Bruker BLAH1000 E, Operating & Service Manual

Page: 47 / 54

Operating & Service Manual Version 002 BRUKER BIOSPIN 47 (53)
8
Service Information
and Maintenance 8
Every intervention on the device must be carried out by an authorized and
qualified person. Any failure due to a non-respect of the following instructions will
not be attributable to BRUKER BIOSPIN and will not be covered by the guarantee
clauses.
Preventive Maintenance of the RF Module on BLA-Type Amplifiers 8.1
The RF module inside BLA's Amplifiers is equipped with a easily extractible PUSH
FAN Assembly.
Fan's on assembly have a high reliability and manufacturer gives a expected live
time of 70000 hours (8 years) at 25°C and 5 years at 60°C.
Replacement of the assembly could be done in the field when a misfonction of
fans is detected by lightning from the OVERHEAT Status Led.
To prevent such a misfonction, a preventive maintenance could be done every 4
years.
This assembly can be ordered on the manufactory BBIO-FR by P/N:
•
W1346523 «PUSH FAN ASSEMBLY 6».
•
W1346527 «PULL FAN ASSEMBLY 4».
Operation 8.1.1
1. Disconnect all cables from the front panel and the supply connector on the rear
panel. Remove the amplifier from the NMR console and place it on a secure
flat surface.
2. Unscrew and remove the coverage plate from the amplifier.
3. Disconnect the 2 wires (red +32V / black GND) being on the RF module
dispatch supply connectors and coming from the Push fan assembly as well as
the 2 wires (red +32V / black GND) being on the dispatch supply connectors
located on the bottom of the BLA housing and coming from the Pull fan
assembly. Also disconnect the fan status wires (white) from BLA Control board
connector J18 and J21.