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5. Maintenance
- Disconnect the power supply before carrying out any kind of work on the pump!
Maintenance contains an inspection and a cleaning of the pump housing, the running wheels and the individual
stages. For this purpose, unscrew the four cross head screws (pos. 400 of the sectional drawing), remove and clean
the bottom filter (pos. 390).
Remove and clean the cover (pos. 330 (all in all 4x available)).
Remove the hexagon nut and the flat washer. Now, the individual stages may be removed out of the pump housing.
Information: A stage consists each of 1x running wheel (pos. 360), 1x diffuser (pos. 350) and 1x cover (pos. 330).
The correct mounting position of the individual stages must be respected at all costs.
If necessary, number the parts. Following the cleaning, all parts are remounted in the right order.
ATTENTION
In case of worn running wheels (wheel (e.g. due to abrasive media) a wear of the mechanical seal is
also possible. The inspection of the mechanical seal and the motor as well as the replacement of the electric
connecting cable should be effected by authorised after-sales services or by manufacturing factory only.
For temporary storage and conservation of the pumps, e.g. in winter, it suffices if the plant is stored in a cool, dark,
dry, and frost-protected place. In case of a longer shutdown of the pump, the motor shaft must be rotated all 2
months by temporarily activate the pump, in order to prevent a jamming of the mechanical seal.
6. Warranty
As manufacturer, for all pumps of the type series TDP we provide a warranty of 24 months from date of purchase.
Your sales receipt passes for verification. During that warranty period, we gratuitously remedy all deficiencies
which are attributed to material or fabrication defects by either repairing or replacing the pump (to our choice).
Defects which are attributed to misuse or wear (running wheel and mechanical seal) are excluded from warranty.
Furthermore, the warranty claim expires if works (excepting those under point 5) are effected on the pump. We will
assume no responsibility for consequential damages that are caused by a breakdown of the pump.
Attention:
The pump must not be operated if the system is closed (closed pressure pipe). Resulting damages are
excluded from the warranty.
7. Technical modifications
......... reserved for the purpose of further development.
2005 ZEHNDER GmbH
Only for EU countries
Do not put the pump into the household waste!
According to the European Directive 2002/96/EC on Waste Electrical and Electronic Equipment
and transposition into national law, wasted electronic tools must be collected separately and must
be recycled in an environmentally compatible manner.
