April 8, 2011 HN FAQ Memo, Version 3.0 Page 24 of 108
3.1.6.2 Mounting of the new tube.
Ensure that the new tube is clean and undamaged. The Tube must NOT be lubricated with any kind of
lubrication.
The pressure side of the tube should have a length of 100 mm after the pump.
Position the tube in the housing so that the end of the tube with the threaded fitting is in the right hand
groove of the housing and protruding 100mm from the housing. The rotor should be oriented with the
motor end of the shaft in the housing.
Push the tube in to the groove around the rotor. Rotating the rotor can help this. When the tube is in the
groove all around the rotor, mount the other half of the housing. Make sure not to pinch the tube when
pushing the housing parts together.
Check the length of the tube on the pressure side, it should be 100 mm. Mount the pump housing on the
motor shaft and fit the 4 screws holding the housing to the motor. The other end of the tube should be fitted
as shown on the later pictures.
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