B&C Technologies DI-225 Industrial - Manual (Page 39)

F. Blower (impeller/fan) motor operates okay for a few minutes and than either
Repeatedly or occasionally trips the overload protector…
NOTE: WHEN THE OVERLOAD PROTECTOR TRIPS, THE
MICROPROCESSOR CONTROLLER (COMPUTER) L.E.D. DISPLAY WILL
READ, “door”.
1. Motor is overheating
a. Motor air vents clogged with lint
b. Low voltage to motor
c. Failed motor
d. Failed impeller/fan drive bearings
e. Sprocket and V-belts are too tight
2. Failed overload protector
G. Both drive motor and blower (impeller/fan) motor are not operating…microprocessor
controller (computer) L.E.D. motor indicator dots and the “MTR” Relay output and
forward “FWD” or reverse “REV” L.E.D. indicators are on…
1. Blown drive motor and blower motor fuses
2. Failed motors (both blower and drive)
H. Both drive motor and blower (impeller/fan) motor are not operating…microprocessor
controller (computer) L.E.D. motor indicator dots and the “door” L.E.D. indicator are
on but relay output L.E.D. indicators are off (microprocessor controller (computer)
L.E.D. display does not read “door”
1. Failed microprocessor controller (computer)
I. Both drive motor and blower (impeller /fan) motor run a few minutes then stop
microprocessor controller (computer) L.E.D. display continues to read time or percent
of extraction and all indicator dots are off…
1. Fault in main door switch circuit
a. One (1) of the main door switches is out of adjustment
b. Loose connection somewhere in the door switch circuit
2. Fault in lint drawer switch circuit
a. Lint drawer switch out of proper adjustment
b. Loose connection in the lint drawer switch circuit