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Maintenance and repair
11.6
Repair
Ensure that the system is at atmos‐
pheric pressure.
Drain the pump hose and thoroughly
rinse it with a suitable medium.
Only turn the rotor in a clockwise direc‐
tion.
Changing the pump hose
1.
Loosen the suction hose and the dis‐
charge hose from the hose connectors
2.
Loosen the fixing bolt on the transparent
cover and remove the transparent cover
3.
Remove the suction-side hose con‐
nector (left) from its mounting
4.
Carefully pull the pump hose out under
the rollers
5.
When doing so, ensure that the
rounded sides of the hose con‐
nectors are pointing towards the
unit.
Insert the two hose connectors of the
new pump hose into the two mountings.
6.
Briefly switch on the motor. The pump
hose moves into the correct position
under the rollers
7.
Replace the transparent cover on the
housing and screw it into place
8.
Fix the suction hose and the discharge
hose to the hose connectors
68
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