0740 800 210 Valid for serial no. 033-xxx-xxxx 101102
COOL 1
Service manual
S0740 800 210/E101102/P18
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Rights reserved to alter specifications without notice.
READ THIS FIRST 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TECHNICAL DATA 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAM 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component description 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COOL1 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DESCRIPTION OF OPERATION 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Cooling unit 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5AP1:1 Monitoring the coolant flow 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5AP1:2 Pump motor and fan ON/OFF 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5AP1 Component positions 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE INSTRUCTIONS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What is ESD? 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service aid 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTRUCTIONS 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing to welding equipment 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly instructions 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connections and control devices 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant connection 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water flow guard 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and cleaning 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling the coolant 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Caracteristics 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPARE PARTS 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTES 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S0740 800 210/E101102/P18
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READ THIS FIRST
Maintenance and repair work should be performed by an experienced person, and
electrical work only by a trained electrician. Use only recommended replacement parts.
This service manual is intended for use by technicians with electrical/electronic training for
help in connection with fault-tracing and repair.
Use the wiring diagram as a form of index for the description of operation. The circuit
boards are divided into numbered blocks, which are described individually in more detail in
the description of operation. Component names in the wiring diagram are listed in the
component description.
Use the spare parts list as a guide to where the components are located in the equipment.
The spare parts list is published as a separate document, see page 16.
This manual contains details of design changes that have been made up to and including
October 2010.
The manual is valid for COOL 1 with serial no. 033-xxx-xxxx
The COOL 1 is designed and tested in accordance with international and European
standards IEC/EN 60974.
On completion of service or repair work, it is the responsibility of the person(s)
performing the work to ensure that the product still complies with the requirements of
the above standard.
CAUTION!
Read and understand the instruction manual before
installing or operating.
CAUTION !
STATIC ELECTRICITY can damage circuit
boards and electronic components.
S Observe precautions for handling electrostatic-
sensitive devices.
S Use proper static-proof bags and boxes.
ESD
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TECHNICAL DATA
COOL 1
Power consumption 24V DC / 2A
Cooling power 1.3 kW (Rating at 40 K and 1 l/min)
Equivalent continuous A-weighted
sound pressure level
< 70 dB (A)
Coolant Ready mixed (50% water and 50% mono-ethylene glycol)
Coolant quantity 4.5 l
Maximum flow 2.0 l/min
Maximum pressure 4 bar
Operating temperature -10° to +40°C
Transportation temperature -20° to +55°C
Dimensions lxwxh 610 x 256 x 256 mm
Weight empty 12 kg
Enclosure class IP23
Enclosure class
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP23 is designed for indoor and outdoor use.
WIRING DIAGRAM
Component description
Component Description
5 Cooling unit
5AP1 Circuit board with control electronics
5M1 Pump with motor, 24V DC
5S1 Coolant pressure switch (enclosed in pump 5M1)
5EV1 Cooling fan, 24V DC
5SL1 Flow guard. Monitoring coolant flow (option)
5XP.. Plug connector (Pin)
5XS.. Socket connector (Sleeve)
5XT.. Terminal block
S0740 800 210/E101102/P18
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COOL1
S0740 800 210/E101102/P18
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DESCRIPTION OF OPERATION
This description of operation describes the function of circuit boards and other components
in the equipment.
5 Cooling unit
5AP1:1 Monitoring the coolant flow
Circuit diagram for coolant flow guard
COOL1 is prepared for optional coolant flow monitoring. Replace the jumper cable 513 with
the flow guard sensor, 5SL1, and connect it to terminal block 5XT1 (CN4) on cooling unit
board, 5AP1. The sensor switch opens at flow rate < 0.7 l/min. The MMC panel of the
system displays fault code 29 ,(no cooling water flow), if the input to the processor is high.
(Measure at point SP3 on 20AP1)
Supervision of hoses connection, ELP (ESAB Logic Pump) is not installed in COOL1.
5AP1:2 Pump motor and fan ON/OFF
The pump motor, 5M1, and cooling fan, 5EV1, are connected in parallell and powered from
the power supply board, 2AP3, in the power source. The power is 25V DC and named
25V_WP in the cooling unit board, 5AP1.
An output from the processsor on control board 20AP1 connects input 20XS5:2 (WP2) to
0V. (Measure at point SP1 on 20AP1). Transistor Q2 in cooling unit board, 5AP1, connects
pump motor and fan to 0V, and the pump and fan start.
The pump, 5M1, has an enclosed coolant pressure switch, 5S1, which switches off the
power to the pump motor if the coolant pressure is too high. This can occur if a hose is
folded which make flow to fail or stop. The cooling fan however is still powered and running.
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