en
Installation and electrical connection
24
WILO USA 2021-01
For tightening torques for the pump and motor on the baseplate, see table “Tightening
torques for baseplate bolts (Grade 5, Zinc plated, Hex bolts)”.
Grade 5, Zinc plated, Hex
bolt:
5/16"-18
3/8"-16
1/2"-13
5/8"-11
3/4"-10
Tightening torque [ft-lbs] 17.5
31
75
150
267
Table 9:
Tightening torques for baseplate bolts (Grade 5, Zinc plated, Hex bolts)
CAUTION
Risk of damage due to vibrations! Incorrect alignment can lead to vibrations.
Vibrations can damage or destroy individual components.
• Carefully align the pump unit until all measurement results are within the permissible
range.
6.7.3
Laser alignment of the pump unit
Proceed per manufacturer's recommendations for proper laser alignment instructions.
6.8
Electrical connection
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric
shock!
• Only use an electrical installer approved by the local electricity supplier to make the
connection.
• Observe the locally applicable regulations.
• Before beginning work on the product, make sure that the pump and drive are elec-
trically isolated.
• Make sure that no one can turn on the power supply again before work is completed.
• Make sure that all energy sources can be isolated and locked. If the pump was
switched off by a protective device, it must be secured against switching back on
again until the error has been remedied.
• Electrical machines must always be grounded. Grounding must be appropriate for
the motor and meet the relevant standards and regulations. Ground terminals and
fixation elements must be dimensioned appropriately.
• Connection cables must
never
touch the piping, pump or motor housing.
• If it is possible for persons to come into contact with the pump or the pumped fluid,
the grounded connection must also be fitted with a residual current circuit breaker.
• Observe the manufacturer’s installation and operating instructions for the motor and
accessories!
• During installation and connection work, observe the circuit diagram in the terminal
box!
CAUTION
Risk of property damage caused by improper electrical connection!
An inadequate mains design can lead to system failures and cable fires due to mains
overload! If the wrong voltage is applied, the pump can be damaged!
• Ensure that the current type and voltage of the mains connection correspond to the
specifications on the motor rating plate.
