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Maintenance and care
BlueShadow Pump 80P Instructions V7685
8.3 Checking the fittings
Torque wrench
8.3.1 Torque values
Pump head, stainless steel
Torque
100 ml
15 Nm
250 ml
15 Nm
500 ml
12 Nm
1000 ml
12 Nm
8.3.2 Tighten fittings
Process
Figure
1.
Always tighten the inlet
screw 1
3
and the outlet
screw 1
4
with a torque
wrench.
2.
Always hold the outlet fit-
ting with a wrench when the
capillary fitting
1
is being
tightened with a wrench.
3.
Using an Allen wrench,
screw in the opposite pairs
of fastening screws
2
evenly
and alternately to prevent
the pump pistons on the
inside from jamming.
4.
Tighten the knurled-head
screw
5
on the eluent inlet.
Fig. 20:
Screw fittings
2
3
1
4
5
on the
pump head
8.4 Flushing the pump
Generally, the pump and all its components (valves, degasser) should be
flushed after each operation. Also, flush the pump to clean the tubing be-
fore changing the solvent and to remove air bubbles in the capillary and
tubing. If buffer solution has been employed, note that the buffer solution
and the flushing solution are compatible.
When buffers have been used, flush with water.
When aggressive solvents have been used, flush with isopropanol.
Note:
For applications with normal phase, only use isopropanol as
flush ing solution.
Tools
