2000-OSM, F1
5-1
SECTION 5. MAINTENANCE
PREVENTIVE MAINTENANCE
The analyzer design eliminates the need for extensive and complex maintenance. Where preventive
maintenance procedures require specific time frames or intervals, you should maintain an inspection
log and inspection data. Figure 5-1 lists inspection routines, with recommended time intervals for
each routine. In addition, you should verify analyzer calibration periodically to ensure operating
efficiency.
To aid in preventive maintenance, keep system chromatograms for reference and compare them to
current data to ensure early detection of a problem, whether in the analyzer or in the analysis itself.
It is the customer’s responsibility to ensure that all maintenance personnel assigned to work on
analyzers are trained and experienced in instrumentation maintenance and hazardous area
maintenance.
INTERVAL
ROUTINE
Daily
1.
Perform a visual inspection of the analyzer and check for:
a.
Damaged or inoperative gauges or meters
b.
Loose
control
knobs
c.
Loose
hardware
d.
Low
pressure
or
flow
indicators
e.
Equipment
grounding
connections
f.
Unsecured
or
loose
cables
2.
Check physical condition of analyzer for corrosion, rust,
etc. Take corrective action as necessary.
3.
Using the Data Package supplied with the analyzer, verify
all flow and pressure settings are as specified. Adjust as
necessary. Monitor gas usage to help detect leaks in
utility
gas
delivery
systems.
4.
Check
to
ensure
cylinder gas pressures are above 100
psig. Replace cylinders as necessary.
5.
Check
sampling
system
as applicable (i.e., pressures and
flows).
Monthly
Check air supply filters.
Monthly (Weekly
Check carrier line dryers; change as necessary to prevent
for first month to
pressure drop. Calibrate and compare resultant chromatograms
ensure stability
with those in Data Package.
as
required)
Figure 5-1. RECOMMENDED PREVENTIVE MAINTENANCE SCHEDULE
Gas Cylinder Replacement
When you use two cylinders to supply a gas, connect the cylinders in an automatic switchover
configuration to ensure continuous flow to the analyzer when you replace an exhausted cylinder. In
this configuration, the second cylinder switches in automatically when the first cylinder is exhausted