37
GM 2800EA
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OPERATING MANUAL
EDITION 10/2005
PART NO. DOC0388891
8.4
ELECTRODE REPLACEMENT
Electrode
If the electrode is damaged (bent or broken) by incorrect handling, the valve needle head
(12) must be replaced.
1. Remove valve rod as described in paragraph 8.2.
2. Carefully clamp the valve rod extension (11) and pull off the needle head (12) using
small pliers.
3. Manually press the new needle head (12) onto the resistor housing (13).
Note
For easier assembly fi t the valve needle with the electrode pressed into a cork.
4. Refi t valve rod as described in paragraph 8.2.
Attention:
Make sure that the contact spring is properly fi tted (hooked-in) to the valve stem.
Attention:
Do not damage sealing surfaces
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