MainPro Services Meets All NFPA Requirements

According to the standard for Health Care Facilities, NFPA-99 – “The Line Isolated Monitor (LIM) circuit shall be tested at intervals of not more than one month by activating the (LIM) test switch. 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.”

Appointments available

Quick Response Time…

Call today – Conveniently located in the tri-state area Ohio / Kentucky / Indiana Appointments available, with factory certified technicians available throughout the U.S.

Testing and Repair …

Meets all code requirements under NFPA 99, “Health Care Facilities” for six month and annual testing Certifications for new installations and existing units; trouble shooting and retro-fitting of all major systems, including: Square D, Bender, G.E.,
C.E.S. and Post Glover

In-Service Training …

Valuable for hospital personnel – Ensures all testing and Joint Commission
requirements are being met
How isolated power works, what to do in the case of an alarm and how to troubleshoot problems

Contact us for the Testing or Repairing service consultation


  • Testing can be completed on newly constructed or existing operating rooms
  • All testing is completed by Certified Technicians that comply with NFPA 99 Health Care Facilities and NFPA 70 National Electrical Code
  • Technicians are located nationwide for your service requirements
  • After completion of successful testing; a written certification is given to the hospital/facility to ensure the systems comply with required codes, good installation practices; and specifications.
  • Factory Start-Up Commissioning Test and Inspection
  • Annual Inspections


  • MainPro technicians train your onsite staff for LIM function, monitoring, maintenance, and testing logs.
  • Requirements by NFPA 99 will be included in the training handbook for references.
  • A training session is conducted with your hospital / facility medical and maintenance personnel on how to handle LIM equipment alarms.
  • The Field Test Reports and Maintenance log books will be reviewed.
  • This training session will also cover any questions or concerns about your Line Isolation Monitor.
  • A training video, designed to comply with the NFPA 99 requirements, is available on request.
  • After the training session, technical support is just a phone call away.

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