ASM 246796, Руководство пользователя

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10
309902
Troubleshooting
LOW OR FLUCTUATING OUTPUT
TYPE OF PROBLEM WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK refer to this column
Low Output 1. For worn spray tip. 1. Follow Pressure Relief Procedure, then
replace tip. See your separate gun or tip
manual.
2. Verify pump does not continue to stroke when
gun trigger is released.
2. Service pump, page 25.
3. Filter clogged. 3. Relieve pressure. Check and clean filter.
4. Prime valve leaking. 4. Relieve pressure. Repair prime valve.
5. Suction hose connections. 5. Tighten any loose connections.
6. Electrical supply with volt meter.
Meter must read 85--130 VAC for 100--120
VAC models. Low voltages reduce sprayer
performance.
6. Reset building circuit breaker; replace
building fuse. Repair electrical outlet or try
another outlet.
7. Extension cord size and length; must be at
least 12 gauge wire and no longer than 300 ft.
Longer cord lengths reduce sprayer perfor-
mance.
7. Replace with a correct, grounded exten-
sion cord.
8. Leads from motor to circuit board (100) for
damaged or loose wires or connectors. In-
spect wiring insulation and terminals for signs
of overheating.
8. Be sure male terminal blades are cen-
tered and firmly connected to female ter-
minals. Replace any loose terminal or
damaged wiring. Securely reconnect ter-
minals.
9. For loose motor brush leads and terminals,
page 14.
9. Tighten terminal screws. Replace
brushes if leads are damaged, page 14.
10.For worn motor brushes which must be 1/2 in.
minimum, page 14.
10. Replace brushes, page 14.
11. For broken and misaligned motor brush
springs. Rolled portion of spring must rest
squarely on top of brush.
11. Replace spring if broken. Realign spring
with brush, page 14.
12.Motor brushes for binding in brush holders,
page 14.
12.Clean brush holders, remove carbon dust
with small cleaning brush. Align brush
lead with slot in brush holder to assure
free vertical brush movement.
13.Low stall pressure. 13. Do either or both:
a
. Turn pressure control knob fully
clockwise. Make sure pressure
control knob is properly installed to
allow full clockwise position.
b
. Try a new transducer.
14.Motor armature for shorts by using an arma-
ture tester (growler) or perform spin test, page
13.
14.Replace motor, page 24.