Hypertherm HyDefinition Quick guide

HyDefinition
RHF Console
Setup Configuration
For Systems
with Short Torch Leads
(20'/6m or less)
Field Service Bulletin
803490 - Revision 0
®

© Copyright 1998 Hypertherm, Inc.
All Rights Reserved
Hypertherm, HyDefinition, HT and LongLife are trademarks of Hypertherm, Inc.
and may be registered in the United States and/or other countries
HyDefinition RHF Console
Setup Configuration
for
Systems with Short Torch Leads
(20'/6m or less)
Field Service Bulletin
IM-349
(P/N 803490)
Revision 0 December, 1998
HYPERTHERM, Inc.
P.O. Box 5010
Hanover, New Hampshire 03755-5010
Tel.: [phone]
Fax: [phone]
http://www.hypertherm.com
email:[email protected]

1
FIELD SERVICE BULLETIN
HyDefinition RHF Console Setup Configuration
HyDefinition RHF Console Setup Configuration
In this bulletin:
Introduction .......................................................................................... 2
Purpose ........................................................................................... 2
General............................................................................................ 2
Applicability...................................................................................... 2
Identifying Effected RHF Consoles.................................................. 3
RHF Console Modification ................................................................... 4
Power Supply Modification................................................................... 6

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HyDefinition RHF Console Setup Configuration
FIELD SERVICE BULLETIN
INTRODUCTION
Purpose
This field service bulletin provides instructions for configuring HyDefinition systems to
improve starting reliability, when using short torch leads (20 feet or less).
General
HyDefinition systems that use short torch leads and have an RHF console containing a three-
capacitor spark gap assembly may experience decreased starting reliability. This bulletin
includes instructions for modifying effected power supplies and RHF consoles to improve the
reliability of the starting cycle.
Applicability
This field service bulletin applies to HyDefinition systems (HD1070 and HD3070) that use
short torch leads (20 feet or less) and have an RHF console containing a three-capacitor
spark gap assembly.
If your HyDefinition system does not use short torch leads (20 feet or less)
disregard this bulletin.
WARNING
All work must be performed only by qualified personnel!

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FIELD SERVICE BULLETIN
HyDefinition RHF Console Setup Configuration
Identifying Effected RHF Consoles
To determine if your system is equipped with a RHF console containing a three-capacitor
spark gap assembly:
Turn off power to the power supply and wait 5 minutes before
opening the RHF console.
Open the RHF console and examine the capacitors secured to
the spark gap assembly.
Turn off the power, unplug the power cord and wait 5 minutes before opening RHF con-
sole. If the power supply is directly connected to a line disconnect switch, place switch
in the OFF position. In the U.S., use a "lock-out / tag-out" procedure until the service or
maintenance work is complete. In other countries, follow appropriate local or national
safety procedures.
WARNING
ELECTRIC SHOCK CAN KILL
Two capacitors.
No action required. Three capacitors.
Modification recommended.

4
HyDefinition RHF Console Setup Configuration
FIELD SERVICE BULLETIN
RHF CONSOLE MODIFICATION
Remove nut and separate the capacitor
assembly from the spark gap.
Remove the screw and lock washer
securing wire to the capacitor link plate.
Remove the two screws and lock
washers securing the link plate.
Remove the link plate.
Turn off the power, unplug the power cord and wait 5 minutes before opening RHF con-
sole. If the power supply is directly connected to a line disconnect switch, place switch
in the OFF position. In the U.S., use a "lock-out / tag-out" procedure until the service or
maintenance work is complete. In other countries, follow appropriate local or national
safety procedures.
WARNING
ELECTRIC SHOCK CAN KILL
Turn off power to the power supply and wait 5 minutes before opening RHF console.
Open the RHF console and locate the capacitors secured to the spark gap assembly.

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FIELD SERVICE BULLETIN
HyDefinition RHF Console Setup Configuration
Install the screw and lock washer to
secure wire to the capacitor.
Install the nut to secure the capacitor
assembly to the spark gap. Make sure
washer is installed as shown.
Washer
Close and secure the RHF console.

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HyDefinition RHF Console Setup Configuration
FIELD SERVICE BULLETIN
Locate relay CR4.
Remove the right side
panel of the power supply.
Turn off the power, unplug the power cord and wait 5 minutes before removing any power
supply cover. If the power supply is directly connected to a line disconnect switch, place
switch in the OFF position. In the U.S., use a "lock-out / tag-out" procedure until the
service or maintenance work is complete. In other countries, follow appropriate local or
national safety procedures.
WARNING
ELECTRIC SHOCK CAN KILL
POWER SUPPLY MODIFICATION
Turn off power to the power supply and wait 5 minutes before removing power supply panel.

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FIELD SERVICE BULLETIN
HyDefinition RHF Console Setup Configuration
Remove wire 66 from relay CR4.
Attach wire 66 along with wire 67
to the lower terminal of relay CR4.
Relay CR4.
Replace the right side pane to the
power supply and secure in place.

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HyDefinition RHF Console Setup Configuration
FIELD SERVICE BULLETIN
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