Graco 332097A Bedienungsanleitung PDF herunterladen (Seite 10)

TROUBLESHOOTING

If operating difficulties occur, review the symptoms below. With each problem there are one or more

possible causes which should be investigated to resolve the situation.

Nothing HAPPENS - If absolutely nothing happens when trying to cycle the Dispense Valve, check the

electric/pneumatic power. Check the foot-switch or cycle start switch to be sure it is plugged in,

VALVE CYCLES, NOTHING DISPENSED - First, try to purge the unit; this should fix most situations.

If it doesn't, check to see that there is enough pressure to the reservoir. Perhaps the

Reservoir/Tube/Needle path is clogged; examine and clear or replace as necessary. Consider whether

the material could have "set up" in the system (Refer to Wet Checkout and Cleanup sections).

IRREGULAR VOLUME DISPENSED - Irregular dispensing can usually be attributed to faulty material.

The material must be a smooth (homogeneous) mixture, without any air trapped in it. A second cause

could possibly be that the material is not filling the Dispense Tube fully and in time.

Check the reservoir pressure as it may be too low for the type of material being dispensed and/or the

cycle time may be too fast. Cycle time is a function of the air supply controller. To adjust, follow the

directions found in the controller operating manual.

REDUCED VOLUMES DISPENSED - Check to see if Dispense Tube requires replacement or whether

needle is partially clogged (Refer to Cleanup Section). Wrong pinch tube installed (smaller I.D. will

give smaller dispense).

TUBING LIFE VERY SHORT - Incorrect pinch tube (tube wall thickness is too large).

VALVE DRIPS - Pinch tube needs replacing; wrong pinch tube used (wall thickness too small).

SLOW OR SLUGGISH CYCLE TIME - This may be due to inadequate lubrication of the piston walls.

Remove the upper and Lower Pinch-Off Pistons and the Dispense Piston. Apply a very thin film of

compatible light lubricating oil to the outside diameter surfaces of the pistons and the U-seals and

reassemble. This will restore smooth and consistent operation.

1 2 ... 5 6 7 8 9 10 11 12

Keine Kommentare

Graco 332097A Bedienungsanleitung Seite 10