JULY 2019 DIGGA HALO OPERATORS MANUAL - PM-000198
user should observe the LED zero mode sequence for an indication of zero mode. Tap
the switch rmly to activate zero mode and the Halo LED lights will all ash blue for
a moment. When in zero mode, the middle section of the LED array will be blue also.
To exit zero mode, tap the switch again and the LED lights will all ash white for a
moment. Now the middle section of the LED array will display white.
Charging the battery
The battery should be charged after every use and at least once every 3 months if not
used regularly. This type of lithium battery will have a prolonged life if charged after
or before each use. Make sure the battery is never left hanging by the charger cord
as this could result in failure over time. The charger should only be used indoors and
out of direct sunlight in a cool, dry place (similar to where and how you would charge
a mobile phone). The battery should be charged fully before rst use. Batteries are
shipped at 30% charge as per recommended practice.
Best practices
The Halo Version 1 does not feature an on/off button for simplicity. The system will
turn on when the battery is connected and will turn off when disconnected. When con-
necting the battery to the Halo, allow the drive to hang stationary (no movement) for
30 seconds for the system to perform a start-up calibration. If this isn’t permitted, the
calibration may not complete. It’s not necessary to use the zero function however if
accuracy is important for a specic drilling application it is recommended to manually
align the drive to a completely plumb orientation and use the zero mode set absolute
plumb. Whilst the Halo is calibrated to plumb prior to delivery to customers, using the
zero function to set absolute plumb at the beginning of each day when accuracy is
important will remove any error caused by possible drift over time.
Limitations
The Halo uses an inclinometer instrument to measure the angle of the drive. Because
there is a certain amount of mechanical play between the auger/pile and the drive
itself, the operator should be aware of this limitation and that the angle of the Halo is
sensing the angle of the drive, not the auger.
The inner workings of the inclinometer are susceptible to heavy vibration and jolting.
Whilst a lot of effort and testing has gone into minimising these effects for regular use,
drilling into rocky or tough ground will produce ‘shocks’ to the drive (also felt through
the operator) which will temporarily show an incorrect reading of the angle data on the
LED array. Similar to ‘knocking’ a spirit level with a hammer whilst taking a reading. If
the operator wishes to take an accurate reading to gauge the orientation of their drill-
ing, simply stop the rotation of the auger or pile for a brief moment and the calculation
will display an accurate reading with which the operator can adjust their machine and
recommence drilling. If the LED display exhibits erratic behaviour as a result of an
impact or vibration, either disconnect the power during this type of use, or disconnect
and reconnect the battery to reset the system.
Clearing debris from the LED groove
Where mud or debris becomes heavily caked into the LED ring groove, do not use
force to remove the debris. If pressure washing and normal cleaning methods do not
prevail, a screw driver will scratch the clear plastic but will remove any caked on mud.
Do not under any circumstances use a hammer or any other device to chisel at the
LED ring.
