QF20kSU, edition 2019-10; page 10 of 17
4. Maintenance/Servicing of the QF 20kSU
Due to the robust construction the Quattroflow pump are widely maintenance-free. The ball bearings do
not need any extra lubrication.
We recommend the following maintenance intervals for the different pump parts:
Component
Maintenance interval
Action
Shaft-bearing-cap unit
1000 h operating hours,
at least once a year
Replacement of the complete
unit (kit order no.
PSKITWLC20k)
Motor
Pay attention to the maintenance information of the manual of the
motor
Coupling
Pay attention to the maintenance information of the manual of the
coupling
Gear
Pay attention to the maintenance information of the manual of the
gear
In case that the diaphragm broke it needs to be replaced. Then it is also recommended to check the ball
bearings. For corrosion reasons or a clearly audible operating noise the parts of the bearing service kit
should be also replaced. (PSKITWLC20k). In general it is recommended to replace the elastomer parts
whenever the pump chamber is opened.
Please follow the general guidelines and safety advices when
handling with chemicals
.
Disconnect mains supply before opening the pump housing!
Basically, operations at the pump must be performed during standstill only. The motor
has to disconnect from the power supply, e.g. by pulling out the power plug or using a
repair switch, and has to secure against unintentional switch-on. This can be realized by
a lockable emergency switch. To prevent an accidental re-starting a danger sign should
be installed..
After purging the pump with air there might be a small residual
amount of fluid inside the pump chamber.
Flush the pump chamber thoroughly and check the rinse fluid.
The dismounting and mounting of the pump should be done on a
rigid table or work bench. Please note: the pump is heavy.
All further warning and safety instruction of chapter 3 has to be
respected.
