Güde HWW 1000 P Mode D'emploi D'origine page 20

ENGLISH
20
Inspection and maintenance plan
Time interval
As needed
Failure removal
Failures
Engine does not start
Pump does not suck
Thermal detector swit-
ching the pump off
Insufficient amount of
water pumped
Reduced switching
intervals
Description
Clean the check valve and the prefilter.
Causes
No power supply.
Blocked pump wheel
Missing, loose or blocked check valve
Check valve is not in water.
No water in the pump shell.
Too high suction head.
Air bubbles in the suction pipeline.
Connections not sealed, pump sucks air,
pump is not deaerated.
Prefilter clogged
Pump is overheated and switched off by
the thermal overloading protection.
No electric power supply.
Impurity particles (e.g. pebbles) have
settled down in the suction hole.
Too high suction head.
Strainer of the check valve dirty
Water level quickly drops down
Air pressure in the receiver too low
Any other details
Check the check valve function.
Removal
Turn the engine shaft with screwdri-
ver through the fan cover (to release
friction circles sealing that may be stuck
together).
Fix or clean the check valve.
Immerse the check valve into water.
Fill the pump shell with water.
Check the suction head.
Check the tighten of suction pipeline.
Clean the prefilter.
Let the device getting cool!
Check power supply.
Disassemble and clean the suction
hose, prevent from suction of foreign
substances.
Check the suction head.
Clean the strainer., Position the check valve
lower.
<<Vorfilter reinigen>>
Clean the pump and replace worn parts.
(qualified workshop)
Control air pressure.