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10.1
Maintenance work
10.1.1
Changing the motor (pump version
with standard motor)
62
DANGER
Danger of death from falling parts!
Falling pumps or individual pump components may result in life-threat-
ening injuries!
• During installation work, secure pump components against falling
down with suitable lifting gear.
DANGER
Risk of fatal electrical shock!
Check for absence of voltage and cover or cordon off adjacent live parts.
Increased bearing noises and unusual vibrations indicate bearing wear. The bearings or mo-
tor must then be replaced. The drive may only be replaced by the Wilo customer service!
Dismantling:
WARNING
Risk of scalding!
At high fluid temperatures and system pressures, allow the pump to cool
down first and then depressurise the system.
WARNING
Personal injury!
Incorrect dismantling of the motor can result in personal injury.
• Before dismantling the motor, ensure that the centre of gravity is not
above the holding point.
• Secure the motor against tipping over during transport.
• Always use suitable lifting accessories and secure parts against falling.
• Never stand below a suspended load.
1.
Disconnect the system from the power supply and secure it against being switched on
again without authorisation.
2.
Make sure it is not live.
3.
Earth the work area and short-circuit.
4.
Close the shut-off devices upstream and downstream of the pump.
5.
Depressurise the pump by opening the air vent valve (Fig. I, Item 9).
6.
If the motor cable is too short for dismantling the motor, disconnect the motor.
7.
Loosen the grub screw (Fig. I, Item 4) on the bush coupling (Fig. I, Item 12).
8.
Loosen the flange screws (Fig. I, Items 13/14/15) on the motor and lift it up from the
pump using suitable hoisting gear.
Installation:
NOTICE
For all subsequent work, observe the torque specified for the respective
thread type (see tightening torques table)!
1.
Carefully insert the new motor into the pump housing using suitable hoisting gear and
screw it into place with the flange screws (Fig. I, Items 13/14/15).
2.
Push the forked spacer (Fig. II, Item A) between the lantern and the bush coupling. The
forked spacer must be able to sit there without any play.
Installation and operating instructions • Wilo-VeroLine-IPL-Z, Wilo-VeroTwin-DPL-Z • Ed.01/2024-07
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