Page 22
P30U Instruction Manual Revision : 1
1st December 2006
To renew the consumables, the following procedure should be adopted, remembering that care and
cleanliness are of the utmost importance.
1. Recover the torch to the surface.
2. Switch the machine off at the mains supply or Main Isolator.
2. Remove the Front Cap. The cap is a push fit over the O ring seated in a groove in the outer diameter
of the Torch Body and engages with a sealing
ring on the Front Insulator.
3.
Unscrew the Nozzle with the special tool
supplied. (See illustration left).
4.
Check the condition of the Electrode
Assembly. If it is to be removed, grip the
Electrode Assembly with the special Electrode
Pliers provided, and pull firmly out from the
torch body. (See illustration right).
5. Press a new Electrode Assembly carefully but firmly over the contact tube until it is fully home and
central. Use the handle of the Nozzle Tool which has been prepared for this purpose. THIS IS
VERY IMPORTANT ! If the Electrode is not pressed fully home onto the Contact Tube, the Swirl
Bush may be partly crushed by the Nozzle, and will interfere with the airflow.
6. Carefully screw the Nozzle into the Torch Head using the special tool until fully home. DO NOT
OVER TIGHTEN.
7. Apply a liberal quantity of Silicone Grease around the front of the torch, especially to fill the space
between the nozzle, front cap and sealing ring.
8. Refit the push fit Front Cap. Apply additional grease over the outside of the front cap. The grease will
provide a first line of defence against material blown back from the cutting process.
Remember that cleanliness and care must be taken when fitting consumables. Do not allow dirt to
obstruct the threaded parts of the torch. Take care when engaging threaded parts not to damage the
thread.
CONTACT TUBE REPLACEMENT.
Should the Contact Tube need changing, it is removed by inserting the 1/8" allen key supplied into the
centre and unscrewing. Replacement is the reverse of removal but it is important not to over tighten
as this may cause subsequent electrode fitment to be off centre, producing bevel cuts.