Thermostar - Pfeiffer Vacuum OmniStar GSD 300 O1 Operating Manual

8.1.2 ThermoStar™

Preconditions
•
Unit switched off
•
Capillary detached from the measurement point
•
Length of capillary still adequate after it has been shortened
Required tools
• Capillary cutting tool (recommended →
or cutting blade
Do not exert pressure
28 Troubleshooting
2
36)
Carefully notch the
capillary
Quartz capillaries
may splinter.
Wear protective
glasses.
Break the capillary
at the point notched
previously
Turn on the unit and wait 10 min (turbo pump acceleration
time)
Check the pressure in the analysis chamber as follows:
•
Start Balzers Quadstar™ 422 <Service>
•
In the <Measure> menu choose <Total pressure>
•
The total pressure of the analysis chamber is displayed
Displayed pressure >4×10
Displayed pressure <4×10
Possible causes:
•
Capillary clogged at the end
⇒ Shorten the capillary by additional 10 mm
•
clogged
Orifice
⇒ Replace the o
•
Capillary clogged across the entire length
⇒ Replace the capillary (→
Connect the capillary to the measurement point
-6
mbar
-6
mbar
2
rifice (→ 34)
2
29)
BG 805 071 BE (9904) GSD300.om