15
Inspection and maintenance plan
Time interval
Description
Any other details
As needed
Clean the check valve.
Check the check valve function.
Failure removal
Failures
Causes
Removal
Engine does not start
No power supply.
Blocked pump wheel
Turn the engine shaft with screwdri-
ver through the fan cover (to release
friction circles sealing that may be stuck
together).
Pump does not suck
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.
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.
Thermal detector swit-
ching the pump off
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.
Let the device getting cool!
Check power supply.
Disassemble and clean the suction
hose, prevent from suction of foreign
substances.
Insufficient amount of
water pumped
Too high suction head.
Strainer of the check valve dirty
Water level quickly drops down
Check the suction head.
Clean the strainer., Position the check valve
lower.
Clean the pump and replace worn parts.
(qualified workshop)
EN
ENGLISH
DEEN
