Prest-O-Lite 380, Инструкция по эксплуатации

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SeCTION 5 TROUBleShOOTING
The cause of control malfunctions can be found by
referring to the sequence of operations and electrical
schematic diagram and checking the various compo-
nents. A volt-ohmmeter will be necessary for some of
these checks.
Voltages in plasma cutting equipment are high enough
to cause serious injury or possibly death. Be particu-
larly careful around equipment when the covers are
removed.
NOTE
Before checking voltages in the circuit, disconnect the power
from the high frequency generator to avoid damaging your
voltmeter.
5.2 TROUBleShOOTING GUIDe
5.1 TROUBleShOOTING
eleCTRIC ShOCK CAN KIll! Be sure that all primary
power to the machine has been externally disconnected.
Open the line (wall) disconnect switch or circuit breaker
before attempting inspection or work inside of the power
source.
Check the problem against the symptoms in the following
troubleshooting guide. The remedy may be quite simple. If
the cause cannot be quickly located, shut off the input power,
open up the unit, and perform a simple visual inspection
of all the components and wiring. Check for secure termi-
nal connections, loose or burned wiring or components,
bulged or leaking capacitors, or any other sign of damage
or discoloration.
Depress torch switch. After 2 seconds, is high frequency present?
No
Repair/replace
high frequency
unit
Repair/replace
power source
Yes
A. Difficult Starting.
• Change electrode
• Change nozzle
• Check for good, clean connection of work lead to workpiece
• Check air pressure 65-70 psig (4.5 - 4.8 bar)
• Check torch power cable for continuity
Is the "Air" LED light on
Repair/replace
control PCB
Yes No