42 | Maintenance
OdaLog Portable Gas Loggers
Maintenance
Routine maintenance of the Odalog instrument is an
extremely important factor affecting the reliability of the
instrument. Optimum instrument performance and reliable
operation will only be achieved if a dedicated maintenance
program is followed.
To ensure reliable measurements, the Odalog should be
checked at regular intervals with test gas as described in the
Calibration Section of the user manual.
Before you use the Odalog, inspect the instrument for signs of
misuse or damage, as well as cracks or missing parts. Do not
use the Odalog instrument if it is damaged. Please contact
your closest authorized Thermo Fisher service centre if the
instrument is damaged or missing parts.
To ensure that Ex certifications and performance approvals
are not invalidated, any service, repair or overhaul should only
be performed by accredited workshops with full instructions
and drawings from the certificate holder. To ensure that any
service, repairs or overhaul are carried out in such a manner it
is preferable that the Odalog instrument be sent to the closest
authorized Thermo Fisher service centre.
Do not attempt to disassemble or carry out maintenance on
the Odalog unless instructions for that live maintenance
procedure are contained in the manual and the part is listed
as a replacement part. Only use Thermo Fisher International
replacement parts.
The Odalog should be switched off when not in use and
stored in a clean and dry environment as usually found in a
normal office.
Ensure the Odalog exterior is kept clean with a soft damp
cloth. Do not use solvents, soaps or polishes.
It is recommended that Odalog instruments are returned to an
authorized Thermo Fisher service centre every 6 months for
calibration and service.
Filter Replacement for G20
and G20 RTX
Figure 58. Filter Replacement
1. Ensure Odalog is off.
2. Using the Allen Tool [Part No. 11-0000] remove the three
retaining screws from the filter housing assembly. (See
3. Carefully remove filter housing assembly.
4. Remove and retain o-ring.
5. Remove filter.
6. Remove, clean and replace stainless filter grill (if fitted).
7. Replace filter with
‘sh
i
ny’
side facing outwards.
8. Replace o-ring. DO NOT GREASE O-RING.
9. Replace filter housing assembly on Odalog body.
(aligning screw holes).
10. Replace three end cap-retaining screws. DO NOT
OVERTIGHTEN.
CAUTION:
Ensure the following procedure is
only carried out in a non-hazardous, dirt and
grease free area.
Note:
Ensure hands are free of dirt and grease
prior to handling new filter.
Note:
Filter orientation is important. Ensure that
the replacement filter is correctly placed with the
‘
shiny
’
side facing outward.
Note:
Some sensor filters are fitted with stainless
wire gauze protection. If fitted, this should be
cleaned and dried prior to fitting of new filter.
