8
Operators Manual
Quality
•
Reliability
•
Performance
Quality
•
Reliability
•
Performance
Fig 2
Positive Wire
Fig 3
Negative Wire
To work clamp
To gun cable
5 Installation
Connection to Electrical Mains Power
Supply
The Weldmatic 150 is factory fitted with a
3 metre, 3 core 30/0.25 Heavy Duty PVC
mains power supply cable with moulded 3
pin, 15 Amp, Single Phase plug.
A 15 Amp plug and socket is recognisable by
a wide Earth pin. Power Supply authorities
require that equipment fitted with a 15 Amp
plug shall ONLY be connected to a 240 Volt,
15 Amp power point. DO NOT modify the
plug.
The minimum capacity of the mains wiring
and power outlet supplying a welder is
selected according to the effective primary
current of the equipment. The effective
primary current for the Weldmatic 150 is 12
Amps.
The minimum recommended mains circuit
breaker rating for a Weldmatic 150 is 16
Amps.
Note :
Due to normal variations of sensitivity,
the tripping time of some 16A circuit
breakers may limit the duty cycle available
from the Weldmatic 150. A higher rated
circuit breaker can be selected, but the mains
wiring capacity must be rated to suit.
The current rating of the mains cable
depends on cable size and method of
installation. Refer to AS/NZS 3008.1, Table 9.
If it becomes necessary to replace the mains
flexible supply cable, use only cable with
correct current rating. Access to the supply
terminals is gained by removing the power
source side panels.
The replacement cable must be fitted and
retained in the same manner as the original.
Output Voltage Polarity
The design of the Weldmatic 150 allows
selection of the output voltage polarity.
To work clamp
To gun cable
Positive Wire
G.M.A.W. with solid consumable wires is
carried out with the work piece Negative and
the welding wire Positive.
To setup for this condition, connect the
‘WORK’ lead plug into the (-) output socket
on the Power Source, and the ‘WELDING’
lead from the power source into the (+)
socket, as in Figure 2.
Negative Wire
Some ‘self-shielded’ flux cored consumable
wires are operated with the work piece
Positive and the consumable wire Negative.
Refer to the manufacturers data for the
particular consumable wire to be used.
To setup for this condition, connect the
‘WORK’ lead plug into the (+) output socket
on the Power Source, and the ‘WELDING’
lead from the power source into the (-)
socket, as in Figure 3.