TM 5-3895-379-10
THEORY OF OPERATION - CONTINUED
0003 00
WATER SPRAY SYSTEM
1.
The water spray system is used to wet the front and rear drums to help prevent hot asphalt from sticking to the drum sur-
faces during compaction. The water spray system consists of two identical, but separate systems, one at each end of the
roller.
2.
The water spray system uses pumps controlled by a switch on the operator's console to provide water flow. The switch
has three positions: off, continuous spray, and intermittent spray. The continuous spray setting turns on the water spray
system and water sprays on the drums continuously. The intermittent spray switch position uses 15-second cycles of
water spraying on the drums and no water spraying on the drums to reduce water consumption.
3.
There are three drain cocks that allow the water to be drained from the system. The pumps pull water from two tanks
and water spray screens which filter foreign materials from the water. The water then enters the pump and is pumped to
the spray bar. There are seven spray nozzles in each spray bar which distribute the water evenly over the surface of the
drums. A check valve is located at the end of the spray bar to control the pressure of the water in the spray bars. Excess
water is sent past the check valve and back into the water tank. On the CB534B only, the front and rear water spray sys-
tems are connected by a tie-line valve, which allows one water spray system to supply pressurized water to the nozzles
of the other water spray system, in the event of failure of one of the pumps.
NOZZLES
WATER TANK
SPRAY BAR
STRAINER
TIE-LINE
PUMP
VALVE
401-010
(CB534B)
END OF WORK PACKAGE
0003 00-5/(0003 00-6 Blank)