Carbolite Work Tube End Seals - Manual (Page 9)

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MS76 – 1.00
4.0 M AINTENANCE
4.1 General maintenance
Preventive rather than reactive maintenance is to be preferred. The type and frequency depends on
end seal use: the following are recommended.
4.1.1 Cleaning
The use of a lint free cloth and de-ionised water is recommended for cleaning both the metal parts
of the end seal and the silicone/Viton seals.
After-sales service
Carbolite’s service division (Carbolite Engineering Services) has a team of service engineers
capable of repair, calibration and preventive maintenance of furnace and oven products at our
customers’ premises throughout the world. We also sell spares by mail order. A telephone call or
email often enables a fault to be diagnosed and the necessary spare part despatched.
To contact Carbolite Engineering Services or Carbolite, please see the back page of this manual.
4.2 Recommended spare parts kits
Spare silicone/Viton seals are recommended and can be supplied at time of order or at a later date.
5.0 R EPAIR AND R EPLACEMENT
Due to the importance of the silicone ‘O’ ring mating surfaces in achieving a high vacuum and
positive gas seal, it may be necessary to re-machine the metal surfaces of the end seal.
This can be done at the Carbolite factory.
‘O’ rings can be supplied as spare parts to be fitted by the end user.
5.1 F AULT A NALYSIS
Unable to achieve a high vacuum

Ensure end seals are clean and free from dirt particles.

Inspect Silicone/Viton ‘O’ rings for damage and cuts.

Ensure end seals have been tightened adequately to the work tube.

Check work tube for excessive dirt or cracks.

Check all external vacuum equipment for leaks
End seal will not remain on work tube

Ensure the end seal and tube is a correct dimensional fit as specified in the manual.
 Ensure silicone ‘O’ rings are in good condition without defect.

Ensure end seal has been adequately tightened.