15
GB
7. Troubleshooting
Problem
Probable cause
Remedy
Pump is running,
Air cannot escape, since
v
Open pressure line
but doesn’t deliver
pressure line is closed.
(e.g. kinked pressure pipe).
Air locks in the suction base.
v
Wait for max. 60 seconds
until the pump deaerates
automatically over the vent
valve. If necessary, switch
off and start it again.
Impeller clogged.
v
Disconnect plug and clean
impeller (see 6. Maintenance).
When starting the pump,
v
Submerge pump deeper.
water height falls below the
min. water level.
Pump doesn’t start or
Thermal overload switch has
v
Disconnect plug and clean
suddenly stops during
switched the pump off due
impeller (see 6. Maintenance).
operation
to overheating.
Observe max. media
temperature of 35 °C.
No power.
v
Check fuses and electric
connections.
Dirt particles are jammed
v
Disconnect plug and clean
in the suction base.
suction base (see
6. Maintenance).
Pump runs, but output
Suction base is clogged.
v
Disconnect plug and clean
suddenly decreases
suction base (see
6. Maintenance).
A
In the event of other faults please contact GARDENA Service.
Repairs should only be carried out by GARDENA service centres or dealers
authorised by GARDENA.
8. Technical Data
Submersible Pump
Dirty Water Pump
Type 21000
inox (Art. 1787)
20000 inox (Art. 1802)
Rated power
1,000 W
1,050 W
Max. delivery capacity
21,000 l / h
20,000 l / h
Max. pressure
1.1 bar
1.1 bar
Max. delivery height
11 m
11 m
Max. submersion depth
8 m
8 m
Residual water level
3 mm
43 mm
Contaminated water with
particle size of max.
5 mm
38 mm
Power cable
10 m H07 RNF
10 m H07 RNF
