Operator’s manual for Pentruder 8-20HF/iQ and Pentpak HF-power pack – Original instructions
Page 35
Switch for water valve:
Move the switch forward to start and stop the water flow through the
machine. The water flow will be switched on automatically when the blade
is started. The water will be left running when the blade motor is stopped
and the water must be switched off manually.
Potentiometer for blade
speed control
:
The minimum speed is set at 70% of the maximum speed. Full power is
available when the potentiometer knob is between 85 % and 100 % on
the potentiometer scale. At its maximum CW position, i.e. 100%, the
motor power output is slightly reduced, by approximately 0.4 kW.
Potentiometer for feed
and power regulation:
As long as the blade is spinning in the air, the potentiometer is used only
to control rapid feed of the machine. From the moment the blade touches
the concrete and a preset amperage draw is exceeded, the potentiometer
changes its function and is then used to control the power used to drive
the blade.
Between 80 - 100% the system will always try to reach maximum power.
At 100 % the feed regulation is more aggressive than at 90 or 80%, but
the machine will always try to reach maximum power also at the 80% or
90% setting. If the potentiometer is turned below 80% the power output
will be reduced correspondingly.
Joystick for control
of the movement of
the saw head and
radial arm:
Flick the joystick up or down to rotate the radial arm. Flick the joystick left
or right to move the saw head along the track.
In case of a jammed
Blade:
The power pack has an automatic function for resetting the frequency
inverter if the blade is jammed. Move the blade out of the cut, or at least
to a position where it can be started without too much resistance, and
press the blade ON/OFF switch forward once, then it takes approx 15
seconds for it to reset. Certain reset procedures are activated depending
on how sudden the stop was.
If the blade is jammed very, very abrupt, the reset procedure might not be
enough. In this case you need to unplug the unit from the power supply,
wait for 30 seconds and plug it in again.
NOTE: If one of the emergency stop buttons are pressed or the unit has been unplugged
from the power supply, both the blade speed and the feed and travel potentiometer must be
returned to zero before the machine is operational again.
