User manual

122 Bio-inert Quaternary Pump User Manual

9 Maintenance

Removing the Pump Head Assembly

When • Exchanging the seals

• Exchanging the pistons

• Exchanging seals of the seal wash option

Tools required p/n Description

Wrench, 1/4 inch

8710-2392 Hexagonal key, 4.0 mm, 15 cm long, T-handle

Preparations • Switch off pump at the main power switch and unplug the power cable.

• Use a solvent shutoff valve or lift up solvent filters in solvent reservoirs for avoiding leakages.

CAUTION

Damage of the pump drive

Starting the pump when the pump head is removed may damage the pump drive.

➔ Never start the pump when the pump head is removed.