CB-100-1
69
10 Maintenance
DANGER
Life-threatening voltages inside the frequency
inverter housing!
Contact can lead to serious injuries or death.
Never open the FI housing in operation! Switch
off the main switch and secure it against being
switched on again.
Wait for at least 5 minutes until all capacitors
have been discharged!
Before switching on again, close the FI housing.
Authorized staff
Maintenance work may only be carried out by qualified
electricians. Current guidelines apply with respect to
the qualification and expertise of the specialists.
Information
For reasons of guarantee, reliability and quality,
only qualified staff may carry out repairs on this
device. Unless stated otherwise, the VARIPACK
frequency inverters must not be dismantled. In
case of operating failure, the VARIPACK fre-
quency inverter must be returned.
Regular and preventive maintenance work
As part of regular service work on the system:
• Check the switch cabinet filter mats and clean or re-
place them, if necessary.
Every 5 years as part of preventive maintenance:
• Replace the cooling fans of the power stack.
• Replace fans in the heat sink (see chapter Replacing
fans in the heat sink, page 69).
10.1 Replacing fans in the heat sink
Prior to performing maintenance work on
the VARIPACK frequency inverter:
CAUTION
In operation, the heat sink of the VARIPACK fre-
quency inverter will get hot.
Risk of burns upon contact!
Prior to performing work on the VARIPACK fre-
quency inverter, disconnect the power supply
and wait for at least 15 minutes until the heat
sink has cooled down.
Technical data of the fan/fans:
• 24 V of low voltage
Replacing the fan or fans:
• if the VARIPACK frequency inverter has been
switched off in normal operation due to overtemper-
ature of the heat sink.
• as part of preventive maintenance, every 5 years.
Dismounting the fan or fans:
• Remove the two screws at the top of the heat sink
and take off the fan protective grating.
• Take out the fan or fans, pull the plugs of the wiring
and insert the new fan or fans. Make sure that the
correct fan side points to the top. (see figure 23,
page 69).
• Then screw on the fan protective grating again (tight-
ening torque 1.3 Nm).
Fig. 23: Replacing the fans in the heat sink
Type
Part numbers of the fans
(in case of replacement)
FDU+12 .. FGU+38
343 034 01
FEU+16 .. FEU+24
343 034 02
FHU+45, FHU+60, FHU
+73, FJU+105, FJU+145
343 034 03
FJU+87
343 034 04
FKU+180, FKU+205,
FKU+260
please contact BITZER
Содержание VARIPACK FDU+12
Страница 12: ...CB 100 1 12 1 2 3 4 Abb 7 Steuremodul abmontieren...
Страница 46: ...CB 100 1 46 1 2 3 4 Fig 7 Dismounting the control module...
Страница 64: ...CB 100 1 64 Fig 17 Graphical representation of the general control functions of the extension module...
Страница 70: ...Notes...
Страница 71: ...Notes...