Rtech PLASMA P31C Manuel utilisateur

www.r-techwelding.co.uk

Email: sales@r-techwelding.co.uk

Tel: 01452 733933 Fax 01452 733939

PLASMA P31C

INVERTER PLASMA CUTTER

OPERATION INSTRUCTIONS

Version 2021-11

Thank you for selecting the R-Tech Plasma 31C Inverter Plasma Cutter

The Plasma 31C has many benefits over traditional transformer plasma cutters, including infinite

power control, HF contact start and quick fitting cost effective torch, long-life cost-effective torch

consumables and a 35% industrial duty cycle

We want you to take pride in operating our Plasma 31C as much pride as we have taken in making

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

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.

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 equipment identification below for future reference. This information can be found on

data plate at rear of machine.

Product Plasma P31C

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 3 years parts and labour warranty, we will cover cost of collecting and

returning item to you (UK mainland only, other areas are RTB). External items, torch, earth lead etc. are

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

Introduction

The R-Tech Plasma 31C is a member of our field acclaimed family of welding products.

Premium features include: -

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

Infinite cutting power adjustment, allows fine tuning of cut characteristics

HF start – Enables easy arc starting

Digital amp meter

Quick fitting torch for easy torch fitment/replacement

Long life – Low-cost torch consumables

35% Duty cycle at 30 Amps @ 40ºC

Recommended Processes

The R-Tech Plasma 31C is recommended for the plasma cutting processes within its output capacity of

30 Amps DC

Equipment Limitations

The R-Tech Plasma 31C 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 31C is rated at 30 Amps at 35% 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

31C

Power Voltage

240V 50/60Hz

Input Current

10.5amps I

-eff (13amp fuse slow blow)

Rated Output Current

30A

Current Adjusting Range

- 30A

-load Voltage

200V

Rated Duty Cycle

35%

Working Mode

HF Contact Start

Air Pressure

0 PSI – Working Air Pressure (Air flowing)

Max. Cutting Thickness (Clean cut mild steel)

8mm

Max.

Cutting Thickness (Severance cut mild steel)

12mm

After Flow Time

10 Seconds

Dimensions

390 X 190 X 290

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.

Always use recommended lifting equipment.

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 for 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

Direct interference from welder power source

Direct interference from the welding leads

Direct interference radiated from feedback into power lines

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

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

should minimize problems.

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).

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

practical.

Be sure the torch and earth lead rubber coverings are free from cuts and cracks that

allow welding power leakage

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.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 31C Plasma Cutters requires a 240V 50/60Hz 1-Phase supply. It requires an 13A

supply. It comes with a mains cable attached.

Connect wires according to national coding.

Brown wire – Live, Blue wire – Neutral

Green/Yellow Wire – Earth (Ground)

Connecting to an Engine Driven Generator

If connecting this Plasma Cutter to an engine driven generator, please ensure

the following

Minimum Generator KVA Output – 5KVA 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 31C

Air pressure connection / setting

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 -Set air pressure to70psi when air is flowing through

torch.

Air inlet connector

Connect hose from air compressor onto standard male PCL fitting – Fitting can be changed

if required to suit.

Note: If regulator fills with water, unscrew thumbscrew underneath to slowly drain of water,

screw back tight once drained.

Rear machine connections

1. On / Off Switch

Turns machine on and off, the switch illuminates when machine turned on

2. Mains input cable

Fit required plug as per your electrical installation

3. 2nd Earth Connector

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

Front machine connections

Torch power connector

Connect the main torch cable and screw clockwise until tight

Torch switch socket

Connect the torch switch plug (2 pin) and screw on retaining ring to secure

Earth / Workpiece connector

Connect the earth lead 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

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