Index revision : H
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7. Maintenance
WARNING : Switch off the electrical supply of the CRN 457 module before connecting the spray
gun. Before disconnecting the spray gun/ the atomizer, extinguish, switch off the
power supply of the CRN 457 (if not, a malfunction can occur).
7.1. Deflector and nozzle
7.1.1. Disassembly
Deflector
• To disassemble the deflector, simply pull it. It is not necessary to remove the nozzle nut.
Nozzle
• Remove the deflector.
• Unscrew the nozzle nut manually.
• Remove the nozzle.
7.1.2. Assembly
• Proceed in reverse order having first checked and cleaned the different components. Replace
them if necessary.
7.2. Vertical powder pipe
7.2.1. Disassembly
• Remove the powder union.
• Start unscrewing the powder pipe using a 17-mm ring wrench and then continue manually.
WARNING : This wrench is required, otherwise there is a risk of damaging the material of the
powder pipe.
• Remove the powder pipe from the handle assembly.
7.2.2. Assembly
• Clean the interior of the powder pipe with compressed air.
• Check the state of the seals and the powder pipe. Replace them if necessary.
• Install the pipe in the handle assembly, it locates automatically in the powder elbow, then push it
in until it stops.
• Tighten manually then continue tightening using the 17-mm ring wrench.
• Connect the powder union to the vertical pipe.
