Rtech PLASMA 60HF User manual

www.r-techwelding.co.uk

Email: [email protected]

Tel: 01452 733933 Fax 01452 733939

PLASMA 60HF

INVERTER PLASMA CUTTER

OPERATION INSTRUCTIONS

Thank you for selecting the R-Tech Plasma 60HF Inverter Plasma Cutter

The Plasma 60HF has many benefits over traditional transformer plasma cutters,

including infinite power control, HF pilot start and HF pilot restart which is ideal for cutting

mesh etc , quick fitting cost effective torch, long life cost effective torch consumables and

a 60% industrial duty cycle

We want you to take pride in operating our Plasma 60HF as much pride as we have taken

in making this product for you. Please read all information in this manual before operation

PLEASE EXAMINE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY

When this equipment is shipped, title passes to the purchaser upon receipt from the courier.

Consequently all claims for material damaged in shipment must be made by purchaser against the

transportation company used.

Please record your plasma cutting equipment identification below for future reference. This information

can be found on data plate at rear of machine.

Product Plasma 60HF

Serial No. ___________________________________

Date of Purchase _____________________________

Where Purchased _____________________________

Whenever you request replacement parts or information on this equipment please always supply

information you have recorded above

This product is covered by 2 years parts and labour warranty, you are responsible for costs of shipping

unit to us, we will cover cost of returning item to you. External items, torch, earth lead etc are covered by

3 months warranty. Any faults/damage found caused by customer will be charged pro-rata.

Pay particular attention to the safety instructions we have provided you for your

protection

The level of seriousness to be applied to each section is explained below

WARNING

This statement appears where the information must be followed exactly to avoid serious personal

injury.

CAUTION

This statement appears where the information must be following to avoid a minor personal injury

or damage to this equipment.

Introduction

The R-Tech Plasma 60HF is a member of our field acclaimed family of welding products.

Premium features include:-

1. Inverter power source – more efficient to operate, provides smoother weld

characteristics.

2. Infinite cutting power adjustment, allows fine tuning of cut characteristics

3. HF Pilot start – Enables easy arc start even on painted surfaces

4. HF pilot arc restart – ideal for cutting mesh etc

5. Digital amp meters

6. Quick fitting torch for easy torch fitment/replacement

7. Long life – Low cost torch consumables

8. 60% Duty cycle at 40 Amps @ 40ºC

Recommended Processes

The R-Tech Plasma 60HF is recommended for the plasma cutting processes within its output

capacity of 60 Amps DC

Equipment Limitations

The R-Tech Plasma 60HF is protected from overloads beyond the output ratings and duty cycle

as per machine specifications with thermostat protection of the output coils and rectifiers.

Cutting Capability – Duty Cycle

The R-Tech Plasma 60HF is rated at 60 Amps at 60% duty cycle on a ten minute basis. If the

duty cycle is exceeded a thermal protector will shut machine off until the machine cools.

Technical Specifications

MODEL PLASMA 60HF

Power Voltage 415V 3-Phase 50/60Hz

Input Current 12.5A

Rated Output Current 60 Amps

Current Adjusting Range 20-60 Amps

No-load Voltage 200V

Rated Duty Cycle 60%

Working Mode HF Start

ir Pressure 55 PSI

Max. Cutting Thickness (Clean cut mild steel) 17mm

Max. Cutting Thickness (Severance cut mild steel) 25mm

fter Flow Time 10 Seconds

Dimensions / Weight 620x260x550 mm / 30KG

Safety Precautions

Read entire section before starting installation

WARNING!

Electric Shock can kill – Only qualified personnel should perform this installation. Turn off input

power at the fuse box before working on this equipment. Do not touch electrically live parts.

Always connect the machine to an earthed mains supply as per national recommended

standards.

Select suitable location

Place the plasma cutter where clean cooling air can freely circulate in and out of the front & rear

louver vents. Dirt, dust or any foreign material that can be drawn through vents into plasma cutter

must be kept to a minimum. Failure to observe these precautions can result in excessive

operating temperatures which can lead to plant failure.

Grinding

Do not direct grinding particles towards the plasma cutter. An abundance of conductive material

can cause plant failure.

Stacking

This machine cannot be stacked.

Transport – Unloading

Never underestimate the weight of equipment, never move or leave suspended in the air above

people. Use recommended lifting equipment at all times.

WARNING!

Falling Equipment can cause injury. Never lift plasma cutter with gas bottle attached. Never lift

above personnel.

Tilting

Machine must be placed on a secure level surface or on a recommended undercarriage/trolley.

This machine may topple over if this procedure is not followed.

Environmental Rating

The plasma power source carries the IP21S rating. It may be used in normal industrial and

commercial environments. Avoid using in areas where water / rain is around.

Electrical Installation

WARNING!

