Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 159)

Model 9110EH Instruction Manual Instrument Maintenance
9. INSTRUMENT MAINTENANCE
Predictive diagnostic functions including data acquisition, failure warnings and alarms built
into the analyzer allow the user to determine when repairs are necessary without perform-
ing unnecessary, preventative maintenance procedures. There is, however, a minimal
number of simple procedures that, when performed regularly, will ensure that the analyzer
continues to operate accurately and reliably over its lifetime. Repair and troubleshooting
procedures are covered in Chapter 11 of this manual.
NOTE
A span and zero calibration check must be performed following some of the
maintenance procedures listed below. Refer to Chapter 7.
CAUTION
Risk of electrical shock. Disconnect power before performing any
operations that require entry into the interior of the analyzer.
NOTE
The operations outlined in this chapter must be performed by
qualified maintenance personnel only.
9.1. Maintenance Schedule
Table 9-1 is the recommended maintenance schedule for the M9110EH. Please note that in
certain environments with high levels of dust, humidity or pollutant levels some
maintenance procedures may need to be performed more often than shown.
Table 9-1: M9110EH Preventive Maintenance Schedule
Item Action Frequency Cal
Check ?
Manual
Section
Date Performed
TEST functions Review and
evaluate
Weekly No Table A-
3
Particulate
filter
Change
particle filter
Weekly No 9.3.1
Zero/span
check Evaluate offset
and slope Weekly Yes 7.3, 7.6
Zero/span
calibration
Zero and span
calibration
Every 3
months
Yes 7.2,
7.4, 7.5
Table 9-1: M9110EH Preventive Maintenance Schedule (continued)
M9110EH Rev 0 145