Metrohm 930 Compact IC Flex Oven/SeS - Manual (Page 75)

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5 Operation and maintenance
930 Compact IC Flex Oven/SeS (2.930.2400)
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Figure 18 Tool for piston seal (6.2617.010)
1 Tip 2 Sleeve
Spare part For this step you need a new piston seal (6.2741.020).
Replacing the piston seal
Figure 19 Removing the piston cartridge from the pump head
1 Piston cartridge 2 Backup ring
1 Removing the piston cartridge
Loosen the piston cartridge (17-9) using the adjustable wrench and
then unscrew it from the pump head by hand. Place it off to the side.
2 Removing the backup ring
Shake the backup ring (17-4) out of the piston opening. Place it off
to the side.