Leibinger JET3 up - Optional Equipment; External Head Print Ventilation - Assembly and Function

Group 8 Job Editor Page 89
JET3up Release R1.06
6.7 Optional equipment
6.7.1 External head print ventilation - assembly and function
Function:
External head ventilation is predominantly used for devices in safety class IP65 and
for print jobs in which the retractive suction of particles
(e.g. paper lint in the
printing industry) in printer circulations should be avoided.
For this purpose, the unit is provided with a head ventilation and a
housing
ventilation:
 Head ventilation:
The printer's print head is impinged on with a constant air flow
of 30l/h and thus the retractive suction of particles is prevented.
 Housing ventilation: With devices of protection class IP65, a great deal of hea
t
is generated due to the tight design of the housing. Due to this heat generation
in conjunction with the evaporation of the operating materials, an explosion
danger zone (Ex zone) can arise.
To prevent this, the interior space of the hydraulic housing
is impinged on with a
constant air flow of 70l/h and vented via a concealed drilled hole.
Assembly:
1. Outside of the rear panel of the housing:
The unit's pressure regulator valve is attached to the outside.
2. Inside of the rear wall of the housing:
Both of the throttle valves for the writing head ventilation and the housing
ventilation are attached to the inside. These valves are adjusted exactly as well
as sealed and may not be adjusted!
CAUTION – INSTALLATION OF PRINT HEAD
Both of the throttle valves are adjusted exactly and may not be
adjusted!
ATTENTION

Make sure that there is a permanent compressed air supply!
 The printer doesn’t monitor the permanent compressed air supply!
 There will be no warning in case the permanent comp
ressed air
supply fails!
 Operation is only permissible with dry, oil-free and filtered
compressed air (Filtering 8 µm) The use of otherwise prepared
compressed air can lead to damage and malfunctions!