SPECTRO SPECTROTEST Original Operating Instructions page 39

Fault
No correct focal spot in
the spark mode.
SPECTROTEST — 05.12.2017
Possible cause
The pressure controller on
the gas cylinder is not
open wide enough.
The pressure monitor and
the flow controller inside
the unit are not properly
adjusted any more.
The argon supply line
quick-release coupling is
not properly locked on the
unit.
The adapter is not locked
in properly up to the stop.
The electrode gap is not
correct.
The sample surface has
not been properly
prepared (not polished,
observe roughness).
The sample surface is not
flat enough or it has air
inclusions.
The argon outlet (exhaust)
of the sample probe is
plugged with condensate.
Insufficient maintenance
(cleaning) of the adapter,
especially of the Teflon
insert, has caused
clogging of the flushing
bores.
Troubleshooting
Remedy
See the error message in the
software status line.
Adjust the required pressure.
Please contact your service
center.
Let the quick-release coupling
lock properly.
Check whether the adapter is
properly seated and correct it if
necessary.
Adjust the electrode gap using
the spacer.
Prepare the surface to be tested
in a suitable way with the aid of
abrasive paper (disk sander or
hand sander).
Prepare the surface to be tested
in a suitable way with the aid of
abrasive paper (disk sander or
hand sander).
Flush it with the aid of the "Flush"
function.
While flushing, close the sample
opening of the adapter and close
the exhaust for approx. 1 second,
then open it.
Clean the adapter thoroughly.
— 39