Graco ProMix 2KS Operation page 78

Alarm Troubleshooting
E-7: DOSE_TIME_A_ALARM and E-8: DOSE_TIME_B_ALARM
E-7: gun trigger input is active (AFS or Integration) and no A meter pulses are detected during the dose time
selected.
E-8: gun trigger input is active (AFS or Integration) and no B meter pulses are detected during the dose time
selected.
System is in Mix
triggered, allowing air but no fluid to pass through gun.
Fluid flow rate is too low.
Dose time setting is too short for the current flow rate.
Flow meter or cable failed or flow meter clogged.
Slow actuation of component A or B valves.
The supply pump is not turned on.
There is an air leak downstream from the air flow switch. Check the air lines for leaks and repair.
The air flow switch is stuck open.
78
Table 11. Alarm Troubleshooting
Cause
mode and gun is only partially
Solution
Fully trigger the gun.
Increase flow rate.
Increase the dose time setting.
To check meter sensor operation, remove meter cap to
expose sensor. Pass a ferrous metal tool in front of the
sensor.
If there is a meter or cable failure, you will see a large dif-
ference between the amount of fluid dispensed and the
flow meter volume displayed by the EasyKey. Clean or
repair meter as necessary. Also see meter manual
308778.
Follow Meter Calibration procedure, page 59.
See E-3: RATIO_HIGH_ALARM and E-4:
RATIO_LOW_ALARM, pages 75-76.
Turn on the supply pump.
Clean or replace air flow switch.
TI12792a
312776B