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7.6.2
Cleaning the pump head
1.
Isolate the pump from the electrical supply.
2.
Remove the cover (B) by loosening the
retaining bolts (A).
3.
Check the gasket (C) and replace it if
necessary.
4.
Rinse the pump head with clean water and
remove all residues. Make sure that no rinsing
water remains in the pump head.
5.
Check the rotor for wear or damage and replace
the rotor if necessary. Also see the maintenance
scheme in § 7.2.
CAUTION
When the rotor is worn the compression
force of the hose decreases. If the com-
pression force is too low, this results in a
loss of capacity by the backflow of the liq-
uid to be pumped.
Backflow results in a reduction of the life of
the pump hose.
6.
Replace the cover and fasten the retaining bolts
with the correct torque. Refer to § 11.1.6.
7.
Switch on the electrical supply to the pump.
7.6.3
Fitting the pump hose
1.
Clean the (new) pump hose on the outside and
fully lubricate it with Bredel Genuine Hose
Lubricant.
MAINTENANCE
33
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