Watson-Marlow 621CC - Manual (Page 24)


Do not force the rotor into position. The rotor will slide into place easily if correctly
aligned.

Tighten the hexagonal locating bolt to a nominal torque of 10Nm using a 5mm Allen
key.

The rotor bolt, which is impregnated with "Loctite 218" thread lock, should be
subjected to a maximum of three removals/relocations before renewal. To avoid rotor
bolt renewal after three removals, apply "Loctite 222" thread lock to the rotor thread
before relocation. This is critical to ensure prolonged, secure location of the rotor hub
to the drive shaft. Failure to complete this action will invalidate the terms and
conditions of the pumphead warranty.

Replace the rotor cover.
When closing the guard, check it does not make contact with the rotor. If it does, then the
rotor has been fitted incorrectly. Re-open the guard, remove and refit the rotor, and close
the guard.
Track removal (close coupled AC motor gearboxes)

Remove the rotor.

Disconnect the controlled waste pipework if attached.

Loosen the four track retaining screws using a Number 2 Pozi-Driv screwdriver.

Disconnect the mains interlock if connected to a mains contactor

Withdraw the track fully from the gearbox.
Page 24 of 46 Watson-Marlow Bredel E-Manuals
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