Servicing; General Servicing; High-Pressure Hose; Repairs At The Unit - WAGNER P20 0552488 Operating Manual

Servicing

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.
P20
GB
11.

Repairs at the unit

Switch the unit OFF.
Before all repair work: unplug the power plug from
the outlet.
11.1

Relief valve

1. Use a drift punch of 2 mm to remove the grooved pin (Fig. 8,
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.
4
1
2
13
Repairs at the unit
6
5
7
3