Graco Dyna-Star 25T843, Инструкция по эксплуатации, Страница: 9 / 22

Troubleshooting
Manual 3A7718A 9
Troubleshooting
1. Relieve pressure before checking or servicing the
equipment, following the pressure relief procedure
for your system.
NOTE: Check all possible problems and causes before
disassembling the air motor.
Problem Cause Solution
Air motor will not run. Damaged air valve (17). Replace or service air valve (17),
see page 18.
Damaged pilot valve (19). Replace pilot valves (19), see page
12.
Air continuously exhausting around
air motor piston rod. Damaged u-cups (3, 33) Replace piston rod u-cups (3, 33),
see page 13.
Air continuously exhausting muffler. Damaged air valve plate (105) or
cup (112) Replace or service air valve (17),
see page 10.
Damaged piston o-rings (8) Replace the seals, see page 13.
Air motor “bounces” at top of
stroke. Damaged bottom pilot valve. Replace bottom pilot valve (19),
see page 12.
Air motor “bounces” at bottom of
stroke. Damaged top pilot valve. Replace top pilot valve (19), see
page 12.
Icing inside the motor. Air motor is operating at high
pressure or high cycle rate. Reduce pressure, cycle rate, or
duty cycle of motor.
Reduce the dew point of
compressed air by using a moisture
coalescing filter.