Malfunctions; Causes And Elimination; Guarantee; Technical Modifications - Zehnder Pumpen ZFS 71.1 W Ex Betriebsanleitung

Malfunctions; causes and elimination

8.
- Disconnect the power supply before carrying out any kind of work on the plant!
Malfunction
1. Motor is not rotating
2. Motor rotates, but does not convey
3. Motor switches off during start-up
4. Motor does not switch off
9. Warranty
As manufacturer, we provide a warranty of 24 months on these pumps 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 the plant, or by replacing the defective parts (to
our choice).
Defects which are attributed to misuse or wear are excluded from warranty. We will assume no responsibility for
consequential damages that are caused by a breakdown of the plant. In case of warranty, adress yourself to your
specialist retailer.

10. Technical Modifications

We reserve the possibility of technical modifications for the purpose of further development.
Cause
- absence of line voltage or improper
line voltage
- incorrect connection
- defective power cable
- defective/wrong capacitor
- impeller/cutting knife blocked
- activated motor protection
(overheating, blocking, improper
voltage or
other malfunction)
- control malfunction/defective floating
switch
- motor defective
- impeller blocked or worn out
- check valve blocked
- gate valve blocked/
closed
- pressure pipe blocked/hose buckled
- intake socket blocked
- incorrect rotating direction
- water deficiency inside the shaft
- voltage improper or unsteady
- thermal protection laid out incorrectly
- current consumption too high
- control malfunction
- wrong/defective floating switch
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Elimination
- check voltage supply
- correct the connection
- replacement (customer service)
- replacement (customer service)
- cleaning
- inspection, inform customer service
- inspection, inform customer service
- replacement (customer service)
- cleaning/replacement
- cleaning
- cleaning/opening gate valve
- cleaning/eliminating kinks
- cleaning
- correction
- switch off/inform customer service
- correction/customer service
- inspection/customer service
- customer service
- customer service
- replacement/customer service