Telwin GRA3000 Bedienungsanleitung

MANUALE
ISTRUZIONE
INSTRUCTION MANUAL
IMPORTANT NOTE:
BEFORE USING THE EQUIPMENT READ THE INSTRUCTION MANUAL
CAREFULLY!
DESCRIPTION OF THE COOLING UNIT
This liquid cooling unit must only be used for cooling MIG/MAG and TIG
water welding torches.
TECHNICAL DATA
Data plate (TAB. 1)
The main data relating to use and performance of the cooling unit are
summarised on the rating plate and have the following meanings:
1- P : cooling power at a refrigerant flow rate of 1 l/min and an
1 l/min
ambient temperature of 25 °C.
2- symbol for system with liquid refrigerant.
3- symbol for main power supply.
4- U : Alternating voltage and frequency of cooling unit power supply
1
(allowed limits ± 10% ).
5- symbols referring to safety standards: before using the apparatus
read the instruction handbook carefully!
6- serial number for identifying the coolant unit (essential when asking
for servicing or spare parts, or finding the origin of the product).
7- EUROPEAN standard of reference for safety and construction of
cooling systems for arc welding.
8- I : maximum current absorbed by the line.
1 max
9- Protection rating of enclosure.
10- P : maximum pressure.
max
NOTE: The rating plate shown is an example to show the meaning of the
symbols and numbers; the exact values of the technical properties of the
cooling unit should be read directly on the rating plate of the unit itself.
INSTALLATION, SAFETY AND OPERATIONS
WARNING! ALL THE INSTALLATION OPERATIONS AND
ELECTRIC CONNECTIONS SHOULD BE CARRIED OUT WITH
THE EQUIPMENT TURNED OFF AND DISCONNECTED FROM
THE POWER SUPPLY. EXPERT AND QUALIFIED PERSONNEL MUST
CARRY OUT THE ELECTRIC CONNECTIONS.
LIFTING THE EQUIPMENT
The cooling unit described in this manual is not fitted with lifting systems.
POSITIONING THE EQUIPMENT
The installation position for the cooling unit must be chosen to ensure
that the cooling air inlet and outlets are not blocked in any way (forced
fan circulation, if fitted); at the same time, ensure that no conductive dust,
corrosive vapours, humidity, etc. could be sucked in.
A free space of at least 250 mm should be left around the cooling unit.
WARNING! Position the equipment on a flat surface
adequate to support the weight, to avoid it tipping over or
making dangerous movements.
POWER SUPPLY (ELECTRICAL CONNECTION)
The cooling unit must be connected to the welding machine using the
cable provided (FIG.B).
CONNECTION TO THE WELDING MACHINE
- Connect the cable supplied (FIG. B) to the cooling unit, using the
dedicated connector (5-pin female).
- Connect the connector at the other end of the cable (5-pin male) to the
corresponding outlet on the back panel of the welding machine.
(EN)
(EN) ........................pag. 1 (HU) .................... pag. 14
(IT) .........................pag. 2 (RO) .................... pag. 16
(FR) ........................pag. 4 (SV) ..................... pag. 17
(ES) ........................pag. 5 (DA) .................... pag. 19
(DE) ........................pag. 7 (NO) .................... pag. 20
(RU) .......................pag. 8 (FI) ....................... pag. 22
(PT) ..................... pag. 10 (CS) ..................... pag. 23
(EL) ..................... pag. 11 (SK) ..................... pag. 25
(NL) ..................... pag. 13 (SL) ..................... pag. 26
OPERATION
WARNING! THE TANK FILLING OPERATIONS SHOULD
ALWAYS BE PERFORMED WITH THE MACHINE SWITCHED
OFF AND DISCONNECTED FROM THE MAINS SUPPLY.
ONLY USE THE COOLANT RECOMMENDED BY THE MANUFACTURER
OF THE COOLING UNIT.
NEVER USE POLYPROPYLENE BASED ANTIFREEZE LIQUIDS.
1- Use the nozzle to fill up the tank: Tank CAPACITY = 8 l; do not overfill
it to prevent any liquid overflowing.
2- Close the tank cap.
3- Connect the external cooling tubes to the relative couplings
paying attention to the instructions below:
- : LIQUID DELIVERY (cold)
- : LIQUID RETURN (hot)
Front Connections
To use these couplings, you need to insert the "cap" supplied (FIG. E),
in the rear delivery connection (FIG. F).
Rear Connections
They should be used to couple the water tubes in the RA cable
bundle of the external feeder (where present), but also for coupling
of the water tubes of the TIG RA torch, by inserting the adaptor
available as an accessory (Fig.C).
4- Connect to the power supply socket and place the switch on position
"I". The cooling unit starts to work making the liquid in the torch
circulate.
5- If the cooling unit is connected to the welding machine, the switch
is not used because the power supply control is managed by the
welding machine itself.
The cooling unit operations may differ depending on the type of
welding machine connected. There are applications in which start-
up of the unit takes place at the same time as the welding machine
starts and others where the cooling unit starts to work automatically
starting from the instant welding begins; when welding stops, the
unit can stay on for a time of between 3 and 10 minutes based on the
intensity of the current used.
Circuit pressure control, i.e. liquid circulation, is conducted by the
welding machine: if there is an insufficient liquid pressure signal,
welding is commanded to STOP and an alarm is simultaneously
displayed on the control panel display of the welding machine.
6- After running the unit for a few minutes, especially if flexible
connection extension hoses are being used, it may be necessary to
top-up the tank level with a suitable amount of liquid.
7- If the signal light switches on (orange) on the front of the unit
(insufficient liquid pressure), you may need to eliminate the air in the
circuit to start liquid circulation. With the unit on, manually unscrew
the bleeder valve (Fig. D) for a few seconds to stimulate the start of
liquid circulation, and then re-start the valve to avoid leaks.
If circulation does not start and the indicator light stays on,
immediately switch off the cooling unit and refer, for first
intervention, to the maintenance section.
8- Do not operate the unit if the torch tubing is not connected and,
where necessary (see point 3), the closure "cap" on the rear delivery,
otherwise liquid could freely leak which would cause damage to the
electrical circuits nearby.
MAINTENANCE
WARNING! BEFORE CARRYING OUT MAINTENANCE WORK,
MAKE SURE THE COOLING UNIT IS SWITCHED OFF AND
DISCONNECTED FROM THE POWER SUPPLY.
If checks are carried out while the inside of the cooling unit is live,
this could cause a serious electric shock due to direct contact with
live parts and/or injury due to direct contact with moving parts.
- 1 -
Cod.954353
(HR-SR) ............. pag. 28
(LT) ...................... pag. 29
(ET) ..................... pag. 31
(LV) ..................... pag. 32
(BG) .................... pag. 34
(PL) ..................... pag. 35
(AR) ..................... pag. 37