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WELCOM-250Y, Z
MAINTENANCE MANUAL
CHOWEL
- 4 -
READ FIRST
To use this welding controller in safety, the operator should follow industry
standards and safety senses whenever working on, or near the weld machine.
In some case, failure to follow the warning instruction can lead to control or
machine damage. In other cases failure to follow these instructions can lead to
injury, or death of personnel.
Some examples of safe practices are listed below. These examples are not to be
considered a comprehensive listing of safety practices.
Always use safety senses when working with any type of machinery.
DANGER
During electrical power is ON, this welding controller is charged with high
voltage electricity. Turn electrical power OFF before open the door.
In the case the door is opened as it is not turn OFF can lead to injury by an
electric shock, or death of personnel.
WARNING
In some case failure to follow these instructions as follows can lead to control
damage or injury of personnel.
1. Ensure that control / machine is connected to the correct voltage before turning
electrical power ON.
2. Whenever power is ON, stand clear of moving parts.
This practice should be used even if the machine is not actually in use.
3. Before turning electrical power OFF, ensure that personnel are standing clear of
moving parts that are pneumatic or hydraulic powered.
4. Whenever electrical power is turned OFF, install a "lock-out" device at the
main disconnect to prevent power from being accidentally turned ON.
Summary of Contents for WELCOM-250Y
Page 16: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 16 3 2 Layout diagram for WELCOM 250Z...
Page 17: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 17 3 3 Timer unit and I O display...
Page 18: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 18 3 4 Electrical connection for WELCOM 250Y...
Page 19: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 19 3 5 Electrical connection for WELCOM 250Z...
Page 20: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 20 3 6 Connection diagram for WELCOM 250Y timer unit...
Page 21: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 21 3 7 Connection diagram for WELCOM 250Z timer unit...
Page 23: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 23 3 9 Harness diagram for WELCOM 250Y...
Page 24: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 24 3 10 Harness diagram for WELCOM 250Z...
Page 30: ...WELCOM 250Y Z MAINTENANCE MANUAL CHOWEL 30 3 16 Circuit diagram for firing PCB...