Repairs; Faults; Indication Of Faults - Grundfos DDE series Montage- Und Betriebsanleitung

7.5 Repairs

Warning
The pump housing must only be opened
by personnel authorised by Grundfos!
Repairs must only be carried out by
authorised and qualified personnel!
Switch off the pump and disconnect it from
the voltage supply before carrying out
maintenance work and repairs!
After consulting Grundfos, please send the pump,
together with the safety declaration completed by a
specialist, to Grundfos. The safety declaration can
be found at the end of these instructions. It must be
copied, completed and attached to the pump.
The pump must be cleaned prior to
dispatch!
If dosing liquid has possibly entered the
Caution
pump housing, state that explicitly in the
safety declaration! Observe section
7.4 Diaphragm
If the above requirements are not met, Grundfos may
refuse to accept delivery of the pump. The shipping
costs will be charged to the sender.

8. Faults

8.1 Indication of faults

Depending on the selected operation mode,
the pump indicates the following faults with its LEDs:
LED
Fault
colour
low-level
Yellow
signal
Red empty signal
Red motor
(flashing) blocked
For further faults, please see
22
breakage.
Remedy
• fill tank
• check contact type
(see section 6.3.4).
• fill tank
• check contact type
(see section 6.3.4).
• reduce
backpressure
• have gear repaired,
if necessary.
8.2 List of faults.