Eppendorf 5000 Digital Tier Shake - Manual (Page 25)

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Innova 5000  M1196-0050 Operating Manual
5 5 S S
E E R R V V I I C C E E
The following section describes basic service procedures and provides instructions to install
optional features. All of these procedures must be performed by a qualified service
engineer.
5.1 Fuse Replacement
The unit design incorporates a circuit breaker, which is used as an ON/OFF switch.
There is one fuse on the rear of the control box to protect the control circuitry.
To remove a fuse, insert a small flat-bladed screwdriver and turn counter-clockwise
until it disengages and the fuse holder springs free. Check the fuse and, if it has
failed, replace the fuse with a new fuse as identified in the Spare Parts List (see
Section 5.1). Spare fuses are supplied with the unit.
5.2 Changing Voltage & Frequency
Innova 5000 is set to the appropriate line voltage and frequency prior to shipment.
The voltage selector switch, however, is a universal power-entry device which can be
reset to adapt to worldwide power requirements.
If it is necessary to change the voltage or frequency, the Service Engineer will:
1. Set the
ON/OFF switch (located on the control panel of the unit) to OFF .
2. Disconnect the unit from the power source.
3. Use a flat-bladed screwdriver to raise the lock tab under the voltage selector and
remove the fuse drawer portion of the power entry module (see Figure 6 on the
following page).
4. Remove the fuse holder, rotate it until the appropriate voltage appears in the fuse
drawer window, and replace the fuse holder.
WARNING!
BEFORE any service or maintenance intervention on the
instrument, the Service Engineer must turn the power switch
OFF and disconnect the power cord.