Saf-Fro PRESTO 180 PFC Instruction De Securite D'emploi Et D'entretien page 4

EN
1.0 TECHNICAL DESCRIPTION
1.1 DESCRIPTION
The system consists of a modern direct current generator for the
welding of metals, developed via application of the inverter. This
special technology allows for the construction of compact light
weight generators with high performance. l'ts adjust ability, ef-
feciency and energy consumption make it an excellent work tool
suitable for coated electrode and GTAW (TIG) welding.
1.2 TECHNICAL DATA
DATA PLATE
PRIMARY
140A
Single phase supply
Frequency
Effective consumption 12 A
Maximum consumption 18,5 A
SECONDARY
Open circuit voltage
Welding current 10 A ÷ 140 A
Duty cycle 20%
Duty cycle 30%
Duty cycle 40% 140 A
Duty cycle 60% 120 A
Duty cycle 100% 100 A
Protection class
Insulation class
Weight
Dimensions
European Standards
The machine can be connected to a motor generator of power
meeting the dataplate specifications and having the following
characteristics:
- Output voltage between 185 and 275 Vac.
- Frequency between 50 and 60 Hz.
IMPORTANT: MAKE SURE THE POWER SOURCE MEETS
THE ABOVE REQUISITES. EXCEEDING THE SPECIFIED
VOLTAGE CAN DAMAGE THE- WELDING MACHINE AND IN-
VALIDATE THE WARRANTY.
1.3 ACCESSORIES (OPTIONALS)
Consult the area agents or the dealer.
1.4 DUTY CYCLE AND OVERHEATING
Duty cycle is the percentage of 10 minutes at 40°C ambient tem-
perature that the unit can weld at its rated output without overheat-
ing. If the unit overheats, the output stops and the over
temperature light comes On. To correct the situation, wait fifteen
minutes for unit to cool. Reduce amperage, voltage or duty cycle
before starting to weld again (See page III).
1.5 VOLT - AMPERE CURVES
Volt-ampere curves show the maximum voltage and amperage
output capabilities of the welding power source. Curves of other
settings fall under curves shown (See page III).
TECHNICAL DESCRIPTION
160A 180A
230 V
50/60 Hz
15 A 15A
21,5 A 25A
48,4 V
10 A ÷ 160 A 10 A-180 A
180A
160 A
140 A 140 A
120 A 120 A
IP 23
H
6,6 Kg
170 x 320 x 395 mm
EN 60974.1 / EN 60974.10
2.0 INSTALLATION
IMPORTANT: BEFORE CONNECTING, PREPARING OR US-
ING EQUIPMENT, READ SAFETY PRECAUTIONS.
2.1 CONNECTING THE POWER SOURCE TO THE MAINS
ELECTRICITY SUPPLY.
SERIOUS DAMAGE TO THE EQUIPMENT MAY RESULT IF
THE POWER SOURCE IS SWITCHED OFF DURING WELDING
OPERATIONS.
Check that the power socket is equipped with the fuse indicated in
the features label on the power source. All power source models
are designed to compensate power supply variations. For varia-
tions of + 15% a welding current variaton of +- 0,2% is created.
B E F O R E I N S E R T I N G T H E M AI N S
PLUG, IN ORDER TO AVOID THE FAIL
OF POWER SOURCE, CHECK IF THE
M A I N S C O R R E S P O N D S T O T H E
WISHED MAIN SUPPLY.
ON - OFF SWITCH :
This switch has two positions: ON = I and OFF = O.
2.2 HANDLING AND TRANSPORTING THE POWER
SOURCE
OPERATOR SAFETY: WELDER'S HELMET - GLOWES -
SHOES WITH HIGH INSTEPS.
THE WELDING POWER SOURCE DO NOT WEIGHT MORE
THAN 25 KG AND CAN BE HANDLED BY THE OPERATOR.
READ WELL THE FOLLOWING PRECAUTIONS.
The machine is easy to lift, transport and handle, though the fol-
lowing procedures must always be observed:
1. The operations mentioned above can be operated by the
handle on the power source.
2. Always disconnect the power source and accessories from
main supply before lifting or handling operations.
3. Do not drag, pull or lift equipment by the cables.
2.3 CONNECTION AND PREPARATION OF EQUIPMENT
FOR STICK WELDING.
• TURN OFF WELDER BEFORE MAKING CONNECTIONS.
Connect all welding accessories securely to prevent power
loss. Carefully follow safety precautions described.
1. Fit the selected electrode to the electrode clamp.
2. Connect the ground cable quick connection to the negative (-
) receptacle and locate the clamp near the welding zone.
3. Connect the electrode cable quick connection to the positive
(+) receptacle.
4. Use the above connection for straight polarity welding; for re-
verse polarity turn the connection.
5. On the unit preset for coated electrode welding
(Rif.1 - Pic. 1 page 4.).
6. Adjust welding current with ampere selector (Rif.3 - Pic. 1
page 4.).
7. Turn on the power source
3 EN