NMFIRE 500 GPM Electric Motor Driven Split Case Fire Pump UL FM

NMFIRE 500 GPM Electric Motor Driven Split Case Fire Pump

Fire pumps are used to supply water for automatic sprinkler systems, standpipes or fire hydrants. 

NMFIRE Split case are pumps are rated 300, 450, 500, 750, 1000, 1250, 1500, 2000, 3000, 

3500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500 and 8000 GPM. All fire pumps are rated

at 40 pounds per square inch or more of boost.

Fire Pumps of the type described shall meet the following basic requirements: 

1. Each pump is to be tested hydrostatically for not less than 5 miniutes. The test pressure is to be

not less than 1.5 times the max. working pressure of the pump, but in no case less than 250 psi

 (1724 kpa).

2. A pump shall develop not less than 65 percent of rated total head when discharging at 1.5 times 

rated capacity. The maximum net pressure for a fire pump shall not exceed 140 percent of rated 

head.

3. The maximum pump brake horsepower shall not exceed the HP rating its driver, including service

factor. 

ELECTRIC MOTORS: 

NFPA 20 requires all fire pump motor drivers to be rated for continuous duty and sahll not be used at

voltages in excess of 110% of rated voltage. At rated voltage and frequency, the full load ampere rating

shall not be exceed (excepts as allowed by the service factor on motor nameplate) under any pumping

condition.

MOTOR CONTROLLERS:

The motor control panel equipment shall be factory assembled, wired, tested, and spcifically approved for

fire pump service. Combined manual and automatic type to incorporate  the following:

a. Isolating switch

b. Externally operable, quick breaking disconnect

c. Time delay locked motor over current protection set at 600% of motor full load current for 20 seconds.

d. Pressure switch with high and low pressure setting

e. Motor starter of the magnetic type

f. Pilot lamp to indicate circuit breaker closed and power available

g. Phase revversal visible indicator pilop lamp.

STANDARD EXPORT SEAWORTHY PACKING