Maintaining The Esi Probe - Thermo Scientific Surveyor MSQ Plus Hardware Manual

5
Routine and Preventive Maintenance

Maintaining the ESI Probe

Maintaining the ESI Probe
56 Surveyor MSQ Plus Hardware Manual
Table 4. Maintenance Schedule
Frequency Action
As needed Clean the source if a drop in sensitivity is seen during analyses.
Flush the capillaries after running an analysis that required buffered
solvents. Refer to
Replace the capillary if it becomes clogged. Refer to
Probe"
Clean the probe if it becomes contaminated. Refer to
ESI Probe"
Drain the oil from the oil mist filter and purge the oil in the forepump as
described in
page 48.
Monthly Clean the probe heater. Refer to
page 73.
Check the oil level and color in the rotary pump and add oil if necessary.
Refer to
that ships with the rotary pump for instructions on changing the oil.
3 to 6 months Replace the rotary pump oil after 3000 hours of operation. Refer to the
manual that ships with the pump.
> 6 months Clean the RF/dc prefilter. Refer to
page 86.
Flushing the probe on a regular basis helps to prevent contamination and blockage of its
capillary. But even with the best preventive maintenance, occasionally, the capillary can
become blocked and the internal components can become contaminated.
A significant increase in LC pump backpressure (that is, up to 300 psi at a flow rate of
1 mL/min added to the total LC system backpressure) can be symptomatic of a blocked
capillary. Instability in the MS signal can be symptomatic of a partially blocked capillary.
Replace the capillary if it becomes blocked or partially blocked.
CAUTION Wait for the source block and the probe heater assembly to cool before you
remove the ESI probe.
"Flushing the API Probes"
on page 56 or "Maintaining the APCI Probe"
on page 56 or "Maintaining the APCI Probe"
"Draining the Oil Mist Filter and Purging the Pump Oil"
"Maintaining the Forepump"
on page 48.
"Maintaining the ESI
on page
"Maintaining the
"Maintaining the Probe Heater"
on page 93. Refer to the manual
"Cleaning the RF/dc Prefilter"
67.
on page 67.
on
on
on
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