Fire Pump Pressure Switch Setting

The pressure operated switch in the controller should be sensitive enough to permit this range to be as short as 10 to 13 psi.

Fire pump pressure switch setting.

2 the jockey pump start point should be at least 10 psi 0 68 bar less than the jockey pump stop point. Fire fighter vinod choudhary 33 372 views 29 33. 60 psi from city maximum static iii. A sudden massive amount of water.

Let s say the pressure is 150 psi. 1000 gpm 100 psi pump with churn pressure of 115 psi ii. 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. Jockey pump start 165 psi 10 psi 155 psi v.

Jockey pump would be set to come on at 140 psi and shut off at 150 psi. Depending on the type of pressure switch the fire pump would come on at 130 135 psi. 1 the jockey pump stop point should equal the pump churn pressure plus the minimum static supply pressure. 50 psi from city minimum static.

1 the jockey pump stop point should equal the pump churn pressure plus the minimum static supply pressure. Nfpa 20 covers the settings. The fire pump system when started by pressure drop should be arranged as follows. 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 house completely information all pump line in hindi main pump jocky pump diesel engine duration. Examples of fire pump settings. Start the fire pump and note the maximum pressure on the discharge gauge.