Metrohm 872 Extension Module - Manual (Page 54)

6.4 High pressure pump
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46 ￭￭￭￭￭￭￭￭
872 Extension Module IC Module
Replacing the piston seal
The 6.2617.010 special tool (see Figure 27, page 46) is necessary in
order to remove the piston seal from the pump head. It consists of two
parts: a tip for removing the old piston seal and a sleeve for inserting the
new piston seal.
2
1
Figure 27 Tool for piston seal 6.2617.010
1 Pin
Pin for removing the old piston seal. 2 Sleeve
Sleeve for inserting the new piston seal.
Caution
Screwing the 6.2617.010 special tool for the piston seal into the piston
seal destroys this completely!
1 Removing the piston seal
Caution
Avoid touching the sealing surface in the pump head (18-4) with
the tool.
Screw the special tool for the piston seal (27-1) with the narrow side
just as far into the piston seal as the same can be removed.