Watson-Marlow 900 Series - Manual (Page 10)

Page 10
Loosen the upper casing port
connector securing nuts using a
13mm spanner. Locate a spanner
on the cast hexagonal nut of the
rotor. Rotate the rotor clockwise
until one pump head shoe has left
contact with the tube completely
and the tubing has been forced
out of the upper casing port.
Lever the connector out of the
tube. Slide off the compression
ring and sealing gland.
Pull the end of the tube out of the
upper casing port and remove the
support ring. Whilst still holding
the tube, rotate the rotor
anticlockwise to enable the tube to
be withdrawn from the pumphead.
When the second shoe is clear of
the tube, remove the lower casing
port connector, compression ring
and sealing gland. Remove the
tube completely from the
pumphead along with the lower
support ring.
Manual tube fitting
Isolate the motor from the
mains supply before opening
the pumphead door.
Clean the inside and faces of both
casing ports, the compression and
support rings and sealing gland.
Clean the door sealing face
ensuring that the lubricant seal is
intact.