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9.5
Dismantling
9.5.1 General
9.5.2 Dismantling the
Wilo-CronoNorm-NL
Slide-in unit
Installation and operating instructions Wilo-CronoNorm-NL, NLG
DANGER! Risk of fatal injury!
Risk of fatal injury and risk of injuries to personnel and property
damage due to improper handling.
• The safety instructions and regulations according to chapter 2
"Safety" on page 55 and section 9.1 "Safety" on page 78 are to be
taken into consideration for all maintenance and repair work.
Maintenance and repair work require the pump be partially or com-
pletely dismantled.
The pump housing can be installed in the piping.
• Close all valves in the suction line and pressure pipe.
• Drain the pump by opening the drainage screw and the venting screw.
• Switch off the energy supply to the pump and secure against switch-
ing on again.
• Remove coupling protection.
• If present: Remove the intermediate sleeve of the coupling.
Motor:
• Remove the fastening screws of the motor from the baseplate.
NOTE:
For installation work, please also observe the sectional drawings in
section 11.1 "Spare parts lists, Wilo-CronoNorm-NL" on page 93 as
well as in section 11.2 "Spare parts lists, Wilo-CronoNorm-NLG" on
page 97.
Slide-in unit:
1.1
1.2
1.3
Fig. 17: Slide-in unit
See Fig. 17
• Mark positions of the parts which belong together with a coloured
pen or scriber.
• Remove the hexagon head bolts (14).
• Pull the pull-out slide-in unit straight out of the spiral housing (1.1) to
avoid damage to interior parts.
• Put the slide-in unit down at a safe workplace.This assembly must be
removed vertically to avoid damage to the impellers, stationary wear
rings and other parts.
• Remove the housing seal (1.2).
English
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