Lincoln Electric Tomahawk 1500, Руководство оператора, Страница: 34 / 64

D-1
MAINTENANCE
ELECTRIC SHOCK CAN KILL.
• Have an electrician install and service
this equipment.
• Turn the input power off at the fuse box
before working on equipment.
• Do not touch electrically hot parts.
DAILY PROCEDURES
POWER SUPPLY
1. Verify that the green status light is illuminated when primary
power is applied to the system.
2. Rotate the output current knob to the purge position and verify
that air is flowing through the torch. While air is flowing, adjust
the regulator to 80 psi for 25’ torches and 90 psi for 50’ torches.
Return the output current knob to the required output position.
3. Raise the mechanized torch 2 inches above the workpiece. Apply
a start signal through the 14-pin connector. The pilot arc should
be established in approximately 2 seconds. The arc should
extend approximately 1 inch from the nozzle.
TORCH ASSEMBLY
1. Check the output cover of the torch lead for nicks or cuts. If the
outer cover is damaged and the underlying wires are visible, the
torch lead must be replaced. Check to make sure nothing is
crushing the cable and blocking the flow of air through the torch.
Also, check for and remove any kinks in the cable to maximize
air flow to the torch.
2. Remove all consumables from the torch and verify that the
anode-cathode insulator (brown plastic) is in good condition and
has no signs or arcing.
3. Check all consumables and discard any damaged items.
4. Verify that the electrode seat is clean to ensure proper electrical
contact.
5. Reassemble the torch consumables making sure that all parts
are seated properly and that the retaining cap is hand tight.
MONTHLY PROCEDURES
POWER SUPPLY
1. Using clean, dry, compressed air, blow out all accumulated dust
inside the machine. Be sure to clean all printed circuit boards,
heatsinks, power switch, and fan. In excessively dirty
environments, blow out the machine on a weekly basis. Keeping
the machine clean will result in cooler operation and higher
reliability.
2. Verify that all torch lead and ground connections are secure and
free of corrosion.
3. Verify that the primary three phase AC connections are tight.
4. Verify that all printed circuit board connectors are installed
properly.
5. Examine the sheet meetal case for dents or other damage and
repair as required. Keep in case in good condition to insure that
high voltage parts are protected and correct spacings are
maintained. All external sheet metal screws must be in place to
insure case strength and electrical ground continuity,
TORCH ASSEMBLY
1. Verify that the torch lead connection at the power supply is tight
and that there are no leaks. Only tighten enough to provide a gas
tight seal. The connections are subject to damage if over-
tightened.
2. Inspect the torch leads for nicks or cuts and replace if necessary.
Work Ground
1. Verify that work ground lead is securely fastened to the cutting
table and that the connection point is free from corrosion. Use a
wire brush to clean the connection point if necessary.
Gas Supply
1. Check for signs of contamination in the gas supply lines.
2. Drain filter bowl as needed.
3. Listen for gas leaks in the suply lines and the internal plumbing
system. Tighten any leaking connections. Leaks can cause poor
cut quality as well as torch overheating.
4. Replace the filter element as necessary. If the pressure drop
across the filter is more than 10 psi, the element needs to be
replaced. To replace the element:
- Remove the bowl from the filter body
- Remove the element and holder from body
- Separate the element from its holder
- Discard the used element
- Place the new element on its holder and top with the plastic
and rubber rings
- Thread the element and holder onto the body
- Thread the bowl onto the body
WARNING
FLEXCUT™ 80
MAINTENANCE