Westweld NB-350MK, Manual Instruction

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b) Wear a shield filter glass that match with different welding current to protect eyes;
c) There should be ventilation in the welding place to prevent breathing in deleterious gas.
Weld current 100A below 100A
～
300A 300A above
Photo protection
degree
No.09 , No.10 No.11 , No.12 No.13 , No.14
Table 4 The selection principal and reference of filtering glass
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Checking after connection
All items specified in the “Installation” in item 5 of this manual are checked one by one and confirmed without errors.
Switch operation and gas flow adjustment
Step 1: Turn on the power switch of distribution box;
Step 2: Press “weld/check gas” knob to check gas status.
Step 3: After unscrewing the gas cylinder switch, slowly unscrew and adjust the flow adjustment knob switch of the gas flow
meter so that the indication value on the flow-meter is the welding required value.(Refer to table 6.)
Step 4: Press “weld/check gas” to “weld” status.
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Wire installation
The part name as the Fig.6 as follows:
Fig.6 Wire installation
Pre-operation preparation and inspection, confirmed items and methods, requirements:
Step 1: Confirm that the wire feeding groove diameter of the wire feeding wheel is the diameter of the welding wire.
Otherwise, the wire feeding wheel must be removed to select the wire feeding wheel diameter which is the same as the
diameter of the welding wire, and the groove is outside. Installed
Step 2: Pull down the handle of the wire feeder and lift the pressure arm;
Step 3: the wire spool is mounted on the wire spool, the wire spool of the wire
is adjusted to extend, and the manual nut is tightened. When the welding wire is out, the wire spool rotates