User's Manual

Alarm Troubleshooting
3A1080C 93
E-4: RATIO_LOW_ALARM
The mix ratio is lower than the set tolerance on the previous dose cycle.
Cause Solution
There is too much restriction in the system. • Check that the system is fully loaded with material.
• Check that the supply pump’s cycle rate is set prop-
erly.
• Check that the spray tip/nozzle is properly sized for
the flow and application, and that it is not clogged.
• Check that the fluid regulator is set properly.
If the alarm occurs during start up, after purging, the flow
rate was probably too high.
Restrict gun needle travel to slow down the initial fluid
delivery rate until fluid hoses are loaded with material.
If the alarm occurred after you were spraying for some
time, the pressure from the fluid supply could be too low.
Adjust fluid supply regulator pressure. Verify that compo-
nent A dose valve is operating properly.
Slow actuation of the component A valve. This can be
caused by:
Manually operate the Dispense A solenoid valves as
instructed in the ProControl 1KS Repair-Parts manual to
check operation.
• Air pressure to the valve actuator is too low. • Increase air pressure. Air pressure must be 75-120
psi (0.52-0.84 MPa, 5.2-8.4 bar); 120 psi is recom-
mended.
• Something is restricting the solenoid or tubing and
interrupting valve actuation air.
• There may be dirt or moisture in the air supply. Filter
appropriately.
• A dose valve is turned in too far. • Refer to Table 10: Mix Manifold Valve Settings,
page 67, for adjustment guidelines.
• Fluid pressure is high and air pressure is low. • Adjust air and fluid pressure. See recommended air
pressure above.
Table 14. Alarm Troubleshooting