MKS Spectra 138A, Инструкция по эксплуатации

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PAS Trolley Manual
LP101017 Rev 1.02
Page 21
4.5. Switching Off
To switch off the instrument first turn the PUMPS switch to off. Then turn off the
MAIN POWER switch to off (‘0’). It is advisable not to move the instrument for
several minutes to allow the turbo pump to stop.
The instrument can now be disconnected from the main electrical supply.
Caution Follow the Switching off procedure before opening the
vacuum system or before moving the instrument.
4.6. Bakeout Heater
The Portable Analytical System can be fitted with an optional analyser housing
bakeout heater. This can be used to assist the removal of contaminants
(particularly water vapour) from the analyser.
Before switching on the heater remove the RGA power supply unit from the end of
the analyser housing. The bakeout heater is switched on using the switch marked
HEATER , the indicator above the switch should illuminate. The heater
temperature is controlled using the heater controller. Refer to the temperature
controller manual for instructions on how to set the temperature. Note that the
heater should normally only be used when the analyser is under vacuum. A
temperature of 200
°
C should not be exceeded.
Caution
Temperatures in excess of 100
°
C may occur on the
surface of the analyser housing
Warning The instrument may be damaged if the maximum
bakeout temperature is exceeded.
Warning
The instrument may be damaged if it is moved during
bakeout.