FORM 100.10-NOM2
67
YORK INTERNATIONAL
Check for dirty filters. Filters may load much more rapidly if construction is
on going in the immediate area, if certain area vegetation releases
airborne substances or if insect swarms are present.
Check for wet filters or snow loading – See PRE-FILTERS ARE WET.
Check for damage to the filter racks, filter frames, filter headers or filter
tracks.
Check for missing filter clips or latches when required.
Be sure air pressure drop (APD) across the filters does not exceed design –
See Engineering Guide Form 100.10-EG2, “FILTER APD” page 41.
Verify external safety circuit is wired in at correct terminals and it has
continuity.
Verify control signal is wired in (or piped in if pneumatic) at correct termi-
nals and is of correct type.
Refer to Installation, Operation, Programming, Troubleshooting and
Technical support information packed inside AirMod.
FILTERS OUT OF FILTER RACK
AIR MODULATOR (AIRMOD)
WILL NOT OPERATE
5
