Maintaining
74
5
Contacting Waters Technical Service
North American customers who experience maintenance problems they cannot resolve
should contact Waters Technical Service at 800 252-4752. Others should phone their local
Waters subsidiary or Waters corporate headquarters in Milford, Massachusetts (U.S.A.).
lists periodic maintenance schedules you should observe to ensure the
instrument’s optimal performance.
Note:
The maintenance frequencies shown apply to instruments that normally receive
moderate use.
Table 5-1 Maintenance Schedule
Maintenance Procedure
Frequency
Gas-ballast the rotary pump.
Daily (APCI)
Weekly (ESI)
Check the rotary pump oil, and top-off when
necessary.
Weekly
Replace the rotary pump oil.
Every 3 months of continuous
operation, or whenever the oil
appears markedly discolored
Clean the cone gas nozzle, sample cone, and
baffle plate.
When sensitivity decreases to
unacceptable levels
Clean the ESI APCI probe tip, or replace the ESI
capillary.
Replace the APCI fused silica.
When sensitivity decreases to
unacceptable levels
Clean the corona discharge needle (APCI mode).
When sensitivity decreases to
unacceptable levels
Clean the ion block assembly.
When it is visibly fouled
When background or peak
contaminants are unaccept- ably
high
Clean all source components.
When sensitivity decreases to
unacceptable levels
When cleaning the cone gas
nozzle, sample cone, and baffle
plate fails to improve results
Summary of Contents for Micromass ZQ 2000
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