DH Instruments ADCS-601, Operation And Maintenance Manual

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ADCS-601™ OPERATION AND MAINTENANCE MANUAL
© 2005 DH Instruments, Inc. Page 144
The CDGs should be powered continuously for at least 10 hours before they are zeroed.
When the ADCS-601 system is powered, the CDGs are powered.
In ADCS Tools press [Maintenance] , [Run CDG Zero] . A message instructing you to
set up the ADCS-601 hardware is presented. Set up the hardware following steps
through .
Setup the ADCS-601 vacuum manifold for CDG
zeroing.
Remove the vacuum clamps and the top cap-off
from the KF40 cross between the PG7601 and
FPG8601 pressure standards.
Remove the KF40 cross. Push the KF40 bellows
connection on the FPG8601 to provide clearance
for the KF40 centering rings to clear the fittings.
Rotate the KF40 cross 90º and install it on the
vertical tube coming up through the bench from the
turbo pump.
Remove the CDGs from the PG7601 AMH-38 and
the FPG8601. Keep them electrically and
pneumatically connected.
CAUTION: DO NOT BREAK THE CONNECTIONS
AT THE CDG OR THE CDG WILL BE EXPOSED
TO ATMOSPHERE. BE SURE TO BREAK THE
CONNECTIONS ON THE SIDE OF THE
ISOLATION VALVE THAT IS AWAY FROM THE
CDG.
PG7601 AMH-38 CDG: Break the connection at
the KF40 vacuum clamp closest to the AMH-38 vacuum chamber so that the KF40 x
KF16 adaptor stays with the CDG.
FPG8601 CDG: Break the connection at the KF16 connection on the FPG8601 lower
mounting post.