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MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
6 SYSTEM INSPECTION AND MAINTENANCE
Each Janus Fire Systems® Engineered Dry Chemical Fire Extinguishing System must be properly inspected
and maintained at regular intervals by competent individuals qualified in the installation and testing of dry
chemical extinguishing systems and thoroughly trained in the functions they are expected to perform.
It is the owner’s responsibility to coordinate and schedule inspection and maintenance and verify that
individuals performing the functions are properly trained as required by NFPA 17.
6.1 Monthly Inspection
Inspection is a quick check of the system and is intended to give reasonable assurance that the system is fully
charged and operational. is is done by reviewing the system to check that it has not been tampered with,
all components are in place, no physical damage exists or no condition exists that could prevent operation.
is section does not cover inspection requirements of the detection, control, and releasing system. Consult
NFPA 72 and the appropriate technical manual for instructions on performing inspection.
e individual conducting the inspection should be familiar and knowledgeable with the system components
and the intended operation of the system.
e system should be inspected on monthly intervals or more frequently if conditions dictate, with records
maintained identifying as a minimum the person performing the inspection, date of inspection, observations,
and results of the inspection noting any action to be taken.
A minimum of the following items should be checked during inspection:
• Visually verify that the control panel is free of trouble or alarm conditions.
• Check each cylinder bracket to make certain the cylinder is securely mounted.
• Check the pressure gauge on each cylinder to determine that cylinder pressure is in the correct range for
the temperature.
• Check to make certain the discharge piping is properly connected to the discharge outlet.
• Check that all actuators are properly installed on the cylinder valves: electric valve actuator on single
cylinders/remote nitrogen cylinders and pneumatic valve actuators on any secondary cylinders.
• Check the manual valve actuator to be certain the ring pin is properly installed and sealed in place.
• Check that all pilot actuation piping is properly connected.
• Visually inspect all components for any signs of damage, denting, corrosion, etc.
• Check the nozzles to make sure they are properly aimed, securely connected to the pipe, free of debris,
not painted, and that no objects are blocking their discharge pattern.
• Visually check detectors to make certain they are in place, not damaged, not coated with dust, dirt or
debris, not painted, and not obstructed.
Section 6 System Inspection and Maintenance
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