User guide
TrueFeed manual
56
4. Operation
4.1 Starting up the MV-Hopper loader after installation
For safety reasons, the hopper loader is only activated when the TrueFeed is in the START mode. To
deactivate the hopper loader, in case of emergency, press the “STOP” button on the control. Be
aware that the TrueFeed will also deactivate.
1. Adjust the pressure regulator to a minimum of 58 PSI {4 bar} and adjust to a higher value if
necessary.
2. Adjust the air wand to the correct position, most applications start with Position 1.
3. Determine the correct filling level for the MV hopper loader - see Chapter 7.10 for adjustment of the
“filling start” weight level and “hopper empty” weight level.
4. For all TrueFeeds, the filling time, empty time, amount of filling cycles and filling alarm parameters
have to be set in the control by the user. See Chapter 7.10 for more information.
Filling time [sec.]
During this time the MV system sucks material into the vacuum chamber.
The filling time setting depends on several factors. Conair recommends
starting with the default of 20 seconds and adjust if necessary. For maximum
performance, use a filling time that will fill the loader until it is covering the
sight glass completely. A longer filling time will affect optimum performance.
Empty time [sec.]
During this time the cone that closes the chamber will open and material falls
down into the hopper of the dosing unit. Conair recommends starting with the
default of 5 seconds which will be sufficient in most applications. In case of
poor flowing material this time will need to be extended. A longer empty time
than necessary will affect optimum performance.
Fill cycles [number]
Number of extra fill cycles after the material is above the empty level.
Example:
When the amount of fill cycles is set to “0” the MV-loader will perform filling
cycles until the material level is above the “empty level”. When the amount of
fill cycles is set to “1” the MV-loader will perform 1 extra filling cycle after the
material level is above the “empty level”. Conair recommends starting with
the default of 3 extra filling cycles, setting more filling cycles than necessary
will affect optimum performance.