Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 209)

Instrument Maintenance Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 189
Table 6-1: 9110TH/M Preventive Maintenance Schedule
ITEM ACTION FREQUENCY
CAL
CHECK
MANUAL
SECTION
DATE PERFORMED
1 Particulate Filter Change filter Weekly No 9.3.1
Verify Test Functions
Review and
evaluate
Weekly No
9.2; Appendix
C
Zero/Span Check
Evaluate offset and
slope
Weekly -- 7.3, 7.5, 7.7
1 Zero/Span
Calibration
Zero and span
calibration
Every 3 months --
7.2, 7.4, 7.6,
7.7, 7,8
NO
2
Converter
Replace converter
& check efficiency
Every 3 years or if
conversion efficiency
< 96%
Yes if CE
factor is
used
--
1 External Zero Air
Scrubber (Optional)
Exchange chemical Every 3 months No 3.5.3.2
1 Reaction Cell
Window
Clean optics,
Change O-rings
Annually or as
necessary
Yes 6.4.5
1 Air Inlet Filter Of
Perma Pure Dryer
Change particle
filter
Annually No 6.4.2
Pneumatic Sub-
System
Check for leaks in
gas flow paths
Annually or after
repairs involving
pneumatics
Yes on
leaks, else
no
7.5.1, 7.5.2
1 All Critical Flow
Orifice O-Rings &
Sintered Filters
Replace Annually Yes 6.4.6
1, 2 Pump Rebuild head Annually Yes 9.3.4
Inline Exhaust
Scrubber
Replace Annually No
Pmt Sensor
Hardware Calibration
Low-level hardware
calibration
On PMT/ preamp
changes & if
0.7< SLOPE >1.3
Yes 11.6.5
1 These Items are required to maintain full warranty, all other items are strongly recommended.
2 A pump rebuild kit is available from TAI Technical Support including all instructions and required parts (the pump part number is on the label of the pump itself).
6.2.