Troubleshooting - Oerlikon MINICITO 1700 Instrucciones De Seguridad, Empleo Y Mantenimiento

GB
4.2 CLEANING AND REPLACING THE COATING
guide cable
1. SHUT DOWN
the unit
2. Follow the
instructions in
the diagram
below
4.3

TROUBLESHOOTING

TYPE OF FAILURE
Does not operate
Irregular uncoiling of wire
Low welding power
Welds porous or spongy
The gas emerges continuously
The trigger on the torch is unserviceable
MAINTENANCE AND TROUBLESHOOTING
Before removing
the coating, vapo
rise the low-vis-
cosity oil lubri-
cate the sealing
ring
PROBABLE CAUSE
Defective power supply cable (one or moreshut-off phases)
Fuse blown
Insufficient pressure from rollers
Casing guide wire damaged
Wire striated, not suited to welding or excessively worn
Coil brake too tightly applied
Wire is rusted, of poor quality or badly coiled with tangled tips
Earth cable not connected
Wire disconnected or badly connected to the switches
Switches defective
Defective rectifier
Absence of gas
Draughts in the welding area
Orifices on diffuser obstructed
Gas escape due to a pipe break
Solenoid valve jammed
Reducing valve defective
Poor quality of gas or wire
Solenoid valve worn or contaminated
Trigger on torch defective, disconnected or with broken electri-
cal wiring
Fuse burned out
Mains isolator defective
Defective electronic circuit
Try to increase the clamping pressure of the rollers
Release the brake by slightly loosening the setting screw
Check condition of cable and ensure that clamp is properly attached to compo-
nent, at a point free of rust, grease or paint
Inspect, re-tighten or replace if necessary
Check status of contacts and operation of switches
Check presence of gas and pressure in bottle
Use a protective screen. If necessary, increase the gas flow.
Clean orifices on diffuser with compressed air
Check operation of solenoid valve and its electrical connection
Check the operation of the reducing valve by disconnecting the pipe linking it to
The gas must be perfectly dry. Change the bottle or use a different type of wire
Lift up the coil, clean the orifices and the blanking cap
Disconnect the torch from its connector and short circuit the controls. If the
station is in working condition, check the wires and the trigger
Replace with another fuse with the same rating
Clean with compressed air, check that wires are tightened on the switch and
(GB) 8
Before attaching the new
coating, apply grease to
the rubber part.
SOLUTION
Inspect and repair
Replace
Replace
Invert or replace wire
Fix by removing defective turns.
If the problem persists, replace coil
Check that there are no signs of burns.
If necessary, replace the rectifier
Inspect and replace the pipe
the station
replace if necessary
Replace the circuit
GB