M&C TechGroup SP2000H_DIL_BR Operator's manual - Manual (Page 21)

21
Gas sampling and gas conditioning technology 2-1.1.7-ME
14 INITIAL USE
Prior to initial use, system and process-specific safety measures must be observed.
For the media to be transported, the relevant safety requirements and measures must be taken into
account.
W A R N I N G !
The air supply to the injectors should not be turned on until the
probe is at operating temperature (see. technical data). Or damage
to the probe or/and inconsistent initial dilution ratio can result.
Prior to initial use, it must be ensured that the mains voltage corre-
sponds with the voltage on the rating plate!
Caution: Do not touch the probe surface during use as this can
cause burns due to the high surface temperatures. Protective
gloves must be worn and the probe protected against unauthorised
access!
The following step-by-step procedure is recommended:
If available, close ball valve via pneumatic actuator or manually (turn twist handle fully to the right)
Check set temperature on installed thermostat or external controller.
N O T E !
If the set temperature on the capillary controller should be reduced
by more than 30°C in one step during operation, the thermostat
over-temperature cut-out will operate (for re-starting press the re-
set button).
Switch on the mains voltage.
N O T E !
The total heating time is about two hours. After about one hour, the
lower alarm threshold value (30°C below set value) is exceeded.
After heating the complete probe (about two hours), open the ball valve for the dilution gas. If a ball
valve is installed operate the pneumatic actuator or turn the twist handle fully to the left manually.
Set the precision pressure reducer to the pressure specified on the enclosed injector data sheet (see
Fig. 6).
N O T E !
For safety reasons, the vacuum pressure gauge must show a vac-
uum reading of >-0.6 bar. With a vacuum reading of < -0.6 bar, the
critical orifice will not function properly. If the necessary vacuum is
not reached, the dilution gas supply pressure must be increased.