68 (107) BRUKER CryoProbe User Manual
Monitoring and Maintenance
If this procedure does not solve the problem, contact BRUKER.
Panels and housings 6.4.2
The panels and housings of the CryoProbe System components may be cleaned
using a non-fluffy cloth dampened in a mild detergent. Do not use abrasive clean-
ers, scouring powders, organic solvents (e.g. alcohol or acetone), or any harsh
chemicals. Wipe the soap residue off with a clean, damp cloth, then dry with a
clean dry cloth. Dyes of printed labels might be delicate and require special atten-
tion.
If the He Compressor is of the air-cooled type (P/N O00245), its air-cooler fin must
be kept clean.
Scheduled maintenance 6.5
0
There are two counters for the operating hours in the CryoProbe System. One is
on the front of the He Compressor, it is incremented only while the He Compres-
sor is actively running. The more important counter is located on the CryoCooling
Unit backpanel. It counts the hours of active system operation, i.e. it starts incre-
menting when C
OOL DOWN is pressed and it stops counting when WARM and UN-
PLUG light up.
Exchange of Coldhead in CryoCooler
Needed every 12 months (recommended) or every 10 000 operating hours. The
heart of the CryoPlatform is a Gifford-McMahon cycle refrigerator which is driven
by the He Compressor. Due to its mechanical principle, this system requires peri-
odic maintenance by a specialist. The maintenance actions will take two days.
k.2 Put the CryoProbe upside down onto the edge of a level surface, e.g. a
table, such that it cannot fall down. Its tube must point down but without
touching anything.
k.3 Protect your eyes with goggles.
k.4 Connect the VT gas to its regular input at the CryoProbe bottom and
select a flow rate ≥ 1000
/h in edte.
k.5 If some debris or liquid is trapped inside the sample cavity, flush it out
with jets of (1
st
) water and (2
nd
) alcohol. Use a syringe or a wash-bottle
which you direct from below into the sample cavity.
CAUTION: Do not immerse in alcohol for an extended period of time.
Do not use strong solvents like acetone! Take extreme care not to touch
the inside of the cavity. Do not flush anything but VT gas through the VT
gas channel inside the CryoProbe. Do not reverse the direction of VT
gas flow.
k.6 Wait until the VT gas stream has dried the entire cavity.
k.7 Set the VT gas flow rate back to its previous value and detach the VT
gas hose from the CryoProbe.
To Next Page
Loading...
Need help?
General
