Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-79
Sealing the Vacuum Chamber and Pumping Down the System
Always wear gloves when working with an open vacuum chamber. To correctly
seal the vacuum chamber, complete the following steps:
1 Check and clean the O- ring.
Replace the O- ring if it is cracked or compressed. Otherwise, wipe it with
pure water.
2 Place the O- ring on the vacuum chamber.
Fit it snugly into the groove on the top of the chamber.
3 Check and clean vacuum chamber.
Check visually and if needed wipe inside the vacuum chamber and inside of
the cover using pure water and clean laboratory tissue.
4 Cover the vacuum chamber.
Place the cover on the vacuum chamber and use the Allen wrench to
re- tighten the screws. Tighten the screws in sequence, working from one
side to the other until they are tight.
5 Ensure that the vacuum vent valve is tightened.
6 Close the cover.
7 Pump Down the System.
• Turn on the Instrument Power switch.
• From the MassHunter Workstation (or ChemStation), re- start ICP- MS
Top. If the ICP- MS Top is already active, close the session and re- start
ICP- MS Top.
• Select Instrument>>Instrument Control from the ICP- MS Top window.
• Select Vacuum>>Vacuum ON. After a short delay the Pumps will start
and the pump down will start. When the vacuum starts, the cover will
slide down a little, therefore tighten the screw again.
CAUTION
Clean the cover with pure water and a clean laboratory tissue before placing the cover
on the vacuum chamber. Do not grease the O-ring of the vacuum chamber cover.
CAUTION
After leaving the cover open for a long period of time, if the humidity is high, or after
replacing or cleaning the parts inside, it may take a while to reach Standby mode.
If it takes more than 5 hours to reach the Standby mode, an error will be generated.
After acknowledging the error, try to change to the Standby mode again.