ESAB PowerCut 400, Instruction Manual

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© ESAB AB 2012
- 20 -
bp28e
6.1 Inspection and cleaning
The following points on the power source should be checked and/or cleaned
regularly.
1. Check the return cable connection to the work piece.
2. Check that the protective earth from the work piece is securely connected to the
power source chassis earth.
3. Check the torch heat shield. Replace it if it is damaged.
4. Check the electrode and the nozzle for wear daily. Remove any splash, replace
the electrode and nozzle as necessary. If the electrode has pitting which is more
than 3.2 mm deep at its centre, it must be replaced. If the electrode is used
beyond this recommended wear limit, damage to the torch and power source
may occur. Nozzle life is also greatly reduced when using the electrode below
the recommended limit.
5. Check that the cables or hoses are not damaged or bent.
6. Check that all plugs and connections and ground terminals are firmly connected.
7. Ensure that all incoming power supplies are disconnected. Use goggles and face
mask and blow clean the power source internally using dry compressed air at
low pressure .
7 TROUBLESHOOTING
WARNING
ELECTRIC SHOCKS CAN KILL! Ensure that the mains voltage supply to the power
source has been disconnected externally. Switch off the switch at the mains
socket before inspecting or working in the power source.
WARNING
Plasma cutting equipment uses extremely high voltages that can cause severe
injury or even death. Observe extreme caution when working with the covers
removed.
Try these recommended checks and inspections before sending for an authorized
service technician.
Type of fault Corrective action
Insufficient penetration
S
Current too low
S
Cutting speed too fast
S
Damaged cutting nozzle
S
Improper air pressure
S
Low air flow rate
Main arc extinguishes.
S
Cutting speed too slow
S
Worn electrode
GB