E-2
TROUBLESHOOTING
E-2
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local
Lincoln Authorized Field Service Facility
for technical troubleshooting assistance before you proceed.
CAUTION
MOBIFLEX 400-MS(/HE) BASE UNIT
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Motor does not start. Machine does
not function.
No input power.
Check the input power.
Loose contacts.
Repair the contacts.
Control PC board defective.
Replace control PC board.
- 24 VAC magnetic valve defective.
Replace magnetic coil or diaphragm.
- Control PC board defective.
Replace control PC board.
- Filter cleaning mechanism defec-
tive or worn.
Replace the filter cleaning mecha-
nism.
- Pressure difference switch defec-
tive.
Replace pressure difference
switch.
- No compressed air or compressed
air pressure too low.
Check compressed air system
and/or compressed air connection.
Motor protection switch defective.
Replace the motor protection
switch.
Motor defective.
Repair or replace the motor.
Input power cord defective.
Repair or replace input power cord.
Missing jumper on input connection.
Wire in base swivel mount.
Motor makes a humming sound.
Machine does not function.
Motor capacitor defective/not con-
nected.
Repair or replace the motor capac-
itor.
Motor stops automatically.
Machine does not function.
Motor protection switch activated.
Let the machine cool down for
some time.
Check overload current setting
12A.
Control light extinguished during
cleaning process. No indication.
Control light defective.
Replace control light.
Control light keeps blinking
(“ALARM”). No automatic filter
cleaning.
Filter cleaning mechanism defective:
Control light blinks (“ALARM”).
Insufficient airflow.
Saturated LongLife filter.
Carry out off-line filter cleaning
cycle (
See Off-line Cleaning
).
Replace LongLife filter (
See
LongLife Filter Cartridge
).
