User manual GRACO AX AIRLESS SPRAYER REPAIR

[. . . ] Repair AX Airless Sprayer 313249B - For portable spray applications of architectural paints and coatings (Specifications, page 3) Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. ti12662a AX Sprayer Model 257013 Related Manuals Operation: SG20 Gun (English): SG20 Gun (Spanish): SG20 Gun (French): 313248 313250 313251 313252 Graco Inc. Box 1441 Minneapolis, MN 55440-1441 Copyright 2002, Graco Inc. EN ISO 9001 Contents Manual Conventions . [. . . ] Check pressure control harness connection on front side of drive housing. Check length of BOTH brushes (brushes do not wear evenly on both sides of the motor). If brushes are worn replace motor using Motor Kit, page 18. Check for burn spots, gouges and extreme roughness. Have motor shop resurface commutator if possible, or replace motor using Motor Kit, page 18. Check for shorts using armature tester (growler) or perform spin test, Motor Diagnostic, page 19. If shorts are evident, replace motor using Motor Kit, page 18. Replace control board if damaged using Control Board Kit, page 18. Control board leads are improperly fastened or improperly mated Motor brushes are worn. Motor armature commutator damaged Motor armature shorting Control board damaged. CAUTION: Do not perform control board diagnostics until you have determined the armature is good. A bad armature can burn out a good control board. Sprayer Wiring Problems NOTE: Remove enclosure mounting screws and pull enclosure away from drive housing. Take care not to pull on leads from electrical cord and power switch. Disconnect black electrical cord wire at power switch 3. Unplug in-line connection white cord wire. Test voltage between black and white wires. Disconnect black control board wire at power switch. Unplug in-line connection white cord wire. Test voltage between open terminal of power switch and white electrical cord wire. Replace power switch if no voltage. Sprayer power switch damaged 12 313249B Advanced Troubleshooting Specific Problem Sprayer Wiring Problems (cont. ) Cause Motor thermal overload cutoff switch damaged. Thermal Overload, page 7. Solution 1. Remove motor harness from control card 3. Check for continuity between yellow leads or motor harness. [. . . ] Damage to plastic parts may result if impact occurs in low temperature conditions. Changes in paint viscosity at very low or very high temperatures can affect sprayer performance. 313249B 23 Graco Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco's written recommendations. [. . . ]