Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 160)

Instrument Maintenance Model 9110EH Instruction Manual
Item Action Frequency Cal
Check ?
Manual
Section
Date Performed
NO
2
converter Check
conversion
efficiency
Every 3
months Yes on
change,
else no
9.3.8
External zero
air scrubber
(optional)
Exchange
chemical Every 3
months No 9.3.7
External dryer
(optional)
Replace
chemical
When
indicator
color
changes
No
Ozone filter Change
chemical
Annually Yes 9.3.3
Reaction cell
window Clean Annually or
as
necessary
Yes 9.3.9
DFU filter (air
inlet filter of
Perma Pure
dryer, pump
dust filter
and IZS
filter)
Change
particle filter
Annually No 9.3.2
9.3.7
Pneumatic
sub-system
Check for leaks
in gas flow
paths
Annually or
after
repairs
involving
pneumatics
Yes on
leaks,
else no
11.5.1,
11.5.2
Reaction cell
and O
3
O-
rings and
sintered
filters
Replace Annually Yes on
Rcell or
PMT O-
rings.
9.3.10
PMT Sensor
Hardware
Calibration
Low-level
hardware
calibration
On PMT/
preamp
changes or
if slope is
outside of
1.0±0.3
Yes 7.9
Pump Rebuild head when RCEL
pressure
exceeds 10
in-Hg-A (at
sea level)
Yes 9.3.4
NO
2
converter Replace
converter Every 3
years or if
conversion
efficiency
drops below
96%
Yes (if
CE factor
is used)
9.3.8
Items shown in bold face are required to maintain full warranty, all other items are strongly recommended.
146 M9110EH Rev 0