Operating instructions

64 GMS810-/GMS811-FIDOR · Operating Instructions · 8013911 V1-0 · © SICK AG
Clearing Malfunctions
Subject to change without notice
8.1 Necessary technical knowledge for repairs
8.2 Replacement of fuses
 Disconnect the device from the mains.
FIDOR contains several fuses.
 If the POWER LED does not light despite connected supply voltage and switched on
mains switch:
Check the fuses in the power plug (
 p. 64, §8.2.1).
 If the nominal temperature of the detector is not reached and the ambient temperature
is displayed, this could be caused by the tripping of the internal temperature monitor or
a defective heating. Contact SICK Customer Service
8.2.1 Mains fuse
The mains fuse is in the equipment switch (rear of device).
Fig. 9 Replacement of fuse
8.3
Blinking measuring display and yellow LED
When the measuring display and the yellow LED are blinking:
Status “Maintenance request”, “Failure” or “Uncertain operating state” is active:
1 Press “Menu”.
2 Go to the “FIDOR” menu.
3 Select the “Diagnostic” menu.
4 Select the “Operating mode” menu.
5 Check the error cause.
WARNING: Risk of explosions
 Only technicians with special FIDOR training are allowed to perform mainte-
nance tasks on the FIDOR.
 Use original SICK spare parts only.
CAUTION: Hazards caused by electric voltages
 Only let the work described in the following be carried out by skilled electri-
cians who are familiar with potential risks and are able to avoid them.
Mains voltage Fuse
115 V and 230 V 8 A medium time-lag, 5x20