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Фрагмент инструкции
Flammable materials spilled on the hot, bare motor could cause a fire or explosion. . . Motor Test WARNING INJECTION HAZARD To reduce the risk of serious injury, when instructed to relieve pressure, follow the Pressure Relief Procedure on page 8. For checking armature, motor winding and brush electrical continuity. Setup 1. Unplug sprayer. 2. Remove drive housing. See page 26. This is to ensure that any resistance you notice in armature test is due to motor and not to worn gears in drive housing. Armature Short Circuit Test 1. Remove fan cover (B). See Fig.12. 2. Spin motor fan by hand. If there are no shorts, the motor will coast two or three revolutions before coming to a complete stop. If the motor does not spin freely, the armature is shorted and the motor must be replaced. See page 23. Armature, Brushes, and Motor Wiring Open Circuit Test (Continuity) 1. Connect red and black motor leads (C) together with a test lead. Turn motor fan by hand at about two revolutions per second. See Fig. 13. 80 3. Remove motor brush inspection covers (A). See Fig. 12. 77 67 30 78 C 22a 96 D E black green white black red yellow 107 108 4. Remove screws (25, 26). Lower control board (22a). Disconnect two leads (C) from motor to board. See Fig.13. A Fig. 13 B Fig. 12 02991 2. When turning the fan on a DC motor, normally you sense an even, pulsing resistance. If there is irregular turning resistance, or no turning resistance, check and repair the following as needed: broken brush springs, brush leads, motor leads; loose brush terminal screws or motor lead terminals; worn brushes. See page 21. 3. If there is still uneven or no turning resistance, replace motor. See page 23. . . Motor Brushes NOTE: Replace brushes when worn to about 12.5 mm (0.5 in.). Always check both brushes. Brush Repair Kit 236967 is available for motor brush repair. NOTE: Replacement brushes may last only half as long as the original ones. To maximize brush life, break in new brushes by operating the sprayer with no load as instructed in this procedure. NOTE: To minimize down time, and for best sprayer performance, check motor brushes and clean transducer (see page 28) whenever pump is repacked. WARNING INJECTION HAZARD To reduce the risk of serious injury, when instructed to relieve pressure, follow the Pressure Relief Procedure on page 8. 1. Unplug sprayer. 2. Remove both inspection covers (A) and their gaskets. See Fig.14. Fig. 14 A 7735A 3. Push in spring clip (F) and release hooks (G) from brush holder (B). Pull out spring clip. See Fig. 15. 4. Inspect commutator for excessive pitting, burning or gouging. A black color on commutator is normal. Have commutator resurfaced by a qualified motor repair shop if brushes seem to wear too fast or arc excessively. See Step 9.d., also. 5. Repeat for other side. 6. Place a new brush (C) in holder (B) so ramp (H) faces spring. See Fig. 15. 7. Holding spring clip (F) at a slight angle, slide spring clip into brush holder and hook it over end of holder. See Fig. 16. Pull on spring clip to be sure it stays in place. Connect brush lead to blade connector (E). 8. Repeat for other side. 9. Test brushes. a. Remove pump connecting rod pin (14). WARNING ELECTRIC SHOCK HAZARD Do not touch the brushes, leads, springs or brush holders while the sprayer is plugged in to reduce the risk of electric shock and serious bodily injury. b. With sprayer OFF, turn pressure control knob fully counterclockwise to minimum pressure. Plug in sprayer. c. Turn sprayer ON. Slowly increase pressure until motor is at full speed. d. Inspect brush and commutator contact area for excessive arcing. Arcs should not trail or circle around commutator surface. 10. Install brush inspection covers and gaskets. 11. Break in brushes. Operate sprayer for at least one hour with no load. Install pump connecting rod pin. Fig. 15 F G E D C B H Motor lead; do not disconnect Minimum 12.5 mm (.5 in.) Fig. 16 G C E F Displacement Pump NOTE: Packing Repair Kit 235703 is available. Reference numbers of parts included in the kit are marked with an asterisk, i.e., (223*). Removing pump (See Fig.17) WARNING INJECTION HAZARD To reduce the risk of serious injury, when instructed to relieve pressure, follow Pressure Relief Procedure on page 8. 47 7736A 213 *227 *214 215 222 15 14 17 18 50 36 43 45 11 Fig. 17 Apply pipe sealant (110110) 48 Torque to 50 ft-lb (68 Nm) 232132, 232133 shown 12 1. Relieve pressure. 2. Flush pump, if possible. Relieve pressure. Stop pump with piston rod (222) in its lowest position, if possible. To lower piston rod manually, rotate motor fan blades. 3. Remove filter (48). 4. Models 232132 and 232133. While pulling upward on suction hose (47), unscrew hose from inlet tube (43). Unscrew drain hose (50) from displacement pump nipple (36). 5. Models 232130 and 232131. Remove suction tube (43). Unscrew drain tube (84) from displacement pump nipple (36). 6. Use a screwdriver to push retaining spring (15) up and push out pin (14). 7. Loos...