Graco 231-032 A Series Instructions And Parts List page 26

PRESSURE CONTROL REPLACEMENT
(Refer
to Ag 201
Tools Needed:
Phillips screwdriver
112" open end wrench
314' open end wrench
Adjustable wrench
Small screwdriver
ARNING
Relief Procedure Warning on page 13 to reduce
the risk of a fluid injection injury, injury from mov-
ing parts, or electric shock. Unplug the sprayer1
1. Disconnect the main fluid hose
(901
and the secon-
2.
Disconnect the fluid hose (47)
from
between the
I
dary fluid hose,
if used,
from the sprayer.
displacement pump outlet nipple
(46)
and pressure 47
control inlet nipple (344).
3.
Loosen the filter bracket nut ( 2 8 ) and washer (13)
using a 314" open end wrench.
4. Hold the pressure control adapter (341) firmly with
a 314" open end wrench.
Use
an adjustable wrench
to loosen the swivel union
(81,
then remove the fluid
filter (48).
5. Remove the pressure control cover and screws (38,
151, and disconnect the four motor leads at the ap-
propriate terminals.
8. Refer to Circuit Board Replacement on page
22,
remove the circuit board end retain.
7. Remove the conduit
(221.
8. Use
a 112" open end wrench to loosen and remove
the pressure control mounting screws
(441
located
below the pressure control box. Remove the box.
9. Install the new pressure control assembly in the
reverse order of disassembly. Be sure to re.install
the conduit connector
( 5 4 1
to prevent motor con-
the conduit seal (&not shown1 around the wires in
ne
20
-
tamination from entering the control box.
10. Perform the pressure control calibration procedure
on page
27,
before regular operation of the sprayer.
m
307-7513