Alarm Troubleshooting
Table 17. Alarm Troubleshooting
E-4: RATIO LOW ALARM
Sequential Dosing System
The mix ratio is lower than the set tolerance on the previous dose cycle.
Dynamic Dosing System
The mix ratio is lower than the set tolerance for an A to B component volume comparison.
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 | Restrict gun needle travel to slow down the initial fluid |
rate was probably too high. | delivery rate until fluid hoses are loaded with material. |
|
|
If the alarm occurred after you were spraying for some | Adjust component A and B fluid supply regulator pres- |
time, the pressures from the fluid supplies could be | sures until they are about equal. If the pressures are |
unbalanced. | already about equal, verify that component A and B dose |
| valves are operating properly. |
|
|
Slow actuation of the component A or B valves. This can | Manually operate the Dispense A and B solenoid valves |
be caused by: | as instructed in the ProMix 2KS |
| check operation. |
|
|
• Air pressure to the valve actuators is too low. | • Increase air pressure. Air pressure must be |
| psi |
| mended. |
|
|
• Something is restricting the solenoid or tubing and | • There may be dirt or moisture in the air supply. Filter |
interrupting valve actuation air. | appropriately. |
|
|
• A dose valve is turned in too far. | • Refer to Table 13: Mix Manifold Valve Settings, |
| page 89, for adjustment guidelines. |
|
|
• Fluid pressure is high and air pressure is low. | • Adjust air and fluid pressure. See recommended air |
| pressure above. |
|
|
118 | 312779E |
