Thermal Arc ULTIMA 150, Руководство по обслуживанию

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Manual 0-2503 9 SECTION 2: INTRODUCTION
SECTION 2:
INTRODUCTION
2.01 Scope of Manual
This manual provides service instructions for the Ther-
mal Arc
® ULTIMA-150 ® Plasma Welding Power Supply.
Information in this edition is particularly applicable to
the troubleshooting and repair of the equipment. For in-
formation on operating procedures, please refer to the
ULTIMA-150 Plasma Welding Power Supply Operating
Manual (0-2472).
NOTE
Service of this equipment is restricted to properly
trained service technicians familiar with this equip-
ment; unqualified personnel are strictly cautioned
against attempting repairs or adjustments not cov-
ered in this manual, at the risk of voiding the war-
ranty.
Read both this manual and the Operating Manual thor-
oughly. A complete understanding of the capabilities and
functions of the equipment will assure obtaining the per-
formance for which it was designed.
WARNING
There are extremely dangerous voltage and power
levels present inside this unit. Do not attempt to
diagnose or repair unless you have had training in
high power electronics measurement and trouble-
shooting.
2.02 General Service Philosophy
Several key points are essential to properly support the
application and operation of this equipment.
A. Application
Confirm that the equipment is capable of handling
the application desired. Specifications supplied and
described in Subsection 2.05 of this manual.
B. Modifications
No physical or electrical modifications other than se-
lection of standard options and accessories are to be
made to this equipment.
C. Customer/Operator Responsibilities
It is the customer/operator's responsibility to main-
tain the equipment and peripheral accessories pro-
vided by Thermal Dynamics in good operating order
in accordance with the procedures outlined in the
Operating Manual, and to protect the equipment from
accidental or malicious damage.
D. Repair Restrictions
The electronics consists of printed circuit board as-
semblies which must be carefully handled, and must
be replaced as units. No replacement of printed cir-
cuit solder-mounted components is allowed except as
noted in this manual.
If the Printed Circuit Board is to be returned, the re-
placed Printed Circuit Board Assemblies must be prop-
erly packaged in protective material and returned in-
tact per normal procedures.
2.03 Service Responsibilities
The Service Technician should be familiar with the equip-
ment and its capabilities and should be prepared to rec-
ommend arrangements of components which will provide
the most efficient layout, utilizing the equipment to its best
possible advantage.
Maintenance work should be accomplished in a timely
manner. If problems are encountered, or the equipment
does not function as specified, contact the Technical Ser-
vice Department in West Lebanon, NH for assistance.
2.04 ULTIMA-150 Power Supply
Description
The ULTIMA-150 Plasma Welding Power Supply is one
integrated unit providing power, pilot control inverter, and
coolant recirculator. The power supply has output ranges
from 0.5-15 amps and 5-150 amps. It is ideally suited for
all automated welding applications as well as all low cur-
rent gas tungsten arc welding (GTAW) applications. The
ULTIMA-150 Power Supply is suitable for use with all
designated Thermal Dynamics plasma welding torches.