Thermal Dynamics PAK 200 Operating Manual page 85

5. Poor Pilot Starting
a. High coolant conductivity (Refer to Power Supply
Manual)
b. Non-Genuine Thermal Dynamics Parts
7.04 Inspection and Replacement
Consumable Torch Parts
Disconnect primary power to the system before
disassembling the torch or torch leads.
DO NOT touch any internal torch parts while
the AC indicator light on the front panel of the
Power Supply is ON.
Remove the consumable torch parts per the following
procedure (See Note):
A multipurpose wrench is supplied for chang-
ing the tip, electrode and gas distributor in the
torch head.
Multi-Purpose Wrench
(Catalog Number 20-0001)
Used with 11/16" (17.5 mm)Tip
Used for 11/16" ( 17.5 mm)
Across Tip Flats
This Side
Towards Torch
Gas Distributor Notch
Used with 5/8" (15.9 mm)Tip
Multi-Purpose Wrench
1. Unscrew and remove the shield cup from the torch.
Slag built up on the shield cup that cannot be
removed may effect the performance of the
system.
Manual 0-5057
WARNING
NOTE
Gas Distributor Notch
Used for Electrodes
Used for 5/8" (15.9 mm)
Across Tip Flats
A-01639
NOTE
Torch Head
Water Tube Extension
(Gouging Only)
Torch Consumable Parts
2. Inspect the cup for damage. Wipe it clean or replace
if damaged.
3. Using the multipurpose wrench (5/8 inch slot) re-
move the tip. Check for excessive wear (indicated by
an elongated or oversized orifice). Replace the tip if
necessary.
The tip, electrode and gas distributor have
o-rings on each part. The o-rings should be
removed and a light coating of o-ring lubricant
(catalog number 8-4025) applied.
Good Tip
4. Tilt the torch head to remove the gas distributor. The
end of the multipurpose wrench can be used to help
remove the gas distributor. Check for excessive wear,
plugged gas holes, or discoloration. Replace if neces-
sary.
5. Using the multipurpose wrench (electrode area) remove
the electrode. Refer to Figure 5-4 and check the face
of the electrode for excessive wear.
New Electrode
Worn Electrode
7-3
PAK 200
Shield Cup
Tip
Electrode
Gas
Distributor
A-02188
NOTE
Worn Tip
A-02195
Tip Wear
A-02208
TORCH MAINTENANCE