PROALL P Series, Service Manual, Page: 28 / 118

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5.4.7 MIX AUGER
WARNING!
The mix auger uses a limit switch in the lid that stops the mix auger from turning if the lid is open. If this switch
or electrical connection fails, then the mix auger will be disabled until a new switch or cable is installed. If the
switch and/or connection is bypassed in any way, then this will allow the operator to open the lid while the mix
auger is turning creating a potentially fatal hazard.

If the mix auger is not turning check for any alarm
indicators. The diagnostics message will read (Auger Limit
Switch Open!) and button #20 will flash red if auger lid is
not closed properly or if limit switch is not working.

If the lid switch alarm is active check for broken wires from
lid switch back to the connection in the hydraulic valve I/O
#1 block (port #8).

Check fuse F17. If this fuse is blown it is very likely there is
broken and shorted wire to the lid limit switch.

Check to see if the solenoid indicator light is ON.

Check the auger mix or auger reverse coil current in
Electrical Diagnostics. Is there current going to the coil?

If the mix auger turns in one direction and not the other it
may be the pilot solenoid valve .

Manually override the valve and see if the mix auger starts
turning in either direction.

If the mix auger still does not turn when manually
overridden, then it’s likely a plugged or stuck valve. Replace
the valve or swap with the opposite side if only one side
isn’t working to see if the issue reverses.

Replace the pilot solenoid valve if required.
A
A
B
B