ProSpray 24
g
Servicing
Repairs at the unit
10. Servicing
10.1 General servicing
Servicing of the unit should be carried out once annually
by the WAGNER service.
1. Check high-pressure hoses, device connecting
line and plug for damage.
2. Check the inlet valve, outlet valve and filter for wear.
10.2 High-pressure hose
Inspect the high-pressure hose visually for any notches
or bulges, in particular at the transition in the fittings. It
must be possible to turn the union nuts freely.
11. Repairs at the unit
11.1 Relief valve
1. Use a drift punch of 2 mm to remove the grooved pin
(Fig. 14, Item 1) from the relief valve handle (2).
2. Remove the relief valve handle (2) and cam base (3).
3. Using a wrench, remove the valve housing (4) from
the pump manifold (6).
4. Ensure that the seal (5) is seated correctly, then screw
the new valve housing (4) completely into the pump
manifold (6). Tighten securely with a wrench.
5. Align the cam base (3) with the hole in the pump
manifold (6). Lubricate the cam base with grease and
slide on the cam base.
6. Bring the hole in the valve shaft (7) and in the relief
valve handle (2) into alignment.
7. Insert the grooved pin (1) to secure the relief valve
handle in position.
1
7
5
6
4
2
3
Switch the unit OFF.
Before all repair work: Unplug the
power plug from the outlet.
Danger
11.2 Inlet and outlet valve
1. Remove the four screws in the front cover and then
remove the front cover.
2. Switch the unit ON and then OFF so that the con-
necting rod is positioned in the lower stroke position.
3.
4. Unit on high-rider cart
Screw off the suction tube.
Unit on stand and low boy cart
Remove the retaining clip from the connecting bend
at the suction hose and pull off the suction hose.
5. Screw off the return hose.
6. Swivel the unit 90° to the rear in order to work more
easily on the material feed pump.
7. Unscrew the inlet valve housing (Fig. 15, Item 1) from
the pump manifold.
8. Remove the lower seal (2), lower ball guide (3), inlet
valve ball (4), inlet valve seat (5) and O-ring (6).
9. Clean all the parts with the corresponding cleaning
agent.
Check the inlet valve housing (1), inlet valve seat (5)
and inlet valve ball (4) for wear and replace the parts
if necessary. If the worn inlet valve seat (5) is unused
on one side, install it the other way round.
2
3
4
5
6
1
Unplug the power plug from the outlet.
Danger
Danger of crushing - do not reach with
the fingers or tool between the moving
parts.
Danger
