HSS Hire HW038 Operating & Safety Manual Download Page 2

For advice 

on the safety and suitability of this equipment

contact your local HSS Hire Shop.

There is a serious risk of personal injury if you do
not follow all instructions laid down in this guide.

This equipment should be used by an able bodied,
competent adult 

who has read and understood these

instructions. Anyone with either a temporary or permanent
disability should seek expert advice before using it.

Keep children, animals and bystanders away from
the work area.

Never use this equipment if you are ill,
feeling tired, or under the influence of

alcohol or drugs.

Skin must be covered – protective

clothing, footwear and gauntlets must

be worn.

A head shield with a 10 EW shade MUST be

worn by anyone in the work area – goggles

are not suitable.

Fumes produced by the welding process, if

inhaled, can be harmful to health. A suitable

welding mask must be worn

when using this

equipment. Respiratory protective equipment is available
for hire, contact your local HSS Hire Shop for details.

A fume extractor or smoke eliminator should be
used in the work area.

If the head shield or lens becomes damaged, return
it to your local HSS Hire Shop for exchange.

Never use welding equipment near any combustible
gases or materials.

Never use welding equipment near computers or
any sensitive electronic equipment.

Always transport, store and operate the machine in
an upright position.

Keep the power unit’s air vents clear of all
obstructions.

Always switch the equipment OFF before making
any adjustments to it. Never leave it switched ON
and unattended.

Let It Cool

Handle welding equipment and work with

care – it will be hot. Leave equipment to cool

before changing welding rods or moving

earth clamps.

GENERAL SAFETY

The HSS 200amp Inverter Welder is available in
two model types, a single voltage 240V PFC

(power fluctuation control)

or a dual voltage

240V/415V standard model.

If using a 240V supply the unit can be connected
using a 32A 

(blue)

240V plug 

(not supplied)

or be

wired direct to a 35A dedicated fuse on the
consumer unit.

If using a 415V 3-phase supply, connect the two
supply wires to two phases and connect the earth
wire to the earth connection.

Whichever you are using, all connections may only
be made or removed by a qualified electrician. Do
ensure the electrician sets the unit’s ON/OFF
switch to suit the supply voltage, failure to do so
could cause the unit to ‘burn out’. 

If the equipment fails, or if its power supply cable
becomes damaged, return it. 

Never try to repair 

it yourself.

Keep cables out of harm’s way,

and clear of the 

work area.

Extension leads should be fully unwound and
loosely coiled, away from the equipment.

Never run

them through water, over sharp edges or where they
could trip someone.

Keep the equipment dry, using electrical
equipment in very damp or wet conditions can 
be dangerous. 

Ensure the welder and the power socket are switched
OFF before plugging into the power supply.

Ensure the workpiece is clean, dry and free from
rust, paint and grease. Aim to weld only bright,
bare metal.

Clamp workpieces securely in their final positions
to stop them moving during welding.

STICK WELDING, (MMA)…

For general purpose welding of mild steel/
fabrication, ideal where applications restrict the
use of gas

(oxy-acetylene) 

systems.

Connect the welding torch and earth clamp to
the terminals on the front of the unit. 

The electrode holder to the (+) positive, earth
clamp to the (–) negative.

Attach the earth clamp to the workpiece and fit an
appropriate welding rod to the electrode holder.

GETTING STARTED

ELECTRICAL SAFETY

Turn the function switch to the electrode holder
sign 

(top) and 

select the welding mode AC or DC

with the AC/DC switch

Now switch the welder ON

(there is an ON/OFF switch at the rear of the casing).

Turn the current control mode selector to the 
then turn the welding current control knob
until the required welding amperage is displayed
on the LED. You are now ready to stick/MMA weld.

TIG WELDING CONTROLS...

(Tungsten Inert Gas Shield) 

Used mainly in the

petrochemical industry for welding stainless steel,
aluminium and specialist pipelines.

Ensure the welder is switched OFF and isolated
from its power supply.

Connect the TIG torch and
earth clamp to the
terminals on the front of
the unit, this time with
the earth clamp to the (+)
positive. The TIG torch 
has a seven-pin connector
and a gas supply hose,
which should both be
connected.

Set the function switch to
one of the four available
settings.

These settings effect the
way the torch reacts to
each press or release of
the button.

2T (two-touch) press to activate torch, release to
deactivate.

4T (four-touch) press for gas, release to weld, press
again for slope down and release for post flow.

The symbols next to the torch represent the type
of welding current. Either Lift-TIG ( ) or HF-TIG,
high frequency ( ).

If Slope Up 

(the period of time taken for the current to

increase from establishment of an arc) 

is to be utilised

set the slope up dial to the required setting 

(graded

in seconds).

If Slope Down 

(the period of time taken for the current to

decrease from release of the torch button) 

is to be utilised

set the slope down dial to the required setting.

When slope is selected, turn the current
percentage dial to select a % of the welding
current, which the slope up will start from and
slope down will close to.

Set the post flow dial 

(the period of time, after the

welding current has stopped, that gas continues to flow)

as required.

Dual

Voltage

Model

240V

Model

Welding 

Current

Control Knob

Current

LCD

Temperature

Lamp

Function

Switch Stick

Weld

AC/DC

Switch

Balance

Button

Current

Percentage

Dial

Slope

Up

Current
Control

Mode

Selector

Slope

Down

Gas Post

Flow

Gas

Inlet

Gas

Connection Tig Torch

Socket

+ Connection

– Connection

ON/OFF

Switch

Current

Adjuster

Dial

Torch

Control

Button

TIG Torch

MMA/TIG AC/DC Inverter

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