7. operating the flexipress - Grass

8. TROUBLE SHOOTING AND PROBLEM SOLVING
8-203 The Horizontal Drilling Head Motor Does Not Run
Pneumatic causes
- Remove all the drill bits from the horizontal drilling head.
- Place test piece on machine table and press it against the stop pins of the fence.
- Swing the insertion die arm down to the stop.
Important: The distance between the hold-down plate and the workpiece to be clamped must not be
more than 6 mm. If the distance is more than 6 mm, a thicker hold-down plate must be used.
- Clamp the workpiece with the hold-down plate. The selector switch for clamping the workpiece is shown
as “?” on Fig. 4-004-xx
- Remove pneumatic hose “H” from non-return throttle valve “12” at the back of the switchgear cabinet (Fig.
4-002-06) and check whether air comes out at the pneumatic hose when the horizontal drilling head start
button is pressed. If no air is released, this means there is a problem in the pneumatic control system.
Electrical causes
- Is the machine plugged in?
- Check the fuses on the factory distribution panel
- Is the main switch turned on?
- Turn off the main switch, open the switchgear cabinet with the key and press the red buttons on the
thermal overcurrent relays. Check automatic fuses and/or blowout fuse. Replace if necessary. Close the
switchgear cabinet.
- Turn the main switch back on
Mechanical causes
- Turn off the main switch. Check whether it is possible to turn the gearbox manually by rotating one of the
spindles. This should turn the fan wheel in the electric motor. If not, the gearbox is mechanically damaged.
If the above tips do not help, please call in
a pneumatics specialist (pneumatic diagrams, section 4-006) or
a licensed electrician (wiring diagrams, section 4-007).
8-204 Horizontal Drilling Head Does Not Move Forward
- Turn off the main switch
- Check the compressed air supply line
- Check the air pressure on the pressure gauge. It should be 5.5 - 6 bar
- Check to ensure that all pneumatic lines inside the Flexipress are connected and undamaged.
- Adjust the non-return throttle valve “13” on Fig. 4-002-03 in + direction as far as possible.
- Remove all the drill bits from the horizontal drilling head
- Place a test piece on the machine table and press it against the stop pins on the fence
- Swing the insertion die arm down to the stop.
Important: The distance between the hold-down plate and the workpiece to be clamped must not be
more than 6 mm. If the distance is more than 6 mm, a thicker hold-down plate must be used.
- Clamp the workpiece with the hold-down plate. The selector switch for clamping the workpiece is shown
as “3” on Fig. 4-004-01
- Remove the pneumatic hose from the rear connection on the pneumatic cylinder and check whether air
comes out at the pneumatic hose when the horizontal drilling head start button is pressed. The cover on
the back must be removed to do this.
Warning: Keep hands away from moving parts.
If air is released, there is a problem with the pneumatic cylinder
If no air is released, there is a problem in the control system.
If the above tips do not help, please call in a pneumatics specialist (pneumatic diagram section
4-006).
The star in your cabinet
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