WATERS CORPORATION TQ, Operator'S Manual, Page: 55 / 192

Maintenance schedule
December 6, 2012, 71500126802IVD Rev. C 55
Maintenance schedule
The following table lists periodic maintenance schedules that ensure optimum
instrument performance.
The maintenance frequencies shown apply to instruments that normally
receive moderate use.
Maintenance schedule
Procedure Frequency For information...
Clean the instrument case. As required. See page 63 .
Empty the exhaust trap bottle
in the instrument exhaust
line.
Check daily, empty as
required.
See page 63 .
Empty the liquid trap bottle
in the roughing pump exhaust
line.
Check daily, empty as
required.
See page 65 .
Gas ballast the roughing
pump.
ESI – weekly; See page 68 .
Inspect and adjust the
roughing pump oil level.
Weekly. See page 71 .
Clean the source components. When sensitivity
decreases to
unacceptable levels.
See page 73 .
Clean or replace the ESI
probe tip.
When sensitivity
decreases to
unacceptable levels.
See page 108 .
Replace the ESI probe
capillary.
When sensitivity
decreases to
unacceptable levels or
sample flow is
inconsistent.
See page 109 .
Replace the ion block heater
cartridge.
If the heater fails to
heat when the
instrument is pumped
down (evacuated).
See page 116 .
Replace the source assembly
seals.
Annually. See page 121 .