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| Illustration 1 | g01470853 |
Right front fender (1) Recirculation valve (2) Return line (3) Pin (4) Inlet valve (5) Strainer assembly (6) Drain valve | |
The emulsion system components are located on the right side of the RM-300. When the emulsion spray pump is operating, emulsion is drawn from the supply truck through inlet valve (4) and strainer assembly (5). The emulsion spray pump sends filtered emulsion through the flow transmitter and to the spray nozzles. The strainer assembly should be serviced daily. A plugged strainer can cause erratic flow and/or pump cavitation.
If the spray nozzles are closed, the return valve sends emulsion to recirculation valve (1). The recirculation valve can be set to direct the unused emulsion to the inlet side of the pump in order to recirculate. The recirculation valve can be set to direct the unused emulsion to the supply truck through return line (2) .
Recirculation valve (1) is marked with an arrow in order to indicate the direction of flow. When the arrow is perpendicular to return line (2) flow is directed back into trainer assembly (5). In this situation, flow is directed back into the inlet side of the pump. When the arrow is parallel to the return line, flow is directed back to the supply truck.
When recirculation valve (1) is set to the RETURN position, a return hose must be connected from return line (2) to the supply truck.
Note: The RETURN function is usually used with emulsions that may solidify if the emulsion is allowed to cool.
Pin (3) at the front of the machine is used to connect the push bar between the machine and the supply truck when the emulsion system is being used.
Drain valve (6) can be used to drain emulsion from strainer assembly (5).
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| Illustration 2 | g01470856 |
Top of mixing chamber (7) Spray bar (8) Spray bar cylinder (9) Mechanical connection (10) Nozzles | |
Emulsion spray bar (7) is located on the top of the mixing chamber.
Spray bar cylinder (8) controls nozzles (10) through mechanical connection (9). When the spray bar cylinder is retracted, the nozzles are open. When the spray bar cylinder is extended, the nozzles are closed.
Sixteen nozzles (10) are evenly spaced along the spray bar. Individual nozzles can be manually closed in order to change the width of the spray bar.
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| Illustration 3 | g01470862 |
Nozzle use chart (A) 114-1189 Nozzle Gp (B) 115-7575 Nozzle Gp (C) 115-7573 Nozzle Gp | |
Three sets of nozzles are available for the emulsion system. Each set provides a different flow rate. The set which is used should match the required flow rate for the job site. The chart above shows the different flow rates for the three nozzles by a part number.
Note: Use of a large nozzle with a low flow rate will cause erratic readings, and use of a small nozzle with high flow rates will reduce the capacity of the system at higher pumping rates. Determine the nozzle size for the specific job conditions and the rate of application.
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| Illustration 4 | g01470867 |
Right side of machine (8) Spray bar cylinder (11) Mechanical connection (12) Return valve | |
Return valve (12) is located on the right side of the machine. Spray bar cylinder (8) controls the return valve through mechanical connection (11) .
When spray bar cylinder (8) is retracted, return valve (12) is closed. When the spray bar cylinder is extended, the return valve is open. When the return valve is open, emulsion is sent to recirculation valve (1).