3
Maintenance of electronics
Service
The electronic components require only visual inspection and occasional vacuum-
cleaning
.
NOTE! The mains voltage must be disconnected
when work is performed in the control
cabinet
. Circuit boards (pattern and components) are not to be touched without
electrostatic discharge protection to prevent
damage
. Use the wrist band provided on
the inside of the control cabinet door
.
Routine inspection of control cabinet
The control cabinet is completely enclosed and
the electronics thus protected from
normal factory surroundings
. However, in
surroundings with much dust the cabinet
should be inspected regularly inside
.
•
~
Check that the sealing strips and cable grommets
in the cabinet seal properly, so
that dirt is not drawn into the control system
.
•
~
Check that the cabling to the programming unit
is not visibly damaged in any way
.
Cooling device
Check the heat exchanger regulary, in normal factory
surroundings clean it once a year
.
Disassemble
:
Loosen the four screws on top of the heat exchanger
.
Then remove the roof
•
~
the heat exchanger
. The gills are now easy to reach
and to blow clean with
compressed air
.
Check the filter of the cooler regulary
. Replace
the filter once a year in normal factory
surroundings
. Extra dust filter is part of the
delivery
. The order number for the filter is
7820004-3
.
Filter exchange
;
Detach the grating on the left side of the cooler
.
Replace the filter and
put the grating back in place again
.
Replacing the battery for the memory back-up
The battery for backup of the memory, which is
located on the gable of the frameesibe
the robot computer board, should be exchanged
each 5th year to ensure interference-free
operation
. Parameters and programs must be
stored on a diskette as the memory
contents are lost during the exchange
.
When the battery is to be exchanged, disconnect
the voltage to the system at the main
power switch and disconnect the contact of the
battery on the robot computer board
. The
order number for the battery is 4944 026-5
.
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