19
Minigraf M3
7. DIAGNOSTIC
7.1
SAFETY WARNINGS
The interventions must be executed by personnel properly trained and they must take all precautions in order to avoid
accidental starts.
7.2
TROUBLESHOOTING
TABLE 7. 2 - A
TROUBLE
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal the V-nails
ejection is irregular
Pressing the foot pedal for several times
the machine’s working that was correct
at the beginning becomes irregular later
Pressing the foot pedal the working
pressure indicated on the regulator
deeply decreases
Pressing the foot pedal the working
pressure indicated on the regulator
deeply decreases
POSSIBLE CAUSE
Insufficient working pressure
V-nails wrongly positioned into
the magazine
Guide channels damaged or
jammed
Claw pusher has insufficient
thrust
Claw head not suitable with V-
nails size
Faulty V-nails
Insufficient working pressure
Opened V-nails magazine
Faulty valves
Jammed valves because of
surplus of oil or condensation
Faulty pressure regulator
Air supply line too long or of
inadequate diameter
REMEDY
Check that the minimum value indicated
from main regulator is higher than 3 Bar
- Check that the V-nails sharpened side
(glue side) faces up
- Check that V-nails V vertex is pointing
toward machine’s external side
- Check that the guide channels are not
dirty or jammed
Check that the pressure of the regulator
feeding the claw pusher cylinder is at
least 2 Bar. If necessary, increase it by
10%.
Check that the number engraved on the
v-nail claw head match the V-nails size
- Replace the V-nails
Check that the air pressure coming out
from the compressor is at least 3 Bars.
Close the magazine by means of the
special lever
- Replace the foot pedal valve
- Replace the control valves
-Remove the surplus of oil and
condensation from the valves by
disconnecting the air lines one by one .
This will force out the oil/water.
-Replace the regulator
Replace theair line with a new one of
bigger diameter
