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Anleitung SMP 750-S
14.01.2003
GB
Important! Note!
● Remove the mains plug before all
maintenance work.
● In the event that the pump is
often transported in the course of
operation, it should be
cleaned out with clear water after
every use.
● In case of stationary installation,
the function of the loating switch
should be checked every 3
months.
● All fibrous particles which may
have built-up inside the pump
housing should be removed with
a water jet.
● Every 3 months the shaft
ground and as should be
cleaned from mud.
● Remove deposits on the floater
with clear water.
Cleaning the impeller
If excessive deposits collect in the
pump case you must dismantle
the bottom part of the pump as
follows:
1.
Remove the intake cage
from the pump case.
2.
Clean the impeller with clear
water.
Incidents – Causes – Remedies
Incidents
Pumpe does not start
No flow
Pump does not switch off
Insufficient flow
Pump switches of after short
operating period
6
9:20 Uhr
Seite 6
Important! Do not put down or
rest the pump onthe impeller!
3.
Assemble in reverse order
Setting the ON/OFF opera-
ting point
The ON and OFF operating point of
the float switch can be set by adju-
sting the float switch in its latching
holder.
Before you put the pump into opera-
tion, please check the following:
● The float switch must be installed
so that the level of the ON opera-
ting point and the level of the
OFF operating point can be rea-
ched easily and with little force.
To check this, place the pump in
a vessel filled with water, raise
the float switch carefully by hand
and then lower it again. As you
do so, note whether the pump
switches on and off.
● Make sure that the distance bet-
ween the float switch head and
the latching holder is not too
small. Proper operation is not
guaranteed if the gap is too small.
Causes
– No mains supply
– Floater does not switch
– Inlet sieve is clogged
– Pressure hose in bent
– Floater cannot sink down
– Inlet sieve is clogged
– Reduced pumping capacity by
dirty and abrasive water
– Thermal cutout stops pumps
due to dirty water
– Water too hot. Thermal-cutout
stops pump
● When you set the float switch,
make sure that it does not touch
the base before the pump swit-
ches off. Caution! Risk of dry-run-
ning.
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
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