ELTRA ELEMENTRAC CS-i - Page 59

Maintenance
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4. Unscrew the wing nuts (2) and (3) on the bottom furnace lock (3):
Fig. 21: Wing nuts on the bottom furnace lock
5. Pull the bottom furnace lock (1) down and off.
The O-ring on the underneath of the furnace is now accessible:
Fig. 22: O-ring on the bottom furnace lock
6. Remove the O-ring (4).
7. Apply a thin layer high vacuum silicon grease (Part No. 92610) to the inside of the new O-
ring (Part No. 70380).
8. Insert the new O-ring on the underneath of the furnace on the combustion tube.
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