Douglas Krantz - Technical Writer - Describing How It Works
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Fire Suppression

Douglas Krantz -- Fire Alarm Engineering Technician, Electronic Designer, Electronic Technician, Writer








Does the air pressure gauge and water pressure gauge show different psi? -- In the sprinkler system plumbing, the air pressure gauge and the water pressure gauge show the pressure of two different sprinkler systems. These two systems are the dry... Read More

Why Are There Waterflow Alarms When No Water is Flowing? -- Between building trades, there's a natural line of demarcation. Sprinkler pipe fitters don't like working on a fire alarm system; they...Read More

What is a Waterflow Switch? -- The fire alarm waterflow switch, a delayed action mechanical/electrical assembly, is a conventionally wired fire alarm device. The fire department reacts... Read More

What is a Dry Sprinkler Valve? -- When a fire starts burning in a building, action needs to be taken early... before the fire has grown out of control. Taking this action, sometimes before anyone even... Read More

Why Does It Seem that Dry Sprinkler Systems Only Show Low Air Pressure At Night? -- Doesn't it always seem to happen? In the middle of the night, someone's fire alarm fire alarm system sends... Read More

What Turns On a Fire Pump? -- Fire pump controller boxes are large, and the only people who should even open the controllers are authorized sprinkler... Read More

Should the Main Fire Panel Release the Fire Suppression? -- The greater number of systems controlled by one computer, the greater number of systems messed up when that one computer messes up.... Read More

Which is Worse -- Fire or Water? -- At some point a decision needs to be made, which is worse - the fire or excess water... Read More

How Can a Jockey Pump Make False Waterflow Alarms? -- It was 8:00 o'clock at night, and there I was standing in front of the fire alarm panel. The fire department had already been there and left, but because of waterflow... Read More








Popular Articles

What is a Stair Pressurization Fan (SPF)? -- In case of fire in a high rise building, an SPF uses clean outside air to pressurize the air in stairwells. The pressurized air helps people escape... Read More

How Does Class A Fire Alarm Wiring Work?-- Fire alarm systems save lives and protect property. Fire alarm systems also break down because... Read More

What's the Difference Between Class A and Class B? -- The Fire Alarm System is a Life Safety System - so the occupants of a building can escape quickly, the idea behind a Fire Alarm System is that it will provide a warning that there is a fire. The trouble is, if something is wrong with the system, like a wire is broken somewhere in the building, the Fire Alarm System... Read More

What is a Flyback Diode? -- Someone Thinks the Flyback Diode is Important. Manufacturers all over the world spend good money installing these diodes, they must think they're ... Read More

What is a Waterflow Switch? -- The fire alarm waterflow switch, a delayed action mechanical/electrical assembly, is a conventionally wired fire alarm device. The fire department reacts... Read More

What Should I Do When the Fire Alarm Sounds? -- When the alarm sounds, as caretaker for an apartment building, what should you be doing? "I would never suggest turning off the fire alarms, or in any way... Read More

What is a Fire Alarm System? -- Long ago, as earliest method of spreading the word of fire danger, people shouted "Fire!" Depending on the circumstances, people would run... Read More

What Does E=IR Really Mean? -- If it isn't just a word, and it isn't really something to be memorized in order to pass a test, what do the letters in Ohm's Law really mean?... Read More