Before opening the printhead housing, please adhere to these
precautions:
▪ Ensure that the printer is switched off and disconnected from the mains supply.
▪ Discharge yourself before handling the equipment (a grounding wrist strap should be used).
▪ Use an ESD safe workplace to do any repairs or for storing the piëzo head or PCB’s.
▪ Do not touch the front plate of the printhead with bare hands.
▪ Do not place the equipment on or near materials such as Styrofoam, plastic and vinyl. Keep
printhead or PCB’s in an anti-static bag used for transporting until ready to fit.
Other useful precautions:
▪ Residue on the front plate should be removed with cleaner. Do not rub the front plate as there is a
change debris will be pushed in the nozzles and/or the front plate can get damaged due to this.
▪ Use only Kortho GJ ink as this is ink is 100% compatible with all materials used in the coding unit.
▪ The printhead should be free from any condensation to avoid corrosion.
10.4.2 Open the printhead housing
1. Switch off the control unit and disconnect the mains power cable.
2. Put on protection gloves and use safety goggles for personal protection.
3. Protect the host machine surface underneath the printhead housing against contamination with ink
4. Unscrew the lock screws (6) to release the printhead cover (7).
Fig. 10.1 Removing the printhead cover
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