150AMP MMA
Inverter
An inverter based MMA welding unit
giving a maximum 150amp when
MMA welding.
Operating & Safety Guide HW003
Switch the unit ON by moving the ON / OFF
switch to the ‘I’ ON position. The red ‘POWER’
lamp will illuminate.
Turn the welding current selector dial to give the
required welding current.
There is a hot start facility built into this unit and it is fully
automatic, giving a 20% boost of the selected welding
current for 1.5 seconds.
Control the MMA dynamics by adjusting the arc
force dial.
At minimum the arc is softer with less
penetration and splatter. At maximum, the arc is rougher
with deeper penetration but more splatter. Note also that
the maximum end of the force range is ideal for
use with cellulosic and low hydrogen electrodes.
You are now ready to weld.
Holding the welding rod/electrode holder at an
angle of 60-70 degrees to the surface, move it
towards the work until it strikes an arc.
Now, keeping the arc about 3mm long, work
slowly along the weld in a series of semicircular
sweeps across the line of the joint.
Chip off any slag build-up on the weld before
making a second pass along the joint.
Note that recommended settings are merely
guides. Changing them slightly may give better
results. So, always make a test weld and adjust the
settings as necessary.
Never push the equipment beyond its design
limits. If it will not do what you want with
reasonable ease and speed, assume you have the
wrong type or size of welder for the job. Ask at
your local HSS Hire Weld Depot for advice.
When not in use,
store the equipment somewhere
clean, dry and safe
from thieves.
Keep the equipment clean.
You will find this less of a
chore if you clean it up regularly rather than wait until
the end of the hire period.
Switch OFF and unplug the unit. Leave everything
to cool then take the earth clamp off the work.
Remove the welding rod and disconnect all leads
and coil them up neatly ready for return
to your
local HSS Hire Weld Depot.
FINISHING OFF
EQUIPMENT CARE
BASIC TECHNIQUES
Code 55304
©HSS Hire Service Group Plc 2000 No. HW003/01
Group Office: 25 Willow Lane, Mitcham, Surrey CR4 4TS
Web Site: http://www.hireweld.com
…any comments?
If you have any suggestions to enable us to improve
the information within this guide please fax your
comments or write to the Product Manager at the
address below
Fax: 020 8687 5001
HW003/01
