Maintenance
7.2.3
Cleaning the pump
NOTE
High water pressure or spray water can damage bearings!
Do not clean bearing areas with a water or steam jet.
Clean large-scale grime from the pump.
7.3
Dismounting
DANGER
Risk of injury due to running pump!
Do not touch the running pump.
Do not carry out any work on the running pump.
Before all installation and maintenance work, discon-
nect the motor from the mains and secure against being
switched back on again.
DANGER
Risk of electrocution!
All electrical work must be carried out by quali
fi
ed electri-
cians only.
Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
WARNING
Risk of injury and poisoning due to hazardous or hot fluid!
Use personal protective equipment when carrying out any
work on the pump.
Allow the pump to cool completely before commencing any
work.
Make sure the pump is unpressurized.
Empty the pump, safely collect the pumped liquid and
dispose of it in accordance with environmental rules and
requirements.
WARNING
Risk of injury due to heavy components!
Pay attention to the component weight. Lift and transport
heavy components using suitable lifting gear.
Set down components safely and secure them against
overturning or rolling away.
WARNING
Risk of injury during disassembly!
Secure the pressure-side gate valve against accidental
opening.
Depressurize the blocking pressure system, if available.
Wear protective gloves, components can be very sharp-
edged due to wear or damage.
Remove
spring-loaded
components
carefully
(e.g.
mechanical seal, tensioned bearing, valves etc.), as com-
ponents can be ejected by the spring tension.
Observe the manufacturer's speci
fi
cations (e.g. for the
motor, coupling, mechanical seal, blocking pressure sys-
tem, cardan shaft, drives, belt drive etc.).
NOTE
Material damage due to incorrect dismounting/installation
of the pump.
Only specialist mechanics should complete dismounting/
installation work.
7.3.1
Preparations for dismounting
Pump is depressurised
Pump completely empty,
fl
ushed and decontaminated
Electrical connections disconnected and motor secured
against switch-on
Pump cooled down
Coupling guard removed
For a coupling with spacer piece: remove distance piece
Manometer lines, manometer and
fi
xtures dismounted
NOTE
Material damage, fragile components.
Dismount ceramic parts of the plain bearing with care, do
not hit or knock.
1. Dismantle the pipes on the suction and pressure side.
2. Remove pump from the system.
3. When dismounting, observe the following:
–
Mark the precise orientation and position of all compo-
nents before dismounting them.
–
Dismount components concentrically without canting.
–
Dismount pump (
→
sectional drawing).
300 486
BA-2015.12.16 EN
SHB
23
