CHAPTER 6
44 SCS 440 Serial Interface Installation & Service Manual
ALTERNATE BYPASS LINE SYSTEM SETUP
NOTE: This procedure applies only to applications of less than 3 GPM [11 lit/min]. For flow of 3 GPM [11 lit/
min] or greater, refer to the Initial System Setup section on page 43 for the main hose line setup
procedure.
1. Fill the tank with water only.
2. Turn the Master ON/OFF switch ON.
3. Turn the boom ON/OFF switches OFF.
4. Switch the AUTO/MAN/OFF switch to MAN.
5. Turn the Power ON/OFF switch to ON.
6. Verify that the BOOM CAL, SPEED CAL, METER CAL, VALVE CAL, AND RATE CAL values have been entered
correctly into the console.
7. Press the SELF TEST button.
8. Enter the machine’s normal operating speed.
9. With the pump not running, fully open the main line hand valve and the bypass #1 hand valve.
10. Completely close the agitator line hand valve.
11. If a centrifugal pump is used, proceed to the next step. If a positive displacement pump is used, fully open the
pressure relief valve (PRV).
12. Run the pump at normal operating RPMs.
13. If a centrifugal pump is used, proceed to the next step. If a positive displacement pump is used, complete the
following steps:
a. Turn the Master ON/OFF switch to OFF.
b. Close the bypass #1 hand valve.
c. Set the PRV to 65 psi [450 kPa].
d. Open the bypass #1 hand valve.
e. Turn the Master ON/OFF switch to ON.
14. Verify that each boom valve is operational and not nozzles are plugged in by operating the boom ON/OFF
switches.
15. Turn all boom ON/OFF switches to ON.
16. Hold the FLOW CONTROL switch in the INC position for approximately 12 seconds. This ensures that the
motorized control valve is fully closed.
17. Adjust the agitator line hand valve until the desired agitation is reached.
18. If necessary, close the main line hand valve to set the desired maximum operating pressure.
NOTE: The maximum pressure should be approximately 10 psi [70 kPa] above the normal spraying pressure.
For example, if the normal spraying pressure is 30 psi [210 kPa], set the maximum pressure to 40 psi
[280 kPa].
19. Hold the MAN ADJ switch in the DEC position for approximately 12 seconds. This ensures the motorized control
valve is fully open.
20.Close the bypass #1 hand valve to set the desired minimum operating pressure.
NOTE: The minimum pressure should be approximately half the normal spraying pressure. If the normal
spraying pressure is 30 psi [210 kPa], set the minimum pressure to approximately 15 psi [105 kPa).