requirement. Contact (859) 592-1890 to schedule you LIM Testing.

The monthly LIM Test should be documented for presentation to your accreditation agency during your audit.  Use our Customer Portal to record your monthly self-tests and store your documentation.  For more information about our Customer Portal, see the FAQs.

Modified Isolated Power System Testing

NFPA 99 also requires the Line Isolation Monitor (LIM) to be tested after any repair or renovation to the associated panel or circuit components. These tests are accomplished during our Modified Panel Inspection process.

NFPA 99 Codes - Line Isolation Monitor Testing - Modified Panel Inspection Requirement. Contact (859) 592-1890 to schedule you LIM Testing.NFPA 99~6.3.3.1.1.4 Whenever the electrical system has been altered or replaced, that portion of the system shall be tested.

NFPA 99 Codes – Line Isolation Monitor Testing – Modified Panel Inspection Requirement. Contact (859) 592-1890 to schedule you LIM Testing.

 

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