Lincoln Electric INVERTEC 170S Service Manual page 10

ROUTINE MAINTENANCE
1. Keep the welding area around the machine
clean and free of combustible materials. No
debris should be allowed to collect which
could obstruct air flow to the machine
2. Every 6 months the machine should be
cleaned with a low pressure and dry
airstream. Keeping the machine clean will
result in cooler operation and
reliability.
3. Examine the sheet metal case for dents or
breakage. Repair the case as required. Keep
the case in good condition to insure that high
voltage parts are protected and correct
spacing are maintained. All external sheet
metal screw must be in place to ensure case
strength and electrical ground continuity.
1. Wraparound
2. Main Frame
3. Inverter Board
4. Fan
5. Control Board
6. Input Cable
7. Output Dinse Connectors
13
14
12
11
7
10
higher
MAJOR COMPONENTS LOCATION
1
2
THERMAL PROTECTION
Thermal detection device protect the machine
from excessive
Excessive temperatures may be caused by a lack
of cooling air or operating the machine beyond
the duty cycle and output rating. If excessive
operating temperatures should occur, the yellow
LED will light and the detection device will prevent
output voltage or current.
These detection device are self-resetting
the machine cools sufficiently. If the thermostat
shutdown was caused by excessive output
duty cycle and the fan is operating normally, the
power switch
should occur within a 15 minute period. If the fan
is not turning
obstructed , then the power must be switched off
and the fan problem or air obstruction must be
corrected.
8. Power Transformer
9. Mains Switch
10. Output Filter
11. Thermostat Sensor
12. Input Filter
13. Hall Sensor
14. Output Inductor
9
5
4
Page9
operating temperatures.
may be left on and the reset
or the air intake louvers were
6
3
8
once
or