Unitor arc and gas welding equipment
Shipboard welding and cutting equipment
Unitor welding package for on-board repairs: the UWI-350MP multi-process rectifier (coated electrodes, TIG, air-carbon-arc gouging, oxy-arc cutting, wire welding with UWF-MP feeder, plasma cutting) and a gas central installation with one acetylene and two oxygen cylinders feeding outlet stations through flashback-protected regulators. The file has material specification, parts lists, drawings, data sheets, maintenance and operating instructions and type approvals.
Maintenance procedures
Starting gas welding/cutting
- Connect torch handle, blowpipe and hoses (2 × ¼", 10 m) to the outlet station. p. 78
- Slowly open cylinder valves, T-valves and closing valves for acetylene and oxygen. p. 78
- Set line pressures at the regulators (AC a little over 0.8 bar, O2 a little over 8 bar) and lock the knobs; leak-test every joint with spray. p. 78
- Open the outlet station valves; set torch oxygen then acetylene working pressure with the outlet regulators. p. 78
- Crack the torch oxygen valve, point the nozzle away from flammables, light and adjust the flame. p. 78
Stopping
- Close the torch acetylene valve first, then the oxygen valve; after work close the outlet station and cylinder valves. p. 78
Technical specifications
| Welding rectifier | UWI-350MP, 350 A, 380–440 V 3-phase 16 A, 50–60 Hz | p. 3 |
|---|---|---|
| Welding cable | 50 mm², DIX K-70 connectors, 25 m | p. 3 |
| Line pressure settings | acetylene a little over 0.8 bar, oxygen a little over 8.0 bar | p. 78 |
| Torch working pressure | welding: O2 0.3 bar, AC 0.3 bar; cutting: O2 1.7 bar, AC 0.2 bar | p. 78 |
Source: manufacturer's manual “EM-34 ARC AND GAS WELDING EQUIPMENT”, 83 pages. Page numbers refer to the original. Check against the manual on board before work.