zh-CHS
Maintenance/repair
80
WILO SE 2020-10
9.5
Dismantling
危险
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric
shock!
• Any work on electrical devices must only be carried out by a qualified
electrician.
• Before all work on the unit, deactivate the power supply and guard against
accidental switch-on.
• Any damage to the pump connection cable must only ever be rectified by a
qualified electrician.
• Observe the installation and operating instructions for the pump, the motor and
other accessories.
• Reinstall any uninstalled safety devices, such as terminal box covers, once the
work is complete.
Before commencing dismantling operations, ensure that the following tools and tackles
are available:
ƒ
A crane / chain pulley block suitable for handling the weight of pumping unit
ƒ
A selection of ring and open-ended spanners in British and Metric sizes
ƒ
Eye bolts in British and Metric sizes
ƒ
Cotton rope, wire rope, slings
ƒ
Hardwood and metal packing blocks
ƒ
Miscellaneous tools including a set of allen keys, drills, pin drivers, files and so on
ƒ
Extractor / puller for bearing and coupling
Maintenance and repair work require the pump be partially or completely dismantled.
The pump housing can remain installed in the piping.
ƒ
Switch off the energy supply to the pump and secure against switching on again.
ƒ
Close all valves in the suction line and pressure pipe.
ƒ
Drain the pump by opening the drainage screw and the venting screw.
ƒ
Remove coupling guard.
ƒ
If present: Remove the intermediate sleeve of the coupling.
ƒ
Remove the fastening screws of the motor from the base frame.
9.5.1
Exploded views of hydraulics
Fig. 25:
Exploded view of Atmos TERA-SCH hydraulic (mechanical seal version without sleeves)
