Fire Pump Pressure Switch Setting

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Fire pump pressure switch setting.

To assure that the fire pump runs when it is supposed to and the jockey pump won t interfere with fire protection the fire pump sensing system should be set up in this arrangement. Examples of fire pump settings. The fire pump system when started by pressure drop should be arranged as follows. Depending on the type of pressure switch the fire pump would come on at 130 135 psi.

Fire pump house completely information all pump line in hindi main pump jocky pump diesel engine duration. 60 psi from city maximum static iii. Let s say the pressure is 150 psi. Jockey pump stop 115 psi 50 psi 165 psi iv.

The pressure operated switch in the controller should be sensitive enough to permit this range to be as short as 10 to 13 psi. 1 the jockey pump stop point should equal the pump churn pressure plus the minimum static supply pressure. Nfpa 20 covers the settings. Fire fighter vinod choudhary 33 372 views 29 33.

Nfpa 20 s pressure switch settings for fire and jockey pump settings are required to be relatively close to help eliminate water hammer on start up. Fire pump stop 115 psi 50 psi 165 psi vi. 1 the jockey pump stop point should equal the pump churn pressure plus the minimum static supply pressure. Start the fire pump and note the maximum pressure on the discharge gauge.

Jockey pump start 165 psi 10 psi 155 psi v. Pressure settings for fire pump controllers. Jockey pump would be set to come on at 140 psi and shut off at 150 psi.