ELECTRIC SHOCK CAN KILL

Machine grounding and High Frequency Interference Protection

This plasma cutter must be grounded to earth. See national electrical codes fro proper grounding

methods.

The high frequency generator being similar to a radio transmitter may cause interference to radio,

TV and other electronic equipment. These problems may be the result of radiated interference.

Proper grounding methods can reduce or eliminate this.

Radiated interference can develop in the following ways

1. Direct interference from welder power source

2. Direct interference from the welding leads

3. Direct interference radiated from feedback into power lines

4. Interference from re-radiation by un-grounded metallic objects.

Keeping these contributing factors in mind, installing equipment as per following instructions

should minimize problems.

1. Keep the welder input power lines as short as possible and enclose as much of them as

possible in metal conduit or equivalent shielding. There should be a good electrical

contact between this conduit and ground (Earth).

2. Keep the work and electrode leads as short as possible. Tape the leads together where

practical.

3. Be sure the torch and earth leads rubber coverings are free from cuts and cracks that

allow welding power leakage

4. Keep earth lead connection to work in good condition – Clean area on workbench where

earth clamp is situated on a regular basis.

Input Connections

Make sure the voltage, phase and frequency of input power is as specified on machine rating

plate located at rear of machine.

Have a qualified electrician provide suitable input power as per national electrical codes. Make

sure machine is earthed / grounded.

Make sure fuse or circuit breaker is correct rating for machine. Using fuses or circuit breakers

smaller than recommended will result in ‘nuisance’ shut off from welder inrush currents even if

cutting at low amperages.

Failure to follow these instructions can cause immediate failure within the welder and void

machines warranty.

Turn the input power OFF at the mains switch & fuse box before working on this equipment.

Have a qualified electrician install & service this equipment.

Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharge before

working inside this equipment. Do not touch electrically live parts

The Plasma 60HF Plasma Cutters require a 415V 3 Phase 50/60Hz supply. It requires an 12.5

Amp supply. It comes with a 3 metre mains cable attached.

Connect wires according to national coding.

Brown wire – Live

Blue wire – Live

Black Wire - Live

Green/Yellow Wire – Earth (Ground)

Connecting to a mains electrical supply

THIS MACHINE IS OF AN INDUSTRIAL SPECIFICATION AND MUST BE

FITTED TO A 16AMP 415V MAINS INPUT

Connecting to an Engine Driven Generator

If connecting this Plasma Cutter to an engine driven generator please

ensure the following

Minimum Generator KVA Output – 13.5 KVA continuous

Generator to be fitted with AVR (automatic voltage regulation)

DO NOT USE ON A GENERATOR WITHOUT AVR

Connecting to a generator without the above minimum requirements will in-

validate your warranty.

Connections for Plasma 60HF

Rear Machine connections

Fig 1

1. Air pressure regulating knob

This regulates the air pressure as displayed in gauge on front of machine.

To adjust pressure pull knob upwards and turn to adjust pressure, once correct

pressure is obtained press down knob to secure.

2. Air pressure input

Screw supplied PCL fitting into regulator ensuring no air leaks

You can also fit other connectors to suit your needs

3. 2nd Earth connection

This can be used to earth the machine to workbench if you are experiencing

interference from the HF – Sometimes required when using CNC automated machinery

- Not normally used

4. Mains input cable

Fit required plug as per your electrical installation

5. On / Off Switch

Turns machine On / Off

Front machine connections

Fig 2

1. Earth / Workpiece connector

Connect the earth lead (negative - ) to this connector.

Insert male connector into socket and twist clockwise until tight.

Secure other end of earth lead to Workpiece via the earth clamp.

2. Fuse holder – Pilot Arc Protection

Protection fuse for pilot arc start

3. Torch switch socket

Connect the torch switch plug (4 pin) and screw on retaining ring to secure

4. Pilot lead connector

Connect the ring terminal from torch. Un-screw retainer, fit ring terminal onto shaft and

refit retainer ensuring it is tight

5. Torch power connector

Connect the main torch cable by screw clockwise until tight.

Controls and Settings

Fig 3

1. Air pressure gauge

This shows the air pressure as set by regulator at rear of machine.

This should be set to 55PSI when the test gas button is activated.

2. Amperage control knob

This adjusts the amperage (cutting power) from 20 to 60 amps

Note: LED display will show cutting amperage when you are cutting

3. L.E.D amperage display

When cutting this shows the actual cutting amperage, this allows the machine to be

calibrated to BS if required by your company

4. Test Gas / Cutting selector switch

When in the up position this is test gas mode, when setting air pressure switch to test gas

so you obtain actual air flow cutting pressure

When in the down position this is cutting mode, you can now start cutting

5. Auto / Standard switch

When in the down position this is in standard cutting mode, this is the normal operating

position for plasma cutting with a hand held and machine type torch

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