MAINTENANCE
A. THE BASE UNIT
If any fault develops, it must repaired by a qualified technician only. Contact
your CLARKE dealer for advice. Maintenance of the unit is limited to the following.
1.
If the machine is in constant use, inspect every 3-4 months, and use
dry
compressed
air to remove any dust deposit. Ensure all precautions are taken with regard to the
use of compressors to clean the electronic components.
2.
Check the air filter regularly. Condensate is drained off immediately the compressed
air supply is removed from the machine.
Whenever the machine is not used for 1 week or
more, the compressed air supply should be
disconnected completely.
On models King 50 & 70, the air filter assembly is to
be found beneath the cover, on the left hand
side of the machine.
To drain the condensate, turn the knurled nut (see
fig. 7), anticlockwise so that the drain is fully open.
Remember to screw the nut in again once
the condensate has drained.
B. THE TORCH ASSEMBLY
WARNING
NEVER ATTEMPT TO CARRY OUT ANY MAINTENANCE ON THE TORCH,
UNLESS THE MAINS SUPPLY IS DISCONNECTED
No special tools are required to replace torch parts. Simply unscrew the nozzle
assembly, and all components are easily replaced.
1.
The torch must be kept free of slag at all times, to ensure the free passage of
air.
2.
Check the condition of the electrode. One which is worn, i.e. has a crater 1.5
to 2mm deep at its centre, should be renewed. Unscrew the electrode only
when the cooling air flow has finished, to avoid damage to the torch body.
3. Check to ensure the hole in the nozzle is not too wide or deformed, as this may
cause problems for the cuting arc. A nozzle with a damaged or enlarged hole
should be renewed.
4. Check to ensure the holes in the protective ring are clear. Blocked holes or a
damaged ring may damage the torch due to overheating.
5. Check the condition of the torch sheath, ensuring that no parts are worn or cut,
or there are no signs of electrical discharge. A damaged sheath should be
renewed.
Fig. 7
15
