12.3 Assembling the equipment:
In case castor oil had been removed from the oil
chamber:
•
Pour a fresh quantity of castor oil in up to about
5 mm below the upper edge of the cylinder (at
the beginning of the depression).
•
Insert both of the silicone seals.
•
Turn the conical seal inside out and dampen the
stud with some castor oil then screw it into the
guide tube.
•
Unfold the conical seal back to its original shape,
position the spring on the piston and insert the
guide tube into the piston.
•
Mount the measuring cell and position it flush
along the edges of the cylinder.
•
Place the heat casing at the centre of the lower
silicone seal.
•
Fit the circular grommet and, with the help of a
ruler placed on the heat casing, position it paral-
lel to the cylinder (see Fig. 9, the semicircular
holes should then be below the valve openings).
Fig. 9: Positioning the circular grommet
•
Place the valve plate at the centre and position it
parallel to the end plate.
•
Fit the M8×40 screws with new copper gasket
washers and loosely screw them in.
•
Tighten the screws. Take care to ensure that there
is uniform pressure on the circular grommet (if
the pressure is too high, the grommet makes a
greyish mark on the transparent acrylic, whereas
if the pressure is lower the surface looks milky).
12.4 Recommissioning:
•
Degas the hydraulic fluid and pour the oil into
the equipment (see chapter 10).
•
Position the safety valve (see chapter 10).
•
Conduct a fresh volume calibration (see chap-
ter 6).
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
Subject to technical amendments
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