Motor Control Board; Power Supply Cord; On/Off Switch - Graco ULTRA 600 231–307 Series A Instructions-Parts List Manual

WARNING
To reduce the risk of serious injury, follow the Pres-
sure Relief Procedure Warning on page 21 be-
fore doing this procedure. Unplug the sprayer!
1. Remove the screws (56,75) and lower the control
card (47). See Fig. 26.
2. Disconnect the motor wires (C) and the two
connectors (D) from the motor control board (47).
Observe where connections are made. See Fig.
12.
3. Remove the screw (9) from the ground wire (G)
and remove the board.
WARNING
To reduce the risk of serious injury, follow the Pres-
sure Relief Procedure Warning on page 21 be-
fore doing this procedure. Unplug the sprayer!
1. Remove the screws (56, 75) and lower the control
card (47). See Fig. 26.
2. Disconnect the power supply cord leads (P), in-
cluding the green wire to the grounding screw (9).
See Fig. 12.
WARNING
To reduce the risk of serious injury, follow the Pres-
sure Relief Procedure Warning on page 21 be-
fore doing this procedure. Unplug the sprayer!
1. Remove the screws (56,75) and lower the control
card (47). See Fig. 28.
2. Remove the rubber boot (55). See page 36.
3. Disconnect the black wires from the ON/OFF
switch (52) and remove the switch. See Fig. 12.

Motor Control Board

Power Supply Cord

On/Off Switch

4. Install the new motor control board. Reconnect all
wires and secure it to the junction box (59).
CAUTION
Be sure the flat blade of the insulated male connec-
tor is centered in the wrap–around blade of the fe-
male connector when the connections are made.
Route all wires carefully to avoid interference with
the motor control board or junction box.
These precautions are essential to reduce the risk
of a malfunction.
3. Loosen the strain relief bushing (51). Remove the
power supply cord (50).
4. Install the new cord (50) in the reverse order of
disassembly.
5. Install the control card. Be sure no leads are
pinched between the card and other components.
4. Install the switch so the internal tab of the anti–ro-
tation ring (54) engages with the vertical groove in
the threads of the switch, and the external tab en-
gages with the slot of the junction box. See page
36.
5. Powder the inside of the rubber boot (55) with tal-
cum, then shake the excess out of the boot. Install
the nut and rubber boot and tighten.
6. Reconnect the ON/OFF switch black wires.
7. Install the control card. Be sure no leads are
pinched between the motor control board or other
components.