ESAB PCM-875 - Page 31

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Figure 5-3. Wiring Diagram (Sheet 2 of 2), PCM-875, 208/230 V, 50/60 Hz, 1 or 3-Phase

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User Responsibility2
Table of Contents3
Safety Precautions4
Fumes and Gases5
Additional Safety Information5
Cylinder Handling5
Equipment Maintenance5
Précautions de Sécurité6
Description8
General8
Scope8
Packages Available8
Specifications9
PT-27 Torch Specifications10
PT-27 Dimensions10
PT-27/PCM 875 Cutting Performance10
Optional Accessories10
Equipment Required11
Location11
Inspection11
Installation11
Secondary (Output) Connections12
Recommended Sizes for Input Conductors and Line Fuses12
PCM-875 Interconnection Diagram13
Mechanized Cutting Installation with the Pt-20Am Torch15
Mechanical System Setup15
Mechanical Cutting Interface Diagram15
Connection Diagram - PCM-875/PT-20AM with Arc Starter16
Operation17
Pcm-875 Controls17
Cutting with the Pt-2717
Air Test Switch17
Electrode Wear Limit18
Common Cutting Problems19
Insufficient Penetration19
Uneven Arc19
Main Arc Extinguishers19
Inspection and Cleaning20
Pt-27 Torch Consumable Parts20
Assembly of PT-27 Torch Front End Parts20
Maintenance20
Flow Switch21
IGBT Handling & Replacement21
Screw Fastening Order21
Troubleshooting Guide22
Power Light (PL1) Does Not Come on22
No Air Flow22
Section 5 Troubleshooting22
Fault Light Activates When Torch Switch Is Closed23
Air Is on but Nothing Happens When Torch Switch Is Operated24
High Frequency and Pilot Arc Are on but Main Arc Does Not Transfer25
Poor Cutting Performance25
Air Does Not Shut off25
Main Arc Is Difficult to Start25
Reference Voltage Checks26
Control Board Assembly26
Troubleshooting26
Sequence of Operation27
Trigger Lock "Unlock" Position27
Trigger Lock Position28
Replacement Parts38
Ordering38
Section 6 Replacement Parts40

ESAB PCM-875 - Page 31

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