Cleaning The Impeller - Neptun NTP 25 Manual De Instrucciones

Anleitung NTP 25 06.09.2005
GB
Important! Note! Important! Do not put down or
rest the pump onthe impeller!
● Remove the mains plug before all
3.
maintenance work.
● In the event that the pump is
often transported in the course of
operation, it should be Setting the ON/OFF opera-
cleaned out with clear water after
ting point
every use.
● In case of stationary installation,
The ON and OFF operating point of
the function of the loating switch
the float switch can be set by adju-
should be checked every 3
sting the float switch in its latching
months.
● All fibrous particles which may
holder.
Before you put the pump into opera-
have built-up inside the pump
housing should be removed with tion, please check the following:
● The float switch must be installed
a water jet.
● Every 3 months the shaft
so that the level of the ON opera-
ground and as should be ting point and the level of the
cleaned from mud. OFF operating point can be rea-
● Remove deposits on the floater
ched easily and with little force.
with clear water. To check this, place the pump in
a vessel filled with water, raise
the float switch carefully by hand

Cleaning the impeller

and then lower it again. As you
do so, note whether the pump If excessive deposits collect in the
switches on and off.
pump case you must dismantle
● Make sure that the distance bet-
the bottom part of the pump as
ween the float switch head and
follows:
the latching holder is not too
1. Remove the intake cage
small. Proper operation is not
from the pump case.
guaranteed if the gap is too small.
● When you set the float switch,
2. Clean the impeller with clear
make sure that it does not touch
water.
Incidents – Causes – Remedies
Incidents Causes
Pumpe does not start – No mains supply
– Floater does not switch
No flow – Inlet sieve is clogged
– Pressure hose in bent
Pump does not switch off – Floater cannot sink down
Insufficient flow – Inlet sieve is clogged
– Reduced pumping capacity by
dirty and abrasive water
Pump switches of after short – Thermal cutout stops pumps
operating period due to dirty water
– Water too hot. Thermal-cutout
stops pump
6
10:45 Uhr Seite 6
the base before the pump swit-
ches off. Caution! Risk of dry-run-
ning.
Assemble in reverse order
Remedies
– Check mains supply
– Bring floater in a higher
position
– Clean inlet sieve water jet
– Reset hose
– Place pump properly on shaft
ground
– Clean inlet sieve
– Clean pump and replace
worn-out parts
– Remove mains plug. Clean
pump and shaft
– Make sure that a water tem-
perature of max. 35°C is not
exceed