Waters ACQUITY RDa, Overview And Maintenance Manual

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3 Maintenance procedures
This section provides the maintenance guidelines and procedures necessary to maintain the
device's performance.
Keep to a maintenance schedule, and perform maintenance as required and described in this
section.
3.1 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.
Table 3–1: Maintenance schedule
Procedure Frequency Additional information
Replace the probe capillary
assembly When sensitivity decreases to
unacceptable levels See Replacing the probe
capillary assembly (Page 52) .
Replace the aperture disc As required See Replacing the aperture
disc (Page 32) .
Replace or refit the source
enclosure o-ring As required See Replacing or refitting the
source enclosure o-ring (Page
31)
.
Clean the source components When sensitivity decreases to
unacceptable levels
See Cleaning the source
components (Page 35) .
Replace the air filters Annually See Replacing the air filters
(Page 55) .
Clean the instrument case As required See Cleaning the exterior of
the equipment (Page 55) .
Inspect and adjust the rotary
backing pump's oil level Weekly See Maintaining the rotary
backing pump’s oil (Page 61) .
Empty the exhaust trap bottle
in the instrument exhaust line Check daily, empty as required See Emptying the source
exhaust trap bottle (Page 60) .
Change the rotary backing
pump oil Annually See Maintaining the rotary
backing pump’s oil (Page 61) .
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
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