2019 11 D4OPTRS
TROUBLESHOOTER’S GUIDE CONTINUED
PROBLEM
Flue Plate fully open and
will not close (Continued)
Purge System will not pulse
CAUSE
Thin air due to high altitude
over 5000 feet
Blown fuse
Door closed prox input #2
not on
Air pressure not at correct
PSI.
Service switch not engaged
Purge switch input #4 is not
on
No air pressure
Air compressor malfunction
SOLUTION
If the Magnesense gauge is
reading below 1.8”, and the
head is set properly, block
off some of the tubes in the
precleaner.
Check DST circuit fuse at
sweeper console
Check DST VMM power
fuse at battery
Close door
Check prox switch
Check air pressure gauge
at sweeper control panel.
Pressure must be above 90
PSI.
If air tank pressure is above
90 PSI, pressure switch
input #7 should be on.
Check and replace switch.
Turn on service switch
Make sure the Purge switch
is in the “ON” position.
Check harness between
switch and module.
Check that shop air valve
has not been left open.
Check condition of air
compressor drive belt.
Replace if needed.
Check condition of air
compressor regulator for
low pressure.
— FOR SAFETY —
Stop all engines and set parking brake before servicing.
— READ YOUR MANUAL —
!
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