www.thermofisher.com
8. Tab down to pressure check and press enter.
9. In this menu go to sample pressure and again press enter. This will change
the state of the solenoid and will also lock the solenoid in that position so that
it will not repeatedly change states.
10. Make note of the pressure reading on the gauge and compare it to the
previous pressure reading.
11. These pressure readings should be the same. If one is higher than the other
this will confirm there is a leak in the solenoid and it must be replaced.
12. Repeat the above steps for the second solenoid and compare the pressure
readings. Again, if the pressures are not the same this will confirm a leak and
the solenoid must be replaced.
13. After solenoids have been confirmed good with no leaks or have been
replaced, reverse the order in which they were removed and reinstall in the
instrument. Take extra care with tubing connections to prevent leaks. Teflon
tape may be used for threaded NPT connections.
The sample solenoid is the solenoid located closest to the rear of the
instrument and wiring is connected to the sample connector PJ8 on the
measurement interface board.
The reference solenoid is the solenoid located towards the front of the
instrument and wiring is connected to the reference connector PJ9 on the
measurement interface board.
During installation, make sure the unit is turned off and the power cord is
disconneced to prevent accidental powering of the unit.
14. Restart the unit and check operation.
Should any questions or difficulties be encountered in the performance of this procedure,
please contact the Thermo Scientific Technical Support Dept. at T: 508-520-0430 Option
2 for Technical Support then press 1 for Gas Analyzers.
Units can also be returned for factory repair at the Franklin, MA Repair Depot.
Please contact the Thermo Customer Service Group at T: 508-520-0430 Option 1 for
Customer Service or the Thermo Technical Support Group at T: 508-520-0430 Option 2
Technical Support for an RA (return authorization) to return the instrument.
