H. Maintaining and Troubleshooting the AQSync
Model AQSync Air Quality Monitoring Station Manual Rev. A-1
44
can be used as a diagnostic. With a properly functioning pump
and filter, the cell pressure will be about 10 mbar lower than the
ambient pressure (readout from the AQSync weather
transmitter).
To replace a filter, disconnect its inlet tubing from the inlet barb on the left wall of the
AQSync. Twist to open the filter housing and replace the 47mm filter. Reassemble the
filter housing and reconnect the inlet line to the barb fitting on the left wall of the AQSync.
H.1.4
Replacement of PM Pump Filter
It is recommended that the filter of the PM instrument pump be replaced quarterly. Twist
open the filter housing, which is easily accessible from the front of the AQSync. Use a
wide flathead screwdriver to loosen it, if necessary. Replace the round cylindrical filter
and reassemble.
H.1.5
Replacement of the CO/CO
2
Inlet Filter
The green inlet filter for the CO and CO
2
instruments
should be replaced quarterly. Remove it from the barb
fittings and replace with a new one. The picture shows
it as located before the optional VOCs module (see red
arrow). If no VOCs module is present, the filter will be
in a similar location, to the right of the CO module
(dotted red rectangle).
Optional VOCs
module
CO module
