SICK GM35

115
8009389/YN39/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
MAINTENANCE
4 Switch the filter box on; the warming up phase takes about 2.5 hours.
5 Switch on the zero gas pump or connect a different zero gas.
6 Switch all chamber valves to “Zero gas” and switch the Measuring/Purging valve to
“Purging”.
On the EvU: 7 After about 3 minutes, select menu Box measuring in menu cal (cal button) then option
“gas”.
8 Enter password “1 2 3 4”.
9 The measuring device carries out a zero adjust and then switches to operating mode
“Box measuring”.
Fig. 66: Control elements on the filter box
10 Connect test gas; set the primary pressure to approx. 1000 hPa (1 bar).
11 Note the diameters of the individual chambers/chamber combinations in the filter box
and the concentration values;
see “Determining the necessary test gas concentration”,
page 113.
▸ When doing so, set the valves for the relevant filter chambers to “Test gas”.
▸ Switch the Measuring/Purging valve to “Purging” for 2 to 3 minutes (until the
measured value has stabilized) and then to “Measuring”.
▸ The overpressure from the purge phase now dissipates.
▸ When the measured value has stabilized again, read off and note the value.
9.7.3 Restart Measuring mode
1 Purge the filter box with zero gas
On the EvU: 2 Exit operating mode “Box measuring” by pressing back.
3 Disassemble the filter box with plate and reflector from the SR-unit and store safely
4 Refit the SR-unit back onto the measuring point in the correct position.