Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 38

Installation
Flexible Screw Conveyor Drive Assembly
38
Vitoligno 300-C Installation/Service
(continued)
Adjusting the length of the screw conveyor
1. Route the flexible screw conveyor with the hose to
the drive unit (observe the minimum bending radius,
see page 30). Mark the required length on the hose.
2. Trim only the hose (not the screw conveyor) with a
suitable tool at the position marked.
Note: To trim the end of the hose, position it on a
solid surface and secure it firmly.
CAUTION
Damage to the screw conveyor surface may lead to the
flexible screw conveyor breaking during subsequent
operation. Do not damage the screw conveyor while
trimming the hose.
3. Trim the screw conveyor with a suitable tool.
Dimension a = 5b in. (140 mm).
Fitting the screw conveyor to the drive unit
1. Undo screw on the motor shaft.
2. Pull motor shaft out downwards.
3. Undo the screws on the screw conveyor fixing tab,
but do not remove them.
4. Push flexible screw conveyor onto the motor shaft.
By turning the shaft, route the screw conveyor
underneath screw conveyor fixing tab A up against
disc B.
5. Tighten the screws on the screw conveyor fixing tab.
6. Insert the motor shaft into the drive unit.
Push the hose onto the drive unit connector and
secure with a hose clamp.
7. Secure the motor shaft with a washer and screw.