Tweco 400 XT Ultra-Cut Plasma Cutting System With Automated Gas Control - Manual (Page 101)

ULTRA-CUT 400 XT
Manual 0-5306 MAINTENANCE 5-1
SECTION 5: MAINTENANCE
5.01 General Maintenance
Perform the following checks periodically to ensure proper system performance.
Power Supply Maintenance Schedule
Daily
Check coolant level; add coolant as needed.
Check gas hose connections and pressures.
UC-AC Maintenance schedule
Monthly
Check cooling fan and radiator; clean as needed.
Check gas hoses for cracks, leaks, or abrasion.
Replace as needed.
Check all electrical connections
for cracks or abrasion. Replace as needed.
Six Months
Clean or replace external coolant filter.
Clean coolant tank.
Vacuum out any dust buildup inside power supply.
5.02 External Coolant Filter Cleaning Procedure
Periodic cleaning of the coolant filter ensures maximum coolant flow efficiency. Poor coolant flow causes inefficient torch parts
cooling with consequent faster consumable wear.
Clean the coolant filter as follows:
1. Disconnect system from main input power.
2. Unscrew and remove the filter canister by hand. Large canister located at the back of the power supply. Be sure to keep
the O-ring.
3. Inspect and replace filter as needed. Re-install the canister, tightening it by hand. Be sure the O-ring is in place.
4. Turn the system on and check for leaks.
5.03 Coolant Replacement Procedure
Replace coolant as follows:
1. Disconnect the system from main input power.
2. Remove the two right side panels.
3. Locate the coupling in the coolant line that comes from the bottom of the coolant tank, #1 in the following illustration.
Disconnect the coolant line at this fitting and drain the coolant into a disposable container of sufficient size. Remember
you will be draining more than the contents of the coolant reservoir.
4. Once coolant is draining, disconnect the gray hose coupling #2 in the illustration below. Allow excess coolant to drain,
then apply a maximum of 5psi to clear the lines.