ESAB PCM-750i Manuale delle Istruzioni

Be sure this information reaches the operator.You can get extra copies through your supplier.INSTRUCTION MANUALPCM-750iPLASMA ARC CUTTING PACKAGESerie

SECTION 2 INSTALLATION102.1 GENERALProper installation can contribute materially to the satis-factory and trouble-free operation of the PCM-750i c

SECTION 2 INSTALLATION11Figure 2-1. PCM-750i Interconnection DiagramCUSTOMER PROVIDEDAIR SUPPLY(150 psig MAX;90 psig MIN)NO. 8 CU/AWG 3-CONDUC-TOR

SECTION 2 INSTALLATION12Figure 2-2. Ground and Work Cable ConnectionsDO NOT ATTACH WORKCABLE TO PIECE BEING CUTFREEWORK CABLEEARTH GROUNDGROUNDEDWO

SECTION 3 OPERATION13E. Fault Light. Will glow red under the followingconditions and operations will come to a completestop:1. When duty cycle

SECTION 3 OPERATION14NOTEWhen replacing the nozzle, always inspect the elec-trode for wear. If less than 11/16" of electrode shaft isremai

SECTION 3 OPERATION153.4 COMMON CUTTING PROBLEMSListed below are common cutting problems followed bythe probable cause of each. If problems ar

SECTION 4 MAINTENANCE164.1 GENERALIf this equipment does not operate properly, stop workimmediately and investigate the cause of the malfunc-tion.

SECTION 4 MAINTENANCE174.4 FLOW SWITCH (FIGURE 4-2)When excessive contamination is found in the air, theflow switch (FS-4 or FS-5) should be disas

SECTION 5 TROUBLESHOOTING18The cause of control malfunctions can be found byreferring to the sequence of operations and electricalschematic diagram (

SECTION 5 TROUBLESHOOTING19B. No AirIs air hose connected?Yes No ConnectIs air adjusted to 65 psig?Yes No AdjustDoes air come on with air ch

USER RESPONSIBILITYThis equipment will perform in conformity with the description thereof contained in this manual and accompanyinglabels and/or inser

SECTION 5 TROUBLESHOOTING20C. Air does not shut offIs air check switch OFF?Yes No Turn switch OFFDoes arc start when nozzle contacts work without dep

SECTION 5 TROUBLESHOOTING21D. Green "Power" light not energized.Is main 230 volt switch ON?Yes No Turn on main disconnectIs plug i

SECTION 5 TROUBLESHOOTING22E. Red "FAULT" light ON.Is the unit overheated?("Fault" lights turns offwhen Unit cools down.)Yes NoIs

SECTION 5 TROUBLESHOOTING23TORCH SWITCHOPEN CLOSEGAS SOLENOID VALVEPREFLOWFLOW SWITCH CLOSEFAULT OVERLOAD LIGHTHF CIRCUITINVERTERCU

SECTION 5 TROUBLESHOOTING2410 SEC PUSH RELEASE PUSH RELEASE TORCH SWITCH OPEN CLOSE GAS SOLENOID VALVEPOSTFLOW CLOSE OPEN

25Figure 5-1. PCM-750i (Series A) Schematic Diagram (460 V, 3-Phase Input)D-35511-A

26Figure 5-2. PCM-750i (Series A) Wiring Diagram (460 V, 3-Phase Input)D-35510-A

27Figure 5-3. PCM-750i (Series A) Schematic Diagram (230 V, 1-Phase Input)D-35507-A

28Figure 5-4. PCM-750i (Series A) Wiring Diagram (230 V, 1-Phase Input)D-35506-A

SECTION 6 REPLACEMENT PARTS29Replacement parts may be ordered from your ESABdistributor or from:ESAB Welding & Cutting ProductsAttn: Custome

3WARNING: These Safety Precautions are foryour protection. They summarize precaution-ary information from the references listed inAdditional Safety In

SECTION 6 REPLACEMENT PARTS3012A13,1415171813,428ITEMNO.QTYREQ.PARTNO.DESCRIPTIONCIRCUITSYMBOL12345678910111213141516171811111111111111111111339

SECTION 6 REPLACEMENT PARTS31VIEW A-A2,17134REF 5FIGURE 6-65616151479,810111213REF 12FIGURE 6-1Figure 6-2. PCM-750i (Series A) Power Source (Rig

SECTION 6 REPLACEMENT PARTS32VIEW A-A2,19134REF 5FIGURE 6-65616151479,810111213REF 12FIGURE 6-1Figure 6-3. PCM-750i (Series A) Power Source (Rig

SECTION 6 REPLACEMENT PARTS3313124,35678REF 4FIGURE 6-691114 (PCB2)17182114 (PCB3)16152019104,32012ITEMNO.QTYREQ.PARTNO.DESCRIPTIONCIRCUITSYMBOL

SECTION 6 REPLACEMENT PARTS341314124,35678REF 4FIGURE 6-691011121617Figure 6-5. PCM-750i (Series A) Power Source (Left Side View)P/N 33982 - 460

SECTION 6 REPLACEMENT PARTS351897112345610Figure 6-6. PCM-750i (Series A) Power Source (Rear View)ITEMNO.QTYREQ.PARTNO.DESCRIPTIONCIRCUITSYMBOL1

F-15-223-A 2/96 4M Printed in U.S.A.IF YOU DO NOT KNOW WHOM TO CALLTelephone: (800) ESAB-123Hours: 7:30 AM to 5:00 PM ESTESAB Welding & Cutting

4FUMES AND GASES -- Fumes andgases, can cause discomfort or harm,particularly in confined spaces. Donot breathe fumes and gases. Shield-ing gases can

5a. Éloigner suffisamment tous les matériaux combus-tibles du secteur où l’on exécute des soudures ou descoupes à l’arc, à moins de les recouvrir com

6pas sage d’un courant de sortie par des chaînesdelevage des câbles de grue ou divers cheminsélectriques.g. Empêchez l’apparition de toute humidité, n

SECTION 1 DESCRIPTION71.1 GENERALThe PCM-750i is a compact, completely self-containedplasma cutting system. As shipped, the system is fullyassem

SECTION 1 DESCRIPTION81.4 SPECIFICATIONSRefer to Tables 1-3, 1-4, and Figures 1-1 and 1-2 forPCM-750i technical specifications.Table 1-3. PCM-75

SECTION 1 DESCRIPTION9Table 1-4. PT-27 Torch Specifications 1" (25.4 mm) 3" (76 mm) 1"(25.4 mm) 7.3" (185 mm)75°Figure