Tweco 51 with SL100SV CutMaster - Manual (Page 73)

Manual 0-4640 5-9 SERVICE
5
I. Torch cannot be activated; AC indicator flashing; Gas indicator ON; Temp indicator OFF; DC indica-
tor OFF
1. System is in protective interlock mode. (Torch switch in CNC Controller in ON position while turning on power supply
ON / OFF switch.)
a. Release torch switch.
2. System is in protective interlock mode. (Torch parts are missing or loose.)
a. Release torch switch, and set power supply ON / OFF switch to OFF (down). Open main disconnect switch. Check
torch parts. Replace parts as needed. Reinstall shield cup; hand - tighten it securely against the torch head. Do not
overtighten. Do not use tools. Close main disconnect switch. Set ON / OFF switch to ON (up) position.
J . Gas cycles on and off without torch switch being activated; AC indicator Flashing; Gas indicator ON; DC
indicator OFF
1. Torch tip or electrode missing
a. Shut off power supply. Remove shield cup, install missing part(s). Turn power supply ON / OFF switch to ON (up).
K. No cutting output; Torch pilots; Gas flows; Fan operates; AC , Gas , and DC indicator ON; TEMP
indicator OFF
1. Work cable not connected to work piece, or connection is poor
a. Make sure that work cable has a proper connection to a clean, dry area of the workpiece or the cutting table.
2. Faulty Torch
a. Return for repair or have qualified technician repair.
L. Torch cuts but not adequately
1. Incorrect setting of output current (A) control
a. Check and adjust to proper setting.
2. Torch consumables worn
a. Check torch consumables; replace as needed.
3. Work cable connection is poor
a. Make sure that work cable has a proper connection to a clean, dry area of the workpiece or cutting table.
4. Torch is being moved too fast across workpiece
a. Reduce cutting speed.
5. Excessive oil or moisture in torch
a. Put RUN / RAPID AUTO RESTART / SET switch in SET (down) position. Position the torch 1/8 inch (3 mm) from a
clean surface while purging and observe oil or moisture buildup (do not activate torch). If there are contaminants in the
gas, additional filtering may be needed.
6. Fluctuations in input power
a. Have electrician check input line voltage.