Maintenance & Service
Match Valve Maintenance
Using the LI-6400 19-23
The white polyethylene gaskets do not recover nearly as well as black neo-
prene after being compressed, and they are much more of a pain to remove.
Therefore, to avoid changing them anymore often than necessary:
Match Valve Maintenance
Unsticking the Match Valve
The match valve pads are coated with molybdenum disulfide, a grey powdery
dry lubricant, used to prevent the pads from sticking. These pads might have
a tendency to stick down (usually after a period of storage) and prevent the
valve from moving. There are a few courses of action to take, should this hap-
pen to you.
Exercise
In OPENÕs Welcome menu there is an entry entitled ÒTests and DiagnosticsÓ,
which leads to a menu containing ÒMatch Valve TesterÓ. This program al-
lows you to ÒmanuallyÓ (via the function keys) control the match valve.
DonÕt leave the chamber latched closed (with the gas-
kets compressed) any more than is absolutely necessary.
When in match mode, the right end
Match Valve Test Program
Toggle
Quit
of the paddle should be down.
Match mode is OFF
Figure 19-18. The Match Valve manual control program. The status
line indicates where the valve should be, not necessarily where it ac-
tually is.
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