Debris Container - No Full Ascent - Kärcher KMR 1250 B Service Manual

KMR 1250 B, LPG, D
Debris Container – No Full Ascent
Hydraulic unit w/ pressure relief valve
Adjusting pressure relief valve
Adjusting pressure relief valve
1
2
3
4 5
Troubleshooting Information
Adjust pressure relief valve
Raise empty or full debris container to maximum
attainable height (two-hand operation). In this
position hold on the two buttons and measure
the current draw of the hydraulic unit (see "tech-
nical specification"). The current draw provides
a measure of the opening pressure set on the
pressure relief valve.
Hydraulic unit,
adjust pressure relief valve
– Remove hydraulic unit but do not discon-
nect hydraulic hoses.
– Holding valve insert (3) with wrench, unscrew
cap of pressure relief valve (1). The cap
conceals the valve adjusting screw.
– Continue to hold valve insert (3) with wrench,
loosen lock nut (2) on valve adjusting screw.
– Using a flat screwdriver, turn adjusting screw:
One-half CW turn increases current draw by
roughly 4 to 5 A (approx. 10 bar, approx. 145
psi).
– Finish by tightening lock nut on adjusting
screw, again installing screw cap (1).
– Install hydraulic unit: Perform function test,
and measure current draw.
Hydraulic unit,
adjust pressure relief valve
– Remove hydraulic unit but do not discon-
nect hydraulic hoses.
– Remove screw cap (4). Cap conceals ad-
justing screw (5).
– Using a stubby screwdriver, turn adjusting
screw:
One-half CW turn increases current draw by
roughly 4 to 5 A (approx. 10 bar, approx. 145
psi).
– Finish by installing screw cap (4).
– Install hydraulic unit: Perform function test,
and measure current draw.
1 Cap
2 Lock nut
3 Valve insert
4 Screw cap
5 Adjusting screw
ORIGINAL
REVISED
45