M&C TechGroup SP2000H_DIL_BR Operator's manual - Manual (Page 30)

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Gas sampling and gas conditioning technology 2-1.1.7-ME
16.2.3 CHANGE AND CLEANING OF THE INJECTOR
N O T E !
For cleaning the injector it is not necessary to remove it out of the
dilution cross. Clean the nozzle mechanically. For the 180°C-
version the complete cross can be cleaned up in an ultrasonic
bath.
W A R N I N G !
The complete cross of the 320°C-version can not be cleaned in an
ultrasonic bath. Otherwise the graphite packing will be damaged !
Before cleaning the nozzle with compressed air remove the critical
orifice first (s. 16.3) !
16.2.4 CHANGE OF THE O-RING AT THE INJECTOR (180°C-VERSION)
Please change the o-ring as follows:

Loosen union nut 3 and remove the jet pipe;

Loosen nut 4 and remove the dilution tube connection;

Push out the injector with the tool (Pos. 3) from the opposite side (jet pipe);

Remove the o-ring from the nozzle;

Push on the o-ring on the nozzle;

Re-install the injector with the tool. Push it up to block and press it tightly.
W A R N I N G !
The Swagelok
® fittings must be carefully tightened to avoid damag-
ing the internal components!
16.2.5 CHANGE THE PACKING AT THE INJECTOR (320°C-VERSION)
All the time when the injector is removed please change the packing (320°C- version).
Figure 14 shows the injector with the graphite packing.
Thrust collar Nozzle Graphite rings
Part No.: 93S4002
Injector complete, DIL-H320
Pos 1 (Fig.15):
Packing for injector nozzle
consisting of 3 graphite rings

4/

6 – 1,5mm thickness
Part No.: 93 S 4010
Figure 16 Injector 320°C version with graphite packing