Thermo Scientific 49i Instruction Manual page 161

Thermo Fisher Scientific
7. The approximate efficiency is given as follows:
% Efficiency
8. Repeat for Cell B with sample flowing in Cell A.
9. If the instrument passes the balance test of the "Solenoid Leak Test"
described previously and the measured efficiency is low, replace the
ozone scrubber.
If the balance test indicates a leaky valve, and if the efficiency test shows
a low efficiency in the same cell that was low in the balance test, replace
sample solenoid.
If the efficiency test shows a low efficiency in the opposite cell that was
low in the balance test, replace the reference solenoid.
6
(273 T) 10 760 FREQ2
ln
P KL 273 FREQ1
C
(273 T)(238.9) FREQ2
ln
P FREQ1
C
Model 49i Instruction Manual
Preventive Maintenance
Ozone Scrubber Test
100%
100%
5-11