Tweco Ultima 150 - Manual (Page 29)

Manual 0-2472 23 SECTION 5: GENERAL MAINTENANCE
5.02 General Maintenance
A. Power Supply Maintenance
The only routine maintenance required for the power sup-
ply is a thorough cleaning and inspection, with the fre-
quency depending on the usage and the operating envi-
ronment.
CAUTION
Do not blow air into the power supply or through
the radiator during cleaning. Blowing air into the
unit can cause metal particles to interfere with sen-
sitive electrical components and cause damage to
the unit.
1. To clean the unit, open the enclosure and use a
vacuum cleaner to remove any accumulated dirt
and dust.
2. The unit should also be wiped clean. If necessary,
solvents that are recommended for cleaning elec-
trical apparatus may be used.
CAUTION
When cleaning care must be taken not to move or
damage the electronic components.
SECTION 5:
GENERAL MAINTENANCE
5.01 Introduction
This section covers the following topics:
1. General Maintenance
2. Basic Troubleshooting
3. Basic Parts Replacement
General Maintenance includes procedures which can be
performed by the user. Only those procedures that require
limited disassembly or taking of measurements are de-
scribed here. No other adjustments or repairs are to be
attempted except by Thermal Dynamics trained person-
nel. Basic Troubleshooting describes some of the more
common problems users encounter. Basic Parts Replace-
ment describes replacing some of the more basic parts, for
example, filters and fuses.
NOTES
Under no circumstances are field repairs to be at-
tempted on Printed Circuit Board (PCB) or other
subassemblies of this unit. Evidence of unautho-
rized repairs may void the factory warranty.
If major complex assemblies are faulty, the unit must
be returned to an authorized service center for re-
pair.
WARNING
Disconnect primary power to the system before dis-
assembling the torch, leads, or power supply.