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1. Confirm the quality of tungsten electrode is good. The discharge performance of tungsten
electrode in bad quality may not meet relevant requirement.
2. The tungsten electrode without sharp treatment is not easy to arc and may cause arc to be
unstable.
C. The current may be unstable during machine operation.
This condition may be related to following factors: 1. Change of network voltage. 2.
Interference by network or other electrical equipments.
Precaution or preventive measures
1. Environment
1) Welding operation must be preformed in a dry condition with air humidity of not greater than
90%.
2) Ambient temperature range between -10
3) Do not operate welder in sunshine or in the rain to prevent the ingress of water or rainwater.
4) Do not operate welder in the environment with dust or corrosive gas.
5) Do not perform gas protective welding in the environment with strong air flow.
2. Keys to Safety
This welder is equipped with protection circuits for over current and over heating. System will
shut down if network voltage, output current and inside temperature exceed setting value. Excessive
operation may damage welder as well (e.g. voltage is higher), therefore you must be in accordance
with following:
1) Good ventilation!
During the operation of WS-MX series welding machine, nature ventilation may not meet the
cooling requirements of welder due to the larger current. Therefore it is necessary to set a fan inside
to cool and ensure its stable operation.
In order to ensure good ventilation, welding operator must ensure air vent is not covered or
blocked and the distance between welder and surrounding objects should be not less than 0.3 meter.
Above items are important for the operation and service life of welder.
2) Do not overload!
Welding operator should observe the max. allowable load current (relative to load succession
rate) and maintain welding current not greater than max. allowable load current.
Over current may shorten service life of welder obviously or even burn it out.
V. Preparation and operating for welding
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to 40
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