CONTENTS
5.1MAINTENANCE AND CLEANING
ALS 20x 256
GB
5.1.1Replacing fuses
This section counts only for ALS 20X. The fu- ses at the ALS 256 cannot be replaced.
WARNING!
The machine operates using mains voltage! Touching live electrical parts may expose you to hazardous electrical currents and may lead to burns.
Make sure that the machine is switched off and the power cable is unplugged before removing the fuse insert.
CAUTION!
Risk of fire, if a wrong fuse type is inserted. Only replace fuses with the type and rating specified in this manual.
The F1 and F2 fuses protect the primary side of the transformer. At any given time, only one of the two fuses is active. Which fuse is active depends on the switch setting of the voltage selector switch.
Active fuse | Mains voltage | Switch setting |
|
|
|
F1 | 230 V | 230 |
|
|
|
F2 | 110 V | 115 |
[49]Relation between the switch setting of the voltage selector switch and the active fuse.
Tool: Screwdriver
Turn off the unit. Unplug the power cable.
Rotate the fuse holder a few degrees anticlockwise.
–The fuse holder pops up.
Take the fuse out of the fuse holder. Replace defective fuse.
Replace the fuse holder and rotate it clockwise, while applying light pressure, until the slot is vertically positioned.
Required fuse type:
– T5AH 250 V
A 
[50] Fuse holder (A) of the ALS 20x.
The CPU board and sensors are protected by a separate fuse in the switching power supply that must/may never be replaced.
If either of the two fuses is not working properly, only the drive motors are affected; the display and sensors continue to operate as normal.
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