Graco 231-323, Инструкция-перечень запасных частей

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14 308–342
Pump Maintenance
For pump maintenance, troubleshooting and/or repair, see Manual 308–399.
Troubleshooting
WARNING
To reduce the risk of injury, follow the Pressure Relief Procedure on page 7.
System Troubleshooting
PROBLEM CAUSE SOLUTION
Spray pattern too coarse Material too thick Thin material
Not enough air volume Increase air volume at the gun
Material volume too high 1. Decrease fluid pressure; see page 10
2. Change to smaller nozzle
3. Turn fluid knob in; see page 10
Spray pattern is too fine or pro-
duces too much over spray
Too much air volume at gun Decrease air volume at gun
duces too much over spray.
Too little material volume 1. Change to a larger nozzle
2. Increase fluid pressure; see page 10
3. Turn fluid knob out; see page 10
Material too thin Thicken material
Speed of application seems slow.
Pump pressure too low Increase pressure; see page 10
Nozzle too small Use larger nozzle
Material too thick 1. Thin material, OR
2. Use 1” dia. ( 25 mm) fluid hose and adapter
Air compressor worn out Rebuild compressor; see Manual 308–185
Material surges when first trigger-
ing gun. (A slight surge is normal.) Triggering too fast. Squeeze trigger slowly to fully open position while
moving gun quickly; also see Spray Techniques on
pages 10 and 11
Insufficient air delivery from com-
pressor Loose or damaged air lines Inspect and repair lines and fittings as needed
pressor
Air compressor worn out Rebuild compressor; see Manual 308–185
Safety valves leak prematurely Replace valves