Service And Maintenance; Maintenance / Cleaning; Fault Finding / Diagnosis / Repair; Replacing A Defect Mains Fuse - Elektro-Automatik PSI 9000 3U Betriebsanleitung

4.

Service and maintenance

4.1

Maintenance / cleaning

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
power loss. Heavily dirt filled fans can lead to insufficient airflow and therefore the DC output 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.
4.2

Fault finding / diagnosis / repair

If the equipment suddenly performs in an unexpected way, which indicates a fault, or it has an obvious defect, this
can't 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 the supplier (with or without guarantee). 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.
4.2.1

Replacing a defect mains fuse

The device is protected by up to six 6.3x32 mm fuses (T16 A, 500 V, ceramic) inside the device. TTo 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.
Opening the device and replacing the fuses must only be carried out by technically trained
personnel!
Tools required: Torx 10 screwdriver, flat screwdriver (approx.5 mm), multimeter
► Step 1: Opening the device
1.
Switch off at the mains switch and remove plug.
2.
Remove the top cover of the device (5 screws at the back, 5 on the front, 7 on each side, all Torx 10)
3.
Remove the plastic cover(s) of the power modules.
► Step 2: Replacing a defect fuse.
1.
As it is usually unknown 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.
2.
Remove the soft plastic cap from the fuse to be tested and carefully prise out the fuse with a flat screwdriver.
3.
Check whether the fuse is intact with a multimeter, and if defective, replace with a similar type (size, values, lag)
4.
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).
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
PSI 9000 3U Series
www.elektroautomatik.de
ea1974@elektroautomatik.de
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