Graco 257823 User manual

313901A
Repair Kit
IEC Socket
Repair Kit 257823
- For servicing FinishPro 290 Sprayers -
Pressure Relief Procedure
Important Safety Instructions
For detailed instructions and warnings,
see sprayer manual.
To reduce the risk of injury from injection, always follow
this procedure when instructed to relieve pressure,
stop spraying, service equipment, or install or clean
spray tip.
1. Set power/function selection switch to OFF and
unplug sprayer.
2. Turn pressure knob to lowest setting.
3. Hold gun to side of grounded metal pail. Trigger the
gun to relieve pressure.
4. Turn prime valve to PRIME.
If you suspect spray tip or hose is completely clogged, or
that pressure has not been fully relieved after following
these steps, VERY SLOWLY loosen tip guard retaining
nut or hose end coupling to relieve pressure gradually,
then loosen completely. Clear tip or hose obstruction.
ti9346a
ti14350a

2313901A
Disassembly
1. Relieve Pressure (see cover) and unplug sprayer.
2. Loosen IEC cord clamp screw and remove IEC plug
from compressor.
3. Remove air hose from compressor and remove out-
let fitting from compressor.
4. Remove four screws. Tip compressor assembly
down and forward to remove from sprayer. Place
compressor on workbench.
5. Remove two screws and IEC cord clamp. Remove
two screws and compressor shroud.
6. Disconnect leads from IEC socket.
7. Remove screw and ground wire from compressor
housing.
8. Remove IEC socket by sliding it out of plastic holder
attached to motor (slide back toward fan).
ti13409a
ti13411a
ti13416a
ti13414a ti13664a
ti14347a
ti14346a
ti14348a

313901A 3
Reassembly
• For more information, see Wiring Diagrams (pages
4 and 5) for your sprayer model.
1. Slide new IEC socket into plastic holder.
2. Attach ground wire to compressor housing with
screw.
3. Attach ground wire and power leads to IEC socket.
4. Install compressor shroud with two screws. Install
IEC cord clamp with two screws.
5. Install compressor outlet fitting.
6. Tip compressor assembly up and back into frame.
Install four screws.
7. Install IEC connector and tighten cord clamp. Install
air hose to outlet fitting. Make sure cord is pushed in
as far as it can go and the screw is tightened
securely to ensure a good connection.
ti14349a
ti14346a
ti14347a
ti13414a ti13664a
ti13411a
ti13442a
ti13420a

4313901A
Wiring Diagram - 120 Vac
A
BB
B
C
CC C
D
E
E
F
ti13424a
A Red Wire
BBlackWire
C White Wire
DBlueWire
E Striped Wire
F Green/Yellow Wire
GFuse

313901A 5
Wiring Diagram - 240 Vac
A
B
D
B
D
A
E
A
A
E
D
A
A Brown Wire
BBlackWire
D Blue Wire
E Green/Yellow Wire
F Compressor Fuse
GFluidPumpFuse