Sera pond PRECISION SP Serie Mode D'emploi page 9

Cleaning
All parts can be cleaned with a brush and a neutral detergent.
Take care that no detergents get into the pond water. Careful-
ly rinse all cleaned parts with clean tap water before you re-
assemble the pump and put it back into operation in the pond.
You can immerse the impeller unit (2.3) and the motor block
(2.1) in a decalcifier for stainless steel components if the pump
should have become strongly calcified. Please follow the in-
structions for use of the decalcifier.
Maintenance
The mechanical components of the sera pond pumps SP can
be largely dismantled and replaced. The motor block (2.1) is
encapsulated in plastics for electrical isolation and therefore
cannot be repaired.
Change the impeller unit (2.3):
Pull the pump protection cover (2.7) off the motor block (2.1).
Turn the pump chamber cover (2.5) to the left by approx. 90°.
Pull the pump chamber cover out of the motor block in a
straight direction, as to avoid breaking the shaft (2.3.3). In case
the shaft remains stuck in the motor block, pull it out first be-
fore pulling out the magnetic rotor (2.3.4). Reassembly takes
place in inverted direction.
Attention!
When inserting the rotor into the motor block, it may turn and
be drawn in abruptly. You should wear gloves when doing this
as to prevent injuries.
Troubleshooting
Problem
No water delivery
Pump performance too low
Possible cause
Power supply interrupted
Cable defect
Motor block defect
Pump scaled, magnetic rotor (2.3.4)
stuck
Magnetic rotor blocked by sand
Pump draws in air
Pump cover clogged
Hose too long
Pond filter clogged
Pond filter placed too high
Pump draws in air
Care of your pump during the winter:
Protect the sera pond pump SP from freezing! Remove the
pump from your pond in autumn. Clean and dry the pump
completely (including the impeller unit) and very lightly grease
all metal parts. Important: To ensure optimal performance and
life span, clean the pump and store in a dry place if not in use
and do not leave it in water if switched off for longer periods.
(If you have used a material other than Vaseline for greasing
you must carefully remove it before using the pump again).
SAFETY PRECAUTIONS
• These pumps are not for use with swimming pools!
• sera pond pumps SP should be installed according to your
local electrical installation code. Please contact an electri-
cian.
• Always check that the motor connection and plug are intact
before using.
• Mains supply must correspond to the data on the type plate.
• The circuit to which the pump is connected must be secured
with a circuit breaker (FI / RCD ground fault interrupter,
30 mA).
• The electrical connection should be located in a moisture-
free area and should be at least 2 m (6.6 ft.) away from the
pond's edge.
• Keep the electrical connections dry!
• Never transport the pump by means of the electrical cord!
Possible solution
Plug in the plug, check fuse
Not repairable
Not repairable
Dismantle and decalcify pump
Dismantle and clean pump, change position
according to information for use
Remove leakage in the hose system
Pump is placed too closely underneath the
water surface and draws in air
→ place in a deeper position
Clean pump cover
Shorten hose
Clean pond filter
Place pond filter in a lower position, possibly
dig it in partially
Pump is placed too closely underneath the
water surface and draws in air
→ place in a deeper position
Remove leakage in the hose system
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