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CHAPTER V
SYSTEM MAINTENANCE
GENERAL
This chapter will detail the basic information necessary for the proper maintenance of the Pyro-Chem Kitchen Knight II Restaurant Fire Suppression System. However, before attempting any system maintenance, it is necessary to attend a Factory Certification Training Class and become certified to install and maintain the Pyro-Chem Kitchen Knight II Restaurant Fire Suppression System. Because it is difficult to completely understand every aspect of an intricate pre-engineered system simply by reading the Technical Manual, Pyro-Chem will not be responsible for system maintenance performed by any non-certified person(s).
SEMI-ANNUAL MAINTENANCE
1. Check that the hazard area has not changed.
2. Check that the system has not been tampered with, i.e., nozzles removed, nozzles not aimed properly, piping not supported properly, blow off caps in place.
3. Check the entire system for mechanical damage.
4. Check all nozzle orifices to make certain they are not plugged. Replace blow off caps or O-ring if necessary.
CAUTION: Before continuing, remove the cover from the control head and insert the safety pin in the hole in the slide plate above the latching arm. This will secure the system, preventing accidental discharge.
5. Disconnect the control head or pneumatic tubing from the valve cap assembly of each agent cylinder. Remove the carbon dioxide pilot cartridge in the control head. Remove the safety pin from the slide plate. Actuate the control head to ensure it is functioning properly. Make certain the gas shut-off valve and remote pull station are functioning properly.
6. Inspect the fusible link detectors and pulley elbows for excessive grease buildup. Clean or replace links or elbows if necessary.
7. Reinstall the carbon dioxide pilot cartridge, reconnect the control head and replace the control head cover and nylon tie.
8. Inspect the cylinder pressure. Tap the gauge lightly to ensure the needle is moving freely.
ANNUAL MAINTENANCE
1. Inspect as per semi-annual maintenance instructions. Do not reconnect control head at this time.
2. Disconnect the discharge piping from the valve outlet. Using air or nitrogen, blow out the piping. Replace all nozzle caps.
3. Remove the cylinder to verify the fill weight as shown on the nameplate.
4. Replace the carbon dioxide pilot cartridge.
5. Replace all fusible link detectors.
6. Reconnect the control head. Replace the control head cover and nylon tie.
12-YEAR MAINTENANCE
Along with the required annual maintenance requirements, the tanks must be removed from the system, properly discharged, and hydrostatically tested per the requirements of NFPA-17A. The tank should be refilled with fresh agent.
