Tweco PakMaster 50XL Plus - Manual (Page 31)

Manual 0-2744 25 SECTION 5: SERVICE
SECTION 5:
CUSTOMER/OPERATOR
SERVICE
5.01 Introduction
This section describes basic maintenance procedures per-
formable by operating personnel. No other adjustments
or repairs are to be attempted by other than Thermal
Dynamics trained personnel.
For major troubleshooting and parts replacement pro-
cedures refer to PAK Master 50XL PLUS Power Supply
Service Manual 0-2745.
5.02 General Maintenance
WARNING
Disconnect primary power to the system before dis-
assembling the torch, leads, or power supply.
To clean the unit, open the enclosure (refer to Section 5.05-
A, Opening Enclosure) and use a vacuum cleaner to re-
move any accumulated dirt and dust. The unit should
also be wiped clean. If necessary, solvents that are rec-
ommended for cleaning electrical apparatus may be used.
This schedule applies to all types of non-liquid cooled
plasma cutting systems. Some systems will not have all
the parts listed and those checks need not be performed.
NOTE
The actual frequency of maintenance may need to be ad-
justed according to the operating environment.
A. Maintenance Schedule
Daily Operational Checks or Every Six Cutting
Hours:
1. Check torch consumable parts, replace if damaged
or worn.
2. Inspect torch for any cracks or exposed wires, re-
place if necessary.
3. Check plasma and secondary supply and pressure/
flow.
4. Purge plasma gas line to remove any moisture
build-up.
5. Inspect input power cable for damage or exposed
wires, replace if necessary.
Weekly or Every 30 Cutting Hours:
1. Check fan for proper operation and adequate air
flow.
2. Vacuum dust and dirt out of the entire machine.
CAUTION
Do not blow air into the power supply during clean-
ing. Blowing air into the unit can cause metal par-
ticles to interfere with sensitive electrical compo-
nents and cause damage to the unit.
Six Months or Every 720 Cutting Hours:
1. Check the in-line air filter(s), clean or replace as
required (see subsection B below)
2. Check cables and hoses for leaks or cracks, replace
if necessary.
3. Check all contactor points for severe arcing or pits,
replace if necessary.
B. Optional Dry Air Filter Element
Replacement
NOTE
The XL PLUS Power Supply shuts down automati-
cally when the Filter Element becomes completely
saturated. The Filter Element can be removed from
its housing, dried out, and reused. Allow 24 hours
for Element to dry.
1. Remove power from power supply.
2. Shut off air supply and bleed down system before
disassembly to change Filter Element.