Fronius FK 4000, Operating Instructions Manual, Page: 19 / 52

Options
FK 4000 auto-
transformer This option is available for the following devices:
-
FK 4000 R
- FK 4000 Rob
- FK 4000 R FC
The FK 4000 and FK 4000 R US cooling units are equipped with the FK 4000 auto-trans-
former option as standard.
- The FK 4000 auto-transformer is required if the cooling unit must be operated using
a multivoltage power source (MV). The multivoltage power source has an input
voltage of 3 x 200 - 240 V / 3 x 380 - 460 V (+/- 10%)
- The FK 4000 auto-transformer converts this voltage from the power source into what
the cooling unit needs
FK 4000 R flow
sensor with
coolant filter This option is available for the following devices:
-
FK 4000 - only if the interconnecting hosepack does not exceed a length of 5 m (16
ft. 5 in.)
- FK 4000 R
The FK 4000 R US, FK 4000 R FC and FK 4000 Rob cooling units are fitted with the flow
sensor with coolant filter option as standard.
How it works:
-
The option monitors the coolant flow during welding
- If the coolant flow falls below 0.7l/min (0.18 gal./min [US]), "no | H2" is automatically
displayed, the welding current is interrupted and the cooling unit switches off
- If the welding system has a Comfort or WeldProcessData (OPC Fronius LocalNet
server) control panel, the coolant flow can be shown on it
•
To display the coolant flow value, press the F3 parameter selection / indicator
key on the Comfort control panel
A disruption in the coolant flow can occur as a result of:
-
Insufficient coolant
- Contaminated coolant
- Leaks in the cooling circuit
- Faulty coolant pump
- Frozen coolant (welding at too low a temperature)
Thermostat This option is available for the following devices:
-
FK 4000
- FK 4000 R
- FK 4000 R FC
- FK 4000 R US
The FK 4000 Rob cooling unit has a thermostat option as standard.
19
EN