ROTHENBERGER RP Pro II - Manual (Page 10)

9 ENGLISH
OPERATING INSTRUCTIONS
Warning
• Use clean fresh water only and/or non-aggressive liquids.
• Once wanted pressure is reached, avoid the power pump running for more
than 3 minutes.
Though switched on, the motor does not start running
Current does not reach the motor
terminal box
Check plug/socket contact. Check cord wires integrity up to
terminal box. Reset the electrical feeding cut by motor thermal
protection and/or replace blown fuses.
Current reaches the motor terminal box,
however with too low voltage Arrange for motor to be fed with correct 230V, 50 Hz (110 V.) electric
current
Pump jammed up or stuck by ice.
Motor rotor stuck
Apply to an appointed Service Center
Pump runs, however without making pressurised water
Pump is fed with too small quantity of
water
Check the feeding water hose: its inner diameter must be min. 15
mm.. Moreover the feeding water has to fl ow from cock with min.
pressure of 1 bar
Considerable quantity of air mixed with
inlet water Put a vented storage tank in the water feeding line between cock and
water inlet with the pump
Water fi lter clogged Clean the fi lter
Pump water seals worn out or pump valves
jammed
Apply to an appointed Service Center
Valve V1 at the minimum point of pressure Turn the valve V1 till reaching the wanted pressure
Irregular pressure output combined to considerable noise
Air mixed with feeding water Check tightness at both ends of feeding water hose
Pump is fed with too small quantity of
water
Check the feeding water hose: its inner diameter must be min. 15 mm.
Moreover the feeding water has to fl ow from cock with min. pressure
of 1 bar
Motor suddenly stops running
Motor overheating (motor thermal
protection stops it)
Let the overheated motor cool down and then switch it on again
Pump gets the tested piping pressurised but cannot keep wanted pressure
Valve V2 does not perform properly
Check the functioning of the valve V2. Clean it and remove dirt that
water may have carried inside
Fault, possible causes, repairs