 | |
| Illustration 1 | g00575664 |
Schematic For The Water Spray System (1) Spray bar (front). (2) Filter (front). (3) Water tank (front). (4) Check valve (front). (5) Pump and motor group (front). (6) Water tank (rear). (7) Filter (rear). (8) Check valve (rear). (9) Pump and motor group (rear). (10) Tie line. (11) Spray bar (rear). (12) Water spray nozzles. | |
The drum water system consists of two identical water systems. One system is at each end of the machine. The water spray systems are connected by a tie line (12). The main components of the water spray system are the pumps (5) and (9), the filters (2) and (7), the water tanks (3) and (8), and the spray bars (1) and (10) .
The water spray system is used to keep the front and the rear drums wet. The drum surfaces should be kept continuously wet. This helps to prevent hot asphalt from sticking to the drum surfaces during compaction.
Pump (5) and pump (9) operate independently of each other. Only one pump (5) or (9) runs at a time. The pump which is operating will supply water to both the spray bars (1) and (10). Water is filtered through either filter (2) or (7). The water will then flow to the spray bar (1) and (11) .
Water pressure on the drums is not adjustable. To change the pressure, the spray nozzles (12) on the spray bar (1) and (11) can be changed.
Pumps (5) and (9) are controlled by the operator with a switch on the operator console. A second switch selects the different positions for the water spray. This switch has three positions that can be used. The positions are OFF, CONTINUOUS SPRAY, or INTERMITTENT SPRAY. The INTERMITTENT SPRAY switch position uses a cycle which is timed. This aids in the reduction of water. The INTERMITTENT SPRAY cycle is in the ON position for 15 seconds, and the OFF position for 15 seconds.