Welger RP 202 CLASSIC Operating Manual page 44

fig. 52
fig. 53
fig. 54
40
Hydraulic protection of the cutter blades:
Note: To safeguard the cutting device from overload the cutter
blades are protected in common by a hydraulic pressure valve.
This pressure valve responds when a factory-set pressure is
reached.. I. e. this is also the only pressure which is available for
switching on the blades. Depending on the conditions, the
hydraulic pressure may be insufficient if the blade slots are
clogged.
Attention:
For daily operation the two ball valves must be positioned in
parallel (see fig. 52)!
Remedy:
1. (Left machine side, fig. 52 and fig. 53:) Left ball valve must
be set to position „180 bar". Right ball valve of the hydraulic
block must point towards the machine.
2. Set the connected tractor control valve to „Raise" and leave
it in this position until the cutting device moves to working
position.
3. Set the connected tractor control valve to „Lower" and leave
it in this position until the cutting device disappears again in
the swivel floor.
4. Repeat points 2 and 3 as needed until the blades are
operating smoothly.
5. (Left machine side, fig. 52 and fig. 53:) Reset left ball valve
of the hydraulic block to position „35 bar".
6. Set the connected tractor control valve to „Raise" and leave
it in this position until the cutting device moves to working
position.
7. Set the connected tractor control valve to „Lower" and leave
it in this position until the cutting device disappears again in
the swivel floor.
Attention: If the ball valve lever (fig. 54) points to the position
„180 bar", the common protection of the cutter blades is
deactivated!
After raising of the cutter blades, the lever of the ball valve must
be reset to the „35 bar" position!
It is absolutely necessary that finally the cutting device is once
again lowered and raised (see points 2 and 3). Otherwise
machine overload will result in cancellation of the warranty!
WELGER RP 202 • RP 220 • RP 302 • RP 320