Trouble-Shooting - STERWINS 900 JET IC-3 Manual

8. TROUBLESHOOTING
DANGER! Risk of injury due to electric shock.
Warning! Before any trouble shooting, switch off the pump and
remove the plug from the socket.
Problems
The Pump fails
to Start up
No Intake
Inadequate
delivery rate
The pump stops
during operation
(Thermostat
switched pump
off)
EN
20151208 SPECIFICATIONS 250 TP-3 EXE.indd 120
Probable causes
No Power
Pump shaft blocked.
Intake valve not in water
Pump head not filled with water Fill with water
Air in intake line
Intake valve dirty or leaks
Intake cage blocked
Max. suction height exceeded
Suction height too high
Intake Valve dirty
Water level falling rapidly
A solid body is blocking the
impeller
Water is too hot.
Pump running dry
120
Corrective actions
Check Voltage and Ensure pump switch is
switched on
Use a screwdriver to turn the motor fan
bolt slightly
Immerse intake valve in water
Make sure intake line is well sealed
Clean or replace intake valve
Clean intake cage.
Check suction height
Check suction height
Clean
Immerse intake valve deeper and make
sure intake line well sealed.
Connect discharge line to water line,
disconnect suction hose, open the water
line. Switch on the pump for several times
for approx. 2 sec.
Ensure water temperature does not
exceed 35°C.
Check intake line with water supply.
Wait for pump cool down, then switch
on again.
08/12/15 16:21