DUCOT – Heavy Attack 2020
Rural Fire Brigades Association Queensland
Revision 1.0, 11/2020 Page 61 of 132
13.3.1 Water Source
The Pump Inlet pneumatic switch is on the pump control panel beside the Ladder Rack pneumatic
switch. The Pump Inlet Switch selects between the onboard water tank (Tank to Pump) or external
supply (Inlet Suction).
Figure 73: Pump Inlet Pneumatic Switch
13.3.2 Onboard Water Tank
To use the onboard water supply:
1.
Set the Inlet Suction pneumatic switch to “TANK TO PUMP”.
2.
Prime the pump (refer section 13.2.2).
3.
Start the pump engine (refer section 13.2.6).
4.
The pump will begin drawing water from the onboard tank.
13.3.3 Drafting Water
The pump set, in conjunction with the onboard suction hoses, can draft water from an external
source, such as a pool, dam or river. The pump can use the water to supply the delivery outlets or
fill the onboard water tank. Follow this procedure to draft water from an external source.
1.
Position the appliance within range of the water source allowing for the suction hoses on-
board.
2.
Remove the suction hose(s) from the Suction Hose Locker.
3.
Remove the Cap from the 100mm Storz Inlet port located at the rear of the appliance.
4.
Connect suction hoses to the appliance inlet.
5.
Connect a suction hose strainer and float to the suction hose and position in the water
source.
6.
Set the Pump Inlet pneumatic switch to the “INLET SUCTION” position.
7.
Prime the pump (refer section 13.2.2). Note: the time taken to prime the pump is dependent
on the total length of suction hose between the appliance and the water source. The
compound gauge will drop into the negative section of the gauge.
8.
Start the pump set engine and engage the water pump (refer section 13.2.6).
9.
The pump will begin to draft water from the external source, and pressure will show on the
main pressure gauge.
