Mitre-Mite VN 42 - 7. DIAGNOSTIC; 7.2 TROUBLESHOOTING

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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-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
ejection is irregular
Pressing the foot pedal the V-nail
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 regulator deeply
decreases
POSSIBLE CAUSE
Insufficient working pressure
V-nails positioned wrong into
the magazine
Guide channels damaged or
jammed
Clawpusher 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 water
Faulty pressure regulator
Feed pipe 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 on the regulator
feeding the clawpusher cylinder is at least
2 Bar. If necessary, increase it by 10%.
Check that the number engraved on the
v-nail clawhead matches up with the V-
nails size
- Replace the V-nails
- Use shorter sticks of V-nails
Check that the air pressure coming out
from the compressor is at least 3 Bar.
Close the magazine by means of the
special wire
- Replace the foot pedal valve
- Replace the control valves
-Remove the surplus of oil and water from
the valves by disconnecting the air lines
one by one, forcing out the water with
the air.
-Replace the regulator
Replace the piping with a new one of
bigger diameter