Shibaura FT450-A, Руководство пользователя

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4. Handling of pump
(Suction and discharge of water from Fire hydrant)
1. Suction and discharging of water from Fire hydrant
(1) Capacity for supply water of the fire hydrant
It is necessary to check an enough volume for discharging water from the fire
hydrant in advance.
It would be impacted by some factors, diameter of the hydrant, the condition
of piping, an initial water pressure and so on.
The capacity of supply water would be less if the diameter was so small
although the initial water pressure is high.
In the other hand, it can be high capacity for water supply with wider
diameter in spite of low water pressure.
(2) Method of water supply
①
Avoiding from any damage of the suction hose with the higher water
pressure, choose a fire hose only with a coupler for hose connected.
② Before connection with the hose, discharge some water from the
hydrant for removing contamination.
③
Basically, the discharge valve of the hydrant should open completely,
except too much high water pressure.
2. Discharge
(1) One pump
①
Open the water discharge valve of the pump, including a nozzle of
installed.
②
Open the valve of the hydrant before an engine start, and check the
pressure scale of the pump.
③
Start the engine and discharge water.
④ Adjust the engine speed for enough pressure of water at the discharge.
⑤
In case of less water pressure, change the number of hose.
⑥
When stopping water discharging, close the valve of the hydrant at first,
and then decrease the engine speed. Finally stop the engine.