Maintenance And Service; Preventative Maintenance And Service Intervals - Agilent Technologies Cryogenic User Manual

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Maintenance and Service

Preventative Maintenance and Service Intervals

44
Table 2 lists the preventative maintenance schedules.
Table 2 Preventative maintenance schedules
Interval or indication
123: CLI Error Significant
decrease in mass flow
107: Ion Pump
Maintenance Needed
Compressed helium
cylinder pressure
< 500 psi.
Every 2 months
CCC ~1 year operation or
Reduced Heater power
Air cooled compressor
20,000 hours operation
Water cooled
compressor 30,000 hours
operation
Service
Warm and re-cool
system
Warm system and repeat
vacuum pumping
Replace helium cylinder.
Operate vacuum pump
Replace CCC cold head
Replace compressor oil
adsorber
Cryogenic Systems Operation
Notes
CryoBay warming cycle
followed by normal
re-start. If problem still
occurs, call for service.
CryoBay warming cycle
followed by normal
re-start. If problem still
occurs, call for service
May be delayed until just
before starting cryogenic
operations.
CryoBay automatically
performs this service.
Assumes mass flow and
CLI are normal. Call for
service. Done on an as
needed basis.
Call for service. This is
REQUIRED, regardless of
cyrogenic system
performance. Failure to
arrange for service may
damage the system.