KSB Amaprop 1200, Mounting And Installation Instructions Manual

Page: 29 / 40

Caution
Caution
Caution
Amaprop R
29
7.9 Extending the Guide Rail (Optional)
If the required installation depth of the guide rail exceeds the
standard length of 6m, the guide rail can be extended at the site
by welding on a length of square rail (100x100x5 to DIN 59411,
DIN 2395 or equivalent standard). The square rail can either be
provided by the customer or is included in the KSB scope of
supply. The rails are available in 3 and 6 metres.
Smooth raising and lowering of the unit with
pre--assembled guide claw requires that the
guide rail with weld--on extension be installed in a perfectly
vertical position!
The guide rail extension must be welded on in
compliance with the following standards:
weld preparation to DIN EN ISO 9692
weld quality level C to DIN EN ISO 5817
general tolerances for welded
constructions B/F
DIN EN ISO 13920
7.10 Commissioning
Prior to the commissioning of the unit ensure
that the minimum liquid level above the
propeller blades is adhered to as stipulated in the operating
instructions of the mixer. If part of the propeller blades were to
protrude above the liquid level or the required minimum level
was not available (air--entraining vortices during operation), the
bearing assembly and the propeller would be subjected to a
non--uniform load. This would cause vibrations and shorten the
useful life of the shaft bearing, mechanical seal, propeller and
installation accessories.
Attach mixer, with guide claw mounted and in gravity--centre
position (cf. section 5.1), to the crane/lifting gear (either directly
to the hoisting rope -- section 5.3 or by means of the lifting hook
-- section 5.2) and place over the guide rail.
The pyramid--shaped sleeve (52--2) facilitates the sliding of the
mixer guide claw over the guide rail. Now lower the unit
including guide claw (732) along the guide rail into the tank until
the elastic rubber base on the motor housing bottoms on the
shell in the pump bracket. Prior to that, the plastic plates of the
claw touch down on the top edge of the pump bracket and the
unit tilts into the horizontal installation position. At this point, you
will notice that the rope slackens a little.
If a lifting hook is used at the end of the hoisting rope, lower the
rope a little bit further until the lifting hook comes off the lifting
clamp (571) and the rope can be pulled in. Note: In order to
choose the same unit position again, mark the rope at the railing
level.
Then fasten the power cable (section 8.1) and the lifting rope
(when using a transportable crane, see section 9.1).
For the instructions on commissioning please refer to the
operating manual of the mixer.
Prior to flooding the tank, check the unit’s direction of rotation.
Prior to beginning the direction of rotation check, ensure
that no one is in the tank near the unit, because the
rotating propeller blades constitute a potential hazard.
If the direction of rotation is correct, the fluid will flow from the
installation parts towards the propeller. The fluid flow must point
away from the propeller.
7.11 Extracting the Unit from the Tank
(e. g. for Maintenance Purposes)
No disassembly steps are required to raise the unit.
Prior to raising the unit, ensure that it has been
de--energised and cannot be inadvertently started. This
entails the separation of all electrical connections (including the
control line). Otherwise there would be a residual potential for
fatal injury!
Raise the unit out of the tank on the rope attached to the lifting
gear. To lower it, proceed in the opposite sequence.
8 Fastening the Power Supply Cable/
Hoisting Rope
8.1 Fastening and Guying the Power Supply
Cable
The power supply cable is fastened to the tank wall by means
of the cable support. This is to avoid the cable sliding back into
the tank and risking being caught by the propeller blades. By
means of a shackle, the cable support can be attached to an
appropriate point (railing/eyebolt). Prior to tightening the cable
support bolts, route the taut cable to the tank edge. Be careful
not to produce any fraying points along the cable. (Pad the rim
of the tank, if necessary).
If possible, the cable should be fastened to the tank edge at a
distance of 0.8 m from the side of the square rail, to prevent
chafing at the guide rail, which would damage the cable.
Electric cables routed with too much slack are
susceptible to damage caused either by constant
flow--induced motion or by the rotating propeller blades.
Carbine hook
Cable support
OW 385775-00