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Miller®
OWNER'S MANUAL
Read and understand the entire contents of both this
IMPORTANT:
manual and the power source manual used with this unit, with special
emphasis on the safety material throughout both manuals, before in-
stalling, operating, or maintaining this equipment. This unit and these
instructions are for use only by persons trained and experienced in the
safe operation of welding equipment. Do not allow untrained persons to
install, operate, or maintain this unit. Contact your distributor if you do
not fully understand these instructions.
PNINTED IN U.S.A.
With
S1~vIiI ~c.. .IJ
in
~is:~t
-
——
-——-—
I I
V n-I~r
MODEL.
RHC-TP
Miller Electric Mfg. Co.
~'
~
P0. Box 1079
A~pIeton. WI 54912 USA
~e~• 414-734.9821
9

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Summary of Contents for Miller RHC-TP

  • Page 1 MODEL. RHC-TP OWNER’S MANUAL Read and understand the entire contents of both this Miller Electric Mfg. Co. IMPORTANT: manual and the power source manual used with this unit, with special ~‘ emphasis on the safety material throughout both manuals, before in- P0.
  • Page 2: Limited Warranty

    LIMITED WARRANTY EFFECTIVE: FEBRUARY 16. 1988 This warranty supersedes all previous MILLER warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY Subject to the terms and condi- In the case of Miller’s breach of warranty or any other duty co.,...
  • Page 3: General Information And Safety

    SECTION 1 INTRODUCTION 5-3/4 In. I1U mm) 7-3/4 (137 mm) TB.¶ IS 992 Figure 1 1. Specifications WARNING include installation, operation, statements 1. GENERAL INFORMATION AND SAFETY and maintenance procedures or practices which carefully followed could result in serious personal injury A.
  • Page 4: Installation

    To make con- operation as a pulsed GTAW system using external high-frequency unit. nections, align keyway, insert plug fully into receptacle, and rotate threaded collar fully clockwise. ARC PAK-350 DDo~ RHC-TP Adaptar Cord — 14P-250 InterconnectIng Cord To 11SVAC/23OVAC ©...
  • Page 5: Output/ Contactor

    IMPORTANT: Although the term CONTACTOR is 1. CONTACTOR SWITCH (Figure 3-1) used on the nameplate and throughout this manual, the output is not switched on or off by a physical output ELECTRIC SHOCK can kill. WARNING: contactor; rather the output is controlled by solid-state •...
  • Page 6: Sequence Of Operation

    2. PUSLE CONTROLS (FIgures 3-1 And 3-2) Rotating this control clockwise increases pulse frequen- cy. The scale surrounding the PULSES PER SECOND Pulsing refers to the alternate raising and lowering of control is calibrated in pulses per second from 0.5 to 25 the weld output at a periodic rate.
  • Page 7: Maintenance And Troubleshooting

    7. Turn on the welding power source. 4 -1. PUSLED GAS TUNGSTEN ARC WELDING (GTAW) 8. Turn on and adjust the high frequency, 1. Install and prepare welding power source accor- plicable. ding to its Owners Manual and Section 2 of this manual.
  • Page 8 Z ON TIME PEAK PLG3 ~AAA PC I A-N ON RC5O AA-AD ON RC5I OUTPUT/CONTACTOR BACKGROUND PULSES/SECOND CIrcuIt Dlagtem No. A-117 458 Figure 5 1. CIrcuit Diagram o~-sau PageS...
  • Page 9 March 1988 FORM: OM-888 EffectIve With Style No. JJ-29 PARTS LIST...
  • Page 10 Item Die. Part Mkgs. Description Quantity Complete Assembly Figure A CASE SECTION, front/end 117 078 117 327 CASE 019 663 MOUNT, 15/16ODx3/8 010 610 CONNECTOR, clamp-cable 1/2 inch S1,2 011 609 SWITCH, toggle SPDT 15 amp 125 volts NAMEPLATE (order by model number) 117 388 POTENTIOMETER, carbon 1 turn 2 watt 500K ohm 073 562...
  • Page 11 Dia. Part Mkgs. Description Figure B 117 729 Circuit Card, Pulser 096 275 IC, linear324 009 159 IC, linear 358 097 4.88 CAPACITOR, ceramic 0.15 uf 50 volts 084 132 CAPACITOR, ceramic 0.22 uf 50 volts dc C3,4 035 835 CAPACITOR, electrolyte 4.7 uf 35 volts CS ,6 072 130...

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