Thermal Dynamics PAK Master 150XL, Руководство по обслуживанию

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Manual 0-2728 4-1 SERVICE TROUBLESHOOTING
SECTION 4:
SERVICE
TROUBLESHOOTING
4.01 Introduction
This Section provides service diagnostics for the Pak
Master 150XL CE Power Supply, allowing the Technician
to isolate any faulty subassemblies. Refer to Section 5,
Repairs & Replacement Procedures, for parts replacement
instructions.
Under no circumstances are field repairs to be attempted
on Printed Circuit Boards or other subassemblies of this
unit. Evidence of unauthorized repairs will void the fac-
tory warranty.
NOTE
The troubleshooting contained in this manual is
for the Power Supply only. Troubleshooting other
parts of the system (ie. accessories) is covered in
separate manuals for those products.
4.02 Periodic Inspection &
Procedures
NOTE
Refer to Appendix 13 for a recommended mainte-
nance schedule for water cooled plasma cutting sys-
tems.
This subsection describes inspection procedures which
should be performed at periodic intervals as required.
A. Physical Inspection
Check that all cable connections are secure.
B. Fan Motor and Pump Lubrication
The fan motor and pump in the power supply should
be oiled twice per year or once for each 100 hours of
operation. To oil the motor, remove one side panel
and add two or three drops of 20 SAE oil to the front
and rear oil holes on the motor.
NOTE
Some units may utilize a sealed motor design which
does not require lubrication.
C. Power Supply Cleaning
To clean the unit, open the enclosure and use a vacuum
cleaner to remove any accumulated dirt and dust. The
unit should also be wiped clean. If necessary, solvents
that are recommended for cleaning electrical apparatus
may be used.
WARNING
Do NOT blow air into the power supply during
cleaning; make sure to always blow air out of the
unit. Blowing air into the unit can cause metal
particles to interfere with sensitive electrical com-
ponents and cause damage to the unit.
While the side panels are off, inspect the wiring in the
unit. Look for any frayed wires or loose connections that
should be corrected.
D. Coolant Filter Assembly
The Coolant Filter Screen should be cleaned periodically.
To gain access to the Coolant Filter Assembly, remove the
right side panel when viewed from front of unit. Remove
the Filter Screen by unscrewing the filter holder from the
Coolant Filter Assembly. Clean the filter screen by rins-
ing with hot soapy water. Remove soap residue by rins-
ing with clean hot water. Be sure that all the soap has
been removed and the screen is dry of water before rein-
stalling in the Coolant Filter Assembly.
A-02152
Filter Holder
Filter
Figure 4-1 Coolant Filter Assembly