Checker board Control Panel
25
Problem
Probable Cause
Remedy
Blower rotation fault light
on display panel ON
Motor rotation fault
Proper rotation is clockwise when looking down on
the top of the motor. Incorrect rotation, three phase
power supply: Turn electrical power OFF at source
and switch any two leads on the output-side of the
fan-motor starter. Correct rotation: Interchange leads
1 and 2 of the twisted pair that connects the current
sensor board to the Checker board. Change one end
only.
Compressed Air fault light
on display panel ON
Low compressed air
pressure in the
manifold
Increase compressed air supply pressure.
No connection from
the compressed air
manifold to the sensor
Install a pipe or tube providing compressed air to the
pressure sensor fitting on the enclosure.
Leak in the sensor line
or the tubing has come
loose from the fittings
Check for and repair any loose fittings or damaged
tubing inside the enclosure.
Supply line to the
manifold too small
Increase the size of the compressed air supply line to
the collector manifold.
Isolation valve at
manifold inlet closed
Open.
Regulator not adjusted
properly
Set regulator at 90 to 100 psi.
Compressed air filter
plugged
Clean or replace the filter in the compressed air
supply line.
No display for the Airflow
Bar
d
raph
Calibration procedure
not competed.
See Calibration on Page 20.
Current sensors not
installed or not wired.
See Electrical Installation on Page 12 and Signal
Terminal Wiring on Page 17.
