Bühler technologies EGK 4S Kurzanleitung Seite 9

EGK 4S
Disconnect the compressor, the fan, the heating or the peri-
staltic pumps, respectively, and then carry out the insulation
tests.
Plug connection
This device has one EN 175301-803 plug each for the power
supply and the signal output. If the lead is connected cor-
rectly, these cannot be confused. Therefore please be sure to
correctly reassemble the plugs after connecting the wires. Be-
low you will find the pin assignments, with the numbers cor-
responding to those on the plugs:
pin assignment
status output
function ok
alarm
Fig. 1: A05-100002 Cooler electric supply
The mains supply must be protected with 10 A. The clamping
area has a diameter of 8-10 mm. If the unit features a peri-
staltic pump, it must be connected to a power source separ-
ately.
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be
displayed. The display will flash until the block temperature
has reached the preset target value (± adjustable alarm
range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the
temperature will continuously be displayed and the status
contact switches over.
If the display flashes during operation or an error message ap-
pears, please refer to bullet "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.
BX450004 ◦ 04/2023
5.1 Use of menu functions
Overview of the operational principal:
Use this short description if you have experience with the
device.
Operation is carried out by only the keys with the following
functions:
power supply
Key
• Switch from measurement display to main
menu
• Selection of the display menu item
• Accepting the changed value or selection
• Switch to the upper menu item
• Increase of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
• Switch to lower menu item
• Decrease of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
Function
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