To Next PageTo Next PageWhat to do if fluid spray starts before spray icon on Graco LineLazer IV 3900 display?
If the fluid spray starts before the spray icon is shown on the display of your Graco Construction Equipment, it's likely that the interrupter is improperly positioned. Turn the screw clockwise until the spray icon is synchronized with the fluid spray.
How to fix spray icon not showing on Graco LineLazer IV 3900 display when fluid is sprayed?
If the spray icon does not appear on the display when fluid is sprayed from your Graco Construction Equipment, check the following: * Loose connector: Check the connector and reconnect it. * Interrupter is improperly positioned: Turn the screw counterclockwise until the spray icon synchronizes with fluid spray. * Reed switch assembly is damaged: Replace the reed switch assembly. * Magnet on assembly is missing: Replace the reed switch assembly. * Cut or sliced wire: Replace the distance sensor harness. * Control board is damaged: Replace the control board. * Display is damaged: Replace the display.
What to do if spray icon is always shown on Graco LineLazer IV 3900 Construction Equipment display?
If the spray icon is always shown on the display of your Graco Construction Equipment, check these items: * The interrupter is improperly positioned: Turn the screw clockwise until the spray icon is synchronized with the fluid spray. * The reed switch assembly is damaged: Replace the reed switch assembly.
What to do if my Graco Construction Equipment pump output is low?
If your Graco Construction Equipment pump output is low, check if the strainer is clogged (clean it). Other potential causes include: the piston ball not seating properly (service it), piston packings worn or damaged (replace them), O-ring in pump worn or damaged (replace o-ring), intake valve ball not seating properly or packed with material (clean intake valve), engine speed too low (increase throttle setting), clutch worn or damaged (replace clutch), pressure setting too low (increase pressure), fluid filter, tip filter or tip clogged or dirty (clean filter), or large pressure drop in hose with heavy materials (use larger diameter hose and/or reduce overall length of hose. Use 3/8 in. hose for optimum performance).
What to do if my Graco Construction Equipment fluid is spitting from the gun?
If fluid is spitting from the gun of your Graco Construction Equipment, it may be due to air in the pump or hose (check and tighten all fluid connections, then reprime the pump). Another cause could be a partially clogged tip (clear the tip). Also, the fluid supply might be low or empty (refill the fluid supply and prime the pump).
General| Brand | Graco |
|---|---|
| Model | LineLazer IV 3900 |
| Category | Construction Equipment |
| Language | English |
