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Miller Electric APT-1000 SECTION 5 MAINTENANCE & TROUBLESHOOTING

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SECTION 5 – MAINTENANCE & TROUBLESHOOTING

ELECTRIC SHOCK can kill.

•Do not touch live electrical parts.

•Turn Off power source, and disconnect input power

before inspecting, maintaining, or servicing.

HOT PARTS can cause severe burns.

•Allow cooling period before maintaining or servicing.

Maintenance to be performed only by qualified persons.

WARNING

swarn8.1* 2/93

5-1. Routine Maintenance

Turn Off all power before maintaining.

Each Use

Check

Torch T ip,

Electrode,

And Shield

Cup

Check

Torch Tip

Shutdown

System

Every Week

Check

Air/Gas

Pressure

Tape

Torn

Outer

Covering

– –

Clean

And

Tighten

Torch

Connections

3-2

Torch Body

Air/Gas Hose Torch Cable

– –

Replace

Cracked

Parts

3 Months

Power

Source

Manual

See

Section

5-2

Power

Source

Manual ST-127 899-A

Figure 5-1. Maintenance Schedule

Contents

Main APT-1000 Torch From Miller to You PLASMA ARC CUTTING SAFETY PRECAUTIONS PLASMA ARC CUTTING can be hazardous. CUTTING can cause fire or explosion. ELECTRIC SHOCK can kill. ARC RAYS can burn eyes and skin. PRINCIPAL SAFETY STANDARDS EMF INFORMATION NOTE TABLE OF CONTENTS Page SECTION 1 SAFETY INFORMATION NOTE Figure 2-1. Overall Dimensions WARNING SECTION 3 INSTALLATION 3-1. Consumables And Parts Supplied With Torch 3-2. Installing Torch READ SAFETY BLOCK at start of Section 3 before proceeding. Figure 3-2. Installing Torch In Standard Power Source WARNING A. Installing Torch In Standard Power Source SECTION 4 OPERATING THE TORCH Figure 4-1. Safety Equipment HITTING TORCH ON A HARD SURFACE to remove spatter can damage torch. Figure 4-2. Sequence Of Plasma Arc Cutting (PAC) EXAMPLE Of Cutting Operation SECTION 5 MAINTENANCE & TROUBLESHOOTING ELECTRIC SHOCK can kill. Figure 5-1. Maintenance Schedule Every Week HOT PARTS can cause severe burns. 5-2. Checking Detector Pins And Checking/Replacing Shield Cup, Tip, And Electrode OVERTIGHTENING will strip threads. Figure 5-2. Checking Detector Pins And Checking/Replacing Shield Cup, Tip, And Electrode 5-3. Troubleshooting ELECTRIC SHOCK can kill. HOT PARTS can cause severe burns. Table 5-1. Cutting Trouble Trouble Remedy Section SECTION 6 PARTS LIST Page Page Page Warranty Questions? Call 1-800-4-A-MILLER for your local Miller distributor. Effective January 1, 2000 (Equipment with a serial number preface of LA or newer) Please complete and retain with your personal records. For Service Always provide Model Name and Serial/Style Number. Owners Record