Graco TI12552a, TI12553a important safety instructions Dose Time a Alarm and E-8 Dose Time B Alarm

Alarm Troubleshooting

Table 17. 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.

Cause	Solution
System is in Mix mode and gun is only partially triggered,	Fully trigger the gun.
allowing air but no fluid to pass through gun.
Fluid flow rate is too low.	Increase flow rate.
Dose time setting is too short for the current flow rate.	Increase the dose time setting.
Flow meter or cable failed or flow meter clogged.	To check meter sensor operation, remove meter cap to
	expose sensor. Pass a ferrous metal tool in front of the
	sensor.

TI12792a

	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 100.
Slow actuation of component A or B valves.	See E-3: RATIO HIGH ALARM and E-4: RATIO LOW
	ALARM, pages 117-118.
The supply pump is not turned on.	Turn on the supply pump.
System is in Mix mode with 0 volume entered for Min	Verify condition of fuse and replace if necessary. See
Material Fill Volume (see Option Screen 1, page 36),	Repair-Parts manual.
and Fuse F1 is blown.

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