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Janet Ferrao

Eppendorf 5810R/5804R old style connections

Identify if it is the “Old style” by serial number less than 10,000 or by the color/style of the START and STOP buttons on the Control Panel.


This model has a separate Frequency Control module and Main board.


The Main board may come in different variations and firmware versions.


Connections are as images below . UNPLUG THE CENTRIFUGE . First connect X10, X6, X11 and the lid motor connections. The lid motor terminal are polarized. Note: One terminal is smaller than the other .


Next connect the X4- the motor blower fan, X5- the compressor fan as shown below


With a large flat head screwdriver push release back the connector will open up …. this will allow you to push the wire conductor in .

Next connect X2 … note U1 (black conductor) PE(Ground) and N for neutral ( white or blue conductor). This is the connection to the Frequency Converter . Note observe the orientation on the filter.

Line is the side the conductors will connect into your Main board X2 .

Connector quick release

Connect x9 using small ribbon cable … note the orientation.

Final connections for the Main board is X1 and X3. Just plug ins.

Review all you connections as below before proceeding.


Mount the board to the chassis using 5 screws.



CONNECTING FREQUENCY CONVERTER .

Only electrical connections shown. Please observe your mounting bracket type as there are two variations.


First connect motor windings and Ground as shown below.


Connect S102 with conductors from the filter… observe orientation LOAD side will be connected to the frequency converter.



Next connect the Ribbon cable, the motor temp

Lastly connect Chopper resistors 68 Ohms each on your mounting bracket.

Connect Display with large ribbon cable from your Main board and Ground wire

Mount the front panel on the front of the centrifuge.

Plug the Main Power in. Push the lid down ( this will allow your compressor to turn on). Set temp to 10 degrees and let it be for about 5-10 minutes before you start a run.


Reccomendations: always good practice to initialize the unit in the Service Mode before you start a run.


Also good practice to replace the Blower/ Motor fan - common failure and reason for damage to circuits.

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