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GP VF 80 Set | HWW VF 100
ENGLISH
GB
Inspection and maintenance plan
Time interval Description Any other details
As needed Clean the check valve and the prelter. Check the check valve function.
Failures – causes - 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.
Pump without water
Too high suction head.
Air bubbles in the suction pipeline.
Connections not sealed, pump sucks air,
pump is not deaerated.
Prelter clogged
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.
Carefully repeat connection according to
thechapter „Connection“!
Clean the prelter.
10
Thermal detector swit-
ching the pump o
4
Pump is overheated and switched o 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.
Insucient 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 prelter 10
10
Clean the pump and replace worn parts.
(qualied workshop)
Reduced switching
intervals
Air pressure in the receiver too low Control air pressure.
11
24


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