PROALL P Series, Руководство по обслуживанию, Страница: 29 / 118

29
5.4.8 BOOM/CHUTE/SWING
All functions:

If the boom, chute or swing seem slow or is not moving
check the speed settings on the Mixer Settings and
Maintenance screen .

All three functions have indicator lights on the coils.
Current draw readings are accessible in the Electrical
Diagnostics screen.

These three functions run off the auger hydraulic circuit, so
pressure can be monitored by reading the auger pump
pressure.

In the event of an electrical failure all three functions can be
manually overridden to stow the mix auger and make the
truck ready for transport. See valve manual overrides
section.
Boom:

If the boom creeps down on its own when loaded the boom
counterbalance valve needs to be adjusted. Loosen the
locknut with a 9/16” socket and turn the screw CCW using a
4mm Allen key to increase the pressure setting until the
boom stops creeping. Tighten the lock nut.
Chute Tilt:

If the chute creeps down on its own when loaded the chute
counterbalance valve needs to be adjusted. Loosen the
locknut with a 19mm wrench and turn the screw CW using
an 8mm Allen key to increase the pressure setting until the
chute stops creeping. Tighten the lock nut.
Chute Extend/Retract: (Special Version, may not apply)

The chute extension circuit is shared with the boom and
only one can be activated at a time. The diverter valve is
energized when the chute extension function is on.

A cross port relief valve protects the chute extension
system from excessive loads by limiting the pressure below
that of the auger pump max pressure. This valve is pre
‐
set
both sides to 2500psi, but it is adjustable up to 3300psi.

The extension chutes are sequenced in and out by an
adjustable sequence valve circuit. Only one chute can move
at a time. Sequence valve adjusts the out
‐
sequence
pressure and is pre
‐
set to 1500psi. Sequence valve
adjusts the in
‐
sequence pressure and is pre
‐
set to 2000psi.
D
B
B
A
C
D
A
C
E
E
F
G