1
Figure 23 -
Internal Fuse Replacement
1.
Fuse, slow-acting (10 A)
DANGER!
Risk of electric shock!
The unit is mains powered. Using the On/Off switch on the humidifier to shut down the unit will
NOT shut off power to the control cabinet. Live parts may be exposed when the access panels or
doors are removed. Touching live parts may cause severe injury or even death.
Prevention:
Before performing any work inside the humidifier, shut down the humidifier properly, as
described in
"Shutting Down the Unit" on page 37
. The unit must be connected to the mains only after all
mounting, installation, and maintenance work has been completed, checked for correct workmanship,
and the access panels/doors are closed and fastened securely. Secure the unit against accidental
power-up.
Only qualified personnel should perform maintenance or repairs on the unit.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the control cabinet in the humidifier are sensitive to
electrostatic discharge (ESD).
Prevention:
Take appropriate measures to protect the electronic components inside the unit against
damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
Only a qualified service technician authorized by the customer should replace the fuses in the humidifier.
Always replace defective fuses that match the specifications given in the procedure.
NEVER
short-circuit and bypass the fuses.
There are three locations where fuses should be replaced:
l
"Fuses on the Backup Battery Board and Driver Board" on the next page
l
"Fuses on the Transducer Driver Board" on the next page
US
2588787_B_EN_2005_US_OM
Maintenance | 53
Summary of Contents for US 13
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