Presto CONTI COMPACT CC-20 V Operating Manual page 63

Maintenance
• Remove possibly existing foreign
substances (e.g. tools or similar)
from the pressing chamber.
• Check by the help of an afore
trained person the faultlessly
function of the machine. Agree on
a clear hand signal for the
immediate stop if the machine.
• Let the press body drive several
times back and forth in operation
mode "Hand".
• Pay attention that neither
considerable pressure fluctuations
at the pressure control nor
scorings on the upper side of the
press body appear.
• Stop the machine if any of the
indications described above
appear.
• Repeat if necessary the adjusting
works. Always begin the
maintenance work with taking the
necessary safety measures, see 1
paragraph of this maintenance
item.
When pressing plastic foils a minimal
cutting gap is particularly important. Initial
pressures of approx. 100 bar during the
return stroke indicate jamming through
foil which is taken up as a result of a
cutting gap which is too large. Blunt knives
/ counter blades can contribute to this
fault.
7.4.17 Counter knives and knives on the
press body: inspecting the condition for
wear, if necessary replace
Knives and counter knives should be
replaced if the cutting edges are damaged
and / or have a radius of >0.5 mm. Knives
(1) and counter (2) knives must be
completely changed.
• First move the press body far
enough in the direction open end
position until knife and counter
blade are readily accessible.
st
Fig. 93: knives and counter knives
• Replace the knives completely
(tightening torque = 100 Nm).
• Replace the counter blades
completely (tightening torque =
100 Nm).
• Set the cutting gap.
Continue as for "Adjusting the cutting
gap". (see 0)
04/2015 S. 63
Observe safety conditions!
SWITCHING OFF & SECURE
(see 7.1)