Service and Maintenance -
Removing the Gas Extraction Device and Checking
70
7.5
Removing the Gas Extraction Device and Checking Penetrability
Fig.
7-1:
Removing the gas
extraction device (work
steps specified)
e
Securing mechanism for protective
pipe
f
Protective pipe for gas extraction
device, with sintered metal pre-filter
e
Securing mechanism for protective
pipe
f
Protective pipe for gas extraction
device, with sintered metal pre-filter
1.
Remove the locking element
(e)
for the protective pipe
(f)
by removing the lower
safety splint.
2.
Unscrew the protective pipe
(f)
and carefully push forwards to remove.
3.
Unscrew in the absolute pressure capillary
(b)
by hand.
4.
Unscrew the gas extraction device
(a)
and carefully push forwards to remove.
IMPORTANT!
The tip of the gas extraction device, which projects into the probe, is very hot!
5.
Check the penetrability of the gas extraction device.
Place one side into a tumbler and blow compressed air through it.
If the gas extraction device is blocked, it must be replaced. The capillary can also
be unblocked by heating it to a very high temperature and by using a wire (see
below). If this does not succeed, the GED must be exchanged.
6.
To install, carry out the above steps in reverse order.
