Inspection And Cleaning - ESAB ESP-150 Manual De Instrucciones

SECTION 5
Be sure that all primary power to the ma-
chine has been externally disconnected.
Open wall disconnect switch or circuit
breaker before attempting inspection or
work inside of the power supply.
Voltages in plasma cutting equipment
are high enough to cause serious injury
or possibly death. Be particularly careful
around equipment when the covers are
removed.
CAUTION
5.0 Maintenance
If this equipment does not operate properly, stop work immediately and in-
vestigate the cause of the malfunction. Maintenance work must be performed
by an experienced person, and electrical work by a trained electrician. Do not
permit untrained persons to inspect, clean, or repair this equipment. Use only
recommended replacement parts.
A. INSPECTION AND CLEANING
Frequent inspection and cleaning of the ESP-150 cutting machine is recom-
mended. Some suggestions for inspecting and cleaning are as follows:
1. Check work cable to workpiece connection.
2. Check safety earth ground at workpiece and at power source chassis.
3. Check heat shield on torch. It should be replaced if damaged.
4. Check the torch electrode and cutting tip for wear on a daily basis. Remove
spatter, replace if necessary.
5. Make sure cable and hoses are not damaged or kinked.
6. Make sure all plugs, fittings, and ground connection are tight.
CAUTION: Water occasionally accumulates in compressed air lines. Be
sure to direct the first blast of air away from the equipment to avoid
damage.
7. With all input power disconnected, and wearing proper eye and face
protection, blow out the inside of the cutting power supply using low-
pressure dry compressed air.
8. Occasionally bleed water from the filter beneath the air regulators.
The coolant must be handled as chemical waste.
B. FLOW TESTING
Improper flows can cause short life on the consumables, poor starting, bad
cuts, or overheated torches. The flows given below are "cold" flow (no arc). To
avoid fatal shock, follow the steps below to assure safe flow measurement.
1. Shut off input power at the main disconnect switch.
2. Disconnect CNC cable (J1).
3. Turn on the power at the main disconnect switch.
4. Place gas mode selector switch (OSS) in START/SHIELD position.
5. Place power ON-OFF switch (ROS) to ON.
6. Check flow measurements with flow measuring kit.
7. Place mode selector switch (OSS) in CUT position and check CUT flow
with flow measuring kit.
8. Place ROS switch to OFF.
9. Turn off power at main disconnect switch.
10. Reconnect CNC cable (J1).
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MAINTENANCE