Canatal M52 - Low Airflow Alarm; Filter Dirty Alarm

M52 Microprocessor User's Guide
M52UMCT Oct-03 46
Low Airflow Alarm
Low airflow alarm
Airflow differential
pressure switch
intervention
Open panles in air
compartment
Close all panels
in the air
handling
compartment
Broken belts
Replace
defective belts
Blocked air path
Clear
obstruction in air
path
No air flow ?
Overcurrent protective
device tripped
Check control
circuit
Fan
motor running ?
yes
yes
no
no
Defective fan motor
Check fan motor
Filter Dirty Alarm
Filter dirty alarm
Filter differential
pressure switch
intervention
Filter dirty
Clogged
air filters ?
Replace air
filters
yes
Wrong differential
pressure switch
calibration
Re-calibrate the
differential
pressure switch
Differential pressure
switch malfunction
Check bended
tubing and
differential
pressure switch
operation
no