1200 Series Quarternary Pump User Manual 95
Maintenance
7
Simple Repairs
Figure 20 Wire connected to the mainboard.
5 Replace the foam and top cover.
6 Disconnect all capillaries and tubes from the pump head and disconnect the
active inlet valve cable.
7 Using a 4-mm hexagonal key stepwise loosen and remove the two pump
head screws and remove the pump head from the pump drive
8 Place the pump head, on the backside of the plungerhousing, on a flat
surface. Loosen the lock screw (two revolutions) and while holding the
lower half of the assembly carefully pull the pump head away from the
plunger housing.
9 Remove the support rings from the plunger housing and lift the housing
away from the plungers.
10 Install the support ring assembly from the active seal wash option kit into
the plunger housing.
Figure 21 Inserting the active seal wash support rings.
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