Motor capacitor replacement – Graco ULTRA AIRLESS 230-963 User Manual
Page 29
MOTOR CAPACITOR REPLACEMENT (See Figs
WARNING
the
of a fluid injection injury, splashing in the
Relief Procedure Warning on page 17 to reduce
eyes or on the skin, injury from moving parts or
1. Remove the control box cover
Disconnect the
motor leads.
2.
Remove the fan cover
and screws
from the
rear of the motor.
See Fig
3.
Use a screwdriver to
gently
the fan tab out of the
motor shaft groove and remove the fan
4. Remove the inspection cover
screws
and
gasket
from each side
of
the motor
See Fig
29.
5. Push down slightly on the spring clip and pull the
clip out of the brush holder. See Fig
6. Gently push the brushes out of the brush holder
and inspect. Replace if necessary.
See page 27.
7. Make a matchmark between the front end
bell
and the motor housing and the rear end bell
and the motor housing to use as alignment marks
of the motor housing. Refer to Fig
during reassembly.
Also make
a
mark on the
front
8.
Use
a
11
mm
socket wrench to remove the
nuts from the rear end bell
9.
Gently
tap
alternate ears of the rear end bell with a
plastic mallet to loosen
it,
then
pull
it
straight
off.
Do
not
pull the motor armature out.
Retain any
washers that fall
when the bell is
removed.
10. To replace the capacitor, remove the brush lead ter-
minal screws
and the screw
going into the
insulation plate of the rear end bell. Install a new
capacitor
making sure the ceramic case
of the
capacitor
is
not cracked. Maintain
a
3
mm
clearance'between the capacitor and any grounded
same time.
metal parts. Always replace both capacitors at the
11. Position the rear end
bell
over the tie bolts and
push
it
onto the motor housing. Align the
nuts.
marks carefully and install the lockwashers and
12. Position the fan
over the motor shaft and push
it
motor shaft groove.
into place, making sure the fan
tabs
engage
in
the
13. Install the fan cover and screws.
14. Reconnect the motor leads in the pressure control
box and reinstall the conduit
conduit seal
into conduit elbow, around the motor lead.
Reinstall the pressure control cover
and screws
Fig
1
I
HOLDER
BRUSH
SHOWN WITH MOTOR LEAD
DETAIL
OF MOTOR
BRUSH
FACING BACK
OF MOTOR
Fig
28
307-671