LCV [en-US]
32
10
Wet End
10.1
Wet End Overview
Radially split, single-wall casing, impeller and suction liner of high-chrome white iron. Suitable for high-discharge head, all particle
sizes up to maximum sphere passage and mildly corrosive slurries. Custom materials are available for highly corrosive slurries.
All casings carry 125 pound, ANSI flange bolting patterns. Adapters for conversion to DIN flanges are available.
All standard impellers are 3 vane, double shrouded designs. Open-shrouded and alternate vane number designs are available
in some sizes.
LCV Wet End
10.2
Wet End Disassembly
WARNING
Refer to Section 2.9 "Assembly & Disassembly Safety" prior to working on the pump.
DANGER
Do not apply heat to the impeller hub or nose due to the sealed cavity at the impeller nose.
DANGER OF EXPLOSION!
10.2.1 Impeller Removal
During normal operation, the impeller becomes tightly screwed onto the shaft by the running torque. A steady torque or mild, yet
sudden, torsional jolt is usually required to disengage the impeller. Several methods of achieving this end are possible. One of
the easiest methods is outlined below. To order the devices described here, contact your GIW / KSB representative. Please
provide your pump assembly number with the order to ensure a good fit.
10.2.2 Impeller Break-Loose Device
WARNING
1
Impeller
2
Break-Loose Device
Energy can be released during disassembly of the tightened
Impeller. Break loose devices, lifting devices and Impeller release
rings could spring suddenly and injure nearby personnel.
Rotate the impeller until the tip of one blade is facing the pump discharge.
Insert the break loose device through the eye of the impeller and attach
to trailing edge of blade facing discharge.
Rotate the shaft in the direction opposite to normal, using the pump pulley
or a spanner wrench.
For ease of impeller removal, the shaft threads should be heavily coated
with anti-seize compound during re-assembly. Two aramid paper gaskets
should be used between the shaft sleeve and the impeller.
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Summary of Contents for LCV
Page 40: ...LCV en US 40 14 Notes ...
