SIGRIST DualScat Ex, Instruction Manual

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Instruction Manual DualScat Ex
26 10118E/5
5 Servicing
5.1 Service schedule
Recommended servicing work:
When Who What Purpose
Once a
year or as
needed User Check the dry
chamber
 Section 5.2
Absolutely essential for main-
taining detection accuracy and
protecting the electronics.
Once a
year or as
needed User Replace desiccant
in sensor head

Section 5.3
Absolutely essential for main-
taining detection accuracy.
Once a
year or as
needed User Clean the sensor
head
 Section 5.4
Absolutely essential for main-
taining detection accuracy. In-
terval depends on medium.
Once a
year or as
needed User Replace O-ring
60 x 3 from sensor
head and blanking
glass or plate

Section 5.5
Absolutely essential for sus-
taining proper operation.
Once a
year or as
needed User Recalibrate the
photometer
 Section 5.6
Advisable for maintaining de-
tection accuracy. Interval de-
pends on medium.
Every 2
years Service or-
ganization Replace seals Absolutely essential for sus-
taining proper operation.
Every 5
years or as
needed Service or-
ganization Replace the flow
cell windows Advisable for maintaining de-
tection accuracy. Interval de-
pends on medium and duty
conditions.
Table 4: Service schedule.
5.2 Replacement of desiccant in the Ex enclosure
Never open the photometer when cold product is flowing through the pipes.
Try to do this work during a sterilization phase or when the product is at least
at room temperature.
The dry chamber contains a desiccant to protect the optics/electronics against
moisture. The desiccant must be replaced whenever a message to this effect
appears on the display.
 Section 6.2