TESTO 350 - Cleaning the Main Gas Pump

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3. Open the cover of the service compartment (locking clip) on the
back of the analyzer box.
1 Condensate pump
2 Main gas pump
3 Rinsing/feed pump for diluting gas
7.11.1. Cleaning the main gas pump
1. Pull the gas pump upwards out of the gas measuring block.
2. Pull the inlet and outlet hoses off the sockets on the pump head
3. Loosen the plug connectors and remove the main gas pump.
4. Loosen the 4 fastening screws (Torx spanner T 9) on the pump
head of the main gas pump.
5. Pull off the pump head.
6. Remove the two circlips from the depressions of the pump head
(front and rear).
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