Thermal Dynamics DRAG-GUN 38, Инструкция по эксплуатации

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Manual 0-2729 21 SECTION 5: SERVICE
Remove the consumable torch parts per the following pro-
cedure:
NOTE
The tip, gas distributor, and electrode are held in
place by the shield cup. Position the torch with the
shield cup facing upward to prevent these parts from
falling out when the cup is removed.
1. Unscrew and remove the shield cup from the torch.
NOTE
Slag built up on the shield cup that cannot be re-
moved may effect the performance of the system.
Torch Head Assembly
Standard
Shield Cup
Gas
Distributor Tip Electrode
A-00780
Figure 5-2 Consumable Parts
2. Inspect the cup for damage. Wipe it clean or replace if
damaged.
3. Remove the tip. Check for excessive wear (indicated by
an elongated or oversized orifice). Replace the tip if
necessary.
Good Tip
Worn Tip
A-00323
Figure 5-3 Tip Wear
4. Remove the gas distributor. Check for excessive wear,
plugged gas slots, or discoloration. Replace if neces-
sary.
5. Remove the electrode. Refer to Figure 5-4 and check the
face of the electrode for excessive wear. The face of the
electrode should not be recessed more than 0.10 inch
(2.5 mm). If it is worn beyond this point it must be
replaced.
New Electrode
Worn Electrode
A-01270
;
Figure 5-4 Electrode Wear
6. Install the electrode, gas distributor, tip and shield cup.
7. Hand tighten the shield cup until it is seated on the
torch head. If resistance is felt when installing the cup,
check the threads before proceeding.
CAUTION
Improper assembly or use of non-standard torch parts
can cause the torch head to short and may overheat
or damage the torch.
5.05 Troubleshooting Guides
There are two Troubleshooting Guides, Basic and Ad-
vanced, provided in this Instruction Manual. The Basic
Troubleshooting Guide uses symptom, cause, and remedy
for fault isolation. The Advanced Troubleshooting Guide
uses Flow Charts and test procedures for fault isolation.
Basic troubleshooting is limited to non-power checks and
external Power Supply faults. Advanced troubleshooting
requires fault isolation to the Power Supply or Torch, Power
Supply disassembly, voltage measurements and major
component replacement.
The guides are as follows:
Section 5.06 - Basic Troubleshooting Guide
Section 5.07 - Advanced Troubleshooting Guide
Depending on the level of repair to be done, refer to the
desired troubleshooting guide.
5.06 Basic Troubleshooting Guide
A. General
Basic troubleshooting of the DRAG-GUN 38 Plasma Cut-
ting System can be performed without special equipment
or knowledge, and without opening the enclosure.
This basic troubleshooting guide covers input power, gas
supply, and torch problems.