Faults, Causes And Remedies - Wilo IPL Manual De Instrucciones

English
Exchange of the motor:
• Switch off power supply and secure against unauthorized switching.
• Close isolating valves at both pump ports.
• Lower the pressure of the pump by opening the air vent plug (fig. 1, pos. 9).
WARNING!
In the event of hot liquids.
• Disconnect wires from motor terminals
• Unscrew the motor fixing-screws at motorflange and screws in coupling.
• Lift the motor off pumphousing by means of suitable lifting gear.
• Assemble the new motor by means of suitable lifting gear and secure the
motorflange connection with bolts.
CAUTION!
Observe screw tightening torque specifications (see 9.3).
• Fix the coupling screws considering the axial positioning of the coupling
(see Fig. 1).
CAUTION!
Observe screw tightening torque specifications (see 9.3).
• Rewire power leads to motor terminals.
9.3 Screw tightening torque
Screw Type:
Location
Pump Housing - Lantern
Lantern - Motor
Shaft Coupling

10 Faults, causes and remedies

WARNING!
Dangers caused by electrical energy must be excluded.
All electrical work must be performed after the electrical supply has been
switched off and secured against unauthorized switching.
WARNING!
At high water temperatures and system pressure close isolating valves
before and after the pump.
First, allow pump to cool down.
14
Risk of scalding!
Possible damage of the pump!
Possible damage of the pump!
UNC SAE Grade 5
Diameter
1/4
3/8
3/8
1/4
Electrical shock hazard!
Risk of scalding!
Torque (± 10%)
ft lb Nm
7 9.5
25 33
25 33
7 9.5
Wilo AG 06/2005