11 Maintenance
B40IB006EN-D
45
7. Only a minimum slit should remain between the
clamps.
11.3.3 Replacing the Thermocouple
If the thermocouple is defective, demount the sam-
ple holder as described in chapter 7.1.
It is of crucial importance for reliable temperature
measurement that the thermocouple is thoroughly
embedded in the sample holder. For this reason the
thermocouple cannot be exchanged on its own, but
only together with the sample holder.
Contact your local Anton Paar GmbH representative
for exchange.
11.3.4 Replacing the O-rings
Generally, commercially available O-rings made of
Viton are used.
1. Remove the O-ring from the O-ring groove.
2. Clean the groove and the sealing surface with a
suitable solvent, e.g. alcohol.
3. Coat the new O-ring with a thin film of vacuum
grease (contained in the accessory box).
4. Insert the O-ring into the O-ring groove.
11.4 Checking and Replacing Main
Fuses
Two mains fuses are located in the fuse box (1) on
the backside of the CCU 1000.
Exchange the mains fuse as follows:
1. Switch off CCU 1000 and disconnect all cables
from the rear side.
2. Use a small screw driver to push out the fuse
holder on both sides.
3. Check the fuse or exchange the defective fuse.
(The two mains fuses are made of ceramic.
Spec.: 2 x T 8 A H)
4. Put the fuse box back into the cavity of the
power supply.
NOTICE
Rsik of damage
•
Do not use pointed tools.
•
Do not damage the sealing surface or the
edges of the groove.
DANGER
High voltage
Make sure that BEFORE performing any ser-
vice/maintenance work of the CCU 1000, the
instrument is disconnected from the mains sup-
ply.
Only use the specified fuse types
Service and/or maintenance procedures which
involve checking and replacing fuses may only
be performed by authorized service personnel.
NOTICE
Risk of damage.
Only use the specified fuse types to avoid dam-
age.
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