L-Sealer Maintenance Keep working area round machine clear. Clean any melted polythene from seal wires and bars. General Maintenance requires checking the tension of the sealing wires. All sealing wires are easily changeable with a spanner. Side Bar. Loosen clamping nut on expander unit at back of sealing bar. Twist new sealing wire clockwise around stud and clamp with nut. Pull wire to front end of bar. Pull wire tight until expander spring is fully compressed. Twist wire clockwise around the stud and clamp with nut. Front Bar. Loosen nut on clamping plate which is fixed to the side sealing bar. Push sealing wire behind plate and clamp with nut. Pull wire to other end of bar and twist clockwise around stud on fully compressed expander bracket. Clamp with nut. Sealing wires should be changed when they have stretched to an extent where there is no tension in expander brackets when wires are in a cold state. Only genuine sealing wire should be fitted to the packaging machine. Incorrect wire may cause damage to machine transformer. Skyrobe Maintenance:- General Maintenance requires checking the tension of the sealing wires. All sealing wires are easily changeable with a spanner. Loosen M5/2BA nut on expander end of sealing bar and remove old seal wire. Cut new piece of sealing wire approximately 390mm long. Bend over end of seal wire 20mm and slide behind fixed bracket at the top end of sealing bar. Stretch wire down seal bar to bottom end - compress expander unit fully and wrap wire once around stud. Tighten nut. Daily:- Keep working area round machine clear. Clean any melted polythene from seal wires and bars. Weekly:- Check tension and condition of seal wires. Replace if required. Monthly:- Lightly grease all moving parts. Check tension of all nuts and bolts. Check condition of sealing rubbers.