Unlike other industries, fire pump engines will not shut down on oil level and water temperature failures. Engine overheating can come from a variety of problems from loss of supply water like above, clogged strainers, ruptured heat exchangers, etc. Checking the water level and strainers before starting is an NFPA 25 requirement. Verifying adequate cooling supply with the cooling pressure gauge while running is also an NFPA 25 requirement.
People standing around a diesel engine might also want to keep an eye on the water temperature gauge while it's running. With a set of ear muffs on, it may be hard to hear a HIGH WATER TEMPERATURE alarm on the controllers with the smaller piezoelectric horns while standing next to the engine. Even if standing in front of a controller, I've encountered dozens of older controllers with burned out lamps and defective alarm bells, meaning you won't hear or see an alarm standing directly in front of the controller, much less across a pump room while standing next to the engine. Some of the alarm bell failures were nothing more than corroded contacts from never being used, others were burned out coils and needed to be replaced. Failure to TEST THE ALARMS AND SAFETIES SEMIANNUALLY per NFPA 25 can result in relay and alarm bell contacts building up corrosion and the failures going un-noticed,
Being around an engine like this when it blows can have severe personal injury consequences.
Unlike other industries, fire pump engines will not shut down on oil level and water temperature failures. Engine overheating can come from a variety of problems from loss of supply water like above, clogged strainers, ruptured heat exchangers, etc. Checking the water level and strainers before starting is an NFPA 25 requirement. Verifying adequate cooling supply with the cooling pressure gauge while running is also an NFPA 25 requirement.People standing around a diesel engine might also want to keep an eye on the water temperature gauge while it's running. With a set of ear muffs on, it may be hard to hear a HIGH WATER TEMPERATURE alarm on the controllers with the smaller piezoelectric horns while standing next to the engine. Even if standing in front of a controller, I've encountered dozens of older controllers with burned out lamps and defective alarm bells, meaning you won't hear or see an alarm standing directly in front of the controller, much less across a pump room while standing next to the engine. Some of the alarm bell failures were nothing more than corroded contacts from never being used, others were burned out coils and needed to be replaced. Failure to TEST THE ALARMS AND SAFETIES SEMIANNUALLY per NFPA 25 can result in relay and alarm bell contacts building up corrosion and the failures going un-noticed,Being around an engine like this when it blows can have severe personal injury consequences.
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