5. MAINTENANCE
The pumps are virtually maintenance-free.
Flushing the Pump:
After having pumped chlorinated swimming pool water or
other liquids leaving residues, the pump should be rinsed
with clear water.
Cleaning the suction base and impeller
[ Fig. M1 / M2 ]:
The warranty does not become void as a result
of this maintenance work!
DANGER! Electric shock!
Risk of injury due to electric shock.
v
Disconnect the pump from the mains before
cleaning the suction base and impeller.
1. Only for Submersible Pump 7000:
Unscrew the Phillips screw
q
and pull the suction base
cover
0
off the suction base
6
.
2. Unscrew the 6 Phillips screws
w
(Dirty Water Pump
7500: 4 Phillips screws) and pull the suction base
6
off
the pump.
3. Clean suction base
6
and impeller
9
.
4. Reinstall the suction base
6
and screw in the Phillips
screws
w
.
5. Only for Submersible Pump 7000:
Insert the suction base cover
0
into the suction base
6
and screw in the Phillips screw
q
.
Note for Submersible Pump 7000:
It is often sufficient to simply remove the suction
base cover
0
and clean the suction base cover
0
and suction base
6
.
For safety reasons a damaged impeller
9
can only
be exchanged by the GARDENA Service Centre.
6. TROUBLESHOOTING
Problem
Possible Cause
Remedy
Pump is running,
but doesn’t deliver
Air cannot escape, since pressure
line is closed.
v
Open pressure line (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 5. MAINTENANCE).
When starting the pump,
water height falls below the
min. water level.
v
Submerge pump deeper.
Pump doesn’t start or suddenly
stops during operation
Thermal overload switch has
switched the pump off due to
overheating.
v
Disconnect plug and clean impeller
5. MAINTENANCE).
Observe max. media temperature
of 35 °C.
No power.
v
Check fuses and electric connec-
tions.
Dirt particles are jammed in the
suction base.
v
Disconnect plug and clean suction
base (see 5. MAINTENANCE).
Pump runs, but output suddenly
decreases
Suction base is clogged.
v
Disconnect plug and clean suction
base (see 5. MAINTENANCE).
Only for the submersible pump 7000:
Pump does not reach residual water
height of 1 mm during flat suction
The suction base cover is missing
in the suction base.
v
Disconnect the plug from the
mains and install the suction base
cover (see 5. MAINTENANCE).
NOTE: For any other malfunctions please contact the GARDENA service department.
Repairs must only be done by GARDENA service departments or specialist dealers approved
by GARDENA.
EN
13
