D0300020001EN - Maintenance
Page 9
Maintenance
Exchanging the sensing cell
All items in this section refer to
.
One half of the housing (item 1) is fitted with plastic catches (item 2) which must properly
engage in the slots (item 8) provided in the other half of the housing (item 7) so as to firmly
connect the two halves of the housing (item 1) and (item 7).
Apply a screwdriver to the upper slit on the longer front so as to disengage the plastic catch
(item 2) by pushing it backwards. Simultaneously, pull both halves of the shell (item 1) and
(item 7) apart.
Next apply a screwdriver to the lower slit on the longer front so as to disengage the plastic
catch by pushing it backwards. Simultaneously, pull both halves of the shell apart.
Repeat this for the shorter front.
Detach shell (item 1).
Remove the contact spring (item 4) by loosening the fixing screw (item 3).
Remove the sensing cell (item 11) together with the PCB. and plug (item 6) from the
remaining shell.
Carefully separate the sensing cell (item 11) from the PCB (item 6).
Remove the insulating plate (item 5) from the measurement cell.
Exchange the sensing cell.
Insert insulating plate (item 5) between PCB and measurement cell.
WARNING:
Contaminated parts can be detrimental to health and environment.
Before beginning work, find out whether any parts are contaminated. Adhere to the
relevant regulations and take the necessary precautions when handling contaminated
parts.
CAUTION:
Dirt and damage can impair the function of the vacuum component.
When handling vacuum components, take appropriate measures to ensure cleanliness
and prevent damage.
CAUTION:
Touching the product with bare hands increases the desorption rate.
Always wear clean, lint-free gloves and use clean tools when working in this area.
Note:
The cell can be mounted on the PCB in either orientation.