Model 306 Ozone Calibration Source Manual Rev. G-1
21
9.
MAINTENANCE/TROUBLESHOOTING
The Ozone Calibration Source
is designed to be nearly maintenance free. The only
components that require routine maintenance are the two particle filters and the two
scrubbers (the ozone/NOx scrubber and the ozone scrubber; see Figure 10-1), which
should be changed at least annually, or more often under heavy use of the instrument.
Other user-serviceable components include the lamp, air pump, and 3-way solenoid
valve, all of which are easily replaced should they fail. Parts are available at our
online store,
https://twobtech.com/parts-online.html
(see Section 11 for parts list).
If the instrument fails to operate correctly, common problems can be identified and
corrected using Table 8-1. If the problem cannot be easily corrected, please contact
Customer Service at 2B Tech via our web ticketing software at:
https://twobtech.com/tech-support.html
Alternatively, you can email us at
+1(303)273-0559. If we mutually determine that the instrument cannot be repaired
onsite, we will provide you with a Return Authorization number and a short form to be
filled out and returned to our Service Department along with the instrument.
The figures in Section 10
provide a “guided tour” of the instrument so that critical
components and connectors may be easily identified. Section 11 gives a parts list.
Table 9-1. Troubleshooting the Ozone Cal Source
for performance problems.
Problem/symptom
Likely cause
Corrective action
Instrument does not turn
on.
Power not connected
properly or circuit breaker
open.
Power cable not connected
to circuit board.
Check external power
connection for reverse
polarity or a short and wait
a few minutes for the
thermal circuit breaker to
reset.
Remove top cover and
disconnect and reconnect
power cable to circuit
board.
Instrument turns on then
powers off.
Burned out air pump.
Remove top cover and
unplug air pump. Turn
instrument on; if it remains
running, then the air pump
motor is burned out and
shorting. Replace air
pump.
Display is blank or
nonsense.
Bad connection of display
to circuit board.
Remove top cover and
reconnect display to circuit
board. Check solder
connections to display.
