Hydronix Hydro-Control VI Operator's Manual page 37

Chapter 7
The top diagram in Figure 15 shows a mix trace for a recipe that is configured with a Dry
Mix and Wet Mix time of 60 seconds. Both the Dry Mix and the Wet Mix reach stability sooner
than the 60 seconds defined. These mixing times maybe be reduced by approximately 30
seconds as indicated by the red cross. The lower diagram shows the resultant mix with a
shorter overall mixing time.
2.1.2 Setting the Water Quantity
To achieve the correct consistency (slump, workability) the correct amount of water must be
added and the simplest way to determine this is as follows.
Batches are made of the recipe required using the Preset mode. After each batch is
completed the output quality is checked and the water quantity for the next batch changed
if necessary. For the first batches the water is reduced to deliberately make mixes that are
too dry, and then the Trim function is used to open the valves to add more water until a point
where the mix consistency is correct. The recipe is then updated automatically with the trim
water that was added and can be run again. This process is detailed below.
After the correct water quantity has been determined the recipe can be calibrated using the
mix log as detailed in Chapter 8.
Setting the recipe parameters for water quantity and mixing times.
2.2
Task
Go to the Overview Screen and press the Menu button.
Select the Recipe Overview button.
Select the Create Recipe button.
Set the Main Water parameter.
Set the Dry Mix and Wet Mix Times.
Enter the Dry Weight, Pre-wet and Cement Timeout
(if used).
Select Finish to return to the Recipe Overview screen.
Action
Press
Press
Press
This is the quantity of water to be
dosed into the mix.
Set this to
approximately 10 litres less than the
final amount.
The rest will be added manually using
the trim function.
Initially select longer times than are
required, for example 70 seconds
each. These will be reduced later
when the performance of the mixer is
evaluated.
Press
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Running the First Mix
a value that is
37