General Maintenance; Torch Maintenance; Connecting The Torch - Air Liquide CEMONT MAXISTAR 250T Instruction De Securite D'emploi Et D'entretien

FAULT
OVER PENETRATION
LACK OF FUSION
CHANNELS
8.0

GENERAL MAINTENANCE

DISCONNECT THE POWER SOURCE FROM THE MAINS BE-
FORE PERFORMING ANY MAINTENANCE WORK.
Every 5-6 months, remove accumulated dust from the inside of
the welding unit with a jet of dry compressed air (after removing
side panels).
BE EXTREMELY CAREFUL TO AVOID BENDING MOVE-
MENTS, WHICH COULD DAMAGE AND CHOKE THE TORCH.
NEVER MOVE THE POWER SOURCE BY PULLING THE
TORCH.
PERIODICALLY CHECK THE CONDITION OF THE TORCH,
WHICH IS THE PART MOST SUBJECT TO WEAR.
8.1

TORCH MAINTENANCE:

1. GAS NOZZLE (6): periodically apply welding spray and
clean nozzle interior of residue.
To replace the nozzle:
- Turn the nozzle clockwise to remove
- Fit the new gas nozzle.
2. WIRE GUIDE TUBE (7): check the wire passage of the tube
for wear. Replace as necessary.
To replace the nozzle:
- Turn the gas nozzle (6) clockwise to remove.
- Unscrew wire guide tube (7).
- Press the torch button; after a few seconds the wire will pro-
trude from the torch neck.
- Fit the new wire guide tube (7).
- Replace the gas nozzle (6).
- Trim excess wire.
GENERAL MAINTENANCE
APPEARANCE CAUSE AND REMEDY
- Wire speed too high.
- Incorrect torch inclination.
- Excessive distance.
- Distance too short.
- Rough out or grind the weld, then repeat.
- Welding speed too high.
(This fault is easily detected on sight by the welder, and should be corrected im-
mediately.)
8.2

CONNECTING THE TORCH

Prior to connecting the torch, make sure that the wire sheath (18)
is suited to the diameter of the wire used:
19
20
21
- BLUE Ø 1.5 for wire Ø 0,6- 0.8 mm.
- RED Ø 2.0 for wire Ø 1 - 1.2 mm.
(Wire sheath colour for steel wire).
6 EN
EN
18
22