Gardena 4000/5 Betriebsanleitung Seite 18

Cleaning the flow sensor:
D
C
F
E G
Problem
Pump runs, but the suction
action doesn't take place
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1732-20.960.05.indd 18 1732-20.960.05.indd 18
If the flow sensor is dirty, this may result in spurious error
messages (LED flashes orange).
1. Unscrew both screws
2. Remove the cover
3. Undo the screw
4. Unscrew the cap
5. Remove the impeller
flow sensor.
6. Re-fit the impeller
direction.
H
7. Screw the cap
8. Secure the cap
9. First insert the cover
two screws
Possible Cause
Pump sucks in air at a joint.
Leaky or damaged suction
hose.
The pump was not filled with
the liquid to be pumped.
The liquid escapes over the
hose which is connected to
the delivery side during the
suction action.
Absolutely vacuum-resistant connection is achieved by using
GARDENA Suction Hoses (see point "8. Available accessories").
Leaky screw fitting
7
cap .
Air cannot escape, since delivery
side is closed or remaining water
is in the pressure hose.
The waiting time wasn't
observed.
Suction filter or backflow prevent-
er in the suction hose clogged.
Too high suction height.
In case of any other difficulties concerning the suction action,
use GARDENA Suction Hoses with Backflow Preventer
(see point "8. Available accessories") and fill in the liquid to
be pumped over the filler cap
e
.
r .
t
and detach the clip
u
anticlockwise.
i
and clean it. Clean the housing of the
i
with the metal part in the mounting
u
into place clockwise.
u z
by way of the clip
r
at the top and then tighten the
e at the bottom.
Remedy
v Seal connections on suction
side so are airtight.
v Check suction line for damage
and seal so is airtight.
v Fill the pump
(see "4. Operation").
1. Fill the pump again
(see "4. Operation").
2. When starting operation hold
the pressure hose approx.
1 m vertically above the
pump, until the suction
action has taken place.
v Check seal (replace if neces-
6
at the filler
sary) and tighten connection
securely (do not use pliers).
v Open shut-off valves
(e. g. nozzle) in the delivery
line, empty the delivery hose
or disconnect it from the
pump during priming.
v Switch on the pump and wait
up to 5 min.
v Clean the filter or the back
flow preventer.
v Reduce suction height.
7
before operation.
z
.
t
using the screw .
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