CSLB #976500 · State Fire Marshal #E2390 · Title 19 Certified
24/7 Emergency: (877) 256-0161Semi-annual service on two ventless hoods protected by Ansul R-102 systems, with grease cleaned from the release microswitches, the trip lever realigned and heat-exposed fusible links replaced.
Client: A restaurant kitchen with ventless hoods · Commercial kitchen with ventless hoods
The challenge
Ventless hoods have no duct to the roof, so the hood's own controls and the Ansul release have to work together: if the system fires, or a filter is missing or clogged, the cooking appliances must shut down. In this kitchen grease had built up on the microswitch contacts inside the release mechanism, which are what cut the fuel and sound the alarm.
What we did
The AUTOMAN release mechanism was disarmed and the expellant gas cartridges removed before any switch was tested.
Grease was cleaned from the microswitch contacts and the trip lever realigned, so that a release shuts off the fuel and sounds the alarm.
On the Wells control panel we tested the airflow sensors and the filter interlock switches, which shut the appliances down if a filter is removed or clogged. Wiring junctions, the exhaust fan drive and the alarm buzzer circuit were checked.
The detection line was exercised and heat-exposed fusible links replaced. The manual pull station's cable tension and seal, and the pressure of the nearby extinguishers, were checked.
Hood 1 and Hood 2 each received a State Fire Marshal semi-annual service tag under license C16-976500.
Results
Semi-annual service completed under NFPA 17A and NFPA 96.
The release, the filter interlocks and the exhaust fan were tested working together.
The kitchen did not have to close for the work.
Photos
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More of our work
Wok-line grease had seized the detection line. We replaced the cable, pulleys, brackets and fusible links, then completed the semi-annual service and filed the report.
A semi-annual inspection found the Ansul R-102 piping packed with hardened grease. We cleared or replaced every blocked fitting, flushed the lines and capped every nozzle.
Filed under: Santa Clarita ValleyConnections and interlocks for a large multi-cylinder CaptiveAire system, an internal pre-test, and Fire Department acceptance on the first inspection, ahead of the restaurant's opening.
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