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Spares/Options List Q200 User Manual
200120/Revision 10 C-6
that contains excessive levels of oxygen or other electron capturing gases may be
suspected. Detector contamination is dealt with by entering a cleaning cycle. A
contaminated gas supply may result from incorrect filling of the internal cylinder,
allowing excessive levels of oxygen to enter the internal cylinder or a contaminated
supply cylinder used as an external gas supply or to fill the internal cylinder.
If the detector frequency is satisfactory with the pump off, for example <5kHz, but high
with the pump on, the inlet, either sinter or capillary should be removed and the seals
inspected for damage allowing air leaks into the detector with the pump on. In this case
the seal on the inlet probe should be changed. If the seal appears satisfactory, the inlet
may be contaminated and the instrument should be cleaned with the pump on by
entering the clean mode directly from the frequency display in the 'Diagnostics' menu
having set the pump to on in the frequency display in the 'Diagnostics' menu. If this
does not improve the detector frequency, the inlet, either sinter or capillary should be
changed. Appendix D contains details of the part numbers of the seals and inlets that
may be required.
C.3.3 N
O
C
HARGER WARNING
This warning is given when clean mode is entered with no battery charger connected.
The display will show:
Warn: No Charger
Performing a clean without a battery charger seriously depletes the battery life.
Pressing the
key again will cause the instrument to continue with the clean cycle
although the battery charger is not supplying power to the instrument. Pressing the
key will abort the clean.
C.3.4 N
O
P
RINTER
W
ARNING
When the user presses the
key at various points if no printer is connected this
warning will be displayed. The display will show:
Warn: No Printer
Pressing the
key will cancel the warning.
C.3.5 C
HECK
B
ATTERY
W
ARNING
When the battery voltage falls below 11 Volts this warning is activated to indicate the
battery will either need replacing or recharging within a short period. The display will
show:
Warn: Check Battery
The recommended course of action would be to check the continuity of the inline fuse
in case a high resistance connection is present, recharge or replace the battery.