Diesel Engine Fire Pump 30 HP – Backup Fire Pump Unit

A diesel engine fire pump is the backup for the electric main fire pump. Fires often come with power failures, and a pump that needs electricity may stop just when it is needed. A diesel pump does not depend on the grid, because the engine drives the pump directly, and it can run as long as it has fuel. This 30 HP unit pairs a diesel engine with a fire pump on a common base. The engine starts automatically from batteries when the controller senses a drop in pressure, and the pump pushes water into the fire system. A fire pump engine normally has two battery sets, so if one fails, the other can start the engine. Standards such as NFPA 20 also ask for a fuel tank of at least one gallon per horsepower, plus allowance for expansion and sump volume, so the engine can run for a long time. The engine rating must suit the site’s height and temperature, so tell your supplier where it will be installed.

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Diesel Engine Fire Pump 30 HP – Key Features

• Works without mains power: engine driven for backup duty
• Automatic start on a pressure drop
• Battery starting with two battery sets on many units
• Fuel tank sized for long running
• Pairs with an electric main pump and a jockey pump

Diesel Engine Fire Pump 30 HP – Technical Specifications

• Type: Diesel engine driven fire fighting pump set
• Engine power: 30 HP. Check the rating at your site’s height and temperature
• Pump type: usually horizontal centrifugal. Check your model
• Rated flow and pressure: depend on the pump model. Please check the data plate
• Starting: electric starter with batteries and an automatic controller
• Fuel tank (typical standard guidance): at least 1 gallon per HP, plus 5% for expansion and 5% for sump. Check your unit
• Standards: NFPA 20, UL or FM listing on many models. Check the label

Who Should Buy This Pump?

• Buildings and malls with a sprinkler system
• Factories and industrial estates with unstable power
• Hospitals, hotels and campuses
• Fuel depots and warehouses
• Projects that need a backup to the electric fire pump

Why a Diesel Backup Is Important

An electric fire pump depends on the grid or a generator. If both fail, the pump stops. A diesel engine pump gives you an independent source of power. That is why fire codes for large or high risk buildings often ask for a diesel pump, or a second power source, in addition to the electric pump.

Installation and Usage Guide

• Install in a ventilated pump room, with good air for the engine and a safe exhaust outlet
• Connect the discharge and suction as the pump design shows
• Fit the batteries and keep them charged
• Fill the fuel tank and keep it full
• Run it at least weekly, and keep a service record
• Installation should be done by a qualified fire pump contractor

Frequently Asked Questions

When does the diesel pump start?
When the pressure falls and the electric pump has not started, or when the power fails.

Why two batteries?
If one battery set fails, the other can still start the engine.

What is the fuel tank size?
Standards ask for at least 1 gallon per HP, plus allowances. Check your unit.

How much water does it deliver?
It depends on the pump model. Check the data plate.

How often should I test it?
Weekly run tests are common. Follow your local rules.

Can it be the only pump?
Some sites use it as the main pump. Ask your designer.

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