Operating instructions - EWM Hightec Welding GmbH

Maintenance and testing
General
7 Maintenance and testing
NOTE
The maintenance, cleaning and testing work described below must be conducted
correctly and on an annual basis in order qualify for claims under the EWM warranty.
7.1 General
When used in the specified environmental conditions and under normal operating conditions, this
machine is largely maintenance-free and requires a minimum of care.
There are some points, which should be observed, to guarantee fault-free operation of your welding
machine. Among these are regular cleaning and checking as described below, depending on the pollution
level of the environment and the length of time the unit is in use.
7.2 Cleaning
NOTE
The welding machine may only be cleaned, tested and repairied by competent, capable
personsl.
A capable person is one who, because of his training, knowledge and experience, is able
to recognise the dangers that can occur while testing welding power sources as well as
possible subsequent damage and who is able to implement the required safety
procedures.
In the event of failure to comply with any one of the following tests, the machine must not
be operated again until it has been repaired and a new test has been carried out!
DANGER
Risk of injury from electric shock!
Cleaning machines that are not disconnected from the mains can lead to serious injuries!
• Disconnect the machine completely from the mains.
• Remove the mains plug!
• Wait for 2 minutes until the capacitors have discharged.
The individual components should be handled as follows:
Power source: Depending on the amount of dust, blow out using oil- and moisture-free compressed air.
Electronics: Do not blast electronic components or circuit boards with compressed air but clean them
with a vacuum cleaner instead.
Coolant: Check for impurities and replace if necessary.
NOTE
Mixing coolants with other liquids or the use of other coolants voids our manufacturer's
guarantee.
66 Item No.: 099-000097-EWM01