Base Unit
BU1 – Changing the DFU filter and the zero air cartridge
BU2a – Maintaining the pump (new K model)
BU2b – Maintaining the pump (old model)
BU3a – Replacing the sample filter (classic version)
BU3b – Replacing the sample filter (ext life version)
BU4a – Cleaning the air conditioner (2D and 4D airpointer)
BU4b – Cleaning the air conditionner (HC airpointer)
BU5 – Leak-checking the airpointer and the airpointer modules
BU6 – Performing a sample flow check
BU7 – Replacing the miniUPS battery
BU8 – Unmounting and cleaning the complete air conditioner (HC airpointer)
BU9 – Cleaning the sample inlet

BTEX module
BTEX1 – Replacing the GC
BTEX2 – Replacing the PID lamp
BTEX3 – Replacing the carrier gas filter

CO module (API bench)
CO A2 – Checking the capillary and replacing the DFU filter
CO A3 – Refilling the CO cylinder

CO module (Thermo bench)
CO T2 – Checking the capillary and replacing the DFU filter
CO T3 – Refilling the CO cylinder

H2S module (API bench)
H2S A1 – Replacing the scrubber

H2S module (Thermo bench)
H2S T1 – Replacing the scrubber

multiPM module
PM1 – Checking the capillary and replacing the DFU filter
PM2 – Cleaning the sample inlet

NOx module (API bench)
NOx A2 – Replacing the DFU filter
NOx A3 – Replacing the critical orifices, o-rings & capillaries
NOx A4 – Cleaning the reaction cell
NOx A5 – Replacing the permeation tube

NOx module (Thermo bench)
NOx T2 – Replacing the DFU filter
NOx T4 – Cleaning the reaction cell
NOx T5 – Replacing the permeation tube

O3 module (API bench)
O3 A1 – Replacing the scrubber

O3 module (Thermo bench)
O3 T1 – Replacing the scrubber

SO2 module (API bench)
SO2 A5 – Replacing the permeation tube

SO2 module (Thermo bench)
SO2 T5 – Replacing the permeation tube