Hypertherm Powermax30 XP Service Manual - Manual (Page 146)

146 Powermax30 XP Service Manual 808150 Revision 1
6 – Power Supply Component Replacement
Replacing the air inlet fittings
 Each of these kits contains two fittings that are not used in the Powermax30 XP: a brass
coupler (015550) and a brass pipe (015618).
1. Complete the following procedures:
a. Set the power switch to OFF (O), disconnect the power cord from the power source, and disconnect the gas
supply.
b. See Remove the power supply cover on page 88.
2. CSA models: Are you replacing the quick-connect air fitting? (See Figure 78 on page 147.)
 If yes, continue with the next step.
 If no, remove the quick-connect air fitting from the brass hex adapter. Use a 5/8 inch wrench for the
hex adapter and a 9/16 inch wrench for the air fitting. Set the fitting aside.
CE/CCC models: Are you replacing the air fitting adapter? (See Figure 78 on page 147.)
 If yes, continue with the next step.
 If no, remove the air fitting adapter from the brass hex adapter. Use a 5/8 inch wrench for the hex
adapter and a 19 mm wrench for the air fitting adapter. Set the air fitting adapter aside.
3. Grip the air filter/regulator with your right hand to hold it steady. With your left hand, remove the brass hex adapter
from the air filter/regulator using a 5/8 inch wrench.
4. Apply a small drop of thread sealant to the middle threads of the new brass hex adapter. Do not apply thread sealant
to the threads at the end of the fitting that will be inserted into the air filter/regulator assembly.
 If applied too heavily, excess amounts of thread sealant can contaminate the gas line.
5. Screw the brass hex adapter into the air filter/regulator. Use a 5/8 inch wrench to tighten.
6. CSA models: Apply a small drop of thread sealant to the middle threads of the quick-connect air fitting. Screw the
fitting into the brass hex adapter. Use a 9/16 inch wrench to tighten.
CE models: Apply a small drop of thread sealant to the middle threads on the smaller end (1/4 NPT) of the air fitting
adapter. Screw the air fitting adapter into the brass hex adapter. Use a 19 mm wrench to tighten.
Kit number Description
428171 Kit: Air inlet fittings, CSA
428172 Kit: Air inlet fittings, CE/CCC
CAUTION!
Never use PTFE tape on any joint preparation. Use only a liquid or paste thread sealant on male
threads.