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OM-1572 Page 2

2-1.

Duty Cycle

CAUTION

EXCEEDING DUTY CYCLE RATINGS will damage power source and torch.

Do not exceed indicated duty cycles.

warn7.1* 2/92

Duty cycle is how long the torch and power source can operate within a ten minute period without causing overheating
or damage. This torch is rated at 60% duty cycle when operated at 10 amperes, allowing cutting 6 minutes out of 10. If
the cutting amperes decrease, the duty cycle increases.

SECTION 3 – INSTALLATION

WARNING

ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Turn Off power source, and disconnect input power before installing torch.

swarn3.1* 2/93

3-1.

Consumables And Parts Supplied With Torch

ST-800 225

The following consumables are
supplied with torch:

1

Shield Cup

2

Electrode

3

Tip

4

Wrench

Use supplied wrench to change tips
and electrodes (see Section 5-2).

Torch is shipped fully assembled and
ready to install onto power source.

1

2

3

4

Figure 3-1. Consumables And Parts Supplied With Torch

Summary of Contents for APT-1000

Page 1: ...APT 1000 Torch Processes Description Air Plasma Cutting and Gouging Air Cooled Plasma Arc Cutting PAC Torch OM 1572A August 1993 Visit our website at www MillerWelds com ...

Page 2: ...value established in 1929 This Owner s Manual is designed to help you get the most out of your Miller products Please take time to read the Safety precautions They will help you protect yourself against potential hazards on the worksite We ve made installation and operation quick and easy With Miller you can count on years of reliable service with proper maintenance And if for some reason the unit...

Page 3: ...electrical parts 2 Wear dry hole free insulating gloves and body protection 3 Insulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work or ground 4 Do not touch torch parts if in contact with the work or ground 5 Turn off power before checking cleaning or changing torch parts 6 Disconnect input power before installing or ser...

Page 4: ...ar muffs to prevent sparks from entering ears CYLINDERS can explode if damaged Gas cylinders contain gas under high pressure If damaged a cylinder can explode Since gas cylinders are normally part of metalworking processes be sure to treat them carefully 1 Protect compressed gas cylinders from excessive heat mechanical shocks slag open flame sparks and arcs 2 Install and secure cylinders in an upr...

Page 5: ...tegies to minimize or avoid potential risks To reduce magnetic fields in the workplace use the following procedures 1 Keep cables close together by twisting or taping them 2 Arrange cables to one side and away from the operator 3 Do not coil or drape cables around the body 4 Keep welding power source and cables as far away as practical 5 Connect work clamp to workpiece as close to the weld as poss...

Page 6: ......

Page 7: ...ower before installing or servicing WARNING READ SAFETY BLOCKS at start of Section 3 1 before proceeding WARNING 5 4 6 7 1 2 CAUTION MOVING PARTS can injure Keep away from moving parts Keep all panels and covers closed when operating 3 Turn Off switch when using high frequency Figure 1 1 Safety Information SECTION 2 SPECIFICATIONS Table 2 1 Cutting Torch Specification Description Model Description...

Page 8: ... If the cutting amperes decrease the duty cycle increases SECTION 3 INSTALLATION WARNING ELECTRIC SHOCK can kill Do not touch live electrical parts Turn Off power source and disconnect input power before installing torch swarn3 1 2 93 3 1 Consumables And Parts Supplied With Torch ST 800 225 The following consumables are supplied with torch 1 Shield Cup 2 Electrode 3 Tip 4 Wrench Use supplied wrenc...

Page 9: ...tor Lead 1 4 Shield Cup Detector Lead 2 5 Torch Switch Leads 3 and 4 Route cable and leads through front panel opening 6 Terminal Strip 1T 7 Connection Label Connect cable to air torch out put connector which is not visible in Figure 3 2 but is located behind terminal strip 1T Refer to label and connect leads as shown Install wrapper 8 Work Cable Supplied With Power Source 5 8 in Tools Needed 1 4 ...

Page 10: ...sulate yourself from work and ground Do not touch live electrical parts Keep all panels and covers securely in place FUMES AND GASES can be hazardous to your health Keep your head out of the fumes Ventilate area or use breathing device Read Material Safety Data Sheets MSDSs and manufacturer s instructions for material cut CUTTING can cause fire or explosion Do not cut near flammable material Provi...

Page 11: ...nspect shield cup tip and electrode before cutting or whenever cutting speed has been significantly reduced see Section 5 2 Do not operate torch without a tip or electrode in place Place torch tip on edge Press trigger After 2 seconds of preflow pilot arc starts Pilot arc stops after 2 After cutting arc starts slowly start moving torch across metal Adjust torch speed so sparks go through metal and...

Page 12: ...ng 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 Tip 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 Sourc...

Page 13: ...he tip and electrode at the same time Ref ST 800 225 Ref S 0093 Turn Off power source and discon nect input power 1 Shield Cup 2 Contact Surface 3 Detector Pins Unscrew shield cup and wipe con tact surfaces with a soft cloth Con tact surfaces must be clean so spring loaded detector pins de press when shield cup is installed Check shield cup for cracks and replace if necessary Check detector pins t...

Page 14: ... swarn8 1 2 93 Table 5 1 Cutting Trouble Trouble Remedy Section Sparks come out top of cut or cut is not clean Torch travel speed too fast reduce travel speed Figure 4 2 Check torch tip and electrode and replace if necessary 5 2 Metal being cut is too thick increase power source Thickness control setting Arc goes out while cutting Make sure torch tip is touching metal while cutting Figure 4 2 Be s...

Page 15: ...4 DETECTIVE PIN 2 3 125 032 ELECTRODE 1 4 125 031 TIP 1 5 125 033 SHIELD CUP 1 6 125 034 WRENCH 1 7 125 270 POWER CABLE ASSEMBLY 1 8 125 078 PILOT AND DETECTIVE LEAD 1 9 125 079 TORCH SWITCH LEAD 1 10 125 273 HOSE SHEATH 1 11 125 269 HEAT SHRINKABLE TUBE 1 12 125 268 SWITCH COVER 1 13 125 074 TORCH SWITCH 1 14 125 266 TORCH HANDLE 1 15 125 285 INSULATING TUBE 1 BE SURE TO PROVIDE MODEL AND SERIAL ...

Page 16: ...Notes ...

Page 17: ...Notes ...

Page 18: ...Notes ...

Page 19: ...tting Torches Remote Controls Accessory Kits Replacement Parts No labor Spoolmate 185 Spoolmate 250 Canvas Covers Miller s True Blue Limited Warranty shall not apply to 1 Consumable components such as contact tips cutting nozzles contactors brushes slip rings relays or parts that fail due to normal wear 2 Items furnished by Miller but manufactured by others such as engines or trade accessories The...

Page 20: ... complete and retain with your personal records Always provide Model Name and Serial Style Number Call 1 800 4 A Miller or see our website at www MillerWelds com to locate a DISTRIBUTOR or SERVICE AGENCY near you Welding Supplies and Consumables Options and Accessories Personal Safety Equipment Service and Repair Replacement Parts Training Schools Videos Books Technical Manuals Servicing Informati...

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