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Basic Troubleshooting /
基本故障排除
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기본적인 문제 해결
313797C 35
Basic Troubleshooting / 基本故障排除 / 기본적인 문제 해결
Check everything in this Basic Troubleshooting Table before you bring the sprayer to a Graco authorized service center.
Problem
What To Check
(If check is OK, go to next check)
What To Do
(When check is not OK, refer to this column)
Sprayer Will Not Operate
Basic Fluid Pressure
1. Pressure control knob setting.
Motor will not run if set at min
-
imum (fully counter-clockwise).
Slowly increase pressure setting to see if motor starts.
2. Spray tip or fluid filter may be
clogged.
Relieve Pressure, page 15. Then clear clog or clean
gun filter. Refer to gun instruction manual, 313347.
Basic Mechanical
1. Pump frozen or hardened paint
Thaw sprayer if water or water-based paint has frozen
in sprayer. Place sprayer in warm area to thaw. Do not
start sprayer until thawed completely. If paint hardened
(dried) in sprayer, replace pump packings. See page
60.
2. Motor. Remove drive housing
assembly. See page 60. Try to
rotate fan by hand.
Replace motor if fan won’t turn. See page 33, Motor
Replacement.
Basic Air Pressure
1. Power/function selector.
Ensure selection is ON.
2. Air ON/OFF valve at gun may be
closed
Turn air adjustment valve counter-clockwise to open.
Slide air ON/OFF up to open.