Graco EM 5000 Instructions-Parts List Manual page 18

Pressure Control Adjustment
Set Up
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
1. Relieve the pressure.
2. Set up the system as shown in Fig. 16.
Set the Dead Band (Pressure Differential)
NOTE: Do not alter this adjustment if the wheel is al-
ready set as shown in Fig. 17.
1. Turn off and unplug the sprayer. Remove the pres-
sure control cover.
2. Set the white differential wheel (A) on the micros-
witch. Turn the wheel so the letter F is concealed be-
hind the switch and the letter A is the first letter seen.
Pressure Up
1. Start the sprayer and prime it.
2. Adjust the pressure to 18.0 MPa, 180 bar.
3. Turn off and unplug the sprayer. If the pressure
drops, replace the pump packings before proceed-
ing. See page 32.
Adjust the Pressure
1. Remove the plug (326) in the bottom of the pressure
control.
2. Turn and hold the pressure control knob (B) at the
maximum pressure setting.
3. Engage the nut (C): insert the nut driver through the
pressure control hole, or use the ignition wrench from
the front of the pressure control.
a. Loosen the nut just until you hear a click. STOP.
b. Slowly tighten the nut just until another click is
heard. STOP.
4. Replace the plug (D) and pressure control cover.
Fig. 16
Fig. 17
A
Fig. 18
102–814
156–823
104–984
162–453
223–541
0474
A
0475
B
D
C
CCW