ProSpray 30 • 34
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. 12, 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).
4. Ensure that the seal (5) is seated correctly, then screw
the new valve housing (4) completely into the filter
block (6). Tighten securely with a wrench.
5. Align the cam base (3) with the hole in the filter block
(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
5
7
3
6
4
2
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 OFF so that the retaining ring
(Fig. 13, Item 1) on the connecting rod is visible be-
low the guide (2).
3.
4. Pull off clamp on suction tube and remove return
hose.
5. Unscrew the connection hose (Fig. 14, Item 1) to the
high-pressure filter.
9
8
7
6
5
4
2
1
3
Unplug the power plug from the outlet.
Danger
2
1
Danger of crushing - do not reach with
the fingers or tool between the moving
parts.
Danger
