Servicing; General Servicing; High-Pressure Hose; Repairs At The Unit - WAGNER PROSPRAY 3.20 Operating Manual

SERVICING / REPAIRS AT THE UNIT
11

SERVICING

11.1

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.
11.2

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.
The risk of damage rises with the age of the
high-pressure hose. Wagner recommends
replacing high-pressure hoses after 6 years.
16
12

REPAIRS AT THE UNIT

Switch the unit OFF.
Before all repair work: Unplug the power plug
from the outlet.
12.1

RELIEF VALVE

The valve housing (4) should not be repaired. If
worn, it should always be replaced with a new
one.
Attention
6
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.
EN
ProSpray 3.20
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