Operator’s manual Pentruder
®
3P8 HF-wire saw and Pentpak - Original instructions
34
5.1.2
Starting the wire
1.
Make sure the emergency stop button on the remote control is out (released position).
2.
Turn the start key on the wireless remote control to pos “1”. Two short beeps will follow and the green
LED on the wireless remote control will start flashing. The wireless remote control is now on but not yet
activated.
3.
To activate, turn the start key from pos “1” to the next position (like starting a car) and release.
Step b and c are not necessary when using the cable remote control.
4.
Push the green start button on the Pentpak and check that the green light comes on.
5.
Check that both swivelling guide wheels are tight (19 mm socket). Check their alignment with the desired
cut line.
6.
With the wire on the machine, and no guards mounted, and water nozzles or hoses adjusted, please pay
attention to the wire tension. On the slack side there should be some slack before attempting to start
the wire. Check that the wire is run over all wheels correct and has not jumped off during the set-up
procedure.
7.
Test the tension by hand by moving the wire on the slack side, that is the RH side when standing in front
of the main drive pulley, HF-motor pointing away from you. You should be able to move the wire
sideways 10 cm or so.
8.
Turn the both potentiometers on the remote control unit to their Zero position and put the switches and
joystick in neutral.
9.
Push the blue Switch for Water valve ON/OFF forward and hold and then, within 5 seconds, push the red
HF-motor ON/OFF switch forward, and then let go of both knobs to start the wire. The wire will start
rotating slowly and the water will start to flow. (We have chosen to let the cooling water from the HF-
motor clean the wire before it goes into the magazine, as traction is improved when the wire is as clean
as possible.)
10.
If needed, the direction the wire is running in can be revered during start up. Flick the blue switch
forward once, and the direction will be reversed. Flick it again and it will go the other (correct) way
again. This feature is there to make it easier to cut a shallow groove on the slack side, before the real
cutting starts. This function is disabled over 5% wire speed.
11.
As the initial cutting progresses, and if you see slack, (not enough tension in the wire, please move
Joystick UPWARDS manually, some short movements at a time, to "override" the automatic tensioning
by the software.
12.
Set the RH pot to 25%, and gradually increase the speed up to just a few %. Let the wire cut a shallow
grove in the cut object. If everything goes well, and the wire is running smoothly at VERY slow speed, the
machine can be stopped and the guards can be mounted.
13.
To stop the wire, push the HF-motor ON/OFF switch forward once.
14.
Mount all guards (see 4.8 Attach guards ) and lock them with their respective nuts and bolts. The upper
guard is held in position with the two R-clips.
15.
Start the wire again by returning the LH potentiometer (wire speed control) to ZERO, and push the blue
switch forward, hold it there and push the red switch forward. The wire will start again at low speed.
16.
Now increase RH power potentiometer (feed and power regulation) setting to 80%. Turn the LH
potentiometer (wire speed control) slowly up to 50%.
17.
Again, if you see excessive slack on the slack side, move Joystick UPWARDS manually, some short
movements at a time, to "override" the automatic tensioning which is controlled by the software.
18.
When you consider the wire to be running smoothly, set speed and power pots pot to 100%, unless the
cut object is small, then you must reduce the setting for the RH potentiometer to 25 % – max 75%.
