71
Replacing the Fuses
If no segments appear on the display
after turning on the moisture analyzer,
the fuses may be defective.
§ Be sure to unplug the moisture analyzer
from AC power before replacing the
fuses
§ Unscrew both fuse holders on the rear
side of the moisture analyzer using the
Allen wrench
§ Check both fuses
$ Replace the defective fuses:
T 6,3 A, 250 V, 5 x 20 mm
$ If the moisture analyzer still does not
function, please contact your local Sar-
torius Service Center.
!Do not use other fuses or shortcircuit
the fuses!
Disassembling or Replacing the Heat-
ing Unit
A defective heating unit can be com-
pletely replaced. Also disassemble the
heating unit before cleaning.
The following replacement work
may only be performed by Sartorius
service technicians (temperature adjust-
ment required):
– To interchange the ceramic or halogen
heating unit
– To interchange heating units with a
voltage rating of 230 volts or 115 volts
!Danger: The terminals of the heating
unit are under live current
§ Before disassembling the heating unit,
make absolutely sure to disconnect
the moisture analyzer from AC power
(mains) and allow the heating unit cool
down for 10 minutes before removing it
§ Slide out the heating unit to remove
§ Install the new or cleaned heating unit
in the moisture analyzer
Safety Inspection
If there is any indication that safe
operation of the moisture analyzer is no
longer warranted:
§ Turn off the power and disconnect the
equipment from the wall outlet immedi-
ately
> Lock the equipment in a secure place to
ensure that it cannot be used for the
time being
Safe operation of the moisture analyzer
is no longer ensured when:
– there is visible damage to the moisture
analyzer or power cable
– the moisture analyzer no longer func-
tions properly
– the moisture analyzer has been stored
for a relatively long period under unfa-
vorable conditions
– the moisture analyzer has been exposed
to rough handling during shipment
In this case, notify your nearest Sarto-
rius Service Center. Maintenance and
repair work may only be performed by
service technicians who are authorized
by Sartorius and who:
– have access to the required
maintenance manuals
– have attended the relevant service
traning courses
We recommend that the moisture ana-
lyzer be inspected according to the fol-
lowing checklist by a qualified Sartorius
service technician:
– Resistance of the protective grounding
conductor < 0.2 ohm measured with a
commercially available multimeter
– Insulation resistance > 2 megohms
measured with a constant voltage of at
least 500 volts at a 500 kohm load
The duration and number of measure-
ments should be determined by a quali-
fied Sartorius service technician accord-
ing to the particular ambient and
operating conditions. However, such
inspection must be performed at least
once a year.
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