Ea Elektro Automatik EA Elektro-Automatik EA-ELR 9250-140 3U Electronic Load 0 - 140 A 0 - 250 Vdc 0 - 7000 W 33200406 データシート

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

The device needs no maintenance. Cleaning may be needed for the internal fans, the frequency of cleanse is 

depending on the ambient conditions. The fans serve to cool the components which are heated by the inherent 

minimal power loss. Heavily dirt filled fans can lead to insufficient airflow and therefore the DC input would switch 

off too early due to overheating or possibly lead to defects.
Cleaning the internal fans can be performed with a vacuum cleaner or similar. For this the device needs to be opened.

If the equipment suddenly performs in an unexpected way, which indicates a fault, or it has an obvious defect, this 

can not and must not be repaired by the user. Contact the supplier in case of suspicion and elicit the steps to be 

taken.
It will then usually be necessary to return the device to Elektro-Automatik  (with or without warranty). If a return for 

checking or repair is to be carried out, ensure that:
•

the supplier has been contacted and it is clarified how and where the equipment should be sent.

•

the device is in fully assembled state and in suitable transport packaging, ideally the original packaging.

•

optional extras such as an AnyBus interface module is included if this is in any way connected to the problem.

•

a fault description in as much detail as possible is attached.

•

if shipping destination is abroad, the necessary customs papers are attached.

The device is protected by up to six 6,3x32 mm fusible cut-outs (T16 A, 500 V, ceramic) inside the device. To replace 

these the device must first be disconnected from AC supply and then opened. Inside are 1~3 power modules in 

black plastic housings, each of which holds two of the fuses.

Tools required: Torx 10 screwdriver, flat screwdriver (approx. 5 mm), multimeter 

Switch off at the mains switch and remove plug. Disconnect or switch off DC source and wait until the DC 

voltage has sunk to zero.

Remove the top cover of the device (5 screws at the back, 3 on the front, 4 on each side, all Torx 10)

Remove the plastic cover(s) of the power modules.

As it is not usually known which fuse is defect, they should all be checked. The fuses are on the front side 

wall (looking from the front of the device) of the power modules and are covered with a soft plastic cap.

Remove the soft plastic cap from the fuse to be tested and carefully prise out the fuse with a flat screwdriver. 

Check whether the fuse is intact with a multimeter, and if defective, replace with a similar type (size, values, lag) 

Repeat step 2 for all fuses.

Once all fuses have been checked and replaced, and if no other defect is apparent, the device can be reassembled 

(step 1 in reverse order).