Tweco 6000 CE Merlin - Manual (Page 49)

Manual 0-2601 5-1 CUSTOMER/OPERATOR 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 properly
trained personnel.
For major troubleshooting and parts replacement proce-
dures refer to the Master Power Supply Service Manual
0-2602.
5.02 General Maintenance
A. Routine Maintenance
NOTE
Refer to Appendix 12 for a recommended mainte-
nance schedule for water cooled plasma cutting
systems.
Routine maintenance for the Power Supply should in-
clude an occasional thorough cleaning and inspection. The
frequency depends on the usage and the operating envi-
ronment.
WARNING
Disconnect primary power at the source before as-
sembling or disassembling power supply, torch
parts, or torch and leads assemblies.
Remove both Side Panels of the Power Supply and blow
out any accumulated dirt and dust with compressed air.
The unit should also be wiped clean. If necessary, sol-
vents that are recommended for cleaning electrical appa-
ratus may be used.
While the side panels are off, inspect the wiring in the
unit. Look for any frayed wires or loose connections that
should be corrected.
B. Coolant Filter Assembly (Rear Panel)
The rear panel filter screen should be cleaned periodi-
cally. Remove the filter screen by unscrewing the filter
holder from the Coolant Filter Assembly. Clean the filter
screen by rinsing with hot soapy water. Remove soap
residue by rinsing with clean hot water. Be sure that all
the soap has been removed and the screen is dry of water
before re-installing in the Coolant Filter Assembly.
Coolant Filter Assembly
Filter Screen
Filter Holder
A-01510
Figure 5-1 Coolant Filter Assembly (Rear Panel)
C. In-Line Filter Assembly
The in-line filter screen should be cleaned periodically.
To gain access to the In-Line Filter Assembly remove the
Left Side Panel (viewed from the front of unit) of the
Power Supply. Remove the filter screen by unscrewing
the filter holder from the In-Line Filter Assembly. Clean
the filter screen by rinsing with hot soapy water. Remove
soap residue by rinsing with clean hot water. Be sure
that all the soap has been removed and the screen is dry
of water before re-installing in the In-Line Filter Assem-
bly.
D. Coolant Level and Conductivity
1. Coolant Level
The coolant level should be checked every day at
the rear panel coolant gauge. If the coolant in the
reservoir is more than 2 inches (50mm) from the
top of the reservoir then add Torch Coolant.
2. Coolant Conductivity
The coolant conductivity LED on the front panel
must be ON for normal operation. If the LED is
OFF then drain the old coolant from the Power