PROALL P Series, Service Manual, Page: 22 / 118

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
Make sure water pump inlet gate valve is open.

Check to make sure water ON/OFF valve is opening.

Check air regulator is 75psi or higher.

Check to see if water ON/OFF valve connecter light is
ON.

Is the mixer set to Dry Mix Mode (Mixer Control)?

Is the outlet check valve stuck closed? You can
temporarily remove the check valve from the circuit by
disconnecting cam lock .
5.4.2 ADMIX
IMPORTANT!
The admix system on the Commander mixer works in the same way as the water system. The operator has a
choice on how to control the admixture output. In auto mode (Admix Auto and Admix Electronic is selected in
Mixer Settings and Mixer Options) the computer will control the pump speed to meet flow targets. In manual
mode (Mixer Settings, Admix 1,2 Manual) the operator can control the pump speed directly. The third operation
is to run the pump at max speed and use the control valves to manually control the output flow. This third
mode must have both Admix Electric and Admix Auto de-selected in Mixer Settings and Mixer Options.
Admix is flowing into mix bowl:

If the Commander system is showing an auto admix alarm,
then this is an indication that the output flow is not
matching the set-point flow.

Check to see if a green bar or digital reading is showing for
flow. If no flow reading is showing on the screen this is the
reason for the alarm if in auto mode (see the Flow Meters
section for more detailed troubleshooting).

Flow readings can be checked quickly by putting the admix
pump in “Prime” mode (amber light) on the keypad.

Check the flow meter K-Factor in the Sensor Calibration
screen to ensure it isn’t zero (div by zero). The default
setting varies based on the admix outputs for your mixer.
o
Low flow system default is 30000 pulses/gal (7925
pulses/litre)
o
Medium flow system default is 15000 pulses/gal
(3962 pulses/litre)
o
High flow system default is 4000 pulses/gal (1057
pulses/litre)
o
If unsure which system you have check the side of
the flow meter for the label showing flow rating and
K-factor.
D
E
G
F
F
G
A